Types of Network

-Types of Network

1. Personal Area Network (PAN)

• WPAN

2. Local Area Network (LAN)

• WLAN or LAWN

3. Metropolitan area network (MAN)

4. Campus area network (CAN)

5. Wide area network (WAN)

1. Personal Area Network (PAN) A personal area network (PAN) is a computer network used
for communication among computer devices (including telephones and personal digital
assistants) close to one person

• WPAN (Wireless Personal Area Network) PAN using IrDA or BLUETOOTH

2. Local Area Network (LAN) A network contained within one building or site is called a Local
Area Network (LAN).

• WLAN (Wireless LAN) or LAWN (Local Area Wireless Network) LAN using Wireless
connectivity

3. Metropolitan Area Network (MAN)

Metropolitan area networks, or MANs, are large computer networks usually spanning a city.
They typically use wireless infrastructure or Optical fiber connections to link their sites.

4. Campus Area Network (CAN) A campus area network (CAN) is a computer network made
up of an interconnection of local area networks (LANs) within a limited geographical area. It
can be considered one form of a metropolitan area network, specific to an academic setting.

5. Wide Area Network (WAN)
A WAN spans a large geographic area, such as a state, province or country. WANs often
connect multiple smaller networks, such as local area networks (LANs) or metro area
networks (MANs).

The world's most popular WAN is the Internet. -Intranet Intranet contained collection of
computers and networks within an organization (it may span the globe), connecting the
organization's members and/or employees to a range of computer services, resources, and
information. A set of network conventions and common tools are employed to give the
appearance of a single large network, even though the computers that are linked together
use many different hardware and software platforms. It's more than a fancy name for the
corporate LAN/WAN" -Extranet -Extranet contained collection of computers and networks
of an organization (it may span the globe), connecting to the other organization's members
and/or employees to a range of computer services, resources, and information. -Internet
Internet - A sprawling collection of computer networks that spans the globe, connecting
government, military, educational and commercial institutions, as well as private citizens
to a wide range of computer services, resources, and information. A set of network
conventions and common tools are employed to give the appearance of a single large
network, even though the computers that are linked together use many different
hardware and software platforms."

Introduction to Networks

Introduction

- What is Network?
A network is a set of computers using common protocols that sends and receives data and messages enabling two or more computers to communicate with each other.
-Protocols

A formal description of message formats and the rules that two or more machines follow to exchange messages.

-Types of Protocols

1. TCP/IP ( Transmission Control Protocols/ / Internet Protocols)
2. UDP (User Datagram Protocols )
3. HTTP (Hyper Text Transfer Protocols)
4. FTP (File Transfer Protocols)
5. SMTP (Simple Mail Transfer Protocols)
6. POP3 (Post Office Protocols 3)
-Classification of Network

• Networks can be classified by size

–Small

• privately-owned

• cover a small area

• high data rates

–large

• owned/operated by a network provider

• large capacity

• often have an irregular topology