Recent questions in Computer Networks

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1

test series
consider PDU (transport layer packet ) size is 2260 bytes at source host. MTU for the network is 400 bytes and IP header size is 2 bytes. number of IP datagram for the given PDU is: here I tried this with considering the last fragment's payload ... not be multiple 8 bits leaving padding option irrelevant ? what is the truth about last fragment payload length being multiple 8 or NOT?

asked 1 hour ago in Computer Networks by Krit Verma (27 points) | 1 view

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2

TestBook_FLT
A data is sent to UDP,along with a pair of socket address and the length of the data.After receiving data,UDP adds the header and passes the UDP datagram to IP.What is the maximum size of the payload that can be encapsulated in a UDP datagram, to avoid fragmentation. ... $1500-20-8=1472\,Bytes$ But Answer is given to be $65507$ I know how that figure came but my question is Why that?

asked 2 hours ago in Computer Networks by Ayush Upadhyaya Boss (23.2k points) | 9 views

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3

GATE2019

asked 4 hours ago in Computer Networks by nivedha (95 points) | 7 views

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1 answer

4

Made easy test series computer network gbn Sr sliding window protocol
Consider two computers A and B are connected through a network of 30 Mbps. Assume the distance between them is 3000km and the signal propagation speed is same as the speed of light and the packet size is 12 KB. What is the minimum number of bits ... -N and selective repeat protocol? A . 5 and 6 B. 6 and 7 C. 6 and 6 D. 7 and 8

asked 6 hours ago in Computer Networks by Ram Swaroop Active (1.4k points) | 18 views

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5

madeeasy test series
Q.Consider a network connecting two systems connected 2000 Km apart. The band width of the network is 70 Mbps. The propagation speed of the signal is 2 10 m/sec and average size of the frame is 10 KB. Assume processing delays at nodes are negligible. Selective repeat ... as 10 x 10^3 bits , how? it should be multiplied with 8 to convert frame to bits. correct me if i m wrong.

asked 6 hours ago in Computer Networks by Badayayash (401 points) | 9 views

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6

Madeeasy test series
An IP router with a MTU of 1400 bytes (excludes header length) has received and IP datagram of size 4000 bytes with on IP header of length 20 bytes. The value of offset field in the header of the third IP fragment generated by the router for this packet are_____

asked 8 hours ago in Computer Networks by leihf[ow (35 points) | 7 views

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3 answers

7

Made Easy test Series: AIMD
Consider a TCP connection using the multiplicative additive congestion control algorithm where the window size at the start is $1 MSS$ and the threshold is $32 MSS$, at the $8th$ transmission time out occurs and enters in a congestion detection phase. The value ... in mss) at the end of $12th$ transmission___? My answer is 16 while ME has given answer as 8, plz verify.

asked 9 hours ago in Computer Networks by chauhansunil20th Active (4.2k points) | 20 views

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8

MeTest-MOCK2
When 54 bytes of data is transferred using the UDP protocol, the efficiency is? (In per cent) IN UDP, the maximum datagram size can be $2^{16}-1 \, bytes$ Now to this, 8 Bytes of UDP header is included and this together must fit within $65535\, bytes$ IPv4 ... are actually sending 54 Bytes, so the efficiency of the protocol is $\frac{54}{65507} \times 100(\,in\,\%)$ Am I correct?

asked 10 hours ago in Computer Networks by Ayush Upadhyaya Boss (23.2k points) | 28 views

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9

Computer Network
Consider a network connecting two systems connected 200 km apart. The bandwidth of the network is 70 Mbps. The propagation speed of the signal is 2 * 10^8 m/sec and the average size of the frame is 10 KB. Assume processing delays at nodes are ... sliding window protocol is used to utilize the full capacity of the network. The minimum its required to represent the window size is.

asked 15 hours ago in Computer Networks by `JEET Active (3.3k points) | 12 views

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10

test series
My answer is 1.5 and the made easy says it is 105. someone, please verify which is correct ASAP

asked 1 day ago in Computer Networks by saif (317 points) | 17 views

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11

Madeeasy Test series

asked 2 days ago in Computer Networks by leihf[ow (35 points) | 34 views

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12

Self Doubt
Does following connection oriented protocol at network layer guarantees us that all packets will reach the destination port safely??

asked 2 days ago in Computer Networks by DIYA BASU (67 points) | 9 views

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13

Gateforum mock 2

asked 2 days ago in Computer Networks by Prince Sindhiya Loyal (6.1k points) | 16 views

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14

Made Easy Test series
I thought 2600 cause after 34, it takes one RTT and size becomes 36 before sending the 14th segment(i.e., segment with window size = 36KB). Questions based on this are confusing. Please clarify.

asked 2 days ago in Computer Networks by Naveen Muralidhar (153 points) | 5 views

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1 answer

15

Sliding Window protocol.
There are two stations A and B connected by a $512 * 10^3$ bps network using a sliding window protocol. The speed of the signal is $10^8$ meter/sec and the distance between two stations is $45,000$ km. If the packet size is $256$ B, then what will be the optimal window size(in packets)?

asked 2 days ago in Computer Networks by `JEET Active (3.3k points) | 19 views

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16

hamming code
what is approach to solve this type of question? [closed]

asked 3 days ago in Computer Networks by Rahul_Rathod_ Junior (565 points) | 30 views

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0 answers

17

MadeEasy
Consider a TCP connection using the multiplicative additive congestion control algorithm where the window size at the start is 1 MSS and the threshold is 32 MSS. At the 8th transmission timeout occurs and enters in a congestion detection phase. The value of window size ( ... 1MSS 10th: 2MSS 11th: 4MSS 12th: 8MSS so the value of window size after the 12th trasmission should be 9MSS right?

asked 3 days ago in Computer Networks by balchandar reddy san Active (1.1k points) | 11 views

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18

ACE Test series
How to find $IP^{-1}$?

asked 3 days ago in Computer Networks by Shubhanshu Boss (18.5k points) | 40 views

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1 answer

19

GATEBOOK-2019 Mock Test1-34
Consider a $512 \times 10 ^3$ link with oneway propagation delay of $500$ milliseconds. Selective retransmission (repeat) protocol is used on this link to send data with a frame size of $1$ kilobyte. Neglect the transmission time of acknowledgement. The minimum number of bits required for the sequence number field to achieve $50 \%$ utilization is ________.

asked 3 days ago in Computer Networks by GATEBOOK Boss (14.1k points) | 92 views

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1 answer

20

GATEBOOK-2019 Mock Test1-35
Given the address $190.1.1.0/28$ in a CIDR environment, the number of usable hosts allowed on this network is _________ $14$ $22$ $12$ $16$

asked 3 days ago in Computer Networks by GATEBOOK Boss (14.1k points) | 26 views

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21

GATEBOOK-2019 Mock Test1-63
Suppose datagrams are limited to $1,500$ bytes (including header) between source Host A and destination Host B. Assuming a $20$-byte IP header and a $20$-byte TCP header, how many datagrams would be required to send an $MP3$ consisting of $4$ million bytes? $2900$ $2740$ $3200$ $4200$

asked 3 days ago in Computer Networks by GATEBOOK Boss (14.1k points) | 62 views

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22

GATEBOOK-2019 Mock Test1-64
What is the value of ssthresh at the $24^{th}$ transmission round? $18$ $13$ $21$ $8$

asked 3 days ago in Computer Networks by GATEBOOK Boss (14.1k points) | 42 views

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23

GATEBOOK-2019 Mock Test1-65
Maximum length of the cable for transmitting data at a rate of $500$ Mbps in an Ethernet LAN with frames of size $X$ bits is $2000$ meters then $X$ value is ________. (Assume the signal speed in the cable to be $2,00,000$ km/s.)

asked 3 days ago in Computer Networks by GATEBOOK Boss (14.1k points) | 33 views

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24

TCP Congestion Window

asked 3 days ago in Computer Networks by Na462 Loyal (8.3k points) | 7 views

+1 vote

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25

madeeasy
Host A transmits 12-bit Hamming code whose hexadecimal value is OxE5F arrives to Host B who is at the receiver end. The medium through the code has been transmitted is not error free but cannot damage parity bit and parity bits has been inserted from left ... respective positions. What was the original value Host A transmitted in hexadecimal, (Assume that not more than 1 bit is in error.)

asked 4 days ago in Computer Networks by mehul vaidya Active (2.8k points) | 43 views

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1 answer

26

TestBook[MOCK]
Frames of 20000 bytes are sent over 10 MBps full duplex link between 2 hosts. Propagation is 45 ms.Suppose that the sliding window protocol is used with the sender window size of 16 and acknowledgements are piggybacked.After sending 35 frames , what is the minimum time sender will have to wait before starting transmission of the next frame

asked 4 days ago in Computer Networks by jatin khachane 1 Loyal (5.8k points) | 69 views

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27

Made Easy Gate Mock-2 Question 56
In the given network system, station A needs to send a payload of 1600 B from its network layer to station B. If fragmentation is done, then the actual data size to be transmitted is ______________ [closed]

asked 4 days ago in Computer Networks by MiNiPanda Boss (20k points) | 52 views

+1 vote

0 answers

28

Made Easy Mock
In the given network system, station A needs to send a payload of 1600B from its network layer to station B. If fragmentation is done, then the actual data size to be transmitted is?

asked 4 days ago in Computer Networks by Somoshree Datta 5 Active (4k points) | 96 views

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29

AppliedCourse MOCK
Consider a TCP connection between two machines (A and B) in an environment with 0% packet loss. Assume the round trip time (RTT) between the two machines is 4 [seconds], and the segment size is 3 [Kbytes]. The bandwidth of the connection is 500 [kbps]. ... close to zero. I.e., TCP packets are continuously, back-to-back, sent out of the sender before the first ack arrives back.)

asked 4 days ago in Computer Networks by jatin khachane 1 Loyal (5.8k points) | 14 views

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30

AppliedCourse MOCK
A system uses selective repeat protocol with window size of 4. If each packet carries 5000 bits , then the time taken to tranfer 5 milion bits of data, if the distance between sender and receiver is 2500km , the propagation speed is 2* 10^8 m/s and data rate is 1Mbps. We assume no data or ACK is lost [closed]

asked 4 days ago in Computer Networks by jatin khachane 1 Loyal (5.8k points) | 28 views

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content	content:apple
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force match	+apple
views	views:100
score	score:10
answers	answers:2
is accepted	isaccepted:true
is closed	isclosed:true

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