Ch. *COMPUTER NETWORK*
1. Define computer network?
2. How some computers can be connected with rache other without using internet?
3. Explain any 3 advantages of networking.
4. What are the 3 types of network? Explain all of them.
5. List the different elements required to set up a network connection between computers.
Answers
Answer:
computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes. The interconnections between nodes are formed from a broad spectrum of telecommunication network technologies, based on physically wired, optical, and wireless radio-frequency methods that may be arranged in a variety of network topologies.
4.A computer network can be divided into the following types, based on the geographical area that they cover, they are:
1.LAN(Local Area Network)
2.MAN(Metropolitan Area Network)
3.WAN(Wide Area Network)
A local area network is a network, which is designed to operate over a very small geographical or physical area such as an office, building, a group of buildings, etc.
Generally, it is used to connect two or more personal computers through a communication medium such as coaxial, twisted-pair cables, etc.
WAN(Wide Area Network).
Local Area Networks came under existence in around 1970s. IEEE developed the specifications for LAN. The speed of this network varies from 10mbps(Ethernet network) to 1gbps(FDDI or Gigabit Ethernet).
In other words, a LAN connects a relatively small number of machines in a relatively close geographical area.
MAN(Metropolitan Area Network)
A Metropolitan Area Network is a bigger version of LAN that uses similar technology as LAN. It spans over a larger geographical area such as a town or an entire city.
It can be connected using an optical fiber cable as a communication medium. Two or more LAN's can also be connected using routers to create a MAN. When this type of network is created for a specific campus, then it is termed as CAN(Campus Area Network).