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GATE CSE

TCP UDP Sockets and Congestion Control

Computer Networks

Previous Years Questions

Marks 1

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Consider the data transfer using TCP over a 1 Gbps link. Assuming that the maximum segment lifetime (MSL) is set to 60 s...
GATE CSE 2022
Consider a 100 Mbps link between an earth station (sender) and a satellite (receiver) at an altitude of 2100 km. The sig...
GATE CSE 2022
Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?
GATE CSE 2019
Consider a long-lived $$TCP$$ session with an end-to-end bandwidth of $$1$$ $$Gbps$$ ($$ = {10^9}\,$$ bits-persecond). T...
GATE CSE 2018
Consider the following statements. I. TCP connections are full duplex II. TCP has no option for selective acknowledgme...
GATE CSE 2015 Set 3
Identify the correct order in which a server process must invoke the function calls accept, bind, listen, and recv accor...
GATE CSE 2015 Set 2
Suppose two hosts use a TCP connection to transfer a large file. Which of the following statements is/are FALSE with res...
GATE CSE 2015 Set 1
Which one of the following socket API functions converts an unconnected active TCP socket into a passive socket?
GATE CSE 2014 Set 2
The transport layer protocols used for real time multimedia, file transfer, DNS and email, respectively are
GATE CSE 2013
Which of the following transport layer protocols is used to support electronic mail?
GATE CSE 2012
Which of the following system calls results in the sending of SYN packets?
GATE CSE 2008
What is the maximum size of data that the application layer can pass on to the TCP layer below?
GATE CSE 2008
Packets of the same session may be routed through different paths in
GATE CSE 2005
Which of the following functionalities must be implemented by a transport protocol over and above the network protocol?
GATE CSE 2003

Marks 2

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A TCP server application is programmed to listen on port number P on host S. A TCP client connected to the TCP server ov...
GATE CSE 2021 Set 1
Consider the sliding window flow-control protocol operating between a sender and a receiver over a full-duplex error-fre...
GATE CSE 2021 Set 1
Consider two hosts P and Q connected through a router R. The maximum transfer unit (MTU) value of the link between P and...
GATE CSE 2021 Set 1
Consider a TCP connection between a client and a server with the following specifications: the round trip time is 6 ms, ...
GATE CSE 2020
Consider an $$IP$$ packet with a length of $$4,500$$ bytes that includes a $$20$$-byte $$IPv$$$$4$$ header and a $$40$$-...
GATE CSE 2018
Consider the following statements regarding the slow start phase of the $$TCP$$ congestion control algorithm. Note that ...
GATE CSE 2018
Match the following .tg {border-collapse:collapse;border-spacing:0;border-color:#999;} .tg td{font-family:Arial, sans...
GATE CSE 2018
For a host machine that uses the token bucket algorithm for congestion control, the token bucket has a capacity of 1 meg...
GATE CSE 2016 Set 1
Assume that the bandwidth for a TCP connection is 1048560 bits/sec. Let $$\alpha $$ be the value of RTT in milliseconds(...
GATE CSE 2015 Set 2
Let the size of congestion window of a TCP connection be 32 KB when a timeout occurs. The round trip time of the connect...
GATE CSE 2014 Set 1
Consider an instance of TCP’s Additive Increase Multiplicative Decrease (AIMD) algorithm where the window size at the st...
GATE CSE 2012
While opening a TCP connection, the initial sequence number is to be derived using a time-of-day (ToD) clock that keeps ...
GATE CSE 2009
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 in...
GATE CSE 2008
In the slow start phase of the TCP congestion control algorithm, the size of the congestion window
GATE CSE 2008
A client process P needs to make a TCP connection to a server process S. Consider the following situation: the server pr...
GATE CSE 2008
Suppose that the maximum transmit window size for a TCP connection is 12000 bytes. Each packet consists of 2000 bytes. A...
GATE CSE 2004
A TCP message consisting of 2100 bytes is passed to IP for delivery across two networks. The first network can carry a m...
GATE CSE 2004
Consider three IP networks A, B and C. Host HA in networks A sends messages each containing 180 bytes of application dat...
GATE CSE 2004
Consider three IP networks A, B and C. Host HA in networks A sends messages each containing 180 bytes of application dat...
GATE CSE 2004

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