FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Data communication system spanning states, countries, or the whole world is a) LAN b) WAN c) MAN Page 2 d) None of the mentioned Answer: b Explanation: WAN is the abbreviation for Wide Area Network. This network extends over a large geographical area. These are used to connect cities, states or even countries.

Detailed explanation-2: -* LAN is a data communication system within a building, plant or campus or between nearlybuilding. * A MAN is a data communication system covering an area the size of a town or city. * A WAN is a data Communication system spanning states, countries or whole world.

Detailed explanation-3: -These are sender, receiver, communication medium, the message to be communicated, and certain rules called protocols to be followed during communication. The communication media is also called transmission media. Figure 11.2 shows the role of these five components in data communication.

Detailed explanation-4: -Bus topology is a network type where every device is connected to a single cable that runs from one end of the network to the other. This type of network topology is often referred to as line topology. In a bus topology, data is transmitted in one direction only.

Detailed explanation-5: -The correct choice is (a) LAN. The best I can explain: LAN is an abbreviation for Local Area Network. This network interconnects computers in a small area such as schools, offices, residence etc. It is the most versatile kind of data communication system where most of the computer network concepts can be visibly used.