Recent questions tagged computer-networks

Recent questions tagged computer-networks

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1

Do we have token ring in Gate Cs 2023 syllabus ?
In Computer networks, do we have token ring in Gate 2023 syllabus

abhinowKatore asked in Computer Networks Apr 24

by abhinowKatore

58 views

0 votes

1 answer

2

What is the BOOTP port number which is stored in relay agent?

kanakjyoti asked in Computer Networks Apr 21

56 views

1 vote

0 answers

3

NIELIT 2022 Jan Scientist B | Section B | Question: 46
A sender uses the Stop-and-Wait $\text{ARQ}$ protocol for reliable transmission of frames. Frames are of size $1000 \; \text{bytes}$ and the transmission rate at the sender is $80 \; \text{Kbps (1 Kbps = 1000 bits/second)}.$ ... $\text{bytes/second}.$ $2500$ $2000$ $1500$ $500$

soujanyareddy13 asked in Others Apr 12

by soujanyareddy13

24 views

0 votes

1 answer

4

Please solve this question
Determine the minimum bandwidth, baud, and bandwidth efficiency for the following bit rates and modulation schemes-BPSK, QPSK, 8-PSK, and 16-PSK.where fb = 2400 bps

wa_tle asked in Computer Networks Mar 7

by wa_tle

80 views

1 vote

1 answer

5

CRT-2022
Kindly help

rsansiya111 asked in Computer Networks Feb 25

88 views

4 votes

3 answers

6

GATE CSE 2022 | Question: 12
Consider an enterprise network with two Ethernet segments, a web server and a firewall, connected via three routers as shown below. What is the number of subnets inside the enterprise network? $3$ $12$ $6$ $8$

Arjun asked in Computer Networks Feb 15

by Arjun

2.8k views

5 votes

2 answers

7

GATE CSE 2022 | Question: 25
Consider the resolution of the domain name $\textsf{www.gate.org.in}$ by a $\text{DNS}$ resolver. Assume that no resource records are cached anywhere across the $\text{DNS}$ servers and that iterative query mechanism is used in the resolution. The number of $\text{DNS}$ query-response pairs involved in completely resolving the domain name is ________________.

Arjun asked in Computer Networks Feb 15

by Arjun

1.9k views

4 votes

4 answers

8

GATE CSE 2022 | Question: 45
Consider routing table of an organization's router shown below: ... of the subnets in the routing table? $12.20.164.0/20$ $12.20.164.0/22$ $12.20.164.0/21$ $12.20.168.0/22$

Arjun asked in Computer Networks Feb 15

by Arjun

2.8k views

5 votes

2 answers

9

GATE CSE 2022 | Question: 47
Consider a network with three routers $\text{P, Q, R}$ shown in the figure below. All the links have cost of unity. The routers exchange distance vector routing information and have converged on the routing tables, after which the link $\text{Q-R}$ ... off to one decimal place) between $\text{P}$ and $\text{Q},$ leading to count-to-infinity problem, is _______________.

Arjun asked in Computer Networks Feb 15

by Arjun

1.6k views

2 votes

2 answers

10

GATE CSE 2022 | Question: 49
Consider a $100 \; \text{Mbps}$ link between an earth station (sender) and a satellite (receiver) at an altitude of $2100 \; \text{km}.$ The signal propagates at a speed of $3 \times 10^{8} \; \text{m/s.}$ ... $1000 \; \text{bytes}$ transmitted by the sender is _______________.

Arjun asked in Computer Networks Feb 15

by Arjun

867 views

0 votes

2 answers

11

GATE CSE 2022 | Question: 50
Consider the data transfer using $\text{TCP}$ over a $1 \; \text{Gbps}$ link. Assuming that the maximum segment lifetime $\text{(MSL)}$ is set to $60 \; \text{seconds},$ the minimum number of bits required for the sequence number field of the $\text{TCP}$ header, to prevent the sequence number space from wrapping around during the $\text{MSL}$ is ________________.

Arjun asked in Computer Networks Feb 15

by Arjun

732 views

0 votes

1 answer

12

CSE EXAM 2022
Kindly Solve it.

rsansiya111 asked in Computer Networks Feb 12

113 views

0 votes

1 answer

13

Applied Test Series: CN
Which of the following options is/are false? If the maximum value sequence number in the GBN is n, then the maximum sender window is n-1. The size of fragments in IPv4 packet fragmentation payload is always divisible by 8 except the last fragment. DF bit is ... IPV4 packet is different. They have provided the ans as 1, 3 and 4. Can someone explain me how option 3 is false?

ramakrushna asked in Computer Networks Jan 25

137 views

0 votes

2 answers

14

Self doubt CN
In the connection termination phase, suppose the FIN segment from the client-side contains data ranging from sequence no 100 to 200, So will the ACK no from the server start from 201 or 202? Will the FIN flag consume 1 extra sequence number at the end, ... context of my question, will that sequence number be 99, before the beginning of the data segment or 201, after the data segment

tusharb asked in Computer Networks Jan 24

240 views

4 votes

1 answer

15

Gate CSE Mock Test Series | Unacademy 2022
A sender uses the stop and wait ARQ protocol for reliable transmission of frames. Frames are of size 100 bytes and the transmission rate at the sender is 20 Kbps. Size of an acknowledgement is 10 bytes and the transmission rate at the receiver is 8 Kbps. The ... data meaning 1msec → $\frac{100}{70}$ Bytes of data hence 1sec → $\frac{10}{7}X1000$ = 1428.57

sharmanikhil610 asked in Computer Networks Jan 23

by sharmanikhil610

219 views

0 votes

1 answer

16

computer networks - queuing delay
Consider the queuing delay in a router buffer (preceding an outbound link). Suppose packet length is L bits and the link rate is R bps, and that N packets arrive to the buffer every LN/R seconds. Find the average queuing delay of the packets.

atulcse asked in Computer Networks Jan 22

480 views

0 votes

2 answers

17

Self doubt CN
Can the header length of IPV4 change at the router? If yes, then why?

tusharb asked in Computer Networks Jan 22

128 views

2 votes

3 answers

18

MADE EASY TEST SERIES | MOCK 2 - 2022
Assume that you have made a request for a web page through your web browser to a web server. Initially the browser cache is empty. Further, the browser is configured to send HTTP requests in PERSISTENT mode. The web page contains text ... very small images. The minimum number of TCP connections required to display the web page completely in your browser is ___.

kbbhatt04 asked in Computer Networks Jan 21

262 views

0 votes

1 answer

19

Made Easy Test Series
The round trip delay between A and B is given as 60 ms, and the bottleneck bandwidth of the link between A and B is 512 KBps. What is the optimal window size (in packets) if the packet size is 64 bytes and the channel is full duplex.

LRU asked in Computer Networks Jan 20

by LRU

141 views

1 vote

1 answer

20

GeeksForGeeks AIM 2 - computer networks
Consider a message with 60000 bits long, that is to be sent from a source to a destination, there are two routers between source to destination. Each of link in the path has bandwidth 1 Mbps, each packet is 1000 bit long, total time taken (in msec) to reach the last bit to the destination, propagation delay is 10 msec ________.

atulcse asked in Computer Networks Jan 15

181 views

0 votes

1 answer

21

MADE EASY TEST SERIES
A network of n computers is such that we have m pairs of computers connected using full duplex wired links: a full duplex link is a direct two-way wired connection between two computers. The wired connectivity of a computer is the number of computers ... could be removed without changing any computer's wired connectivity. I wasn't able to think how to solve this question.HELP.

learner 2102 asked in Computer Networks Jan 5

by learner 2102

143 views

0 votes

1 answer

22

Test Book Test Full Test 7
A message consisting of $2400$ bits is to be passed over the Internet. The message is passed to the transport layer which appends a $150$ - bit header, followed by the network layer which uses a $120$ - bit header. Network layer packets ... network only accepts up to $900$ bits long. The number of bits, including headers delivered to the destination network, is _________.

Nishisahu asked in Computer Networks Jan 2

329 views

0 votes

1 answer

23

Test Series: ACE (Networking)
Never done any problem in concept called purging in networking. can anyone tell me how to approach this. is this in syllabus?

ramakrushna asked in Computer Networks Dec 28, 2021

124 views

1 vote

1 answer

24

Applied Mock Test
How Long it will take if a person clicks on a link to retrieve the HTML file referring to 12 objects. We are using the Non-persistent HTTP connection with 6 parallel TCP connections. Assume the transmission time for any file is 0 ms. The round trip time between the person and the sever is RTT ms.?

LRU asked in Computer Networks Dec 28, 2021

by LRU

161 views

1 vote

2 answers

25

Applied Mock Test
Host A is connected to host B with a 100 Mbps link that has a 200 ms one-way latency and transmission delay of 10 sec. How much data can A send to B before B’s first acknowledgement reaches A?

LRU asked in Computer Networks Dec 28, 2021

by LRU

166 views

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