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Recent questions and answers in Computer Networks
3
votes
2
answers
1
MadeEasy Test Series: Computer Networks - Sliding Window
Consider the GBN protocol with sender and receiver window size as 5.Suppose client sends data 0,1,2,3,4 and only data packet 2 is lost and all ACKs are lost. What will be the content of receiver and sender window. Before Senders ... . Sender: 23456 , Receiver : 01234 C. Sender: 23456 , Receiver : 23456 D. Sender: 01234 , Receiver : 23456
archiii
answered
in
Computer Networks
6 days
ago
by
archiii
3.0k
views
computer-networks
go-back-n
sliding-window
made-easy-test-series
0
votes
4
answers
2
Computer Networks | Network Layer | Subnetting
X Institute has been assigned the Class B network address 165.87.0.0. X needs to divide the network into eight subnets. What subnet mask should be applied to the network to provide the most hosts subnet? (a) 255.255.192.0 (c) 255.255.240.0 (b) 255.255.224.0 (d) 255.255.248.0
Vish_777
answered
in
Computer Networks
Mar 4
by
Vish_777
831
views
computer-networks
zeal-workbook
0
votes
0
answers
3
Computer Networks : Using DBA instead of LBA
Going through the concept of LBA (Limited Broadcasting) and DBA (Directed Broadcast Address), if i consider two cases Case 1 : when host A (10.1.2.3) want to send the packet to all the nodes of a DIFFERENT Network (say 11.0.0.0), in ... 255.255.255) in Case 2, why can't i just use DBA (Directed Broadcasting), making the Destination IP 10.255.255.255 ?
Yashdeep2000
asked
in
Computer Networks
Mar 2
by
Yashdeep2000
86
views
computer-networks
0
votes
2
answers
4
GATE CSE 2024 | Set 1 | Question: 26
Consider a network path $\mathrm{P}-\mathrm{Q}-\mathrm{R}$ between nodes $\mathrm{P}$ and $\mathrm{R}$ via router $\mathrm{Q}$. Node $\mathrm{P}$ sends a file of size $10^6$ bytes to $\text{R}$ via this path by splitting the file into chunks of ... $3$ decimal places) at which $\mathrm{R}$ receives all the chunks of the file? $8.000$ $8.008$ $15.992$ $16.000$
sarthakdarji
answered
in
Computer Networks
Mar 1
by
sarthakdarji
1.7k
views
gatecse2024-set1
computer-networks
55
votes
12
answers
5
GATE CSE 2006 | Question: 44
Station $A$ uses $32\; \text{byte}$ packets to transmit messages to Station $B$ using a sliding window protocol. The round trip delay between A and $B$ is $80\; \text{milliseconds}$ and the bottleneck bandwidth on the path between $A$ and $B$ is $128\; \text{kbps}$ . What is the optimal window size that $A$ should use? $20$ $40$ $160$ $320$
rj2020
answered
in
Computer Networks
Feb 27
by
rj2020
26.5k
views
gatecse-2006
computer-networks
sliding-window
normal
0
votes
0
answers
6
IPv4 Fragmentation
A packet has arrived in which the offset value is 100. Then what's the number of 1st Byte?
mridul_negi
asked
in
Computer Networks
Feb 25
by
mridul_negi
81
views
computer-networks
fragmentation
0
votes
0
answers
7
#cn
Çșȇ ʛấẗẻ
asked
in
Computer Networks
Feb 24
by
Çșȇ ʛấẗẻ
44
views
computer-networks
subnetting
1
vote
1
answer
8
GATE CSE 2024 | Set 2 | Question: 28
Which one of the following $\text{CIDR}$ prefixes exactly represents the range of $\text{IP}$ addresses $10.12 .2 .0$ to $10.12 .3 .255$? $10.12 .2 .0 / 23$ $10.12 .2 .0 / 24$ $10.12 .0 .0 / 22$ $10.12 .2 .0 / 22$
suraj_joshi
answered
in
Computer Networks
Feb 23
by
suraj_joshi
1.6k
views
gatecse2024-set2
computer-networks
0
votes
0
answers
9
Is throughput and link utilization is same. What are the other ways to ask efficiency?
HarshaVardhan1908
asked
in
Computer Networks
Feb 23
by
HarshaVardhan1908
67
views
computer-networks
1
vote
1
answer
10
GATE CSE 2024 | Set 2 | Question: 22
Which of the following fields of an $\text{IP}$ header is/are always modified by any router before it forwards the $\text{IP}$ packet? Source $\text{IP}$ Address Protocol Time to Live $\text{(TTL)}$ Header Checksum
rexritz
answered
in
Computer Networks
Feb 19
by
rexritz
1.5k
views
gatecse2024-set2
computer-networks
multiple-selects
1
vote
0
answers
11
Gate 2024 CSC set 1
TCP client P successfully establishes a connection to TCP server Q. Let Np denote the sequence number in the SYN sent from P to Q. Let No denote the acknowledgement number in the SYN ACK from Q to P. Which of the following statements is/are CORRECT? A. The ... B,C but if the sequence number of syn packet is 65535 then the ack sequence number should be 0 then how B is correct?
DarkRahul
asked
in
Computer Networks
Feb 18
by
DarkRahul
199
views
2
votes
1
answer
12
GATE CSE 2024 | Set 2 | Question: 45
Consider an Ethernet segment with a transmission speed of $10^{8} \mathrm{bits} / \mathrm{sec}$ and a maximum segment length of $500$ meters. If the speed of propagation of the signal in the medium is $2 \times 10^{8} \mathrm{~meters} / \mathrm{sec}$, then the minimum frame size (in bits) required for collision detection is ___________.
Yaman Sahu
answered
in
Computer Networks
Feb 18
by
Yaman Sahu
1.2k
views
gatecse2024-set2
numerical-answers
computer-networks
2
votes
2
answers
13
GATE CSE 2024 | Set 1 | Question: 48
Consider the entries shown below in the forwarding table of an $\text{IP}$ router. Each entry consists of an $\text{IP}$ prefix and the corresponding next hop router for packets whose destination $\text{IP}$ address matches the prefix. The notation " ... and $10.1.1.205$. The number of packets forwarded via the next hop router $\mathrm{R} 2$ is __________.
rexritz
answered
in
Computer Networks
Feb 18
by
rexritz
1.7k
views
gatecse2024-set1
numerical-answers
computer-networks
1
vote
1
answer
14
GATE CSE 2024 | Set 2 | Question: 18
Which of the following statements about $\text{IPv4}$ fragmentation is/are TRUE? The fragmentation of an $\text{IP}$ datagram is performed only at the source of the datagram The fragmentation of an $\text{IP}$ datagram ... of the datagram The reassembly of fragments is performed at all intermediate routers along the path from the source to the destination
Sachin Mittal 1
answered
in
Computer Networks
Feb 18
by
Sachin Mittal 1
2.4k
views
gatecse2024-set2
computer-networks
multiple-selects
1
vote
1
answer
15
GATE CSE 2024 | Set 2 | Question: 44
Consider a $\text{TCP}$ connection operating at a point of time with the congestion window of size $12$ $\text{MSS}$ (Maximum Segment Size), when a timeout occurs due to packet loss. Assuming that all the segments transmitted in the next ... Time) are acknowledged correctly, the congestion window size (in $MSS$) during the third $\text{RTT}$ will be __________.
liontig37
answered
in
Computer Networks
Feb 17
by
liontig37
1.4k
views
gatecse2024-set2
numerical-answers
computer-networks
2
votes
1
answer
16
GATE CSE 2024 | Set 1 | Question: 19
$\mathrm{TCP}$ client $\mathrm{P}$ successfully establishes a connection to $\text{TCP}$ server $\mathrm{Q}$. Let $\text{N}_{P}$ denote the sequence number in the $\text{SYN}$ sent from $\mathrm{P}$ to $\mathrm{Q}$. Let $\text{N}_{Q}$ denote the ... $\text{N}_{P}$ The acknowledgement number $\text{N}_{Q}$ is equal to $\text{N}_{P}+1$
phaniphani
answered
in
Computer Networks
Feb 17
by
phaniphani
1.6k
views
gatecse2024-set1
multiple-selects
computer-networks
tcp
3
votes
2
answers
17
GATE CSE 2024 | Set 1 | Question: 6
A user starts browsing a webpage hosted at a remote server. The browser opens a single TCP connection to fetch the entire webpage from the server. The webpage consists of a top-level index page with multiple embedded image objects. Assume that all caches (e.g., DNS cache, browser cache) are ... $\text{(ii), (iv), (i), (iii)}$ $\text{(iv), (ii), (i), (iii)}$
phaniphani
answered
in
Computer Networks
Feb 17
by
phaniphani
2.3k
views
gatecse2024-set1
computer-networks
2
votes
1
answer
18
GATE CSE 2024 | Set 1 | Question: 21
Which of the following fields is/are modified in the $\text{IP}$ header of a packet going out of a network address translation $\text{(NAT)}$ device from an internal network to an external network? Source $\text{IP}$ Destination $\text{IP}$ Header Checksum Total Length
aniketwaghela
answered
in
Computer Networks
Feb 17
by
aniketwaghela
1.8k
views
gatecse2024-set1
multiple-selects
computer-networks
2
votes
1
answer
19
GATE CSE 2024 | Set 2 | Question: 13
Node $\text{X}$ has a $\text{TCP}$ connection open to node $\text{Y}$. The packets from $\text{X}$ to $\text{Y}$ go through an intermediate $\text{IP}$ router $\mathrm{R}$. Ethernet switch $\mathrm{S}$ is the first switch on the network ... the $\text{MAC}$ address of $\mathrm{S}$ The destination $\text{MAC}$ address is the $\text{MAC}$ address of $\mathrm{Y}$
Deepak Poonia
answered
in
Computer Networks
Feb 17
by
Deepak Poonia
2.9k
views
gatecse2024-set2
computer-networks
multiple-selects
0
votes
1
answer
20
GATE CSE 2024 | Set 1 | Question: 55
Consider sending an $\text{IP}$ datagram of size $1420$ bytes (including $20$ bytes of $\text{IP}$ ... ) has an $\text{MTU}$ size of $360$ bytes. The number of fragments that would be delivered at the receiver is ____________.
aniketwaghela
answered
in
Computer Networks
Feb 17
by
aniketwaghela
2.1k
views
gatecse2024-set1
numerical-answers
computer-networks
0
votes
2
answers
21
sudo gate test series
The bandwidth of a given medium for transferring the data is 100 Mbps. The user starts with pure aloha for transmission after half of the data is transferred user switched to slotted aloha. Then how much throughput will be gain or loss by the user in the second half? A 50% loss B 100% loss 100% gain D 200% gain i am getting 100% tell me what u are getting
nageshhh
answered
in
Computer Networks
Feb 10
by
nageshhh
829
views
computer-networks
throughput
slotted-aloha
pure-aloha
5
votes
1
answer
22
GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 25
A host uses a variety of protocols to discover information about the network it is connected to. Which of the following statements are TRUE? To perform a DNS lookup, a host must first discover the IP address of its local ... another host in the same subnet, a host must first discover the MAC address of the destination host using ARP.
PreyumKr
answered
in
Computer Networks
Feb 8
by
PreyumKr
570
views
goclasses2024-mockgate-14
computer-networks
ip-address
multiple-selects
1-mark
4
votes
2
answers
23
GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 11
Consider the following network, which consists of two routers (R1 and R2), two switches (S1 and S2), and four hosts (H1, H2, H3, and H4). Suppose H1 wants to send packet to H3, which of the following is ... address of R1 Packet leaving R1 will have destination mac address of R2 Packet leaving R2 will have destination mac address of S2
squirrel69
answered
in
Computer Networks
Feb 8
by
squirrel69
564
views
goclasses2024-mockgate-14
computer-networks
packet-switching
multiple-selects
1-mark
4
votes
1
answer
24
GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 38
Consider a sliding window protocol with a window size of $5$ using cumulative ACKs (and ACK is being sent for each segment). Assume that the retransmission timeout timer is long enough and timeout has not occurred for any ... after data packet 5 Data packet 3 was duplicated by the network ACK packet A3 was duplicated by the network
Priyotosh2001
answered
in
Computer Networks
Feb 7
by
Priyotosh2001
380
views
goclasses2024-mockgate-14
computer-networks
tcp
multiple-selects
2-marks
4
votes
1
answer
25
GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 12
Consider the sender's view of the sequence numbers in Go-Back-N protocol. Suppose the first sequence number in the sender's window is $k$, and the last sequence number in the sender's window is $k+3$. Let a packet with sequence number $i$ be ... $p_{k+2}$ is not sent, then $p_{k+1}$ must not have been sent.
krishnajsw
answered
in
Computer Networks
Feb 6
by
krishnajsw
326
views
goclasses2024-mockgate-14
computer-networks
go-back-n
1-mark
4
votes
0
answers
26
GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 51
Consider the following forwarding table in a router that uses longest prefix matching to forward packets. Assume that 4-bit addressing is used. ... $X=0$ and $Y=00$ $X=01$ and $Y=00$ $X=010$ and $Y=00$ $X=00$ and $Y=0$
GO Classes
asked
in
Computer Networks
Feb 5
by
GO Classes
309
views
goclasses2024-mockgate-14
computer-networks
ip-packet
multiple-selects
2-marks
2
votes
2
answers
27
Subnets
Given an IP address 156.233.42.56 with a subnet mask of 7 bits. How many hosts and Subnets are Possible ? 126 hosts and 510 subnet 128 host and 512 subnet 510 hosts and 126 subnet 512 hosts and 128 Subnet
akshay_123
answered
in
Computer Networks
Jan 31
by
akshay_123
2.4k
views
subnetting
computer-networks
network-addressing
0
votes
1
answer
28
Gate CSE
Ospf And RIP routing algorithms are which layer protocols?
Mrityudoot
answered
in
Computer Networks
Jan 30
by
Mrityudoot
89
views
1
vote
1
answer
29
TCP
A TCP segment consisting of 1500 bits of data and 160 bits of header is send to the IP layer ,which appends another 160 bits of header. This is then transmitted through two network,each of which uses 24-bit packet header. The destination network has a maximum packet size of 800 bits. How many bits,including headers,are delivered to the network layer protocol at the destination??
prasantkr.singh
answered
in
Computer Networks
Jan 29
by
prasantkr.singh
304
views
made-easy-test-series
8
votes
2
answers
30
GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 51
A TCP connection has been established between hosts $\text{A}$ and $\text{B. A}$ receives a packet from $\text{B}$ with the following field values shown below: Sequence: $1001$ Acknowledgment: $5001$ Window size: $3000$ [ ... Payload Size: $1000]$ Sequence: $8001$ Acknowledgment: $1053$ Window size: $2000$ [TCP Payload Size: $1000]$
Sachin Mittal 1
answered
in
Computer Networks
Jan 29
by
Sachin Mittal 1
721
views
goclasses2024-mockgate-13
goclasses
computer-networks
tcp
multiple-selects
2-marks
2
votes
1
answer
31
GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 50
Consider a laptop trying to access a file via HTTP from a server. The laptop knows its own IP address and the server's IP address. Below list the following messages that appear on the Laptop's network (in the order that they would occur), by listing the letter associated with ... $a, e, c, d, g, c, b, f, c$
SankarVinayak
answered
in
Computer Networks
Jan 29
by
SankarVinayak
262
views
goclasses2024-mockgate-13
goclasses
computer-networks
http
2-marks
7
votes
1
answer
32
GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 52
Consider a sliding window protocol with a window size of $5$ using cumulative ACKs (and ACK is being sent for each segment). Retransmissions: retransmissions occur under two conditions: Reception of three duplicate ACKs (that is, three identical ... first retransmitted (expressed in terms of msec after $t=0 )?$ $23$ $42$ $43$ $102$
Mahanth Yalla
answered
in
Computer Networks
Jan 29
by
Mahanth Yalla
757
views
goclasses2024-mockgate-13
goclasses
computer-networks
sliding-window
2-marks
4
votes
1
answer
33
GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 22
An IP router implementing Classless Inter-domain Routing (CIDR) receives a packet with address $128.96.39.10.$ ... will be forwarded is __________. $\text{R}2$ $\text{R}3$ $\text{R}4$ $\text{R}6$
SankarVinayak
answered
in
Computer Networks
Jan 29
by
SankarVinayak
319
views
goclasses2024-mockgate-13
goclasses
computer-networks
routing
subnetting
1-mark
2
votes
0
answers
34
why is there no reduction in performance of stop and wait ARQ for satellite connections in comparison with other sliding window protocols?
pcla
asked
in
Computer Networks
Jan 28
by
pcla
117
views
computer-networks
stop-and-wait
0
votes
1
answer
35
Computer Networks
Question is from PW: Answer given : 3th = b,c 4th = 30 My answer: 3th = every IP belongs to different subnet. 4th = 32 (not knowing about rfc 1812 rules).
Rohit Chakraborty
answered
in
Computer Networks
Jan 27
by
Rohit Chakraborty
252
views
computer-networks
test-series
subnetting
1
vote
1
answer
36
Computer Networks Basics
when i know the ip address in classfull adress i can directly send a message right why to identfy the network id of that and mac address of that ip
prasantkr.singh
answered
in
Computer Networks
Jan 24
by
prasantkr.singh
125
views
0
votes
1
answer
37
Test Series
Even through B's browser has only viewed the first 80 bytes, its stack has received up to byte 600 in sequence from A. What will be the ACK and window in TCP header that B next sends to A? Note: If ACK is X and window in TCP header is Y then write answer as X+Y.
prasantkr.singh
answered
in
Computer Networks
Jan 23
by
prasantkr.singh
107
views
computer-networks
test-series
tcp
10
votes
2
answers
38
GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 40
Consider a network with two links. Node $\text{A}$ is trying to send packets to node $\text{C}.$ Let $p 1$ be the probability of failure on the first link $\text{(A-B)}$, and $p2$ ... C. $\dfrac{p_1}{1-p_1}+\dfrac{p_2}{1-p_2}$ D. $\dfrac{1}{\left(1-p_1\right)\left(1-p_2\right)}$
viral8702
answered
in
Computer Networks
Jan 22
by
viral8702
798
views
goclasses2024-mockgate-12
goclasses
computer-networks
packet-switching
2-marks
100
votes
21
answers
39
GATE CSE 2016 Set 1 | Question: 54
For a host machine that uses the token bucket algorithm for congestion control, the token bucket has a capacity of $1$ $\text{megabyte}$ and the maximum output rate is $20$ $\text{megabytes}$ per $\text{second}$. Tokens arrive at a rate to ... to send $12$ $\text{megabytes}$ of data. The minimum time required to transmit the data is _____________ $\text{seconds}$.
Ray Tomlinson
answered
in
Computer Networks
Jan 22
by
Ray Tomlinson
41.5k
views
gatecse-2016-set1
computer-networks
token-bucket
normal
numerical-answers
2
votes
1
answer
40
GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 10
Which of the following is/are true in context of error control? A CRC of length $\text{R}$ is calculated over a message of length $\text{M}$ ... code set has a minimum Hamming distance of two. A larger Hamming distance is needed to detect errors than to correct errors.
squirrel69
answered
in
Computer Networks
Jan 22
by
squirrel69
627
views
goclasses2024-mockgate-12
goclasses
computer-networks
hamming-code
multiple-selects
1-mark
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