Computer Data Communication Online Test

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Question 1

1. The media Access Control sublayer resides in which OSI layer ?

Question 2

2. A LAN is a combination of ?

Answer

All of above

Answer

LAN cables

Answer

LAN application software

Answer

Network adapter cards

Question 3

3. What layer of the OSI model does data compression ?

Answer

Presentation

Question 4

4. The process of converting form analog to digital is called ?

Answer

Modulation

Answer

Telecommuting

Answer

Demodulation

Answer

Line switching

Question 5

5. Now-a-day computers all over the world can talk to each other. Which is one of the special accessories essential for this purpose ?

Answer

Modem Card

Answer

DVD (Digital Versatile Disk)

Answer

Network Adapter Card

Question 6

6. Cabling on a liner bus topology can be extended using which of the following ?

Answer

Medium attachment unit

Answer

Barrel connector

Answer

Network adapter card

Answer

Terminator

Question 7

7. A driver is ?

Answer

A peripheral device

Question 8

8. What best describes a bus topology network ?

Answer

Needs significantly more cabling than other topologies

Answer

Media is inexpensive and easy to work with

Answer

Easier to troubleshoot than other topologies

Answer

The number of computers on the network does not effect performance

Question 9

9. Logical security for on-time system is achieved primarily by _____ and authorization codes ?

Answer

None of the above

Question 10

10. Which of the following statements best describes a star topology ?

Answer

Centralized monitoring and management

Answer

Needs significantly less cabling than other topologies

Answer

More difficult to reconfigure than other topologies

Answer

Breaks in a single cable segment takes down entire network

Question 11

11. FDDI is a ?

Answer

Star Network

Answer

Bus Network

Answer

Ring Network

Answer

Mesh Network

Question 12

12. What does the acronym ISDN stand for ?

Answer

Integrated Service Digital Network

Answer

Interactive Service Digital Network

Answer

International Service Data Network

Answer

Intelligent Service Digital Network

Question 13

13. Project 802 defines standards for which layers of the OSI model ?

Answer

Physical and Data Link Layers

Answer

Network and data Link layers

Answer

Application and Presentation layers

Answer

Transport and Network layers

Question 14

14. Who invented the modem ?

Answer

AT & T Information System, USA

Answer

Apple computers Inc

Question 15

15. Which of the following access methods listens to the cable for network traffic before sending data ?

Answer

Token Passing

Question 16

16. A network of geographically distant computers and terminals is called a ?

Question 17

17. Token passing prevents data collisions by ?

Answer

Allowing only one computer at a time to use the token

Answer

Using zones to control network traffic congestion

Answer

Having multiple token take alternate routes

Answer

Using code to steer tokens around each other

Question 18

18. What enables a computer to work with a printer ?

Answer

Packet Processor

Question 19

19. Which of the following topologies is passive ?

Answer

Bus topology

Answer

Star topology

Answer

Hybrid topology

Answer

Ring topology

Question 20

20. How many pairs of computers can simultaneously communicate on Ethernet LAN ?

Question 21

21. Which of the following is not a category of network problems ?

Answer

Electrical Problems

Answer

Newsgroup Problems

Answer

Physical Problems

Question 22

22. which of the following does not provide a graphical interface ?

Answer

Windows NT Workstation

Question 23

23. The transfer of encoded information form one location to another by a communication channel is called ?

Answer

Data Encryption

Answer

Data Communication

Answer

Data Processing

Answer

Data Distribution

Question 24

24. People on a LAN can share ?

Answer

Fax Machine

Answer

All of above

Answer

CD/ROM disk drive

Question 25

25. A device that connects multiple nodes to the network is ?

Answer

A repeater

Question 26

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Total Questions:	25
Time Allowed:	15 Minutes
Total Marks:	25
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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