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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

4 votes
2 answers
361
Applied Mock Test 2
In TCP, MSS is 8B. If during the 6th RTT the network is congested and timeout occurs, by using the congestion algorithm, then the threshold value is _________(in Bytes). (assume initial congestion window size for the first transmission is 1 MSS)
In TCP, MSS is 8B. If during the 6th RTT the network is congested and timeout occurs, by using the congestion algorithm, then the threshold value is _________(in Bytes). ...
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0 votes
1 answer
362
#Made easy
Let N stations share 40kbps of pure aloha channel. Frame size is 512 bits which are send at every 40 seconds. The maximum value of N is ____
Let N stations share 40kbps of pure aloha channel. Frame size is 512 bits which are send at every 40 seconds. The maximum value of N is ____
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0 votes
0 answers
363
Computer networking
If the CRC polynomial has degree n then what is the probability of detecting errors greater than n? a) 1/2^(n-1) b) 1/2^(n+1) c) 1/2^n d) 1/2^(n+2)
If the CRC polynomial has degree n then what is the probability of detecting errors greater than n?a) 1/2^(n-1) b) 1/2^(n+1) c) 1/2^n d) 1/2^(n+2)
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0 votes
1 answer
364
Nptel Assignment Question
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2 votes
1 answer
365
Applied Mock Test
What will be the efficiency of the channel in (% )in CSMA/CD when bandwidth is 20 Mbps. The speed of the signal is 4000 Km/s. The frame size is 1000 bits and the length of the cable 200 m.[ Note: round off the final answer in upto one decimal place]
What will be the efficiency of the channel in (% )in CSMA/CD when bandwidth is 20 Mbps. The speed of the signal is 4000 Km/s. The frame size is 1000 bits and the length ...
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0 votes
1 answer
366
made easy
Which of the following is/are correct? Circuit Switching is Store and Forward technique. Packet Switching is faster than Circuit Switching. Packet Switching wastes less resource than Circuit Switching. Packet Switching is not a Store and Forward technique.
Which of the following is/are correct?Circuit Switching is Store and Forward technique.Packet Switching is faster than Circuit Switching.Packet Switching wastes less reso...
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0 votes
0 answers
367
NIELIT STA 2021
The DoS attack, in which the attacker establishes a large number of half-open or fully open TCP connections at the target host is: Vulnerability attack Bandwidth flooding Connection flooding UDP flooding
The DoS attack, in which the attacker establishes a large number of half-open or fully open TCP connections at the target host is: Vulnerability attackBandwidth flooding...
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0 votes
0 answers
368
NIELIT STA 2021
IN DPSK technique, the technique used to encode bits is: AMI Differential code Unipolar RZ format Manchester format
IN DPSK technique, the technique used to encode bits is: AMIDifferential codeUnipolar RZ formatManchester format
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0 votes
0 answers
369
Nptel Assignment Question
Please solve this. I got 24. but it this wrong. Kindly solve this ?
Please solve this. I got 24. but it this wrong. Kindly solve this ?
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0 votes
1 answer
370
Nptel Assignment Question
How long does the receiver wait before it sends a delayed acknowledgement for receiving few more packets. ? RTT 2*RTT 250 ms 500 ms
How long does the receiver wait before it sends a delayed acknowledgement for receiving few more packets. ? RTT2*RTT250 ms500 ms
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0 votes
1 answer
371
ACE academy Test series : Computer networks
At a transmission rate of 20Mbps and propagation speed of 2*10^8m/s. How many meters of the cable is one-bit delay in an Ethernet interface equivalent?
At a transmission rate of 20Mbps and propagation speed of 2*10^8m/s. How many meters of the cable is one-bit delay in an Ethernet interface equivalent?
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0 votes
2 answers
372
Is network security topic in CN part of GATE 2022?
I read the PDF but couldn't find anything mentioned about it. Kindly confirm.
I read the PDF but couldn't find anything mentioned about it. Kindly confirm.
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0 votes
0 answers
373
Forouzan Error Detection and correction Example 10.16
Find the status of the following generators related to two isolated, single-bit errors. a. $x + 1$ b. $x^4+1$ c. $x² + x + 1$ d. $x^{14}+x^{15}+1$
Find the status of the following generators related to two isolated, single-bit errors.a. $x + 1$b. $x^4+1$c. $x² + x + 1$d. $x^{14}+x^{15}+1$
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0 votes
1 answer
374
punjab lect exam
.In which routing algorithm each router exchanges information about the entire network with neighbouring routers at regular intervals a) Link state Routing b) Distance vector C) Form state d) Dalagram link
.In which routing algorithm each router exchanges information about the entire network with neighbouringrouters at regular intervalsa) Link state Routing b) Distance vec...
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0 votes
1 answer
378
Applied Test Series
A router with MTU of 1024 bytes has received an IP packet of size 4240 bytes with an IP header of 20 bytes. The value of MF and offset of the 3rd fragment is ________
A router with MTU of 1024 bytes has received an IP packet of size 4240 bytes with an IP header of 20 bytes. The value of MF and offset of the 3rd fragment is ________
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0 votes
2 answers
379
ARP - computer networks
Is ARP a data link layer protocol or a network layer protocol?
Is ARP a data link layer protocol or a network layer protocol?
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