3. Contents
Computer Network
Types of Computer Network
LAN (Local Area Network)
Advantages of LAN
Disadvantages of LAN
WAN (Wide Area Network)
Advantages of WAN
Disadvantages of WAN
MAN (Metropolitan Area Network)
Advantages of MAN
Disadvantages of MAN
4. Computer Networks
A computer network is a set of
computers connected together for
the purpose of sharing resources.
5. Types of Computer Networks
1) LAN – Local Area Network
2) WAN – Wide Area Network
3) MAN – Metropolitan Area Network
4) PAN – Personal Area Network
5) VPN – Virtual Private Network
6) CAN – Campus Area Network
6. LAN (Local Area Network)
Covers a small area.
Connects computers within one office or
building.
Speed is typically 10Mbps to 1000Mbps.
9. Advantages of LAN
Resource Sharing
Communication
Application Sharing
Centralized IT Admin
Centralized Data
Internet Access Sharing
Data Security & Management
10. Disadvantages of LAN
Privacy Threat
Expensive to Install
Admin Time Required
Data Security Concerns
11. WAN (Wide Area Network)
Covers a large
area.
Connects
computers in
different cities &
countries.
WAN is Expensive.
WAN is not as fast
as LAN.
Transmission rate
is 56 Kbps to 50
Mbps.
12. Advantages of WAN
Communication Facilities
Remote Data Entry
Centralized Data
Entertainment
13. Disadvantages of WAN
Hardware, Software & setup Costs.
Hardware & Software Management
Costs.
Data Security concerns.
14. MAN (Metropolitan Area Network)
Covers area of city.
Larger than LAN but smaller than WAN.
Connects two or more LANs in city.
17. BASIS LAN MAN WAN
Full Form Local Area Network Metropolitan Area
Network
Wide Area Network
Range A communication network
linking a number of stations
in same local area. Range is
1 to 10 km
This network shares the
characteristics of packet
broadcasting networks.
Range is100 km
A communication network
distinguished from a Local
Area Network. Range is
Beyond 100 km
Media Used Uses guided media Uses guided as well as
unguided media
Uses unguided media
Speed A high speed i.e. 100kbps
to 100mbps
Optimized for a large
geographical area than
LAN.
Long distance
communications, which may
or may not be provided by
public packet network.
Cost cheaper costly expensive
Equipment
needed
NIC, switch and hub Modem and router Microwave, radio, infra-red
laser
protocols Attached Resource
computer network
(ARCNET), Token ring
Frame relay and
asynchronous transfer
mode(ATM)
ATM, FDDI, SMDS