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GATE CS : Computer Networks Champion Quiz 3
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Question 1
Packets of the same session may be routed through different paths in
Question 2
One of the header fields in an IP datagram is the Time to Live (TTL) field. Which of the following statements best explains the need for this field?
Question 3
What is the maximum size of data that the application layer can pass on to the TCP layer below?
Question 4
Consider the following TCP connection where only control segment are exchanged.
The TCP follows the same 3-way handshaking procedure as in circuit switching. FIN and SYN have the usual meaning of TCP connections.
What is the possible value X and Y respectively?
The TCP follows the same 3-way handshaking procedure as in circuit switching. FIN and SYN have the usual meaning of TCP connections.
What is the possible value X and Y respectively?
Question 5
Which of the following signals are used for congestion control in the network?
Question 6
Which among the following is incorrect about TCP and UDP?
Question 7
While opening a TCP connection, the initial sequence number is to be derived using a time-of-day (ToD) clock that keeps running even when the host is down. The low order 32 bits of the counter of the ToD clock is to be used for the initial sequence numbers. The clock counters increments once per millisecond. The maximum packet lifetime is given to be 64s.
Which one of the choices given below is closest to the minimum permissible rate at which sequence numbers used for packets of a connection can increase?
Question 8
Consider an instance of TCP’s Additive Increase Multiplicative Decrease (AIMD) algorithm where the window size at the start of the slow start phase is 2 MSS and the threshold at the start of the first transmission is 8 MSS. Assume that a timeout occurs during the fifth transmission. Find the congestion window size at the end of the tenth transmission.
Question 9
In the slow start phase of the TCP congestion control algorithm, the size of the congestion window
Question 10
Let the size of congestion window of a TCP connection be 32 KB when a timeout occurs. The round trip time of the connection is 100 m sec and the maximum segment size used is 2 KB. The time taken (in m sec) by the TCP connection to get back to 32 KB congestion window is _________.
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Jun 25GATE & PSU CS
