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1

GATE CSE 2008

MCQ (Single Correct Answer)
A computer on a 10 Mbps network is regulated by a token bucket. The token bucket is filled at a rate of 2 Mbps. It is initially filled to capacity with 16 Megabits. What is the maximum duration for which the computer can transmit at the full 10 Mbps?
A
1.6 seconds
B
2 seconds
C
5 seconds
D
8 seconds
2

GATE CSE 2008

MCQ (Single Correct Answer)
A client process P needs to make a TCP connection to a server process S. Consider the following situation: the server process S executes a socket( ), a bind( ) and a listen( ) system call in that order, following which it is preempted. Subsequently, the client process P executes a socket( ) system call followed by connect( ) system call to connect to the server process S. The server process has not executed any accept( ) system call. Which one of the following events could take place?
A
connect( ) system call returns successfully
B
connect( ) system call blocks
C
connect( ) system call returns an error
D
connect( ) system call results in a core dump
3

GATE CSE 2008

MCQ (Single Correct Answer)
In the slow start phase of the TCP congestion control algorithm, the size of the congestion window
A
does not increase
B
increases linearly
C
increases quadratically
D
increases exponentially
4

GATE CSE 2004

MCQ (Single Correct Answer)
Suppose that the maximum transmit window size for a TCP connection is 12000 bytes. Each packet consists of 2000 bytes. At some point of time, the connection is slow start phase with a current transmit window of 4000 bytes. Subsequently, the transmitter receiver two acknowledgments. Assume that no packet are lost and there are no time-outs. What is the maximum possible value of the current transmit window?
A
4000 bytes
B
8000 bytes
C
10000 bytes
D
12000 bytes

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