Computer Data Communication Online Test

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Question 1

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

Answer

None of the above

Question 2

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

Answer

A repeater

Question 3

3. A LAN is a combination of ?

Answer

Network adapter cards

Answer

All of above

Answer

LAN cables

Answer

LAN application software

Question 4

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

Question 5

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

Question 6

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

Answer

More difficult to reconfigure than other topologies

Answer

Needs significantly less cabling than other topologies

Answer

Centralized monitoring and management

Answer

Breaks in a single cable segment takes down entire network

Question 7

7. Token passing prevents data collisions by ?

Answer

Using zones to control network traffic congestion

Answer

Allowing only one computer at a time to use the token

Answer

Using code to steer tokens around each other

Answer

Having multiple token take alternate routes

Question 8

8. What best describes a bus topology network ?

Answer

The number of computers on the network does not effect performance

Answer

Easier to troubleshoot than other topologies

Answer

Media is inexpensive and easy to work with

Answer

Needs significantly more cabling than other topologies

Question 9

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

Answer

Packet Processor

Question 10

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

Answer

Electrical Problems

Answer

Physical Problems

Answer

Newsgroup Problems

Question 11

11. People on a LAN can share ?

Answer

CD/ROM disk drive

Answer

Fax Machine

Answer

All of above

Question 12

12. Who invented the modem ?

Answer

Apple computers Inc

Answer

AT & T Information System, USA

Question 13

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

Answer

Medium attachment unit

Answer

Terminator

Answer

Barrel connector

Answer

Network adapter card

Question 14

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

Answer

Presentation

Question 15

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

Answer

Windows NT Workstation

Question 16

16. 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

Network Adapter Card

Answer

Modem Card

Answer

DVD (Digital Versatile Disk)

Question 17

17. A driver is ?

Answer

A peripheral device

Question 18

18. What does the acronym ISDN stand for ?

Answer

Integrated Service Digital Network

Answer

Interactive Service Digital Network

Answer

Intelligent Service Digital Network

Answer

International Service Data Network

Question 19

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

Answer

Network and data Link layers

Answer

Application and Presentation layers

Answer

Transport and Network layers

Answer

Physical and Data Link Layers

Question 20

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

Question 21

21. FDDI is a ?

Answer

Mesh Network

Answer

Bus Network

Answer

Star Network

Answer

Ring Network

Question 22

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

Answer

Token Passing

Question 23

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

Answer

Demodulation

Answer

Modulation

Answer

Line switching

Answer

Telecommuting

Question 24

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

Answer

Data Encryption

Answer

Data Processing

Answer

Data Communication

Answer

Data Distribution

Question 25

25. Which of the following topologies is passive ?

Answer

Star topology

Answer

Hybrid topology

Answer

Bus topology

Answer

Ring topology

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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