Multiple Choice Questions On Computer Networks - Set 4

Following are the Multiple choice questions on Computer Networks based on the UGC - NET Syllabus 

1) The area of coverage of satellite radio beam is known as... ?

1. Footprint
2. Circular polarization
3. Beam width
4. Identity
5. None of Above

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Answer = A 
Explanation:No explanation for this question.

2) Coaxial cable has conductors with ?

1. Equal resistance
2. The same diameter
3. Both A and B
4. A common axis
5. None of these

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Answer = D 
Explanation: Coaxial cables has two type of conductors one is inner and other is outer that has common axis.

3) What protects the coaxial cable from noise ?

1. Inner conductor
2. Outer conductor
3. Diameter of cable
4. Insulating material

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Answer = B 
Explanation:The outer conductor is covered in protective plastic sheath. This shielding of coaxial cable give it a good combination of high bandwidth and excellent noise immunity.

4) Error detection at the data link level is achieved by ?

1. Bit stuffing
2. Hamming codes
3. Cyclic Redundancy codes
4. Equalization
5. None of above

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Answer = A 
Explanation:Bit stuffing also known as positive justification is the insertion of non-information bits into data.

5) MAN refers to ?

1. Mega Area Network
2. Metropolitan Area Network
3. Mini Area Network
4. Medium Area Network

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Answer = B 
Explanation: A metropolitan area network covers a city. The best example is the cable television network available in cities.

6) Which of the following layer is not in OSI model ?

1. physical layer
2. internet layer
3. network layer
4. transport layer

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Answer =B
Explanation: The OSI model has total 7 layers out of which internet layer is not a part of OSI model.

7) Nyquist Theorem to calculate data rate is ?

1. 2H log₂ V bits/sec
2. H log₂ V bits/sec
3. Hlog₂ (1+S/N)
4. 2H log₂ (1+s/n)

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Answer = A  
Explanation:No explanation

8) Copper wire is an example of ?

1. Guided Transmission Media
2. Unguided Transmission Media
3. Group Media
4. None of these

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Answer = A 
Explanation:Copper wires comes under the Guided Media. Coaxial cables consist of the stiff copper wire as a core.

9) Iridium and Dysprosium projects, proposed by Motorola are related to ?

1. Geosynchronous satellite
2. Wavelength
3. Low orbit satellite
4. ISDN

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Answer = C 
Explanation:Moving down in altitude, we come to LEO satellites. Due to their rapid motion, large numbers of them are needed for a complete system.

10) Which of the following is a type of fragmentation ?

1. Transparent
2. Non transparent
3. Both A and B
4. None of these

Show/Hide Answer

Answer = C 
Explanation:Fragmentation is used to break up the packets into fragments. It is of two types : Transparent and Non transparent.

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