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Recent questions and answers in Computer Networks
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votes
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answer
1
What is the Network ID for the network denoted by 192.168.242.5/20? 192.168.242.0 192.168.240.0 192.168.226.0 192.168.192.0
archiii
31
views
archiii
answered
1 day
ago
0
votes
0
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2
You have the following four contiguous networks: 10.0.0.0/24, 10.0.1.0/24, 10.0.2.0/24, and 10.0.3.0/24. What is the supernet address that can represent all these networks?
Ayankahn
27
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Ayankahn
asked
3 days
ago
2
votes
2
answers
3
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 __________.
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 ...
satyaAchar
1.7k
views
satyaAchar
answered
5 days
ago
Computer Networks
gatecse2024-set2
numerical-answers
computer-networks
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1
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4
does ack sent by the reciver contains crc
Priya03
53
views
Priya03
answered
6 days
ago
Computer Networks
computer-networks
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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? $8.000$ $8.008$ $15.992$ $16.000$
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...
N SuryaNarayana Raj
2.1k
views
N SuryaNarayana Raj
answered
Apr 9
Computer Networks
gatecse2024-set1
computer-networks
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2
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2
answers
6
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 ___________.
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 ...
N SuryaNarayana Raj
1.6k
views
N SuryaNarayana Raj
answered
Apr 9
Computer Networks
gatecse2024-set2
numerical-answers
computer-networks
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0
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7
Why does the transmission rate in the reserved link gets divided when more concurrent connections are established?
I am reading Kurose Computer Networking book 8e, on page number 57, under 1.3.2 Circuit SwitchingBecause it link has $4$ circuits, for each link used by the end-to-end co...
tbhaxor
41
views
tbhaxor
asked
Apr 7
Computer Networks
computer-networks
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0
answers
8
Link vs Channel in computer networking
While reading computer networking, I am confused between link and channel and seen people using this interchangeably (which often bugs me). Language written in books and forums A link refers to the most basic physical or logical connection between two devices. ... A can connect to B via Ethernet, and A can connect to C via RF. What do you think about this?
While reading computer networking, I am confused between link and channel and seen people using this interchangeably (which often bugs me).Language written in books and f...
tbhaxor
57
views
tbhaxor
asked
Apr 5
Computer Networks
computer-networks
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4
votes
1
answer
9
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 $Y=0$
Consider the following forwarding table in a router that uses longest prefix matching to forward packets. Assume that 4-bit addressing is used.$$\begin{array}{c|c}\hline ...
Jayaprakash M
385
views
Jayaprakash M
answered
Apr 5
Computer Networks
goclasses2024-mockgate-14
computer-networks
ip-packet
multiple-selects
2-marks
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1
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3
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10
CN: Go Back N
Station A needs to send a message consisting of 15 packets to station B' using a sling window (window size 4) and go-back-N error control strategy. All packets are ready and immediately available for transmission. If every 6th packet that A' transmits gets lost (but no Acks from ... of packets that A' will transmit for sending the message to B' ? (a) 29 (b) 33 (c) 27 (d) 25
Station A needs to send a message consisting of 15 packets to station ‘B’ using a sling window (window size 4) and go-back-N error control strategy. All packets are r...
akg_011
2.1k
views
akg_011
answered
Mar 31
Computer Networks
go-back-n
sliding-window
computer-networks
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1
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1
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11
distance routing algorithm
statement : distance routing algorithm is adaptive algorithm which consider the load on the network whether the given statement is true or not ?
statement : distance routing algorithm is adaptive algorithm which consider the load on the networkwhether the given statement is true or not ?
sachin486
844
views
sachin486
answered
Mar 30
Computer Networks
computer-networks
distance-vector-routing
routing
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1
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2
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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 $10.12 .3 .255$? $10.12 .2 .0 / 23$ $10.12 .2 .0 / 24$ $10.12 .0 .0 / 22$ $10.12 .2 .0 / 22$
Which one of the following $\text{CIDR}$ prefixes exactly represents the range of $\text{IP}$ addresses $10.12 .2 .0$ to $10.12 .3 .255$?$10.12 .2 .0 / 23$...
satyaAchar
2.0k
views
satyaAchar
answered
Mar 30
Computer Networks
gatecse2024-set2
computer-networks
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0
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0
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13
Channel utilisation
I am having problems calculating channel utilization. The question at hand reads as follows: An application using TCP and will send data in windows of 64000 bytes over a 100 Mbit/s link. The round-trip time is 20ms and transmission times can be neglected. What ... windows size / (Bandwidth * RTT) but I am unsure if this is the correct way. Any help would be greatly appreciated.
I am having problems calculating channel utilization. The question at hand reads as follows: An application using TCP and will send data in windows of 64000 bytes over a ...
Ger
82
views
Ger
asked
Mar 25
Computer Networks
computer-networks
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3
votes
2
answers
14
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
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...
archiii
3.1k
views
archiii
answered
Mar 12
Computer Networks
computer-networks
go-back-n
sliding-window
made-easy-test-series
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0
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4
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15
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
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 ...
Vish_777
977
views
Vish_777
answered
Mar 4
Computer Networks
computer-networks
zeal-workbook
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0
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0
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16
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) in Case 2, why can't i just use DBA (Directed Broadcasting), making the Destination IP 10.255.255.255 ?
Going through the concept of LBA (Limited Broadcasting) and DBA (Directed Broadcast Address), if i consider two casesCase 1 : when host A (10.1.2.3) want to send the pack...
Yashdeep2000
134
views
Yashdeep2000
asked
Mar 2
Computer Networks
computer-networks
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55
votes
12
answers
17
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? $20$ $40$ $160$ $320$
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{mil...
rj2020
26.9k
views
rj2020
answered
Feb 27
Computer Networks
gatecse-2006
computer-networks
sliding-window
normal
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0
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0
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18
IPv4 Fragmentation
A packet has arrived in which the offset value is 100. Then what's the number of 1st Byte?
A packet has arrived in which the offset value is 100. Then what's the number of 1st Byte?
mridul_negi
124
views
mridul_negi
asked
Feb 25
Computer Networks
computer-networks
fragmentation
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0
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19
#cn
Çșȇ ʛấẗẻ
72
views
Çșȇ ʛấẗẻ
asked
Feb 24
Computer Networks
computer-networks
subnetting
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20
Is throughput and link utilization is same. What are the other ways to ask efficiency?
HarshaVardhan1908
88
views
HarshaVardhan1908
asked
Feb 22
Computer Networks
computer-networks
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1
votes
1
answer
21
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
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 $\text{IP}$ Addre...
rexritz
1.8k
views
rexritz
answered
Feb 19
Computer Networks
gatecse2024-set2
computer-networks
multiple-selects
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1
votes
0
answers
22
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?
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 numbe...
DarkRahul
272
views
DarkRahul
asked
Feb 18
2
votes
2
answers
23
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 __________.
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 ...
rexritz
2.1k
views
rexritz
answered
Feb 18
Computer Networks
gatecse2024-set1
numerical-answers
computer-networks
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–
1
votes
1
answer
24
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
Which of the following statements about $\text{IPv4}$ fragmentation is/are TRUE?The fragmentation of an $\text{IP}$ datagram is performed only at the sourc...
Sachin Mittal 1
2.7k
views
Sachin Mittal 1
answered
Feb 18
Computer Networks
gatecse2024-set2
computer-networks
multiple-selects
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2
votes
1
answer
25
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 $\text{N}_{P}+1$
$\mathrm{TCP}$ client $\mathrm{P}$ successfully establishes a connection to $\text{TCP}$ server $\mathrm{Q}$. Let $\text{N}_{P}$ denote the sequence number in the $\te...
phaniphani
1.8k
views
phaniphani
answered
Feb 16
Computer Networks
gatecse2024-set1
multiple-selects
computer-networks
tcp
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–
3
votes
2
answers
26
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 ... $\text{(ii), (iv), (i), (iii)}$ $\text{(iv), (ii), (i), (iii)}$
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...
phaniphani
2.5k
views
phaniphani
answered
Feb 16
Computer Networks
gatecse2024-set1
computer-networks
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2
votes
1
answer
27
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
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 netw...
aniketwaghela
2.0k
views
aniketwaghela
answered
Feb 16
Computer Networks
gatecse2024-set1
multiple-selects
computer-networks
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–
2
votes
1
answer
28
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 $\mathrm{Y}$
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...
Deepak Poonia
3.3k
views
Deepak Poonia
answered
Feb 16
Computer Networks
gatecse2024-set2
computer-networks
multiple-selects
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–
0
votes
1
answer
29
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 ____________.
Consider sending an $\text{IP}$ datagram of size $1420$ bytes (including $20$ bytes of $\text{IP}$ header) from a sender to a receiver over a path of two links with a rou...
aniketwaghela
2.4k
views
aniketwaghela
answered
Feb 16
Computer Networks
gatecse2024-set1
numerical-answers
computer-networks
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0
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2
answers
30
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
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 switche...
nageshhh
900
views
nageshhh
answered
Feb 10
Computer Networks
computer-networks
throughput
slotted-aloha
pure-aloha
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5
votes
1
answer
31
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.
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 hos...
PreyumKr
693
views
PreyumKr
answered
Feb 8
Computer Networks
goclasses2024-mockgate-14
computer-networks
ip-address
multiple-selects
1-mark
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–
4
votes
2
answers
32
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
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 t...
squirrel69
652
views
squirrel69
answered
Feb 7
Computer Networks
goclasses2024-mockgate-14
computer-networks
packet-switching
multiple-selects
1-mark
+
–
4
votes
1
answer
33
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
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 i...
Priyotosh2001
433
views
Priyotosh2001
answered
Feb 7
Computer Networks
goclasses2024-mockgate-14
computer-networks
tcp
multiple-selects
2-marks
+
–
4
votes
1
answer
34
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 ... must have been sent. If $p_{k+2}$ is not sent, then $p_{k+1}$ must not have been sent.
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...
krishnajsw
388
views
krishnajsw
answered
Feb 6
Computer Networks
goclasses2024-mockgate-14
computer-networks
go-back-n
1-mark
+
–
3
votes
2
answers
35
GATE Overflow Test Series | Mock GATE | Test 6 | Question: 51
In a packet switched network, packets are routed from source to destination along a single path having $2$ intermediate nodes. If the message size is $32$ bytes and each packet contains a header of $4$ bytes, then the optimum packet size including header in bytes is _______
In a packet switched network, packets are routed from source to destination along a single path having $2$ intermediate nodes. If the message size is $32$ bytes and each ...
AniketAshara
315
views
AniketAshara
answered
Feb 5
Computer Networks
go2025-mockgate-6
numerical-answers
computer-networks
packet-switching
normal
2-marks
+
–
2
votes
2
answers
36
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
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 subnet128 host and 512 subnet510 hosts and 126 ...
akshay_123
2.5k
views
akshay_123
answered
Jan 30
Computer Networks
subnetting
computer-networks
network-addressing
+
–
0
votes
1
answer
37
Gate CSE
Ospf And RIP routing algorithms are which layer protocols?
Ospf And RIP routing algorithms are which layer protocols?
Mrityudoot
122
views
Mrityudoot
answered
Jan 30
1
votes
1
answer
38
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??
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 t...
prasantkr.singh
399
views
prasantkr.singh
answered
Jan 29
Computer Networks
made-easy-test-series
+
–
8
votes
2
answers
39
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: $1000]$
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: $...
Sachin Mittal 1
842
views
Sachin Mittal 1
answered
Jan 29
Computer Networks
goclasses2024-mockgate-13
goclasses
computer-networks
tcp
multiple-selects
2-marks
+
–
2
votes
1
answer
40
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 ... $a, e, c, d, g, c, b, f, c$
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 a...
SankarVinayak
321
views
SankarVinayak
answered
Jan 29
Computer Networks
goclasses2024-mockgate-13
goclasses
computer-networks
http
2-marks
+
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