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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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Previous GATE Questions in Computer Networks

18 votes
3 answers
32
GATE CSE 2021 Set 1 | Question: 29
Assume that a $12$-bit Hamming codeword consisting of $8$-bit data and $4$ check bits is $d_8d_7d_6d_5c_8d_4d_4d_3d_2c_4d_1c_2c_1$ ... $0$ and $y$ is $1$ $x$ is $1$ and $y$ is $0$ $x$ is $1$ and $y$ is $1$
Assume that a $12$-bit Hamming codeword consisting of $8$-bit data and $4$ check bits is $d_8d_7d_6d_5c_8d_4d_4d_3d_2c_4d_1c_2c_1$, where the data bits and the check bits...
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9 votes
4 answers
36
GATE CSE 2020 | Question: 15
Consider the following statements about the functionality of an $\textsf{IP}$ based router. A router does not modify the $\textsf{IP}$ ... packet. Which of the above statements is/are TRUE? I and II only I only II and III only II only
Consider the following statements about the functionality of an $\textsf{IP}$ based router.A router does not modify the $\textsf{IP}$ packets during forwarding.It is not ...
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11 votes
6 answers
40
GATE CSE 2019 | Question: 16
Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)? $\textsf{IMAP, POP3}$ $\textsf{SMTP, POP3}$ $\textsf{SMTP, MIME}$ $\textsf{IMAP, SMTP}$
Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?$\textsf{IMAP, POP3}$$\textsf{SMTP, POP3}$$\textsf{SMTP, MIME}$$\textsf{IMA...
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26 votes
6 answers
43
GATE CSE 2019 | Question: 49
Consider that $15$ machines need to be connected in a LAN using $8$-port Ethernet switches. Assume that these switches do not have any separate uplink ports. The minimum number of switches needed is ______
Consider that $15$ machines need to be connected in a LAN using $8$-port Ethernet switches. Assume that these switches do not have any separate uplink ports. The minimum ...
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23 votes
5 answers
49
GATE CSE 2018 | Question: 13
Match the following: ... $\text{P-IV, Q-I, R-II, S-III}$ $\text{P-IV, Q-I, R-III, S-II}$
Match the following:$$\begin{array}{|l|l|}\hline \textbf{Field} & \textbf{Length in bits} \\\hline \text{P. UDP Header's Port Number} & \text{I. 48} \\ \text{Q. Ethern...
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