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Concept of layering.OSI and TCP/IP Protocol Stacks; Basics of packet, circuit and virtual circuit-switching; Data link layer: framing, error detection, Medium Access Control, Ethernet bridging; Routing protocols: shortest path, flooding, distance vector and link state routing; Fragmentation and IP addressing, IPv4, CIDR notation, Basics of IP support protocols (ARP, DHCP, ICMP), Network Address Translation (NAT); Transport layer: flow control and congestion control, UDP, TCP, sockets; Application layer protocols: DNS, SMTP, HTTP, FTP, Email.

.$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}& \textbf{2022} & \textbf{2021-1}&\textbf{2021-2}&\textbf{2020}&\textbf{2019}&\textbf{2018}&\textbf{2017-1}&\textbf{2017-2}&\textbf{2016-1}&\textbf{2016-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count} & 2 &1&1&2&1&3&2&3&2&3&1&2&3
\\\hline\textbf{2 Marks Count} & 4 &4&3&2&4&2&3&1&4&3&1&3&4
\\\hline\textbf{Total Marks} & 10 &9&7&6&9&7&8&5&10&9&\bf{5}&\bf{8}&\bf{10}\\\hline
\end{array}}}$$

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Recent questions in Computer Networks

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4221
Contention
What is difference between contention and contentionless protocol
What is difference between contention and contentionless protocol
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4222
Contention
What is difference between contention and contentionless protocol
What is difference between contention and contentionless protocol
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1 votes
1 answer
4223
Cidr
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1 votes
2 answers
4224
Slow start
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5 votes
2 answers
4225
In SWP if first packet is transmitted on link, will it wait for window size to fill completely or start propagating?
In SWP, if windows size of the sender is 5, transmission delay is 15ms and propagation delay is 25ms.So,if first packet is transmitted on link, will it wait for the windo...
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0 votes
1 answer
4226
Stop n wait
A channel has propagation delay of 10 ms .For 320 bits frame what will be channel bit rate if stop -n-wait give efficiency of 50%? I have solved this using 2 approaches but getting different answers(as in the picture). Can anyone plz explain where i am wrong?
A channel has propagation delay of 10 ms .For 320 bits frame what will be channel bit rate if stop -n-wait give efficiency of 50%?I have solved this using 2 approaches bu...
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2 votes
1 answer
4227
Selective repeat
A computer uses the following sequence numbers:0,1,2,3,4,5,6,7,0,1,2,3,... What will be sender's and receiver's window size that are not possible in SR protocol? a )4,4 b)5,3 c)7,1 d)5,4
A computer uses the following sequence numbers:0,1,2,3,4,5,6,7,0,1,2,3,...What will be sender's and receiver's window size that are not possible in SR protocol?a )4,4 b)5...
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1 votes
0 answers
4234
Synchronous bits
Can Any Body Explain ?
Can Any Body Explain ?
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0 votes
0 answers
4235
Time division multiplexing
A link carries data from n connections. In TDM, the data rate of link is _______ time faster and uni-duration is ________________ time shorter than a single link connection. a)n,n b)(n+1),(n+1) c)n, n+1 d)(n+1),n Please explain
A link carries data from n connections. In TDM, the data rate of link is _______ time faster and uni-duration is ________________ time shorter than a single link connecti...
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4236
manchester encoding
Which of following options is not an useful property of manchester line code for ethernet a)continuous energy b)continuous clock transition c)no dc component d)no signal change at 1 to 0 transition
Which of following options is not an useful property of manchester line code for etherneta)continuous energyb)continuous clock transitionc)no dc componentd)no signal chan...
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4 votes
3 answers
4237
What is the effect on line utilization, if we increase the number of frames for a constant message size?
a) lower line efficiencyb) higher line efficiencyc) no change in line efficiencyd) no relation between line efficiency and frame size
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1 votes
1 answer
4238
backoff
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0 votes
1 answer
4239
TTL
Which of the following is the purpose of TTL field in DNS record? 1) If a record is lost during transmission , it will not circulate endlessly 2) Cached copies of the record will expires automatically 3) Redundant servers can trace the record back to it's creation time so that it can be validated 4) None of these
Which of the following is the purpose of TTL field in DNS record?1) If a record is lost during transmission , it will not circulate endlessly2) Cached copies of the recor...
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0 votes
2 answers
4240
congestion window
Let the size of congestion window of a TCP connection be 32 KB. When the timeout occurs maximum segment size used is 2 KB. If the time taken by TCP connection to get 32 KB congestion window is 480 msec then the RTT of connection is _________ (in msec).
Let the size of congestion window of a TCP connection be 32 KB. When the timeout occurs maximum segment size used is 2 KB. If the time taken by TCP connection to get 32 K...
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