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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 controlUDPTCP, sockets; Application layer protocols: DNS, SMTP, HTTP, FTPEmail.

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

Recent questions in Computer Networks

23 votes
5 answers
1771
Match the following:$$\begin{array}{|l|l|}\hline \textbf{Field} & \textbf{Length in bits} \\\hline \text{P. UDP Header's Port Number} & \text{I. 48} \\ \text{Q. Ethern...
3 votes
3 answers
1773
Do all the TCP segments travel through same path once the connection is established ?
0 votes
1 answer
1774
Why is MTU (Maximum Transmissible Unit) chosen as 1500 bytes for Internet ? What factors determine MTU size ?
0 votes
2 answers
1775
Even If one fragment of packet is lost....will sender send the whole packet again?
0 votes
1 answer
1777
How will any router know that it's neighbouring router is disconnected from network?
2 votes
1 answer
1778
Why icmp packet is generated only for the first fragment of ip datagram but not for all fragments of ipdatagram
0 votes
1 answer
1779
Four bits are used for packed sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size?$4$$8$$15$$16$Answer given is $1...
2 votes
0 answers
1781
If you are hosting an email service on your server with some domain name with many local nodes, what service is absolutely essential?1.DNS2.SMTP3.DHCP4.IRCMultiple option...
0 votes
0 answers
1782
Why start frame delimiter pattern of frame should not match with the data pattern in frame
0 votes
3 answers
1784
0 votes
1 answer
1785
Offset of 3 rd fragment
1 votes
0 answers
1786
Is sliding window protocol half duplex or full duplex?
0 votes
0 answers
1787
What is the difference between full duplex stop and wait and half duplex stop and wait protocol?
0 votes
0 answers
1789
Will the switch transfers the packet only after receiving all the bits of packet from sender or will it transfer even after receiving a part of the packet
0 votes
0 answers
1790
Question no. 2 ??