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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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Highest voted questions in Computer Networks

27 votes
5 answers
151
GATE CSE 2016 Set 2 | Question: 23
Anarkali digitally signs a message and sends it to Salim. Verification of the signature by Salim requires. Anarkali's public key. Salim's public key. Salim's private key. Anarkali's private key.
Anarkali digitally signs a message and sends it to Salim. Verification of the signature by Salim requires.Anarkali's public key.Salim's public key.Salim's private key.Ana...
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27 votes
3 answers
154
GATE IT 2005 | Question: 78
Consider the following message $M = 1010001101$. The cyclic redundancy check (CRC) for this message using the divisor polynomial $x^5+x^4+x^2+1$ is : $01110$ $01011$ $10101$ $10110$
Consider the following message $M = 1010001101$. The cyclic redundancy check (CRC) for this message using the divisor polynomial $x^5+x^4+x^2+1$ is :$01110$$01011$$10101$...
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27 votes
5 answers
155
GATE CSE 2005 | Question: 27
An organization has a class $B$ network and wishes to form subnets for $64$ departments. The subnet mask would be: $255.255.0.0$ $255.255.64.0$ $255.255.128.0$ $255.255.252.0$
An organization has a class $B$ network and wishes to form subnets for $64$ departments. The subnet mask would be:$255.255.0.0$$255.255.64.0$$255.255.128.0$$255.255.252.0...
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27 votes
4 answers
156
GATE CSE 2007 | Question: 70
Match the following: ... $\text{P - 1, Q - 4, R - 2, S - 5}$ $\text{P - 2, Q - 4, R - 1, S - 3}$
Match the following:$$\begin{array}{llll} \text{(P)} & \text{SMTP} &(1)& \text{Application layer} \\ \text{(Q)} & \text{BGP}& (2) & \text{Transport layer} \\ \text{(R)}...
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27 votes
4 answers
157
GATE CSE 2007 | Question: 68, ISRO2016-73
The message $11001001$ is to be transmitted using the CRC polynomial $x^3 +1$ to protect it from errors. The message that should be transmitted is: $11001001000$ $11001001011$ $11001010$ $110010010011$
The message $11001001$ is to be transmitted using the CRC polynomial $x^3 +1$ to protect it from errors. The message that should be transmitted is:$11001001000$$110010010...
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26 votes
6 answers
158
GATE CSE 2019 | Question: 49
Consider that $15$ machines need to be connected in a LAN using $8$-port Ethernet switches. Assume that these switches do not have any separate uplink ports. The minimum number of switches needed is ______
Consider that $15$ machines need to be connected in a LAN using $8$-port Ethernet switches. Assume that these switches do not have any separate uplink ports. The minimum ...
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26 votes
5 answers
159
GATE CSE 2015 Set 2 | Question: 41
Consider the following routing table at an IP router: ... $\text{i-b, ii-c, iii-d, iv-e}$ $\text{i-b, ii-c, iii-e, iv-d}$
Consider the following routing table at an IP router:$$\begin{array}{|l|l|l|} \hline \textbf {Network No} & \textbf {Net Mask} & \textbf{Next Hop} \\\hline \text {128.96...
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26 votes
3 answers
160
GATE IT 2004 | Question: 80
In a data link protocol, the frame delimiter flag is given by $0111$. Assuming that bit stuffing is employed, the transmitter sends the data sequence $01110110$ as $01101011$ $011010110$ $011101100$ $0110101100$
In a data link protocol, the frame delimiter flag is given by $0111$. Assuming that bit stuffing is employed, the transmitter sends the data sequence $01110110$ as$011010...
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26 votes
7 answers
161
GATE IT 2004 | Question: 28
In TCP, a unique sequence number is assigned to each byte word segment message
In TCP, a unique sequence number is assigned to eachbytewordsegmentmessage
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26 votes
2 answers
163
GATE CSE 2008 | Question: 57
If a class $B$ network on the Internet has a subnet mask of $255.255.248.0$, what is the maximum number of hosts per subnet? $1022$ $1023$ $2046$ $2047$
If a class $B$ network on the Internet has a subnet mask of $255.255.248.0$, what is the maximum number of hosts per subnet?$1022$$1023$$2046$$2047$
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26 votes
4 answers
164
GATE CSE 2008 | Question: 56
In the slow start phase of the TCP congestion algorithm, the size of the congestion window: does not increase increase linearly increases quadratically increases exponentially
In the slow start phase of the TCP congestion algorithm, the size of the congestion window:does not increaseincrease linearlyincreases quadraticallyincreases exponentiall...
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25 votes
5 answers
167
GATE CSE 1995 | Question: 1.12
What is the distance of the following code $000000$, $010101$, $000111$, $011001$, $111111$? $2$ $3$ $4$ $1$
What is the distance of the following code $000000$, $010101$, $000111$, $011001$, $111111$?$2$$3$$4$$1$
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25 votes
8 answers
168
GATE CSE 2005 | Question: 25
The maximum window size for data transmission using the selective reject protocol with $n\text{-bit}$ frame sequence numbers is: $2^n$ $2^{n-1}$ $2^n-1$ $2^{n-2}$
The maximum window size for data transmission using the selective reject protocol with $n\text{-bit}$ frame sequence numbers is:$2^n$$2^{n-1}$$2^n-1$$2^{n-2}$
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24 votes
6 answers
170
GATE IT 2004 | Question: 86
In the TCP/IP protocol suite, which one of the following is NOT part of the IP header? Fragment Offset Source IP address Destination IP address Destination port number
In the TCP/IP protocol suite, which one of the following is NOT part of the IP header?Fragment OffsetSource IP addressDestination IP addressDestination port number
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