computer networking

Computer Networking
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Define a network. What is its need?
 A computer network is a system in which computers are connected to share information and resources.
 Computer networks help users on the network to share the resources and in communication.
Write two advantages and disadvantages of networks.
 Advantages:
1. Data or information can be shared among the user.
2. Fast communication can be achieved
 Disadvantages:
1. Expensive to install network.
2. Sophisticated Hardware and Software technology is required.
What is communication channel? Name the basic type of communication channels available.
 Communication channels mean the connecting cables that link various workstations.
 There are 3 basic types of cables:
1. Twisted Pair cables
2. Coaxial cables
3. Fiber-optic cables
What is MAC address?
A Media Access Control address (MAC address) is a unique identifier assigned to most network adapters or network interface cards (NICs) by the manufacturer for identification, and used in the Media Access Control protocol sublayer.
What is IP address?
A unique number consisting of 4 parts separated by dots, e.g. 165.113.245.2 Every machine that is on the internet has a unique IP number- if a machine does not have an IP number; it is not really on the internet.
What is a domain name? How is it alternatively known?
 The unique name that identifiers an internet site.
 Domain names always have 2 or more parts, separated by dots. The part on the left is the most specific, and the part on the right is the most general. E.g.:matisse.net
What are the various types of networks?
Network can be classified on the basis of their size, complexity and geographical spread. On the basis of geographical spread it can be classified as Local Area Network, Metropolitan Area Network and Wide Area Network.
What is the difference between MAN and WAN?
 A metropolitan area