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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

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4171
TCP retransmission timer
If TCP round trip time is currently 20 ms and ACK comes in after 30 ms then what is the timeout period for next transmission . Use α=0.9 and β=2
If TCP round trip time is currently 20 ms and ACK comes in after 30 ms then what is the timeout period for next transmission . Use α=0.9 and β=2
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4172
Width of bit in link
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4173
What is the maximum data rate per connection ?
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4174
What are the basics Equations Useful in Computer Network
Propogation Delay Transmission Delay Line Utilisation Link Utilisation RTT RTT = Transmission Time + 2 * Propogation Time ? (or) RTT = 2 * Propogation Time I found the 2d quation used in SWP problems But didn't understand why transmission time is not taken into consideration ?
Propogation DelayTransmission DelayLine UtilisationLink UtilisationRTTRTT = Transmission Time + 2 * Propogation Time ?(or)RTT = 2 * Propogation TimeI found the 2d quation...
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3 votes
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4176
user datagram
The following is a dump header of UDP HEADER in hexadecimal format 5EFA00FD001C3297, what is the total length of user datagram? is a packet form client to server or vice versa?
The following is a dump header of UDP HEADER in hexadecimal format 5EFA00FD001C3297, what is the total length of user datagram? is a packet form client to server or vice...
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2 votes
1 answer
4178
Tcp
Consider a reliable byte stream protocol that use SWP running over 100 Mbps network .Propagation delay is 80 ms and maximum segment lifetime is 80 s a) How many bits are needed for receiver window size in TCP? A) 19 B)20 C)21 D)none B) how many bits we need in sequence field in Tcp header? A) 21 B)28 C)30 D)15
Consider a reliable byte stream protocol that use SWP running over 100 Mbps network .Propagation delay is 80 ms and maximum segment lifetime is 80 s a) How many bits a...
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1 answer
4179
Additive increase multiplicative decrease
consider "additive increase multiplicative decrease".one MSS is 512B.If TCP sender don't perceive path as congested What will be congestion window size after 4RTTs provided congestion window is assigned MSS initially
consider "additive increase multiplicative decrease".one MSS is 512B.If TCP sender don't perceive path as congestedWhat will be congestion window size after 4RTTs provide...
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4180
Tcp
what is timed wait state in tcp
what is timed wait state in tcp
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1 votes
3 answers
4185
TCP & UDP
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0 votes
2 answers
4186
Test Series Question CN
Well Network Layer switch is called Router. This is little confusing.. ( Link layers switch is called bridge :P )
Well Network Layer switch is called Router. This is little confusing.. ( Link layers switch is called bridge :P )
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1 answer
4188
computerNetwork
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1 answer
4189
Frame Size
Suppose the round trip propagation delay for 10Mbps Ethernet has 24.2micro sec The network has 48bit jamming signal then what is minimum frame size in bits
Suppose the round trip propagation delay for 10Mbps Ethernet has 24.2micro sec The network has 48bit jamming signal then what is minimum frame size in bits
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4190
Bandwidth
if delays are recorded as 8 Bit numbers in 50 router network and delay vector are exchanged twice a second how much bandwidth per full duplex line is chewed by distributed routing algorithm. Assume each router has 3 lines to other routers a)400 bps b)800 bps c)1200 now d) none
if delays are recorded as 8 Bit numbers in 50 router network and delay vector are exchanged twice a second how much bandwidth per full duplex line is chewed by distribute...
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