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1

GATE CSE 2015 Set 2

MCQ (Single Correct Answer)
Identify the correct order in which a server process must invoke the function calls accept, bind, listen, and recv according to UNIX socket APL
A
listen, accept, bind recv
B
bind, listen, accept, recv
C
bind, accept, listen, recv
D
accept, listen, bind recv
2

GATE CSE 2015 Set 2

MCQ (Single Correct Answer)
Assume that the bandwidth for a TCP connection is 1048560 bits/sec. Let $$\alpha $$ be the value of RTT in milliseconds(rounded off to the nearest integer) after which the TCP window scale option is needed. Let $$\beta $$ be the maximum possible window size the window scale option. Then the values of $$\alpha $$ and $$\beta $$ are
A
63 milliseconds, $$65535 \times {2^{14}}$$
B
63 milliseconds, $$65535 \times {2^{16}}$$
C
500 milliseconds, $$65535 \times {2^{14}}$$
D
63 milliseconds, $$65535 \times {2^{16}}$$
3

GATE CSE 2015 Set 2

Numerical
Assume that for a certain processor, a read request takes $$50$$ nanoseconds on a cache miss and $$5$$ nanoseconds on a cache hit. Suppose while running a program, it was observed that $$80\% $$ of the processor's read requests result in a cache hit. The average read access time in nanoseconds is __________.
Your Input ________

Answer

Correct Answer is 14
4

GATE CSE 2015 Set 2

Numerical
Consider a typical disk that rotates at $$15000$$ rotations per minute $$(RPM)$$ and has a transfer rate of $$50 \times {10^6}\,\,\,bytes/\sec .$$ If the average seek time of the disk is twice the average rotational delay and the controller’s transfer time is $$10$$ times the disk transfer time, the average time (in milliseconds) to read or write a $$512$$-byte sector of the disk is ______________________.
Your Input ________

Answer

Correct answer is between 6.1 and 6.2

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