Chapter 3

004001 Chapter 3 URL URL (Computer Network) 2

(Sender) (Receiver)/ (Data) (Medium)/ (Protocol)

(Point To Point)

(Multipoint)

(Topology)Bus

Star

Ring

Mesh

Local Area NetworkMetropolitan Area NetworkWide Area Network (Protocol)

OSI (Open System Interconnection)

(Internet Service Provider)

() ( DSL) 24

Dial up

ISDN

DSL

Cable

Satellite

Fiber to home (FTTX)

(Internet)

TCP/IPTransmission Control ProtocolInternet Protocol

Internet ProtocolIP Address

Web Browser & Web Serer

Web BrowserInternet Explorer (IE) , Google Chrome , Mozilla Firefox

Uniform Resource Locator

Domain Name System

How DNS Works

Top-Level DomainGeneral / Generic

Country / Country-Code

.th

Thai Domain Name.co.th .or.th.ac.th.net.th .go.th.mi.th.in.th

Electronic MailSearch

Chat

File Transfer

E-Commerce

E-Banking

Game , Website , Classroom Online , Social Network etc.