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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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Most answered questions in Computer Networks

25 votes
8 answers
42
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$$2^{n-2}$
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37 votes
8 answers
43
GATE CSE 2008 | Question: 14, ISRO2016-74
What is the maximum size of data that the application layer can pass on to the TCP layer below? Any size $2^{16}$ bytes - size of TCP header $2^{16}$ bytes $1500$ bytes
What is the maximum size of data that the application layer can pass on to the TCP layer below?Any size$2^{16}$ bytes - size of TCP header$2^{16}$ bytes$1500$ bytes
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35 votes
7 answers
49
GATE CSE 2015 Set 1 | Question: 22
Which of the following fields of an IP header is NOT modified by a typical IP router? Check sum Source address Time to Live (TTL) Length
Which of the following fields of an IP header is NOT modified by a typical IP router?Check sumSource addressTime to Live (TTL)Length
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26 votes
7 answers
52
GATE IT 2004 | Question: 28
In TCP, a unique sequence number is assigned to each byte word segment message
In TCP, a unique sequence number is assigned to eachbytewordsegmentmessage
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39 votes
7 answers
56
GATE IT 2007 | Question: 43
An error correcting code has the following code words: $00000000, 00001111, 01010101, 10101010, 11110000$. What is the maximum number of bit errors that can be corrected? $0$ $1$ $2$ $3$
An error correcting code has the following code words: $00000000, 00001111, 01010101, 10101010, 11110000$. What is the maximum number of bit errors that can be corrected?...
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31 votes
7 answers
58
GATE CSE 1994 | Question: 9
Following $7$ ... that at most $1$ bit could be corrupted). If the message contains an error find the bit which is erroneous and gives correct message.
Following $7$ bit single error correcting hamming coded message is received.$$\overset{7\qquad 6\qquad 5 \qquad 4\qquad 3 \qquad 2 \qquad 1}{\boxed{1 \qquad 0\qquad 0 \qq...
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