1. |
When collection of various computers seems a single coherent system to its client, then it is called |
A. | computer network |
B. | distributed system |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» B. distributed system |
2. |
Two devices are in network if |
A. | a process in one device is able to exchange information with a process in another device |
B. | a process is running on both devices |
C. | pids of the processes running of different devices are same |
D. | none of the mentioned |
Answer» A. a process in one device is able to exchange information with a process in another device |
3. |
Which one of the following computer network is built on the top of another network? |
A. | prior network |
B. | chief network |
C. | prime network |
D. | overlay network |
Answer» D. overlay network |
4. |
In computer network nodes are |
A. | the computer that originates the data |
B. | the computer that routes the data |
C. | the computer that terminates the data |
D. | all of the mentioned |
Answer» D. all of the mentioned |
5. |
Communication channel is shared by all the machines on the network in |
A. | broadcast network |
B. | unicast network |
C. | multicast network |
D. | none of the mentioned |
Answer» A. broadcast network |
6. |
Bluetooth is an example of |
A. | personal area network |
B. | local area network |
C. | virtual private network |
D. | none of the mentioned |
Answer» A. personal area network |
7. |
A _____ is a device that forwards packets between networks by processing the routing information included in the packet. |
A. | bridge |
B. | firewall |
C. | router |
D. | all of the mentioned |
Answer» C. router |
8. |
A list of protocols used by a system, one protocol per layer, is called |
A. | protocol architecture |
B. | protocol stack |
C. | protocol suit |
D. | none of the mentioned |
Answer» B. protocol stack |
9. |
Network congestion occurs |
A. | in case of traffic overloading |
B. | when a system terminates |
C. | when connection between two nodes terminates |
D. | none of the mentioned |
Answer» A. in case of traffic overloading |
10. |
Which one of the following extends a private network across public networks? |
A. | local area network |
B. | virtual private network |
C. | enterprise private network |
D. | storage area network |
Answer» B. virtual private network |
11. |
OSI stands for |
A. | open system interconnection |
B. | operating system interface |
C. | optical service implementation |
D. | none of the mentioned |
Answer»
A. open system interconnection
view more info and meaning of OSI |
12. |
The OSI model has ___ layers. |
A. | 4 |
B. | 5 |
C. | 6 |
D. | 7 |
Answer» D. 7 |
13. |
TCP/IP model does not have ______ layer but OSI model have this layer. |
A. | session layer |
B. | presentation layer |
C. | application layer |
D. | both (a) and (b) |
Answer» D. both (a) and (b) |
14. |
Which layer links the network support layers and user support layers |
A. | session layer |
B. | data link layer |
C. | transport layer |
D. | network layer |
Answer» C. transport layer |
15. |
Which address is used in an internet employing the TCP/IP protocols? |
A. | physical address and logical address |
B. | port address |
C. | specific address |
D. | all of the mentioned |
Answer» D. all of the mentioned |
16. |
TCP/IP model was developed _____ the OSI model. |
A. | prior to |
B. | after |
C. | simultaneous to |
D. | none of the mentioned |
Answer» A. prior to |
17. |
Which layer is responsible for process to process delivery? |
A. | network layer |
B. | transport layer |
C. | session layer |
D. | data link layer |
Answer» B. transport layer |
18. |
Which address identifies a process on a host? |
A. | physical address |
B. | logical address |
C. | port address |
D. | specific address |
Answer» C. port address |
19. |
Which layer provides the services to user? |
A. | application layer |
B. | session layer |
C. | presentation layer |
D. | none of the mentioned |
Answer» A. application layer |
20. |
Transmission data rate is decided by |
A. | network layer |
B. | physical layer |
C. | data link layer |
D. | transport layer |
Answer» B. physical layer |
21. |
Which transmission media has the highest transmission speed in a network? |
A. | coaxial cable |
B. | twisted pair cable |
C. | optical fiber |
D. | electrical cable |
Answer» C. optical fiber |
22. |
Bits can be send over guided and unguided media as analog signal by |
A. | digital modulation |
B. | amplitude modulation |
C. | frequency modulation |
D. | phase modulation |
Answer» A. digital modulation |
23. |
The portion of physical layer that interfaces with the media access control sublayer is called |
A. | physical signalling sublayer |
B. | physical data sublayer |
C. | physical address sublayer |
D. | none of the mentioned |
Answer» A. physical signalling sublayer |
24. |
physical layer provides |
A. | mechanical specifications of electrical connectors and cables |
B. | electrical specification of transmission line signal level |
C. | specification for ir over optical fiber |
D. | all of the mentioned |
Answer» D. all of the mentioned |
25. |
In asynchronous serial communication the physical layer provides |
A. | start and stop signalling |
B. | flow control |
C. | both (a) and (b) |
D. | none of the mentioned |
Answer» C. both (a) and (b) |
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