NETWORKING BASICS

• What is the Network ?• Network history ?• Network types ( LAN , MAN ,

WAN ) .• Host types (client , server) .• Server types . • Full duplex and Half duplex .

What is the Network ?

Two or more connected computers that can share

Resources such as :

• Data

• Printer

• Application

Network history ?

Mainframe

Network types ( LAN , MAN , WAN )

• Three main networking technologies are used to connect computers and networks together:– Local area network (LAN)– Metropolitan area network (MAN)– Wide area network (WAN)

LAN

Used to network computers located in a limited geographical area such as a room, floor, or building .

EXAMPLE OF A LAN

MAN

A MAN is used to interconnect networks that are larger than a LAN but smaller than a WAN.

EXAMPLE OF A MAN

WAN

• Spans a large geographic area

• Defined as an internetwork that connects many LANs

• Examples of WANs– The Internet

EXAMPLE OF A WAN

Host types (Client , Server)

• Client /Client networks

• Client / Server networks

Server types • File Server• Print Server• Web Server • Application Server• Proxy Server • Mail Server • Remote access Server • Database Server