Chapter – 2 [Information Networks]- Short Questions and Answers

LAN. WAN, MAN, Computer Networks, Information Networks, Internet.

Q. What are the technologies involved in information networks?

Ans.  Information networks or computer networks are the convergence of two technologies, Computing and Telecommunication. This convergence resulted in LAN (Local area Network), MAN (Metropolitan Area Network), WAN (Wide Area Network) and the Internet. The most popular information networks are the Internet or World Wide Web. Internet is a large network through which information continuously flows.

Q. Define a Network?

Ans. The interconnection of computer systems and/or peripheral devices with transmission medium and data communication devices to share data and resources is called networks or a distributed data processing system in which multiple computers are linked together for the purpose of data communication and resource sharing.

Q. What are uses of networks?

Ans.  Networks allow users to share programs and data simultaneously. its allow users to share peripheral devices. Networks allow users to send email messages along with attachments (files). Some networks also provide tools for teleconferencing and videoconferencing.

Q. What are types of Networks?

Ans.    LAN (Local area Network)

MAN (Metropolitan Area Network)

WAN (Wide Area Network)

Q. What is LAN?

Ans.    LAN is Local area Network. It is a digital communication system capable of interconnecting a large number of computers, terminals and peripheral devices within a limited geographical area. It spans a small geographical area such as an office or a group of buildings e.g. College Lab etc. Its speed is faster than WAN.

Q. What is MAN?

Ans.  MAN stands for Metropolitan Area Network. A MAN connects an area larger than LAN but less than WAN, such as a city with dedicated or high-performance hardware e.g. Mobile phones etc. The purpose of MAN is to bypass the local telephone companies when accessing long distance services.

Q. What is WAN?

Ans.  WAN is a Wide Area Network. in digital communication system, which interconnects different sites, terminals and also enables different LANs to communicate each other. It spans a large geographical area such as among cities, countries or continents e.g. Internet. It is also known as long-haul network.

Q. What is an Internet?

Ans.  Internet is a network of connected computers that provides us a facility of exchange data, messages and files with other computers that are connected to the Internet. Due to invention of Internet the Globe is referred as “Global Village”. And Internet is an ocean of knowledge.

Q. What are uses of Internet?

Ans.  WWW, E-mail, telnet, File-Transfer Facility, Gopher, Chat groups, Intranet, Extranet

Q. What is WWW?

Ans.  WWW stands for World Wide Web. It is a collection of millions of uploaded web pages or web sites. It organizes the Internet related resources so that we can easily access the information available to the Internet. Hypertext transfer protocol (http) protocol is used for WWW.