PREVIOUS YEAR SOLVED PAPERS - JULY 2016 Paper 2

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26. A multiplexer combines four 100-Kbps channels using a time slot of 2 bits. What is the bit rate?

Answer
Comment
Array

Option : C
Explanation :

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27. In a fully-connected mesh network with 10 computers, total ______ number of cables are required and ______ number of ports are required for each device.

Answer
Comment
Array

Option : C
Explanation :
Since each two host need a cable so n(n-1)/2 cabels needed and n - 1 number of ports are required. i.e. 10(10 - 1) / 2 = 5 * 9 = 45 cables. 9 number of ports are required for each device. So, option (C) is correct.

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28. In TCP/IP Reference model, the job of _______ layer is to permit hosts to inject packets into any network and travel them independently to the destination.
(1)Physical
(2)Transport
(3)Application
(4)Host-to-network

Answer
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Option : D
Explanation :

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29. If there are N people in the world and are using secret key encryption/decryption for privacy purpose, then number of secret keys required will be:

Answer
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Array

Option : C
Explanation :

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30. Optical fiber uses reflection to guide light through a channel, in which angle of incidence is ________ the critical angle.

Answer
Comment
Array

Option : C
Explanation :
Optical fiber uses reflection to guide light through a channel, in which angle of incidence is greater than the critical angle. So, option (C) is correct.

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JULY 2016 Paper 2

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