Recent questions and answers in Computer Networks

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1

TRUE OR FALSE

asked 9 hours ago in Computer Networks by eyeamgj Active (2.8k points) | 13 views

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2

SELF DOUBT
ANSWER WILL BE 28.77 SEC OR 28.67SEC????? Consider sending an object of size O = 100 kbytes from server to client. Let MSS= 536 bytes and RTT = 100 msec. Suppose the transport protocol uses static windows with window size W . For a transmission rate of 28 kbps, determine the minimum possible latency. Determine the minimum window size that achieves this latency.

asked 10 hours ago in Computer Networks by eyeamgj Active (2.8k points) | 9 views

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0 answers

3

regarding syllabus
macroscopic description of TCP throughput is in syllabus or not???

asked 12 hours ago in Computer Networks by eyeamgj Active (2.8k points) | 8 views

+15 votes

6 answers

4

GATE2006-44
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? $20$ $40$ $160$ $320$

answered 15 hours ago in Computer Networks by varun2208 (29 points) | 6.4k views

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5

SELF DOUBT
What is the value of ssthreshold at the 18th transmission round? ANY WHY PLEASE EXPLAIN During what transmission round is the 70th segment sent? Assuming a packet loss is detected after the 26th round by the receipt of a triple duplicate ACK, what will be the values of the congesion-window size and of ssthreshold?

asked 17 hours ago in Computer Networks by eyeamgj Active (2.8k points) | 16 views

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6

SELF DOUBT PLEASE GIVE EXAMPLE
PLEASE FRAME AN EXAMPLE TO EXPLAIN THE CASES MENTIONED IN THIS The third major event that must be handled by the TCP sender is the arrival of an acknowledgment segment (ACK) from the receiver (more specifically, a segment containing a valid ACK field value) ... control, that data from above is less than MSS in size, and that data transfer is in one direction only. */

asked 19 hours ago in Computer Networks by eyeamgj Active (2.8k points) | 12 views

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2 answers

7

Probability of sending a frame in the first slot without any collision

answered 1 day ago in Computer Networks by Anil Ji Active (3k points) | 17 views

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1 answer

8

METEST SERIES
In slow start, a sender doubles its window size every RTT if all sent packets were acknowledged. IT IS GIVEN AS TRUE BUT WHAT IF THE THRESHOLD OCCURS THEN IT WILL NOT DOUBLE OR SAY ON DOING DOUBLE IT IS CROSSING THE THRESHOLD LIMIT THEN IT INCREASES ACCORDINGLY ..SO I THINK IT SHOULD BE FASE ?????

answered 1 day ago in Computer Networks by Anil Ji Active (3k points) | 17 views

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9

REGARDING SYLLABUS
Alternating Bit Protocol work IS IN SYLLABUS?? [closed]

asked 1 day ago in Computer Networks by eyeamgj Active (2.8k points) | 11 views

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0 answers

10

CN PROBLEM
I AM NOT GETTING THE UNDERLINED PART ...........THAT IF ACKS ARE NOT RECEIVED THAN HOW DOES THE SENDER WINDOW SLIDE.... Consider the Go-Back-N (GBN) protocol with a sender window size of 3 and a sequence number range of 1024. Suppose that at time t, the next in-order ... thus [ K-N , K− 1]. By these arguments, the senders window is of size 3 and begins somewhere in the range [K −N ,1 ].

asked 1 day ago in Computer Networks by eyeamgj Active (2.8k points) | 18 views

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0 answers

11

cn doubt
https://gateoverflow.in/66837/made-easy-2017 in this question answer for (non persistent - persistant )will be 16 -10 =6 or 18-10=8 please check???????

asked 1 day ago in Computer Networks by eyeamgj Active (2.8k points) | 31 views

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0 answers

12

ME TESTSERIES
If flooding is used to send packets from A to E, then the total number of packets generated in the above network when hop count for A to E is 3 are ________. ANSWER IS 14 .....BUT THE DOUBT IS THAT IS THEIR ANY EFFECT OF SAYING HOP COUNT FOR A TO E BECZ HERE IN 14 WE COUNTED THE HOP OF LENGTH...

asked 2 days ago in Computer Networks by eyeamgj Active (2.8k points) | 26 views

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1 answer

13

madeasy testseries cn
Ramesh buy a new laptop, he connected it to Ethernet and after sometime he wishes to surf the internet, so laptop send a DNS request. What will be the sequence of header packet geenrated on request, as it leaves the laptop? udp ... ;/p> Ethernet ip tcp dns udp dns Ethernet ip

answered 2 days ago in Computer Networks by Aakash_ Junior (715 points) | 31 views

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14

madeasy test series
: In IPv4 Checksum is used as error detecting technique, where as in IPv6 CRC is used. it is true for ipv4 but for ipv6 I have a doubt that they explained this as true becz ipv6 has explicit crc header ...so i m confused that is it true becz no where in ipv6 header crc is present nd why they are taking case of explicit??

asked 2 days ago in Computer Networks by eyeamgj Active (2.8k points) | 16 views

0 votes

2 answers

15

true/false
Suppose that the last sampleRTT in a TCP connection is equal to 1 second. Then timeout for the connection will necessarily be set to a value >= 1 second. please also give reason

answered 2 days ago in Computer Networks by sudhir singh (199 points) | 19 views

+17 votes

3 answers

16

GATE2016-1-52
Consider that $B$ wants to send a message $m$ that is digitally signed to $A$. Let the pair of private and public keys for $A$ and $B$ be denoted by ${K_{x}}^-$ and ${K_{x}}^+$ for $x=A, B$, respectively. Let $K_{x}(m)$ represent the operation of encrypting $m$ with a key $K_{x}$ and $H(m)$ ... {B}}^-(H(m))\right\}$ $\left\{m, {K_{A}}^-(H(m))\right\}$ $\left\{m, {K_{A}}^+(m)\right\}$

answered 3 days ago in Computer Networks by Mk Utkarsh Boss (12.9k points) | 2.3k views

0 votes

2 answers

17

ME-CN-Practice Book-Q94

answered 3 days ago in Computer Networks by Aakash_ Junior (715 points) | 89 views

0 votes

2 answers

18

Ethernet
IF the propagation delay csma/cd network is 750 bit times then what is the slot if the jamming signal is 50 bits?

answered 3 days ago in Computer Networks by Aakash_ Junior (715 points) | 99 views

+1 vote

1 answer

19

Why does Jamming signal not collide ?
Hi Guys, In Ethernet whenever collision happens station sends a Jamming signal. But why does these special signal not collide ? In many question i saw they also have TT and TP. So what does make them collision free ? PS: Refer Problem 2 on http://web.eecs.umich.edu/~zmao/eecs489/MT2/mt2reviewHints.pdf

answered 3 days ago in Computer Networks by Aakash_ Junior (715 points) | 139 views

0 votes

1 answer

20

test series
Ques. Consider the following statements: S1 : Token bucket shapes bursty traffic into fixed-rate traffic by averaging the data rate. S2 : Leaky buckets are more restrictive compared to token bucket. S3 : A choke packet is a congestion-control mechanism in which a packet is sent by ... . Which of the given statements are false? A. Only S2 B. Only S1 C. Both S2 and S3 D. All of these

answered 4 days ago in Computer Networks by Anil Ji Active (3k points) | 25 views

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0 answers

21

Test series
Ques. Which of the following is incorrect? A. In circuit switched network, switches require connection establishment and teardown phases, where as in packet switched network doesn't. B. Unlike packet switching, circuit switched networks do not need ... a destination address. D. Under some circumstance, a circuit switched network may prevent some sender from starting new conversation.

asked 4 days ago in Computer Networks by Brij gopal Dixit 1 (37 points) | 10 views

0 votes

0 answers

22

ANDREW S. TANNENBUM (5th edition), TRANSPORT LAYER CHAPTER-6, PAGE NUMBER- 523

asked 4 days ago in Computer Networks by aambazinga (337 points) | 53 views

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0 answers

23

self doubtcn mtu
Suppose that host A is connected to a router R 1, R 1 is connected to another router, R 2, and R 2 is connected to host B. Suppose that a TCP message that contains 900 bytes of data and 20 bytes of TCP header is passed to the IP code at host A ... bytes, including an 8-byte frame header, and link R2-B can support a maximum frame size of 512 bytes including a 12-byte frame header.

asked 4 days ago in Computer Networks by eyeamgj Active (2.8k points) | 15 views

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0 answers

24

Question on Datagram
Data are transmitted over the Internet in datagrams, which are structured blocks of bits. Each datagram contains header information organized into a maximum of 14 different fields (specifying many things, including the source and destination addresses) and a data area ... data area can be transmitted if the header length is 20 octets and the total length is as long as possible?

asked 4 days ago in Computer Networks by Balaji Jegan Active (1.2k points) | 13 views

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2 answers

25

SELFDOUBT IP
SUPPOSE WE ARE GIVEN TWO BITS FOR SUBNET THEN WHICH ONE WILL BE THE THIRD SUBNET 10 OR 11

answered 4 days ago in Computer Networks by abhishekmehta4u Boss (19.7k points) | 24 views

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1 answer

26

explanation doubt cn
http://ledr.luon.net/documents/2IC10/bas_mark/week1.pdf in the exercise 9 of the pdf ...how did they calculated path length i+j-2 ...and moreover it if possible please derive it in easy way with explanation.....

answered 5 days ago in Computer Networks by abhishekmehta4u Boss (19.7k points) | 15 views

0 votes

2 answers

27

POP3 vs IMAP
What are some key differences between POP3 and IMAP?

answered 5 days ago in Computer Networks by Balaji Jegan Active (1.2k points) | 25 views

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0 answers

28

selfdoubtcn
<a href="https://gateoverflow.in/1332/gate2009-46">https://gateoverflow.in/1332/gate2009-46</a>   here in the Ist equation ....the message nd cipher text are as same as given or they should be reversed.

asked 5 days ago in Computer Networks by eyeamgj Active (2.8k points) | 18 views

0 votes

1 answer

29

Ip addressing.
Destination Subnet Mask Interface 128.75.43.0 255.255.255.0 Eth 0 128.75.43.0 255.255.255.128 Eth 1 144.16.68.0 255.255.255.0 Eth 2 144.16.68.64 255.255.255.224 Eth 3 On which interfaces will the router forward packets addressed to destinations 128.75.43.16 and 144.16.68.117 ? a. Eth0 and Eth3 b. Eth1 and Eth3 c. Eth0 and Eth2 d. Eth1 and Eth2

answered 6 days ago in Computer Networks by Anil Ji Active (3k points) | 29 views

0 votes

1 answer

30

Made easy workbook
In question 13 Can we directly apply the formulae or we have to change the bandwidth(if have to change then how can we change)

answered 6 days ago in Computer Networks by Anil Ji Active (3k points) | 34 views

0 votes

0 answers

31

#repeaters
To prevent signal alteration, What is the max. number of repeaters that can be placed on one 10 base 5 or 10 base 2 network ? a. four b. five c. three d. Any number

asked 6 days ago in Computer Networks by Satbir Junior (773 points) | 22 views

0 votes

1 answer

32

Made easy
How to solve it?Q 5

answered Jul 11 in Computer Networks by Sayan Bose Active (2.6k points) | 36 views

0 votes

0 answers

33

Physical layer
To transmit 100 digitized voice channel using a channel of 20 KHz. what should be the ratio of bits/hertz if we use no guard band. assume the human voice normally contains frequencies from 0 to 4000 hz and assume 8 bits per sample.

asked Jul 10 in Computer Networks by Jaggi (33 points) | 21 views

0 votes

1 answer

34

Networking devices
Q. Which of the following statement is false to deploy a router??? A. The LANs interconnected must belong to different networks. B. The Ethernet interface and the LAN must belong to the same networks. C. The Routers sharing the same link must belong to the same network. D. All the interfaces of the router must belong to same network.

answered Jul 10 in Computer Networks by Gaurav Parashar (159 points) | 25 views

0 votes

1 answer

35

###Made test series## Networking devices

answered Jul 10 in Computer Networks by Gaurav Parashar (159 points) | 27 views

0 votes

0 answers

36

Transport Layer-Self doubt
Here A,B,C are 3 networks and a packet sends from A to C . When packet 180 B sends from A to B it is connected with 20B IP header as well as 20 B TCP header. In network B we are segmenting data packet as 100 B and we are removing IP header ... destination C. My question is if IP header are different for network A, B,C then how TCP header will be same for network A,B,C?

asked Jul 10 in Computer Networks by srestha Veteran (88.8k points) | 29 views

0 votes

0 answers

37

Syllabus Doubt
Is Guided and Unguided mode of transmission from physical layer really asked in exam?

asked Jul 9 in Computer Networks by Na462 Active (4k points) | 26 views

0 votes

1 answer

38

ugc net 2018 july-44

answered Jul 9 in Computer Networks by Anil Ji Active (3k points) | 119 views

0 votes

1 answer

39

ugc net 2018 july-47

answered Jul 9 in Computer Networks by Anil Ji Active (3k points) | 122 views

0 votes

1 answer

40

ugc net 2018 july-46

answered Jul 9 in Computer Networks by Anil Ji Active (3k points) | 116 views

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author	user:martin
title	title:apple
content	content:apple
exclude	-tag:apple
force match	+apple
views	views:100
score	score:10
answers	answers:2
is accepted	isaccepted:true
is closed	isclosed:true

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