CCNA Tutorial Part-1 (What is Network?)

CCNA Tutorial 

Written By...Md. Kabir Hosen

What is Network?

When one computer linking with another computer or more than one computer and purpose of sharing data then we can say its called Network. For network we need minimum two computers.

Types of Network:

We have three types of Network:

1.      LAN

2.      MAN

3.      WAN

Local Area Network (LAN): A LAN connects network devices over a relatively short distance.

Example: lab, school, or building.

 Data Transfer Speed: 10 Mbps

Uses devices: Repeater, Hub, Network Interface

Metropolitan Area Network (MAN): MAN, consists of a computer network across an entire city, college campus or small region. A MAN is larger than a LAN, which is typically limited to a single building or site.

Data Transfer Speed: Gigabit per second

Uses devices: Router, switch, Microwave Antenna

WAN (Wide Area Network):  WAN, occupies a very large area, such as an entire country or the entire world. A WAN can contain multiple smaller networks, such as LANs or MANs. The Internet is the best-known example of a public WAN.

Data Transfer Speed:  56 Kbps to 1.5444 Mbps

Uses devices: Router, WAN switch, Modem

What is topology?

A topology is the physical configuration of a network that determines how the network's computers are connected.

Physical  Topology

•  Classification of physical Topology
• Point-to-point
• Bus
•  Star
•  Ring
•  Mesh
•  Tree