CompTIA RF0-001

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CompTIA RF0-001

CompTIA RF0-001 RFID+ Certification Exam

Practice TestVersion 1.0

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QUESTION NO: 1

Under optimal conditions, active RFID tags operating at 303.8MHz or 433.92MHz can be read at:

A. less than 9.7 feet (3 meters).

B. more than 322.6 feet (100 meters).

C. more than 10 miles (16 kilometers).D. less than 6 inches (15 centimeters).

Answer: B

QUESTION NO: 2

High frequency (HF) output power is BEST measured as:

A. decibels per meter.

B. dBm.

C. Effective Radiated Power (ERP).

D. Effective Isotropic Radiated Power (EIRP).

Answer: B

QUESTION NO: 3

When firmware upgrades become available, which of the following should the technician consider

FIRST?

A. The benefits of new upgrade.

B. When to schedule the upgrade.

C. Whether the upgrade can be downloaded from the internet.

D. How to install the upgrade.

Answer: A

QUESTION NO: 4

Based on the diagram below, at which of the following numbered locations should antennas be

placed to read tags on six sides of an RF-opaque carton? (Select TWO).

CompTIA RF0-001: Practice Exam

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C. 3, 5, 8, 9

D. 2, 4, 8, 9

Answer: C,D

QUESTION NO: 5

When installing a passive ultra high frequency (UHF) system that will read tags on consistently

oriented cases as they move past an interrogator on a conveyor system, which of the following

types of antenna would provide the BEST results?

A. Circularly polarized

B. Yagi

C. WhipD. Linearly polarized

Answer: D

QUESTION NO: 6

RFID labels that were being printed correctly are now being printed with half the image area

across two labels and the tags cannot be validated. Which of the following should the techniciancheck FIRST?



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A. Communications protocol

B. Print drivers

C. Sensor settings

D. Printer speed

Answer: C

QUESTION NO: 7

Which of the following is an attribute of an inductively coupled system [e.g. low frequency (LF),

high frequency (HF)] that a capacitively coupled [e.g. ultra high frequency (UHF), uW] system

does not have?

A. Capacitive power circuitry.

B. Inductive dipole antenna.

C. Inductive coil antenna.

D. Capacitive material in which to store power.

Answer: C

QUESTION NO: 8

A customer has an RFID system to sort packages by their destination in real time. When first

installed, the system worked properly but now most packages are not going to the correct

destination. Which of the following BEST describes the cause of this problem?

A. The customer is using a bad batch of tags.

B. Interrogator output power has degraded over time.

C. There are increased losses in the antenna cabling.

D. Sensors that control the interrogator were repositioned.

Answer: D

QUESTION NO: 9

Within an office environment, a property manager must place an RFID tag on all assets with a

value of greater than $100. The tags must cost less than $10 each; be able to store a maximum of

one kilobit of data and read with a portable interrogator. When performing inventory, the manager

is unable to move the assets to interrogate the tags. The RFID tags used should be applied to the

front of the asset with an adhesive strong enough to prevent tag removal and be:



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A. a Surface Acoustic Wave (SAW) tag.

B. a passive Class 0 tag.

C. a passive13.56 MHz tag.

D. an active Class 1 Gen 2 tag.

Answer: C

QUESTION NO: 10

When using an RFID enabled printer to encode tags as they are being printed, which of the

following determines the data being encoded?

A. The printer is encoding in a sequence guaranteeing unique data on each tag.

B. The software generating the print job.

C. The printer's firmware.

D. RFID enabled printers cannot encode RFID tags.

Answer: B

QUESTION NO: 11

After viewing a site diagram, it is observed that the location of one of the interrogation zones is

bisected by a steel door. Which of the following problems could this cause?

A. Having steel doors amplifies the interrogator signal.

B. Tags on the other side of the closed door would be read more than once.

C. If the door is closed, the interrogation area is reduced by one-half.

D. With the doors closed, the signal strength would overload the interrogator.

Answer: C

QUESTION NO: 12

A large number of antennas are being damaged at the dock doors of an existing installation. Upon

further inspection, the technician discovers that forklift operators are hitting the antennas because

they are 2 inches (5 centimeters) in front of the protective pylons/ballards. Which of the following

would be the BEST solution?

A. Move the dock stands so they are further out of the travel path than the protective equipmentinstalled.

B. Remove the dock stands and install them somewhere else in the operation.



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C. Re-install the antennas so they protrude into the travel path further than the dock stands.

D. Replace the dock stands with smaller, less obtrusive dock stands.

Answer: A

QUESTION NO: 13

An RFID application at an automobile distributorship must be able to inventory the cars from a

central location. Which one of the following RFID technologies would work BEST in this

application?

A. Passive high frequency (HF)

B. Passive ultra high frequency (UHF)

C. Active UHF

D. Active surface acoustic wave (SAW)

Answer: C

QUESTION NO: 14

When installing an RFID system, lightening suppressors:

A. are optional because lightning operates at higher frequencies than RFID.

B. should be installed because of the potential severity of the effects of a lightening strike.

C. are not needed because they are expensive and the probability of a facility being hit by lightning

is low.

D. are only needed in certain states within the United States.

Answer: B

QUESTION NO: 15

If a manufacturer ships items to the United States Department of Defense (DoD) and major

retailers, which of the following standards applies to the use of RFID tags to identify the cartons

and pallets they ship?

A. Universal Product Code (UPC)

B. None, no standards exist

C. EPCglobalInc.D. International Organization for Standardization (ISO) 9001



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Answer: C

QUESTION NO: 16

Using a spectrum analyzer, it is determined that the source of interference in a passive ultra high

frequency (UHF) system is the vehicle-mounted computers. The computers are operating in

spread-spectrum 915 MHz mode. Which of the following would be the MOST efficient method of

resolving this situation?

A. Replace the radio cards in the computer terminals with 802.11 radio cards and change the

access points to support 802.11 operation as well.

B. Surround the computer terminals with a shield so the terminals cannot emit signals into the

interrogation zones.

C. Remove the computer terminals, replacing them with computers that operate in a differentfrequency range and update the wireless network to support this change.

D. Replace the radio cards in the computer terminals with 802.11 radio cards and the computer

terminals will be able to communicate over the existing access points.

Answer: A

QUESTION NO: 17

Which of the following would be the BEST reason to use a hand-held rather than stationary

interrogator?

A. Aesthetic appeal

B. User abilities

C. System support

D. Functional capabilities

Answer: D

QUESTION NO: 18

A client has validated that tags are reading at the point of application by using an automated print-

and-apply device. At the end of the manufacturing line, the same tags have now failed. Upon

inspection of the manufacturing process, the operator determines that the tags are being bent.

Which of the following would be the BEST solution for this problem?

A. Adjust the tag placement.

B. Remove the tagging operation from the manufacturing process.



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C. Order sputtered-antenna tags for the client.

D. Change the tag manufacturing process.

Answer: A

QUESTION NO: 19

If an interrogator and associated antennas are located at a dock door with a desk for the traffic

coordinator, which of the following may be a concern?

A. The forklift drivers would have access to the interrogator data.

B. The traffic coordinator may be over exposed to radio waves.

C. The traffic coordinator would rely too much on the RFID data.

D. The interrogator could not be connected to the network.

Answer: B

QUESTION NO: 20

Which of the following air interface standards would be applicable to the development of a passive

system for the tagging of cases and pallets?

A. ISO/IEC 18000-3

B. ISO/IEC 18000-7

C. Electronic Product Code (EPC) Tag Data Standard 1.27

D. International Organization for Standardization/International Electrotechnical Commission

(ISO/IEC) 18000-6, Type C

Answer: D

QUESTION NO: 21

When assisting with a site analysis for an active Real Time Locating System (RTLS), which of the

following will have the LEAST affect upon the number of interrogators installed?

A. The size of the area to be covered.

B. The ampere-hour rating of the tag's battery.

C. The frequency of the system selected.

D. The resolution required for locating items.

Answer: B



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QUESTION NO: 22

In a portal application where it is desirable for the interrogator to be triggered to read at certain

times, which of the following would be the preferred trigger method?

A. Use a photo optic sensor.

B. Use a camera focused on the portal so that the system administrator can trigger the

interrogator.

C. Have a linear antenna.

D. Have an employee plug-in the interrogator at desired time.

Answer: A

QUESTION NO: 23

A manufacturing plant uses plastic totes and attaches passive ultra high frequency (UHF) inserts

to the totes for tracking purposes. A high percentage of the tags are failing. Which of the following

is the MOST likely cause?

A. There is electrostatic discharge (ESD) from the plastic totes.

B. The ambient temperature of 50 C (122 F) is too high.

C. The interrogator antenna is too close to the tag.

D. The totes are damp causing the tags to short out.

Answer: A

QUESTION NO: 24

Ideally, as a tag passes though the antenna read window it should be:

A. at least 30 feet (9.3 meters) from the antenna.

B. on the same plane as the antenna.

C. facing away from antenna.

D. inside metal foil.

Answer: B

QUESTION NO: 25



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Ultra high frequency (UHF) output power is measured as:

A. Effective Radiated Power (ERP).

B. decibels.

C. decibels per meter.


Answer: D

QUESTION NO: 26

Anti-collision protocols in passive RFID systems allow:

A. polite interactions between many interrogators in a single read zone.

B. multiple tags to be read in a single pass through an interrogation zone.C. antennas to operate without interfering with one another.

D. random tags to collide into each other.

Answer: B

QUESTION NO: 27

When an interrogator queries Electronic Product Code (EPC) Class 1 Gen 2 tags, the tag has the

responsibility to perform which of the following?

A. Place a randomly generated number in its slot counter.

B. Tell the interrogator the channel the tag is going to use.

C. Return its unique identification number on power up.

D. Tell the interrogator the tag manufacturer.

Answer: A

QUESTION NO: 28

Which of the following RFID tags is BEST used for tracking in-transit assets carrying explosives?

A. Active tags using power in excess of 15 milliwatts and an interrogator system strategic installed

on a predetermined route.

B. Passive tags that require the interrogator to be placed less than 9.7 feet (2.9 meters) from the

tagged asset.

C. Passive tags using strategically installed modulated backscatter interrogators.



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D. Active tags using power less than one milliwatt with an interrogator system strategically

installed along a predetermined route.

Answer: D

QUESTION NO: 29

In a facility with several automated print and apply printers, cases frequently get to the palletizer

without RFID labels. One way to correct this is to:

A. have an interrogator on the palletizer.

B. install an interrogation zone down stream from the labeler with a reject system.

C. use better quality labels.

D. use a hand-held interrogator to scan for missing labels at end of production line.

Answer: B

QUESTION NO: 30

One reason that the ultra high frequency (UHF) Electronic Product Code (EPC) Gen 2 air interface

protocol functions well in a multiple interrogator environment is that it:

A. requires double sideband (DSB) modulation.

B. allows for separate transmit and receive channels.

C. allows the tags to initiate communications.

D. allows interrogator manufactures to interpret regional regulations.

Answer: B

QUESTION NO: 31

A company wants to track personnel using RFID with a resolution within 10 feet (3.1 meters).

Which of the following RFID systems would provide the BEST results?

A. Active Real Time Locating System (RTLS)

B. Global Positioning System (GPS)

C. Passive ultra high frequency (UHF) RFID system with hand-held interrogators

D. Passive high frequency (HF) RFID system with interrogators at entry points

Answer: A



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QUESTION NO: 32

Which of the following would be the reason for enabling Simple Network Management Protocol

(SMNP) traps on installed interrogators?

A. Catch intruders attempting to hack your interrogators.

B. Provide health status monitoring of the interrogator in question.C. Perform behavioral analysis of your operations workforce.

D. Encrypt data as it is released by the interrogator.

Answer: B

QUESTION NO: 33

When testing for best placement of a tag on a case of liquid product such as water, look for:

A. dynamic air gaps.

B. static air gaps.

C. null air gaps.

D. no air gaps.

Answer: B

QUESTION NO: 34

The reflection of RF energy from a floor or nearby reflective surfaces can cause a passive ultra

high frequency (UHF) RFID system to miss tags because of:

A. constructive interference.

B. changes in the air interface's modulation depth.

C. interrogator antenna diversity.

D. deconstructive interference.

Answer: D

QUESTION NO: 35

Which of the following types of ultra high frequency (UHF) antennas provide the BEST range?

A. Isotropic

B. Linear

C. Circularly polarized



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D. Waveguide

Answer: B

QUESTION NO: 36

In package tracking systems, read-only tags are unable to be used because the destination postal

code is not contained within the tag. Read-only tags have been proposed to work in a manner so

as to read the read-only tag and then access the package tracking company's database to

determine the appropriate sorting, based on the postal code within the database. Which of the

following would be a reason that this would not be successful?

A. When recording the destination information at package pickup it is feared that the wrong postal

code will be entered.

B. Distribution of the read-only tags to the drivers requires that each driver have a specific

sequence of numbers in the tag.

C. Read-only tags are not able to be reused and re-write tags can be re-used.

D. Using a reference number instead of the postal code for sorting depends upon a

communications link that is not completely reliable.

Answer: D

QUESTION NO: 37

Which of the following statements concerning health and safety issues with RFID systems is

accurate?

A. Long term exposure to passive tags has been shown to cause tumors.

B. Exposure to passive tags has no detrimental effects.

C. Equipment is harmful only if it is damaged.

D. Regulations only apply if the system is exceeding manufacturer specifications.

Answer: B

QUESTION NO: 38

When installing a dock door interrogator system, which of the following should be done after

installation?

A. Backend application testing.

B. Installation of interrogator power.



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C. Assignment of network addresses.

D. Testing for interference.

Answer: A

QUESTION NO: 39

Which of the following materials have absorptive properties in relation to ultra high frequency

(UHF)? (Select TWO).

A. Metal

B. Damp cardboard

C. Conductive liquids

D. Glass

Answer: B,C

QUESTION NO: 40

Cases are going to be tagged and stored in a humid, high temperature area. Which of the

following types of labels would be needed?

A. Paper with gum adhesive.

B. Poly-coated with water base adhesive.

C. Poly-coated with gum adhesive.

D. Direct thermal with gum adhesive.

Answer: C

QUESTION NO: 41

Integrated Circuit Cards (Smart Cards) conforming to International Organization for

Standardization/International Electrotechnical Commission (ISO/IEC) 15693 operate at what

frequency?

A. 128 kHz

B. 315 MHz

C. 13.56 MHz

D. 915 MHz

Answer: C



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QUESTION NO: 42

RFID labels that were being printed correctly are now being printed with half the image area

across two labels and the tags cannot be validated. Which of the following should the technician

check FIRST?

A. Printer speed

B. Communications protocol

C. Print drivers

D. Sensor settings

Answer: D

QUESTION NO: 43

A manufacturer of canned goods arranges tagged cartons in nine stacks nine high on a pallet. The

passive ultra high frequency (UHF) tags on the center stack have a high failure rate on reads.

Which of the following would be the BEST way to improve the read rate?

A. Arrange the antennas on the top so they focus on the center stack.

B. Read the individual cartons as the pallet is being built.

C. Double the number of antennas using 50-ohm splitters.

D. Add a second interrogator running at 13.56 MHz.

Answer: B

QUESTION NO: 44

When verifying and troubleshooting low read rates at an installed site with fixed interrogators, it isBEST to use a:

A. bar code verifier.

B. digital voltmeter.

C. portable interrogator.

D. fixed antenna that can be moved from door to door.

Answer: C

QUESTION NO: 45



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An interrogator that supports four antennas only has two antennas attached and the customer

reports that the interrogator is not functioning. Which of the following may be the cause of the

problem?

A. The antennas were of different polarization.

B. The interrogator must have four antennas connected to operate.

C. Terminators were not placed on the unused antenna ports.

D. The antenna's gain was too high causing the interrogator to overheat.

Answer: C

QUESTION NO: 46

Loss of connection between an interrogator and the edgeware/middleware would result in which of

the following?

A. Tag data would be sent directly to the Warehouse Management System (WMS).

B. No tag data would be processed.

C. Only interrogator status would be tracked.

D. Only active RFID tag data would be processed.

Answer: B

QUESTION NO: 47

An RFID interrogator is reading tags on cartons on a conveyor and cartons are directed to the

proper truck by electrically-operated gates on the conveyor line. A carton reaches the first gate in

one-half second. The decision to open a gate is BEST made by:

A. a universal serial bus (USB) connection to the remote server.

B. an interrogator with WiFi capability.C. an interrogator with an edge-server capability.

D. an Ethernet connection to the remote server.

Answer: C

QUESTION NO: 48

A large number of antennas are being damaged at the dock doors of an existing installation. Uponfurther inspection, the technician discovers that forklift operators are hitting the antennas because

they are 2 inches (5 centimeters) in front of the protective pylons/ballards. Which of the following

would be the BEST solution?



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A. Replace the dock stands with smaller, less obtrusive dock stands.

B. Move the dock stands so they are further out of the travel path than the protective equipment

installed.

C. Remove the dock stands and install them somewhere else in the operation.

D. Re-install the antennas so they protrude into the travel path further than the dock stands.

Answer: B

QUESTION NO: 49

A container yard has been upgraded with an active RFID system for tracking containers moving to

different locations within the yard. Recently, the system monitor has observed a decrease in

interrogator reporting. Which of the following may be the cause of this change?

A. The yard manager installed wooden walls to separate various areas within the yard.

B. The 50 workers in the container yard were issued cellular telephones for reporting container

conditions to the yard manager.

C. The company has introduced a new line of propane-powered forklifts in the yard.

D. The temperature in the area has dropped to 0 C (32 F) and this temperature has been

sustained for the past 2 weeks.

Answer: D

QUESTION NO: 50

Recent protocols have been written to support the reading of 1,700 tags per second with passive

ultra high frequency (UHF) systems. To read this many tags in such a brief period of time, the

interrogator should use:

A. anti-collision.

B. passive backscatter.C. a tag magnifier.

D. tag isolation.

Answer: A

QUESTION NO: 51

Initial reads of a pallet on a shrink wrap machine produces 100% carton reads. Using the same

equipment, subsequent attempts to read after shrink wrapping result in only 80% of the cartons

being read. Which of the following is MOST likely the cause?



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A. The shrink wrap machine produces electrostatic discharge (ESD) which damaged the tags.

B. The shrink wrap acts as a non-conductive material affecting reads.

C. The shrink wrap machine is spinning the pallet at a rate that is affecting reads.

D. The shrink wrap material is RF reflective preventing tags from being read.

Answer: A

QUESTION NO: 52

A passive ultra high frequency (UHF) RFID system reading cartons on a conveyor stopped

working when the conveyor speed was increased. Which of the following would be the FIRST

action to take to adapt the system to high-speed operation?

A. Add antennas to increase the time tags are in the interrogator field.

B. Increase the interrogator power.

C. Move the light sensor away from the direction of travel.

D. Rotate the antennas to point toward the cartons as they travel.

Answer: D

QUESTION NO: 53

When comparing ultra high frequency (UHF) passive to high frequency (HF) passive RFID, which

of the following statements is MOST accurate? (Select TWO).

A. HF is less susceptible to RF absorbent material and better for long read range applications.

B. UHF is more susceptible to RF absorbent material and better for high data rate applications.

C. UHF is able to operate in highly reflective environments and worse at anti-collision.

D. HF is more susceptible to highly reflective environments and better for close range applications.

Answer: B,D

QUESTION NO: 54

When installing cabling and wiring within a safety enclosure around an RFID interrogator, which of

the following should be done?

A. Remove screws from unused terminals.

B. Ensure all wiring sizes are the same.C. Use cable restraints only on wires greater than 8 American wire gauge (AWG).

D. Place wire numbers on all wires.



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Answer: D

QUESTION NO: 55

An RFID application using the Electronic Product Code (EPC) Class 1 Gen 2 protocol needs to

read the EPC code from the tag. It reads 96 bits from the tag, but the last 4 bytes of the EPC code

in Bank 1 are corrupted. Which of the following is MOST likely the cause of the problem?

A. The EPC code is stored in Bank 2.

B. The tag can store only 64 bits.

C. The access password must be non-zero.

D. The Protocol Control (PC) bits indicate an EPC length of 64 bits.

Answer: D

QUESTION NO: 56

Tags placed on small boxes uniformly stacked on a pallet are unreadable unless the pallet is

rotated. This is a symptom of tag:

A. polarity.

B. propagation.

C. shadowing.

D. size.

Answer: C

QUESTION NO: 57

Which of the following materials would cause the MOST attenuation of an RFID signal?

A. Green lumber

B. Glass

C. Foam

D. Water

Answer: D

QUESTION NO: 58



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Which of the following is an attribute of an inductively coupled system [e.g. low frequency (LF),

high frequency (HF)] that a capacitively coupled [e.g. ultra high frequency (UHF), uW] system

does not have?

A. Capacitive power circuitry.

B. Inductive coil antenna.

C. Inductive dipole antenna.

D. Capacitive material in which to store power.

Answer: B

QUESTION NO: 59

A customer has an existing RFID system that has been functioning accurately. The customer

starts a new product line and observes a dramatic decrease in read rates. Which of the following

would be the FIRST step to take to determine the cause of the decreased read rates?

A. Perform a tag placement test on the new product.

B. Attempt to read the new product using a hand-held interrogator.

C. Do a site assessment for sources of interference.

D. Examine the currently installed equipment for failed parts.

Answer: A

QUESTION NO: 60

An organization has received a shipment of Electronic Product Code (EPC) Class 1 Gen 2 RFID

tags from the manufacturer and is unable to read them with existing Class 1 interrogators. Which

of the following actions should be taken FIRST?

A. Replace the interrogators with updated models.B. Enable dense reader mode.

C. Perform a firmware upgrade.

D. Add an EPC decoder to the middleware.

Answer: C

QUESTION NO: 61

A company wants to track personnel using RFID with a resolution within 10 feet (3.1 meters).

Which of the following RFID systems would provide the BEST results?



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A. Passive ultra high frequency (UHF) RFID system with hand-held interrogators

B. Active Real Time Locating System (RTLS)

C. Passive high frequency (HF) RFID system with interrogators at entry points

D. Global Positioning System (GPS)

Answer: B

QUESTION NO: 62

An animal identification system is used in feedlots and transfer gates are equipped with 135 kHz

interrogators and are of a size to support one animal. When two animals attempt to get through at

the same time, a problem occurs because the:

A. animals expand the gates to a size where the second animal cannot be read.

B. animals are moving too slowly to be read only once.

C. 135 kHz systems do not have anti-collision algorithms.

D. 135 kHz interrogator system is broken because of the congestion.

Answer: C

QUESTION NO: 63

Which of the following RFID tags would be BEST for inconspicuous tagging of assets containing a

maximum of eight bytes of data and are inductively coupled?

A. Passive Gen 2 tag requiring line of sight backscatter interrogation.

B. Active 433.92 MHz tag with strategically installed fixed interrogators.

C. Passive 13.56 MHz tag that is affixed to the asset and camouflaged requiring continuous loop

interrogation.

D. Active 433.92 MHz tag requiring modulated backscatter interrogation.

Answer: C

QUESTION NO: 64

Which of the following materials would cause the MOST attenuation of an RFID signal?

A. Water

B. FoamC. Green lumber

D. Glass



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Answer: A

QUESTION NO: 65

An interrogator emits one watt from its antenna connector. The energy passes through a cable

with 3dB loss to a linearly-polarized antenna with 6dB gain. Which of the following would be the

Effective Isotropic Radiated Power (EIRP)?

A. 0.5 watt

B. 2 watts

C. one watt

D. 4 watts

Answer: B

QUESTION NO: 66

All of the following are true statements about passive RFID tags EXCEPT that they:

A. do not implement duty cycle control.

B. may transmit and receive on different channels.

C. contain batteries.

D. permit multiple sessions in the same interrogation zone.

Answer: C

QUESTION NO: 67

The length of a passive RFID interrogation zone can be doubled by:

A. adding another antenna on the other side.

B. selecting an antenna whose gain is 2dB greater than the original antenna.

C. placing reflective material across from the transmitting antenna.

D. adding another antenna on the same side.

Answer: A

QUESTION NO: 68

An RFID technician is troubleshooting an active RFID system to determine why an interrogator is

not reading tags in its area of coverage. Which of the following actions should the technician take?



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A. Relocate all antennas and change all interrogators.

B. Call the help desk; relocate antennas; change the interrogators; replace all tags.

C. Check and replace the batteries on all tags in the field; change all interrogators.

D. Check the power connection; check the local area network (LAN) connection; check the

antenna connection; use a test tag.

Answer: D

QUESTION NO: 69

In which of the following places would an RFID technician find the appropriate commands for

reading and writing data to a 433.92 MHz active RF tag?

A. Electronic Product Code (EPC) Tag Data Standard, 1.3

B. EPC ultra high frequency (UHF) Gen 2 v. 1.0.9

C. (ISO/IEC) 18000-7

D. International Organization for Standardization/International Electrotechnical Commission

(ISO/IEC) 18000-6, Part C

Answer: C

QUESTION NO: 70

An RFID system is to be used in a conveyor belt operation where single boxes with RFID labels

are to be read. Which of the following types of antennas would be MOST effective?

A. Horizontally polarized linear

B. Vertically polarized linear

C. Circularly polarized

D. Isotropic

Answer: C

QUESTION NO: 71

The technician is working with a passive ultra high frequency (UHF) system for a beverage

distributor. Which of the following tag locations would provide the BEST tag performance when

tagging a case of long-neck beverage bottles?

A. Lower left corner of the long end of the case.

B. Upper left corner of the short end of the case.



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C. Center of the bottom of the case.

D. Center of the top of the case.

Answer: B

QUESTION NO: 72

Workers who are in close proximity to passive RFID interrogators for long periods of time should

be aware of which of the following safety risks?

A. Exposure to nuclear radiation.

B. Potential for electrostatic shock.

C. None, interrogators pose no safety risks.

D. Exposure to radio waves.

Answer: D

QUESTION NO: 73

Interrogation zones that are found to be interfering with an existing system can BEST be resolved

by doing which of the following?

A. Replacing the existing components that are interfering.

B. Turning off the RFID system.

C. Shielding the zone with a reflective or absorptive material.

D. Upgrading the RFID system to Electronic Product Code (EPC) Class 1 Gen 2 specifications.

Answer: C

QUESTION NO: 74

In a single-channel European Conference of Postal and Telecommunications Administration

(CEPT) environment, interrogators operating in dense-reader mode are separated:

A. temporally.

B. physically.

C. spectrally.

D. logically.

Answer: A



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QUESTION NO: 75

In a portal application where it is desirable for the interrogator to be triggered to read at certain

times, which of the following would be the preferred trigger method?

A. Have a linear antenna.

B. Have an employee plug-in the interrogator at desired time.C. Use a photo optic sensor.

D. Use a camera focused on the portal so that the system administrator can trigger the

interrogator.

Answer: C

QUESTION NO: 76

A dock door portal must read multiple tags mounted on metal objects. Which of the following

should be done to help reduce the reflective effects of the metal objects in the field?

A. Increase the gain of the antennas.

B. Increase the power output of the interrogator.

C. Use a linear antenna on one side of the portal.

D. Use multiple antennas at angles to each other.

Answer: D

QUESTION NO: 77

Under Federal Communication Commission (FCC) rules, interrogators operating in dense-reader

mode are separated from one another:

A. spectrally.

B. logically.

C. temporally.

D. physically.

Answer: A

QUESTION NO: 78

A container yard has been upgraded with an active RFID system for tracking containers moving to

different locations within the yard. Recently, the system monitor has observed a decrease in

interrogator reporting. Which of the following may be the cause of this change?



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A. The 50 workers in the container yard were issued cellular telephones for reporting container

conditions to the yard manager.

B. The yard manager installed wooden walls to separate various areas within the yard.

C. The temperature in the area has dropped to 0 C (32 F) and this temperature has been

sustained for the past 2 weeks.

D. The company has introduced a new line of propane-powered forklifts in the yard.

Answer: C

QUESTION NO: 79

As the distance between tags in a passive ultra high frequency (UHF) RFID interrogation zone

decreases, which of the following is affected?

A. Coverage area of the interrogation zone.

B. Distance at which the tag can be read.

C. Power level of the field.

D. Time required to power the tag.

Answer: B

QUESTION NO: 80

If an interrogator and associated antennas are located at a dock door with a desk for the traffic

coordinator, which of the following may be a concern?

A. The traffic coordinator may be over exposed to radio waves.

B. The interrogator could not be connected to the network.

C. The traffic coordinator would rely too much on the RFID data.

D. The forklift drivers would have access to the interrogator data.

Answer: A

QUESTION NO: 81

Desktop industrial RFID-enabled bar code printers handle an inoperative tag by:

A. ignoring it and continuing.

B. sending an error to the host.C. ejecting the label.

D. printing 'void' or some other marking on the label.



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Answer: D

QUESTION NO: 82

A new batch of tags is received for an existing system. When the new tags are introduced into the

system, the interrogation zones stop transmitting tag data. Which of the following is MOST likely

the source of the problem?

A. The new tags are all bad.

B. A tag virus has been introduced by the new tags.

C. The new tags are the wrong type for the system.

D. The interrogators have issued the kill command to the tags.

Answer: C

QUESTION NO: 83

A passive ultra high frequency (UHF) RFID system has been installed for use outdoors in a winter

climate. Although the system has been designed and implemented for the region, the user should

be told that: (Select TWO).

A. there are temperatures that are beyond interrogator specifications.

B. there are temperatures that are beyond tag specifications.

C. ice and/or snow on tags can cause inaccurate readings.

D. low temperatures can crack antenna housings.

Answer: B,C

QUESTION NO: 84

When installing an RFID interrogator on a forklift, which of the following would be the BEST means

of ensuring proper grounding on the forklift?

A. Connect the antenna ground to the battery.

B. Use a volt meter to test for ground.

C. Refer to the equipment manuals.

D. Ground the interrogator to the frame.

Answer: C



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QUESTION NO: 85

For a corrugated case filled with liquor bottles containing metal lids, all of the following locations

are acceptable for optimizing the performance of a passive high frequency (HF) RFID smart label

EXCEPT on the: (Select TWO).

A. side near the top where there is the least amount of liquid.B. top near the metal lids.

C. side near the bottom where there is the most amount of liquid.

D. bottom where there is the most amount of glass.

Answer: B,C

QUESTION NO: 86

Which of the following technologies would provide the BEST read range when attached to a

corrugated metal freight container that is 40 feet (12.4 meters)?

A. Passive 860 - 960 MHz from a 4 watt interrogator/antenna

B. Active 2450 MHz, operating at 10 mW

C. Active 433.92 MHz, operating at 10 mW

D. Passive 13.56 MHz from a one watt interrogator/antenna

Answer: C

QUESTION NO: 87

A dense-reader interrogator:

A. can operate near other interrogators using the same frequency.

B. uses tag talks first access control.

C. will coexist with any number of other dense-reader interrogators.

D. can resolve thousands of tags per second.

Answer: C

QUESTION NO: 88

While troubleshooting an interrogation zone, a technician discovers that the antenna wires have

torn free of their connectors. Which of the following would be the FIRST step for the technician to

take?



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A. Attach the repaired cable to the antenna.

B. Crimp a new end on the cable.

C. Secure the cables so they cannot tear free again.

D. Power down the interrogator.

Answer: D

QUESTION NO: 89

RFID media should be stored in:

A. metal containers.

B. electrostatic discharge (ESD) protected packaging.

C. rolls of ten.

D. the order that it was received.

Answer: B

QUESTION NO: 90

Common sources of static electricity generation in printer encoders include:

A. mounting the facestock on the printer.

B. unwinding the facestock in high humidity environments.

C. threading the facestock through the printer.

D. unwinding the ribbon in low humidity environments.

Answer: D

QUESTION NO: 91

When choosing an RFID enabled printer, which of the following questions should be asked

FIRST? (Select TWO).

A. Will the printer encode EPCglobalInc. 64-bit Class 0 tags?

B. Does the printer support the tag being used in the application?

C. Does the software generating the label format support the printer?

D. Which interrogator is being used in the application?

Answer: B,C



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QUESTION NO: 92

When installing equipment into a proposed interrogation zone based on the site diagram, a

technician observes that the cooling fans at the dock doors are directly in the way of the dock

stands requiring installation. Which of the following actions should the technician take?

A. Remove the fans and place them on the floor just outside of the proposed interrogation zone.B. Contact the project manager to arrange a meeting with site management and determine the

best solution.

C. Cancel the installation because there are physical constraints preventing them from completing

the job as designed.

D. Remove the fans; install the dock stands, and then remount the fans to the dock stands to

complete the job.

Answer: B

QUESTION NO: 93

During identification cycles, in which of the following modes will interrogators respond to

commands from the network host?

A. Autonomous

B. Interactive

C. Amplitude modulation

D. Half-duplex

Answer: B

QUESTION NO: 94

Which of the following anti-collision protocols uses a synchronous scheme?

A. ALOHA

B. Stream cipher

C. Digital modulation

D. Binary tree

Answer: D

QUESTION NO: 95



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In a high frequency (HF) passive system, the anticipated read range should be:

A. Between 16 and 32 feet (5 meters and 10 meters).

B. Between 3.2 and 16 feet (one and 5 meters).

C. Less than 3.2 feet (one meter).

D. Greater than 32 feet (10 meters).

Answer: C

QUESTION NO: 96

When reviewing the data content of a tag, the data length is less than expected. The MOST likely

cause of this would be that:

A. a tag constructed for fewer bits is being read.B. the battery pack in the interrogator needs to be changed.

C. power to the interrogator is shorting out.

D. software filters are set too low.

Answer: A

QUESTION NO: 97

Cases are going to be tagged and stored in a humid, high temperature area. Which of the

following types of labels would be needed?

A. Poly-coated with water base adhesive.

B. Direct thermal with gum adhesive.

C. Poly-coated with gum adhesive.

D. Paper with gum adhesive.

Answer: C

QUESTION NO: 98

When tracking items in an outdoor environment with minimum interference, which of the following

RFID systems will provide the longest read range?

A. Active RFID

B. Passive low frequency (LF)

C. Passive high frequency (HF)



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D. Passive ultra high frequency (UHF)

Answer: A

QUESTION NO: 99

The purpose of anti-collision is to:

A. resolve (singulate) tags in the interrogator field.

B. ensure that adjacent interrogators do not interfere.

C. guard against tags using the wrong frequency.

D. ensure that tags do not come in contact with one another.

Answer: A

QUESTION NO: 100

A few months after installing an active Real Time Locating System (RTLS) in a warehouse,

several of the tags stop working. Which of the following is MOST likely the reason?

A. The tags were placed too close to each other causing shadowing and coupling.

B. The tag's frequency was inadvertently changed.

C. The interrogator's frequency has inadvertently changed.

D. The active tag was queried too often or set to transmit too often.

Answer: D

QUESTION NO: 101

Which of the following RFID tags would be BEST for inconspicuous tagging of assets containing a

maximum of eight bytes of data and are inductively coupled?

A. Active 433.92 MHz tag requiring modulated backscatter interrogation.

B. Passive 13.56 MHz tag that is affixed to the asset and camouflaged requiring continuous loop

interrogation.

C. Passive Gen 2 tag requiring line of sight backscatter interrogation.

D. Active 433.92 MHz tag with strategically installed fixed interrogators.

Answer: B



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QUESTION NO: 102

A conveyor system has cartons that may be standing up or lying on the side. Which of the

following antenna configurations would work BEST for reading these cartons? (Select TWO).

A. A circularly polarized antenna.

B. Two linear antennas, one vertical and the other horizontal.C. A linear antenna.

D. An isotropic antenna.

Answer: A,B

QUESTION NO: 103

When installing a conveyor tunnel, antennas should be placed:

A. on the same side of the conveyor with radiation patterns not overlapping away from the

conveyor path.

B. underneath the conveyor with radiation patterns overlapping in the area under the conveyor.

C. around the conveyor with radiation patterns overlapping along the conveyor path.

D. around the conveyor with radiation patterns overlapping away from the conveyor path.

Answer: C

QUESTION NO: 104

Automated encode, print and apply printers are used:

A. for tagging individual produce items.

B. when cases are of assorted sizes.

C. for high volume manufacturing.

D. when labels need to be placed on the bottom of cases.

Answer: C

QUESTION NO: 105

Which of the following International Telecommunication Union (ITU) regions allows both one

channel and multiple channel operations; allows for a 10% duty cycle one channel and Listen

Before Talk (LBT) on a separate multiple channel band?

A. Radio region 4 - Australia



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B. Radio region 1 - Europe

C. Radio region 5 - Asia

D. Radio region 2 - The Americas

Answer: B

QUESTION NO: 106

According to European Norm (EN) 302-208, installations address dense-reader environments

using:

A. Listen Before Talk (LBT).

B. frequency hopping spread spectrum.

C. direct sequence spread spectrum.

D. interrogator talks first.

Answer: A

QUESTION NO: 107

All of the following are true of widely implemented "slap and ship" programs EXCEPT they:

A. are lower in cost than application in manufacturing.

B. are more susceptible to electrostatic discharge (ESD) than in-line automatic applicators.

C. make it difficult to optimize label application for the container.

D. are more likely to break the bond between the antenna and the chip.

Answer: A

QUESTION NO: 108

The higher frequency ranges of RFID [e.g. ultra high frequency (UHF), microwave] offer which of

the following as advantages over the lower frequencies? (Select TWO).

A. There are fewer regulatory issues.

B. There is greater range.

C. They have a higher data rate.

D. They work well around water or body tissue.

Answer: B,C



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QUESTION NO: 109

North America is in which of the following International Telecommunications Union (ITU)

regulatory regions?

A. 3

B. 4C. 2

D. One

Answer: C

QUESTION NO: 110

A printer continuously reports an error message stating that an RFID tag is not found although thetag is visible. The MOST common reason would be that the:

A. label manufacturer has locked the tags.

B. labels are loaded in the printer backwards.

C. manufacturer's type of label is not set in the configuration.

D. printer has the wrong encoder installed.

Answer: C

QUESTION NO: 111

Which of the following conditions could occur as a result of an improper ground in an installed

RFID system?

A. Spikes in voltage could cause the interrogator to power on other devices in the area.

B. Tags could be overpowered causing them to fail.

C. Interrogation zones may not be effective because of electrical interference in the zone.

D. Electrical disturbances could cause the interrogator to fail.

Answer: D

QUESTION NO: 112

Backscattering operates by:

A. alternating between linear and circular polarization.

B. transmitting with power from the interrogator.



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C. changing the reflection coefficient of the antenna.

D. using spread-spectrum to equalize the power over the band.

Answer: C

QUESTION NO: 113

Which of the following is the maximum output power of the interrogator at the connector between

the interrogator and the antenna according to Federal Communication Commission (FCC) rules for

902-928 MHz RFID?

A. 500 milliwatts

B. 4 watts

C. One watt

D. 100 milliwatts

Answer: C

QUESTION NO: 114

An RFID system is to be used in a conveyor belt operation where single boxes with RFID labels

are to be read. Which of the following types of antennas would be MOST effective?

A. Isotropic

B. Horizontally polarized linear

C. Vertically polarized linear

D. Circularly polarized

Answer: D

QUESTION NO: 115

The protocol used for control of the interaction between the tag and interrogator is known as the:

A. cycle interface.

B. network interface.

C. data interface.

D. air interface.

Answer: D



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QUESTION NO: 116

When installing a closed-loop active RFID system to track a manufacturing process, which of the

following standards must be met?

A. EPCglobalInc. standard

B. Standards are not required.C. International Organization of Standardization (ISO) 9000

D. Real Time Locating System (RTLS) standard

Answer: B

QUESTION NO: 117

All of the following help solve multiple interrogator environment issues EXCEPT:

A. using absorptive material.

B. using multi-protocol interrogators.

C. single side band modulation.

D. separate transmit and receive channels.

Answer: B

QUESTION NO: 118

Prior to installation of RF equipment, which of the following should be evaluated as potential

sources of interference?

A. Manual dock doors

B. Metal racking

C. Pallet jacks

D. Public address system/intercom

Answer: D

QUESTION NO: 119

A library wants to use RFID to track books, tapes and other materials, to automate the checkout

process and track items leaving the library through a portal. Which of the following types of tags

would BEST meet their requirements?

A. Passive high frequency (HF) tags at 13.56 MHz



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B. Surface Acoustic Wave (SAW) tags

C. Passive low frequency (LF) tags at 125 kHz

D. Passive ultra high frequency (UHF) tags at 2450 MHz

Answer: A

QUESTION NO: 120

A site diagram calls for two read points to be installed from the same structure between the dock

doors. When the interrogators are placed, the operator discovers that they will not fit where the

architect has planned. Which of the following would be the BEST solution?

A. Purchase new interrogators that are the appropriate size for the application and install them.

B. Consult the system architect to resolve the situation.

C. Mount the interrogators outside the dock doors.

D. Move the interrogators above the overhead doors and continue the installation.

Answer: B

QUESTION NO: 121

A container yard unloads 40 foot (12.4 meter) containers from a freighter. As a container is lifted,

the active tag is read, however other tags still on containers on the freighter are also read. A

solution to this problem would be to:

A. trigger the tag read at some other point.

B. install Yagi antennas.

C. increase the power level of the interrogator.

D. install circularly polarized antennas.

Answer: A

QUESTION NO: 122

When mounting an interrogator on a vehicle, the MOST important consideration would be:

A. ensuring read capabilities.

B. preventing damage to the interrogator.

C. employee safety.D. making the vehicle look good.



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Answer: C

QUESTION NO: 123

Automated encode, print and apply label applicators can:

A. precisely place labels on cases.

B. encode more data than a table top printer.

C. only use RFID labels.

D. encode more than one label at a time.

Answer: A

QUESTION NO: 124

North America is in which of the following International Telecommunications Union (ITU)

regulatory regions?

A. 3

B. One

C. 2

D. 4

Answer: C

QUESTION NO: 125

Printers should be installed to meet Electronic Product Code (EPC) compliance in manufacturing

at the: (Select TWO).

A. finished case pack area.

B. delivery area.

C. receiving area.

D. palletization area.

Answer: A,D

QUESTION NO: 126

Backscattering operates by:



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A. transmitting with power from the interrogator.

B. alternating between linear and circular polarization.

C. using spread-spectrum to equalize the power over the band.

D. changing the reflection coefficient of the antenna.

Answer: D

QUESTION NO: 127

In which of the following places would an RFID technician find the appropriate commands for

reading and writing data to a 433.92 MHz active RF tag?

A. Electronic Product Code (EPC) Tag Data Standard, 1.3

B. EPC ultra high frequency (UHF) Gen 2 v. 1.0.9

C. International Organization for Standardization/International Electrotechnical Commission

(ISO/IEC) 18000-6, Part C

D. (ISO/IEC) 18000-7

Answer: D

QUESTION NO: 128

High frequency (HF) RFID systems are thought to create interference with:

A. liquid crystal display (LCD) projectors and plasma displays.

B. oceanographic exploration and submarines.

C. cellular telephone and wireless personal computer (PC) cards.

D. radio astronomy and amateur radios.

Answer: D

QUESTION NO: 129

An Electronic Product Code (EPC) Class 1 Gen 2 RFID system reads the EPC data from memory

bank zero, but the 64-bit EPC code is always zero. Which of the following is MOST likely the

cause of the problem?

A. The EPC code is stored in Bank 1.

B. The EPC code was never written to the tag.C. The access password is zero.

D. The tag has been killed.



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Answer: A

QUESTION NO: 130

The technician is preparing to place the light break sensor for a dock door interrogation zone.

Based on the following diagram, in which of the following numbered locations should the light

break sensors be placed? (Select TWO).

A. 5

B. 3

C. 6

D. 4

Answer: B,D

QUESTION NO: 131

Which of the following conditions would be MOST likely to cause a ghost tag read?



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A. There is a broken strap between the chip and the antenna on the tag.

B. The interrogator did not pass electronic product code (EPC) compliance testing.

C. There is RF interference in an interrogator zone.

D. There are too many tags within an interrogator zone.

Answer: C

QUESTION NO: 132

When troubleshooting an interrogation zone, an operator observes that the interrogator is not

responding to external input or reading tags. The lights are on indicating it has power and network

connectivity. Which of the following would be the next step for the operator to take?

A. Replace the antenna cable.

B. Replace the interrogator.

C. Reboot the interrogator.

D. Reboot the antenna.

Answer: C

QUESTION NO: 133

Passive ultra high frequency (UHF) tags perform BEST when communicating by:

A. near-field coupling.

B. Faraday coupling.

C. planar coupling.

D. far-field coupling.

Answer: D

QUESTION NO: 134

Which of the following temperatures is the lower limit of operation for a passive ultra high

frequency (UHF) tag to operate in a cold environment?

A. -40C (-40 F)

B. -80 C (-112 F)

C. 0 C (32 F)D. 20 C (68 F)



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Answer: A

QUESTION NO: 135

Passive RFID tags operating at 915 MHz can normally be read at:

A. close range only.

B. more than 322.6 feet (100 meters).

C. several feet (meters).

D. several inches (centimeters).

Answer: C

QUESTION NO: 136

Which of the following passive RFID air interface protocols uses a random number as part of the

initial identification process?

A. International Organization for Standardization (ISO) 18000, Part 6b

B. Electronic Product Code (EPC) Class 1 Gen 2

C. EPC Class 1 v1

D. ISO 15693

Answer: B

QUESTION NO: 137

Although the site diagram has points marked for locations of print-encode-apply printers, the

MOST important thing needed to complete the mounting is:

A. locating the WiFi access points.

B. knowing the load factor of the floor.

C. knowing the label orientation on each case.

D. having a large work area.

Answer: C

QUESTION NO: 138

High frequency (HF) output power is BEST measured as:



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A. dBm.

B. Effective Radiated Power (ERP).

C. decibels per meter.


Answer: A

QUESTION NO: 139

Interrogators placed at dock door portals are failing. When repairing the interrogators, the

manufacturer's technician observes that the interrogators are showing signs of water intrusion.

The BEST solution would be to:

A. place the affected interrogators in National Electrical Manufacturers Association (NEMA) 4

enclosures.

B. fill all openings in the interrogator with water resistant silicone.

C. install dock shelters on all dock doors utilizing RFID interrogation zones.

D. move the dock door stands back from the doors 4 feet (1.2 meters) to decrease exposure.

Answer: A

QUESTION NO: 140

An interrogator mounted on the roof of a forklift must be connected to an antenna mounted on the

movable load backrest. The BEST way to connect the antenna to the interrogator would be to use:

A. Bluetooth to avoid the physical connection.

B. the cable guides available from the forklift manufacturer.

C. a coil cord that will stretch with the movement of the forks.

D. a transition cable made with Category (CAT)-5 stranded cable where flexing will occur.

Answer: B

QUESTION NO: 141

When sending boxes into an interrogation zone where orientation cannot be assured, which of the

following tags will MOST likely read successfully?

A. Phased-dipoleB. Dual-dipole

C. Single-dipole



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D. Keyed-dipole

Answer: B

QUESTION NO: 142

Tags applied in a frozen food manufacturer's process are falling off the products before they leave

the freezer. Which of the following is MOST likely the source of the problem?

A. The applicator is not properly applying the tags to the product.

B. The food is thawing, creating moisture under the tag so it no longer sticks.

C. The adhesive used is not appropriate for the cold environment.

D. The RFID chip is heating up as it is being read.

Answer: C

QUESTION NO: 143

In a conveyor application, which of the following would be MOST important for getting consistent

reads?

A. Adding an additional interrogator to increase coverage.

B. Speeding up the conveyor.

C. Slowing down the conveyor until the read rate is acceptable.

D. Angling the antennas to increase the time the tag is in the interrogation zone.

Answer: D

QUESTION NO: 144

A technician is assisting with a site analysis of a passive ultra high frequency (UHF) RFID system

for a conveyor application requiring several antennas to be placed in close proximity. The BEST

reason for using absorptive materials would be to:

A. absorb the RF from outside interference sources.

B. protect the interrogator's receiver from becoming saturated.

C. increase the size of the field pattern covered by the antennas.

D. decrease the likelihood of electrostatic discharge (ESD) affecting performance.

Answer: B



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QUESTION NO: 145

The International Telecommunications Union (ITU) has divided the world into radio regions. ITU

region 2 includes which of the following geographical areas?

A. Africa

B. North AmericaC. Europe

D. Australia

Answer: B

QUESTION NO: 146

Based on the following diagram, if antennas are located at locations 2 and 4, at which of thefollowing locations should a smart label applicator be placed?

A. one

B. 7

C. 9

D. 6

Answer: A

QUESTION NO: 147



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Based on the diagram below, if antennas are located at points 2 and 4, at which of the following

numbered locations should a presence detector be placed?

A. A light-break sensor should be placed at locations 3 and 5.

B. A light-break sensor should be placed at location one.

C. A proximity sensor should be placed at location 7.D. A proximity sensor should be placed at location one.

Answer: D

QUESTION NO: 148

Ideally, as a tag passes though the antenna read window it should be:

A. at least 30 feet (9.3 meters) from the antenna.

B. on the same plane as the antenna.

C. inside metal foil.

D. facing away from antenna.

Answer: B

QUESTION NO: 149

In a clamp forklift application, tags may:



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A. be crushed.

B. be easier to read.

C. be read at a higher rate.

D. last longer.

Answer: A

QUESTION NO: 150

When attaching a passive ultra high frequency (UHF) tag to an asset that is made of metal, the

technician would need a standoff between the tag and the metal surface:

A. so the tag is not detuned from the resonant frequency.

B. to keep the tag cool by having an air gap between surfaces.

C. because the magnetic properties of metals interferes with the tag transmitter.

D. to prevent the tag from being shorted out by the metal surface.

Answer: A

QUESTION NO: 151

It is important to know where an RFID inlay is located within a tag during printing because: (Select

TWO).

A. timing from leading edge is critical to the encoding process.

B. the inlay sets the speed of the printer.

C. printing over the chip may cause damage.

D. the inlay location directs the printer to print landscape or portrait.

Answer: A,C

QUESTION NO: 152

The automotive industry has implemented more RFID tags in their automobile immobilizers than

any other application. Which of the following is the dominant technology used?

A. 13.56 MHz high frequency (HF)

B. 125 - 150 kHz low frequency (LF)

C. 860 - 960 MHz ultra high frequency (UHF)D. 2.45 GHz UHF



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Answer: B

QUESTION NO: 153

A warehouse dealing with quantities of RF absorbing material has a portal using a single antenna

with reflective panels on all sides. The totes used to transport the material have tags mounted to

one end and are run through the portal in random orientations. Not all tags are being read. Which

of the following would be the BEST way to correct this problem?

A. Reduce the amount of material in the tote.

B. Change the type of tag used.

C. Add antennas on the other side of the portal.

D. Increase the radiated power.

Answer: C

QUESTION NO: 154

A network connected interrogation zone is not reporting reads, even though operators are passing

goods through the zone. The system administrator has no contact with the operators at the zone.

Which of the following would be the FIRST step to take when troubleshooting this interrogator

remotely?

A. Use original equipment manufacturer (OEM) software to connect to the interrogator.

B. Restart the interrogator.

C. Ping the interrogator.

D. Send maintenance to replace the interrogator.

Answer: C

QUESTION NO: 155

RFID printers are able to encode a single tag at a time because of their ability to isolate a tag. This

is achieved:

A. because characteristics of far-field communication allow for only one tag to be encoded.

B. by ensuring that there is at least 8 inches (20 centimeters) between inserts.

C. by positioning and tuning the antenna.

D. because metal case blocks external interference allowing for the tag to be isolated.

Answer: C



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QUESTION NO: 156

When installing equipment into a proposed interrogation zone based on the site diagram, a

technician observes that the cooling fans at the dock doors are directly in the way of the dock

stands requiring installation. Which of the following actions should the technician take?

A. Remove the fans; install the dock stands, and then remount the fans to the dock stands to

complete the job.

B. Remove the fans and place them on the floor just outside of the proposed interrogation zone.

C. Contact the project manager to arrange a meeting with site management and determine the

best solution.

D. Cancel the installation because there are physical constraints preventing them from completing

the job as designed.

Answer: C

QUESTION NO: 157

For two passive RFID tags the size of a business card, where one uses high frequency (HF) and

the other uses ultra high frequency (UHF) chip technology and a single interrogator antenna,

which of the following statements is MOST accurate?

A. Neither tag will be read due to tag on tag air interface collisions.

B. The HF and UHF tags can be read at approximately the same range.

C. The HF tag can be read at a range that is the radius of the interrogator's antenna.

D. The UHF tag's read range is less than the HF tag.

Answer: C

QUESTION NO: 158

A manufacturing line has the need to divert tagged product based on the RFID data. The current

controls for the divert gates operate through a Programmable Logic Controller (PLC) with available

dry contact ports. Which of the following is the MOST important interface for an interrogator to

have in order to connect with the PLC?

A. Digital input/output (I/O)

B. Ethernet

C. Fiber-optic

D. RS-232



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Answer: A

QUESTION NO: 159

An installed interrogator will not read a newly released tag format that the manufacturer claims the

interrogator supports. All of the hardware appears to be functional. Which of the following steps

should be taken to resolve this situation?

A. Upgrade the interrogator's firmware.

B. Replace the interrogator.

C. Replace the failed antenna cable.

D. Upgrade the antenna's firmware.

Answer: A

QUESTION NO: 160

Which of the following are functions of a scan tunnel on a conveyer mounted RFID system?

(Select TWO).

A. Ensures that only one item is read at a time.

B. Concentrates the RF energy.

C. Keeps dust out of the system.

D. Contains the RF energy of the field.

Answer: B,D

QUESTION NO: 161

When preparing for the installation of passive RFID forklift system, all of the following can be doneEXCEPT:

A. allowing ultra high frequency (UHF) and RF cabling to flex and bend with the movements of the

forks.

B. routing serial cables with hydraulic tubes.

C. mounting the RFID interrogator on the moving fork.

D. mounting antennas on the moving forks.

Answer: A



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QUESTION NO: 162

RF absorbing materials:

A. detune the transponder from its resonant frequency so the antenna can no longer absorb

enough RF energy to activate the transponder.

B. reflect the RF energy in multiple directions.C. shield the transponder.

D. reduce the signal to the transponder by dissipating the RF energy from the interrogator.

Answer: D


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