ISRO Scientist or Engineer Computer Science 2016

Instructions

For the following questions answer them individually

ISRO Scientist or Engineer Computer Science 2016 - Question 71


In a token ring network, the transmission speed is $$10^{7}$$ bps and the propagation speed is 200 $$\frac{m}{\mu s}$$. Then 1 bit delay in this network is equivalent to

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ISRO Scientist or Engineer Computer Science 2016 - Question 72


The address of a class B hostis to be split into subnets with a 6-bit subnet number. What is the maximum numberof subnets and the maximum numberofhosts in each subnet?

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ISRO Scientist or Engineer Computer Science 2016 - Question 73


The message 11001001is to be transmitted using the CRC polynomial $$x^{3}$$ +1 to protect it from errors. The message that should be transmitted is

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ISRO Scientist or Engineer Computer Science 2016 - Question 74


What is the maximum size of data that application layer can pass on to the TCP layer below?

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ISRO Scientist or Engineer Computer Science 2016 - Question 75


Framesof 1000 bits are sent over a $$10^{6}$$}bps duplex link between two hosts. The propagation time is 25 ms. Frames are to be transmitted into this link to maximally pack them in transit (within the link).What is the minimum numberofbits (i) that will be required to represent the sequence numbers distinctly? Assume that no time gap needs to be given between transmission of two frames.

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ISRO Scientist or Engineer Computer Science 2016 - Question 76


Which of the following is TRUE only for XML, but not for HTML?

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ISRO Scientist or Engineer Computer Science 2016 - Question 77


Consider a system with 2 level caches. Access times of Level 1 cache, Level 2 cache and main memory are 1 ns, 10 ns, and 500 ns, respectively. The hit rates of Level 1 and Level 2 caches are 0.8 and 0.9, respectively. What is the average access time of the system ignoring the search time within the cache?

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ISRO Scientist or Engineer Computer Science 2016 - Question 78


If a class C is derived from class B, which is derived from class A, all through public inheritance, then a class C memberfunction can access

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ISRO Scientist or Engineer Computer Science 2016 - Question 79


Which oneof the following is correct about the statements given below?
I, All function calls are resolved at compile-time in C language.
II. All function calls are resolved at compile-time in C++.

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ISRO Scientist or Engineer Computer Science 2016 - Question 80


When a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called

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