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Wednesday 12 June 2013

PRACTICE PAPER NETWORKING PART-3

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UGC NET JUNE 2013 SYLLABUS, MODEL PAPER/ PREVIOUS YEARS SOLVED QUESTION PAPERS. 

UGC NET (NATIONAL ELIGIBILITY TEST) : OLD SOLVED/PREVIOUS EXAM QUESTION PAPERS WITH SOLUTIONS AND EXPLANATIONS AND FREE STUDY MATERIALS.

COMPUTER MEMORY BASED PREVIOUS YEARS SOLVED PAPERS I, II AND III TO PREPARE AND PASS THE UGC NET/SLET ENTRANCE EXAMINATION WITH HIGH PERCENTAGE.

COMPUTER BASIC QUESTIONS FOR BANK EXAM, HTAT, CTAT, TAT, UGC-NET, INTERVIEW AND OTHER EXAM'S, WHERE BASIC QUESTION'S ARE REQUIRED.

1. Manchester code is a ?

  1. Bi- Polar code
  2. non return to zero code
  3. polar code
  4. B and C
Answer = D

2. How many OSI layers are covered in the X.25 standard ?

  1. three
  2. two
  3. seven
  4. six
  5. None of above
Answer = A

3. The receive equalizer reduce delay distortions using ?

  1. tapped delay lines
  2. gearshift
  3. descrambler
  4. difference engine
  5. None of above
Answer = A

4. In communication satellite, multiple repeaters are known as ?

  1. detector
  2. modulator
  3. stations
  4. transponders
  5. None of above
Answer = D
Explanation: A communications satellite's transponder, is the series of interconnected units which form a communications channel between the receiving and the transmitting antennas.

5. In OSI network architecture, the dialogue control and token management are responsibilities of ?

  1. Session layer
  2. network layer
  3. transport layer
  4. Data link layer
  5. None of above
Answer = A

6. The geostationary satellite used for communication system ?

  1. rotates with earth
  2. remains stationery relative to the earth
  3. is positioned over equator
  4. All of above
Answer = D
Explanation: A geosynchronous satellite is a satellite in geosynchronous orbit, with an orbital period the same as the Earth's rotation period. Such a satellite returns to the same position in the sky after each sidereal day, and over the course of a day traces out a path in the sky that is typically some form of analemma. A special case of geosynchronous satellite is the geostationary satellite, which has a geostationary orbit – a circular geosynchronous orbit directly above the Earth's equator

7. Radio communication frequencies ranges from?

  1. 3 KHz to 300 KHz
  2. 3 KHz to 300 GHz
  3. 300 KHz to 3 GHz
  4. 3 KHz to 3,000 GHz
Answer = B
Explanation: Radio frequency (RF) is a rate of oscillation in the range of about 3 kHz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals.

8. The frequency ranges from 300 KHz to 3 MHz is used for ?

  1. AM radio transmission
  2. TV transmission
  3. FM radio transmission
  4. Microwave communication, satellite and rader
  5. None of above
Answer = A

9. Establishing a virtual connection is functionally equivalent to ?

  1. Connecting as virtual memory
  2. Physically connecting a DTE and DCE
  3. Placing a telephone call prior to a conversation
  4. Placing a modem prior to a conversation
  5. None of above
Answer = C

10. Which of the following is a function of e-mail system ?

  1. Composition
  2. Transfer
  3. Reporting
  4. All of above
Answer = D

11. Which of the following is a congestion control algorithm?
The leaky bucket
Token bucket
Resource Respondez sil vous plait protocol
All of above

Answer = D

12. Which of the following is a function of e-mail system ?

  1. Mosaic
  2. Netscape
  3. Internet Explorer
  4. All of above
Answer = D

13. Demodulation is the process of ?

  1. converting digital signals to analog signals
  2. converting analog signals to digital signals
  3. dividing the high-speed signals into frequency bands
  4. combining many low speed signals into one high speed channel
  5. None of above
Answer = B

14. Bulletin board system ?

  1. is a public access message system
  2. converts digital signals to analog signals
  3. is a modem capable of accepting commands
  4. converts digital signals to analog signals
  5. None of above
Answer = A

15. An information utility can offer a user ?

  1. instant bonds and stock quotations
  2. news stories from wire services
  3. Complete airline schedules for all domestic flights
  4. All of above
  5. None of above
Answer = D

16. A network that requires human intervention of route signals is called a ?

  1. bus network
  2. ring network
  3. star network
  4. T- switched network
  5. None of above
Answer = D

17. In OSI network architecture, the dialogue control and token management are responsibilities of ?

  1. session layer
  2. network layer
  3. transport layer
  4. data link layer
  5. none of above
Answer = A

18. What is the main function of transport layer ?

  1. node to node delivery
  2. process to process message delivery
  3. synchronization
  4. updating and maintenance of routing tables
Answer = B

19. Which of the following is an important characteristics of LAN ?

  1. application independent interface
  2. low cost access for low bandwidth channels
  3. unlimited expansion
  4. parallel transmission
  5. None of above
Answer = A

20. To deliver a message to the correct application program running on a host, the .... address must be consulted ?

  1. port
  2. physical
  3. IP
  4. None
Answer = A 

GOTO NETWORKING PART-2 
IF YOU FIND ANY ANSWER WRONG,COMMENT ME, SO THAT I RIGHT THAT ANSWER


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