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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

9 votes
2 answers
241
Madeeasy workbook
An upper layer packet is split into 10 frames, each of which has an 80% chance of arriving undamaged. If no error is done by the data link protocol, how many times must the message be sent on average to get the entire thing through?
An upper layer packet is split into 10 frames, each of which has an 80% chance of arriving undamaged. If no error is done by the data link protocol, how many times must t...
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9 votes
3 answers
243
ISRO2015-51
How many characters per sec $(7 \;\text{bits} + 1 \;\text{parity})$ can be transmitted over a $2400$ bps line if the transfer is synchronous $( 1$ start and $1$ stop bit)? $300$ $240$ $250$ $275$
How many characters per sec $(7 \;\text{bits} + 1 \;\text{parity})$ can be transmitted over a $2400$ bps line if the transfer is synchronous $( 1$ start and $1$ stop bit)...
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9 votes
3 answers
244
ISRO2007-20
If the bandwidth of a signal is $5$ kHz and the lowest frequency is $52$ kHz, what is the highest frequency $5$ kHz $10$ kHz $47$ kHz $57$ kHz
If the bandwidth of a signal is $5$ kHz and the lowest frequency is $52$ kHz, what is the highest frequency$5$ kHz$10$ kHz$47$ kHz$57$ kHz
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9 votes
4 answers
245
ISRO2007-19
Assume that each character code consists of $8$ bits. The number of characters that can be transmitted per second through a synchronous serial line at $2400$ baud rate, and with two stop bits is $109$ $216$ $218$ $219$
Assume that each character code consists of $8$ bits. The number of characters that can be transmitted per second through a synchronous serial line at $2400$ baud rate, a...
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9 votes
5 answers
247
ISRO2015-55
A certain population of ALOHA users manages to generate $70$ request/sec. If the time is slotted in units of $50$ msec, then channel load would be $4.25$ $3.5$ $450$ $350$
A certain population of ALOHA users manages to generate $70$ request/sec. If the time is slotted in units of $50$ msec, then channel load would be$4.25$$3.5$$450$$350$
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9 votes
6 answers
248
ISRO2011-32
In which layer of network architecture, the secured socket layer (SSL) is used? physical layer session layer application layer presentation layer
In which layer of network architecture, the secured socket layer (SSL) is used?physical layersession layerapplication layerpresentation layer
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9 votes
2 answers
250
GATE CSE 1992 | Question: 03,v
Start and stop bits do not contain any "information" but are used in serial communication for Error detection Error correction Synchronization Slowing down the communications.
Start and stop bits do not contain any "information" but are used in serial communication forError detectionError correctionSynchronizationSlowing down the communications...
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9 votes
2 answers
251
GATE CSE 1992 | Question: 02,v
Start and stop bits do not contain any 'information' but are used in serial communication Error detection Error correction Synchronization Slowing down the communications
Start and stop bits do not contain any 'information' but are used in serial communicationError detectionError correctionSynchronizationSlowing down the communications
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8 votes
4 answers
255
GATE CSE 2023 | Question: 55
The forwarding table of a router is shown below. ... to a destination address $200.150 .68 .118$ arrives at the router. It will be forwarded to the interface with $\text{ID}$ __________.
The forwarding table of a router is shown below.$$\begin{array}{|l|l|c|}\hline \textbf{Subnet Number} & \textbf{Subnet Mask} & \textbf{Interface ID} \\\hline 200.150 .0 ....
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8 votes
2 answers
259
ME TESTSERIES
If flooding is used to send packets from A to E, then the total number of packets generated in the above network when hop count for A to E is 3 are ________. ANSWER IS 14 .....BUT THE DOUBT IS THAT IS THEIR ANY EFFECT OF SAYING HOP COUNT FOR A TO E BECZ HERE IN 14 WE COUNTED THE HOP OF LENGTH...
If flooding is used to send packets from A to E, then the total number of packets generated in the above network when hop count for A to E is 3 are ________.ANSWER IS 14 ...
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8 votes
4 answers
260
ISRO2017-30
If there are $n$ devices (nodes) in a network, what is the number of cable links required for a fully connected mesh and a star topology respectively $n(n-1)/2$, $n-1$ $n$, $n-1$ $n-1$, $n$ $n-1$, $n(n -1)/ 2$
If there are $n$ devices (nodes) in a network, what is the number of cable links required for a fully connected mesh and a star topology respectively$n(n-1)/2$, $n-1$$n$,...
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