BARC CS 2018 Nuclear Quiz -2 (CN)

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Question 1

In a typical mobile phone system with hexagonal cells, it is forbidden to reuse a frequency band in adjacent cells. If 840 frequencies are available, how many can be used in a given cell?

• A280
• B210
• C140
• D120

Question 2

Coaxial cables are categorized by Radio Government rating are adapted for specialized functions. Category RG-59 with impedance 75 used for

• ACable TV
• BEthernet
• CThin Ethernet
• DThick Ethernet

Question 3

Suppose that someone starts with a chain letter. Each person who receives the letter is asked to send it on to 4 other people. Some people do this, while some do not send any letter. How many people have seen the letter, including the first person, if no one receives more than one letter and if the chain letter ends after there have been 100 people who read it but did not send it out? Also find how many people sent out the letter?

• A122 & 22
• B111 & 11
• C133 & 33
• D144 & 44

Question 4

How many distinct stages are there in DES algorithm which is parameterized by a 56-bit key?

• A16
• B17
• C18
• D19

Question 5

Which of the following algorithm is not a broadcast routing algorithm?

• AFlooding
• BMultidimensional Routing
• CReverse Path Forwarding
• DAll of the above

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