Here is the description of Computer Networks. I discussed about the types of network. PAN (Personal Area Network), LAN (Local Area Network), WAN (Wide Area Network) and so on.

1. Computer Networks lab.
Course Title:
CSE 318
Course Code:
Submitted By:
Name: Md. Jiarul Islam
ID: 1834902595
Sec: B Batch: 49th
Dept. of CSE (DAY)
City University, Dhaka
Submitted To:
Name: Pranab Bandhu Nath
Senior Lecturer
CSE Department
City University, Dhaka
Submission Date: 08-05-2021

2. Computer Network Types
# There are many types of network:-
 PAN (Personal Area Network)  Up to 10 meter distance
 LAN (Local Area Network)  Up to 1 kilometer distance
 MAN (Metropolitan Area Network)  Up to 10 kilometer distance
 WAN (Wide Area Network)  State country
PAN(Personal Area Network)
PAN (Personal Area Network) is that connects computer/device within the range
of an individual persons. As PAN provides a network range within a persons range
typically within a range of 10 meters it is called as a personal area network. It
involves a computer, mobile phone, tablet, printer etc.
Thomas Zimmerman and others researchers M.I.T’s lab first developed the concept
of PAN.
Computer
Mobile
Printer
Headset
PDA

3. There are two types of PAN:-
 Wireless PAN:- Wireless Personal Area Network is connected through
signal such as infrared, bluetooth etc.
 Wired PAN:- Wired PAN is connected through cables/wires such as Firwire
or USB (Universal Serial Bus).
Application of PAN:-
 Home and Offices
 Organizations or Business sector
 Medical and Hospital
 School and Colleges
LAN (Local Area Network)
LAN (Local Area Network) connects network device in such a way that personal
computer and workstations can share data. These computers and devices are
connected together by a switch, or using a private addressing scheme as defined by
the TCP/IP protocol.
Wireless LANs are very popular these days, especially in homes, older office
building or cafeteria and other places where it is too much trouble to install cables.
There is a standards for wireless LANs called IEEE 802.11, popularly known as a
Wi-Fi. Which has become very widespread.

4. Fig: Wireless LAN network
MAN (Metropolitan Area Network)
A MAN (Metropolitan Area Network) covers a city. The best-known examples of
MANs are the cable television networks available in many cities. These systems
grew from earlier community antenna systems used in areas with poor over-the-air
television reception. In those early systems, a large antenna was placed on top of a
nearby hill and a signal was then piped to the subscribers’ houses.
At first, these were locally designed, ad hoc systems. Then companies began
jumping into the business, getting contracts from local governments to wire up
entire cities. The next step was television programming and even entire channels
designed for cable only. Often these channels were highly specialized, such as all
news, all sports, all cooking, all gardening, and so on. But from their inception
until the late 1990s, they were intended for television reception only.
Wireless
Router
Mobile
Laptop Printer
Tablet

5. Cable television is not the only MAN, though. Recent developments in highspeed
wireless Internet access have resulted in another MAN, which has been
standardized as IEEE 802.16 and is popularly known as WiMAX.
MAN
LAN
LAN
LAN LAN

6. WAN (Wide Area Network)
A WAN (Wide Area Network) spans a large geographical area, often a country or
continent. We will begin our discussion with wired WANs, using the example of a
company with branch offices in different cities.
There are two types of WAN: Switched WAN and Point-to-Point WAN. WAN is
difficult to design and maintain. Similar to a MAN, the fault tolerance of a WAN is
less and there is more congestion in the network. A Communication medium used
for WAN is PSTN or Satellite Link. Due to long distance transmission, the noise
and error tend to be more in WAN.
WAN’s data rate is slow about a 10th LAN’s speed, since it involves increased
distance and increased number of servers and terminals etc.