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Recent questions tagged computer-networks

2 2 votes
1 answers 1 answer
363
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Unacademy Test Series
HOST A wants to send 7 packets to HOST B using Go Back-N Sliding window protocol. If every 4th packet sent by A gets lost, then find how many packets A will send to B to...
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0 0 votes
0 0 answers
8
8 views
GATE@ZEAL MOCK TEST
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0 0 votes
0 0 answers
7
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PW Test series
In the network 143.128.67.235 / 20, it x represent the decimal value of 3rd octet and y represent the decimal value of 4th octet of last IP address assigned to any host, ...
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1 1 vote
1 1 answer
372
372 views
Wrong concept in Notes given by Made Easy?
Can anyone please confirm:In the last fragment, if we are having 4B (which is not a multiple of 8), then do we add 4 padding bits? Below is an image from Made Easy's Ram ...
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0 0 votes
1 1 answer
353
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GATE 2026
Is CSMA/CA included in GATE syllabus, I heard my professor saying that it is removed since 2020 and syllabus is only till CSMA/CD, and yes after 2020, CSMA/CA questions w...
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13 13 votes
6 6 answers
1.1k
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GO Classes DPP | CN | ROUTING
The routing table of a router is shown below:\[\begin{array}{|l|l|l|}\hline\text{Destination} & \text{Subnet Mask} & \text{Interface} \\\hline140.24.56.0 & 255.255.254.0 ...
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9 9 votes
4 4 answers
721
721 views
GO Classes DPP | CN | CSMA/CD
A university campus is redesigning its legacy Ethernet network (Classic CSMA/CD) that operates at $1$ Gbps. The network engineers have specified that the maximum possible...
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6 6 votes
4 4 answers
629
629 views
GO Classes DPP | CN | CSMA/CD
A CSMA/CD protocol is surprisingly used on a geostationary satellite link between two ground stations. The data transmission rate on the link is $100$ Mbps . The distance...
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9 9 votes
2 2 answers
518
518 views
GO Classes DPP | CN | DVR
A network contains $6$ routers P1 to P6 interconnected with the following link costs:  Routers exchange information using a distance vector algorithm.Once routing stabili...
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7 7 votes
2 2 answers
469
469 views
GO Classes DPP | CN | DVR
Consider a network of $6$ routers, A1 to A6 with link costs as shown in the following diagram:  Assume a standard distance vector routing protocol is used.Initially, some...
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9 9 votes
2 2 answers
465
465 views
GO Classes DPP | CN | ETHERNET
A CSMA/CD network operates at $1 ~\text{Gbps}$ with a minimum frame size of $512 ~\text{bytes}$. The maximum segment length allowed is $200 ~\text{meters}$. If the data r...
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6 6 votes
2 2 answers
363
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GO Classes DPP | CN | ETHERNET
In a CSMA/CD network, the bandwidth is $100 \text{Mbps}$ and the minimum frame size is $512 ~\text{bits}$. If the network segment length is increased by $50 \%$ and the d...
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9 9 votes
4 4 answers
702
702 views
GO Classes DPP | CN | SUBNETTING
You are given the network $\verb|10.1500.0.0/19|$. You need to create multiple subnets where each subnet must have exactly $\mathbf{1022}$ usable hosts.What is the maximu...
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8 8 votes
3 3 answers
440
440 views
GO Classes DPP | CN | SELECTIVE REPEAT
A sender uses the Selective Repeat ARQ protocol.Frame size $=2000 \text{bits}$ Sender transmission rate $=500 \mathrm{Kbps}$ $(1 \mathrm{Kbps}=1000 \mathrm{bps})$ ACK siz...
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11 11 votes
3 3 answers
528
528 views
GO Classes DPP | CN | STOP AND WAIT
A network engineer is analyzing a link that uses the Stop-and-Wait ARQ protocol. The data frames are $\mathrm{2000 ~bytes}$ in size and are sent at a rate of $\mathrm{125...
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10 10 votes
2 2 answers
614
614 views
GO Classes DPP | CN | GOBACK-N
In a Go-Back-N ARQ protocol with a window size of $7$, every $\mathbf{4th}$ packet is lost in the forward path.If the sender sends $12$ packets, how many total transmissi...
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5 5 votes
2 2 answers
380
380 views
GO Classes DPP | CN | TOKEN BUCKET
A token bucket regulator has a bucket capacity of $\mathrm{1 ~MB}$ and a token arrival rate of $\mathrm{10 ~Mbps}$ .If the bucket is initially full, what is the maximum t...
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