2. It is a collection of local-area networks (LANs) or other networks that communicate with one another.

3. It involves messages routed in their entirety, one hop at a time. It is a message sent as complete unit. It evolved from circuit switching and was the precursor of packet switching.

4. It transmits data across digital networks by breaking it down into blocks or packets for more efficient transfer using various network devices. It is a mode of transmission in which the message is broken into number of parts.

5. It is a method of implementing telecommunication network in which two network nodes establish a dedicated communication channel (circuit) through the network before the nodes may communicate.

6. It is a networking device that forwards data packets between computer networks.

7. It modulates and demodulates data between the computer and the internet.

8. It is a hardware device about the size of an external modem that converts digital data frame from the communication link.

9. It is a transfer mode for switching and transmission that efficiently and flexibly organizes information's into cells.

10. It is where Users get a high speed bandwidth connection from a phone wall jack on an existing telephone network.

11. It refers to technology that allows us to communicate without using cables or wires.

12. It is a professional association that develops, defines, and reviews electronics and computer science standards. Its mission is "to foster technological innovation and excellence for the benefit of humanity.

13. It is a security algorithm for IEEE 802.11 wireless networks. Introduced as part of the original 802.11 standard ratified in 1997, its intention was to provide data confidentiality comparable to that of a traditional wired network.

14. It is a computational architecture that involves client processes (service consumers) requesting service from server processes.

18. In this type of client server environment the user

interface, business logic & data logic are present

in same system.

19. In this kind of client server environment an additional middle-ware is used that means client request goes to server through that middle layer and the response of server is firstly accepted by middle-ware then to client.

20. The main function of this machines is to access, hold and transfer all files and data from other computer machine over the computer network. What machine is this?

21. This type of server store and distribute files. Multiple clients or users may share files stored on this server.

22. This type of server receive emails sent to a user and store them until requested by a client on behalf of said

user.

23. This type of server uses the virtual hardware as usual, and the hypervisor passes the actual computation and

storage needs onto the real hardware beneath, which is shared among all the other machines.

24. This type of server acts as an intermediary between a client and a server. Often used to isolate either the clients or servers for security purposes, this server

takes the request from the client.

25. This specifies the unique number assigned to the network and it also identifies the class of the network.