Unit 4 Web Application and Security
Session 2 : Networking Fundamentals
Important Question Answers
1. What is Computer Network?
Answer: A computer network is a collection of computers and other hardware components interconnected by communication channels (cables or satellites) that allow sharing of resources and information.
2. What is P2P architecture?
Answer: Networks in which all computers have an equal status are called peer-to-peer networks. In peer-to-peer networks, there is no specifically designated server. Generally in such a network, each terminal has an equally competent CPU.
3. What is Client-Server architecture?
Answer: Networks in which certain computers have special dedicated tasks, providing services to other computers (in the network) are called client-server networks.
4. Define: Server and Client
Answer: Server: The computer(s) which provide services are called servers. The services provided by a server are – user authentication, file storage, internet access, hardware sharing, etc.
Client: The computer that uses services provided by servers are called clients. Users work on the client computers.
5. What is a Stand-alone Computer?
Answer: A computer that is not connected to a network is known as a Standalone computer.
6. What is Workstation / Node / Host?
Answer: A computer connected to a network is known as workstation / node / host.
7. What are the advantages of networking?
Answer: Benefits / Advantages of Networking :
(i) It breaks the barriers of distance, cost, and time.
(ii) It is very cost-effective as compared to telephone networks.
(iii) It enhances communication.
(iv) It allows to share all types of data viz text, audio, video, image, etc.
8. How many types of networks are on the basis of distance?
Answer: On the basis of distance or geographical spread, there are three types of networks :
(a) Local Area Network (LAN),
(b) Metropolitan Area Network (MAN),
(c) Wide Area Network (WAN)
9. What is LAN?
Answer: A local area network (LAN) is one that connects computers and devices in a limited geographical area up to 1 KM such as a home, school, computer laboratory, office building, or closely positioned group of buildings.
10. What are the advantages of LAN?
Answer: Advantages of LANs are : (i) Allow sharing of resources, i.e. hardware and software. (ii) Offers very high speeds (iii) sharing of peripherals like printers, scanners, etc.
11. What is MAN?
Answer: MAN stands for Metropolitan Area Networks. MAN is the network spread over a city. The purpose of MANs is to share hardware and software resources sharing. for example cable TV networks.
12. What is WAN?
Answer: A Wide Area Network (WAN) is a group of computers spread across countries. WAN is an interconnection of several smaller LANs, to form a big network. The WAN link computers to facilitate a fast and efficient exchange of information at lesser costs and higher speeds.
13. How many types of networks are on the basis of component role?
Answer: There are two types of networks on the basis of component roles. These are (i) Client-Server networks, (ii) Peer-to-Peer Networks
14. What is a dedicated server?
Answer: A computer that works as the server is only called a dedicated server. For example, mail server, file server, print server, etc. The server in a client-server network is a dedicated server.
15. What is the non-dedicated server?
Answer: A computer that does not work as sever only, can work as a client called a non-dedicated server. The server in a peer-to-peer network is a non-dedicated server.
16. What is Internet?
Answer: The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks.
17. What are the advantages of the Internet?
Answer: The Internet is one of the most useful technologies of modern times which help us in our daily, personal and professional life.
Advantages of the Internet are:-
(i) Internet is widely used by students, educational institutes; scientists, and professionals to gather information for research and general information.
(ii) Businesses use the Internet to access complex databases such as a financial databases.
(iii) The Internet is the largest encyclopedia for all age groups.
(iv) The Internet helps in maintaining contact with friends and relatives who live across different locations via Internet chatting systems and email software.
(v) Internet is also becoming a major source of entertainment for the general public.
