1. Two devices are in network if ?

Answer. a process in one device is able to exchange information with a process in another device

2. Which computer networks is built on the top of another network?

Answer. overlay network

3. In computer network nodes are ?

Answer.
• the computer that originates the data
• the computer that routes the data
• the computer that terminates the data

4. Communication channel is shared by all the machines on the network in ?

Answer. broadcast network

5. Bluetooth is an example of

Answer. personal area network

6. A device that forwards packets between networks by processing the routing information included in the packet ?

Answer. router

8. CRC stands for

Answer. cyclic redundancy check

9. Which is a data link protocol?

Answer.
• ethernet
• point to point protocol
• hdlc

10. Which is the multiple access protocol for channel access control?

Answer. Both CSMA/CD & CSMA/CA

11. The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called

Answer. piggybacking

12. The network layer is concerned with of data.

Answer. packets

13. Which is not a function of network layer?

Answer. error control