Recent questions in Computer Networks

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1

ip computer networks
If block contains 32 IP address which of the following is first address of the block ? (A) 10.0.0.5 (B) 10.0.0.16 (C) 10.0.0.32 (D) 10.0.0.160 (E) None of the above

asked 4 days ago in Computer Networks by Nitesh Choudhary Junior (915 points) | 51 views

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2 answers

2

Computer Networks
" A process can have one or more sockets ". More than one socket for a process.How? Can someone explain this concept?

asked 4 days ago in Computer Networks by Jatin18 (47 points) | 31 views

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1 answer

3

Computer Networks Ethernet
what is the mean of this equation in Ethernet ? Transmission Time >= 2*Propagation Time

asked 5 days ago in Computer Networks by Nitesh Choudhary Junior (915 points) | 33 views

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3 answers

4

Class B Subnetting
In class B if subnet mask is 255.192.0.0 Total Number of networks than can be joined, Here for class B, the default subnet mask is only 255.255.0.0 , but the given subnet mask seems to be not valid for class B ip address. Please correct me if Iam wrong.

asked 5 days ago in Computer Networks by AnilGoudar Active (1.7k points) | 31 views

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1 answer

5

Subnetting
IP address of computer is 196.121.87.160. Subnet mask is 255.255.255.224. What will be the IP address of the 3rd host of 5th subnet (fourth octet) ?

asked 6 days ago in Computer Networks by Abhisek Saha (41 points) | 34 views

+1 vote

3 answers

6

Self Doubt
While Subnetting, is it valid to buy bits from Network Id part ? Or Only we should buy bits from Host Id Part?? Please correct me if i am wrong.

asked 6 days ago in Computer Networks by AnilGoudar Active (1.7k points) | 28 views

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1 answer

7

SubNet Mask
If Direct Broadcast Address of subnet is 201.15.16.31. Which of the following will be subnet mask ?

asked 6 days ago in Computer Networks by AnilGoudar Active (1.7k points) | 30 views

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1 answer

8

networks
In Hierarchical routing for 400 router subnet, the optimal number of levels is (A) 20 (B) 400 (C) 3 (D) 6

asked Jun 15 in Computer Networks by rajjindu (61 points) | 29 views

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1 answer

9

#network security
How is a message sent to the recipient? Receiver wants a message with security ,Authentication, integrity and nonrepudation. Security we can provide by cryptography and remaining three are by using digital signature. So , what is the way to send the plaintext. Please explain it ??

asked Jun 15 in Computer Networks by bharti Junior (833 points) | 22 views

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1 answer

10

#network security
1. What is the difference between message integrity and message authentication ? I have read in frozen : message integrity -: message digest (generated by applying hash function on message ) is being added with original message and by verification of ... in both for assurance of not modified data. Explain it pls. I m not able to visualise it . Thanks

asked Jun 15 in Computer Networks by bharti Junior (833 points) | 15 views

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1 answer

11

computer network

asked Jun 13 in Computer Networks by janmaijay rajput 8 (35 points) | 24 views

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3 answers

12

DSSB_2017
Default subnet mask for a class? 1.255.255.255.0 2.255.0.0.0 3.255.255..0.0 4.All of the above. Please explain if you are answering. Thanku

asked Jun 13 in Computer Networks by Harikesh Kumar (121 points) | 37 views

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1 answer

13

Data link layer
What do u mean by there is no contention in a coma/ CD network. Why csma/ cd is not suitable for a high propagation delay network?

asked Jun 13 in Computer Networks by Kanchan kumari (75 points) | 22 views

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1 answer

14

Computer Network
I know I shouldn't be asking this but still: Window size is 16 bits in TCP so maximum possible value is 2^16=65535 bytes. Why bytes not bits?

asked Jun 12 in Computer Networks by Bad_Doctor (121 points) | 32 views

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1 answer

15

#CBSE UGC-NET-June 2007 #Paper II #Qn 47

asked Jun 12 in Computer Networks by Ritwik (213 points) | 13 views

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0 answers

16

computer netwroks
Which are chapters to study for gate 2018 from Forouzan for computer networks?

asked Jun 11 in Computer Networks by Bad_Doctor (121 points) | 22 views

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2 answers

17

Computer network
Which layer of tcp/ip is responsible for getting data to its destination?. 1. Link layer 2.application layer 3.network layer 4.transport layer

asked Jun 10 in Computer Networks by Dwarika Prasad (15 points) | 127 views

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1 answer

18

#IPV6
Neighbour solicitation is used for which purpose

asked Jun 10 in Computer Networks by Abhinavg (13 points) | 24 views

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0 answers

19

network security
Let m be the message and c be the cipher text. public key=(e,n) and private key=(d,n) c=pe mod(n) Now, raising c to power of d mod(n), we get plain text p = cd mod(n)=ped mod(n). Now since p=ped mod(n), this condition should be true : ed=1 mod(Φ(n)). I didn't understand this equation.

asked Jun 9 in Computer Networks by Bad_Doctor (121 points) | 17 views

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0 answers

20

TCP header
When Checksum is calculated in TCP, why IP header is also included? since it is included why it is only used in computation and not in transmission.

asked Jun 8 in Computer Networks by Bad_Doctor (121 points) | 13 views

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1 answer

21

Networking-Kurose ross
in CSMA/CD after Fifth collision ,what is the probability that a Node choose K=4? The result k=4 correspond to how many seconds delay on a 10 Mbps Ethernet? k is standard notation here

asked Jun 7 in Computer Networks by No_name (255 points) | 31 views

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0 answers

22

Data link layer
Receiver receives out of order protocol is it possible in any protocol specially for selective repeat.if possible then what happened it will accept or discarded?

asked Jun 7 in Computer Networks by Kanchan kumari (75 points) | 16 views

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0 answers

23

#Gate #ComputerNetwork
which edition i will follow for computer networks by tanenbaum? which is the current edition

asked Jun 7 in Computer Networks by Nitesh Choudhary Junior (915 points) | 9 views

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1 answer

24

CSMA/CD
consider two nodes A and B are on the same 10 Mbps Ethernet segment, and the propagation delay between the two nodes is 225 bit times. Suppose at time t = 0 B starts to transmit a frame. Suppose A also transmits at some time t= ... before completing its transmission A recieves bits from B. Assuming node A follows CSMA/CD protocol what is the maximum value of x?

asked Jun 7 in Computer Networks by ishant vithalkar (11 points) | 21 views

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1 answer

25

Piggybacking
When piggybacking occurs then sender is not send any data until receiver will not send acknowledgement.when will receiver send the ack .?

asked Jun 6 in Computer Networks by Kanchan kumari (75 points) | 25 views

+1 vote

1 answer

26

Gateforum Computer Networks
Consider sliding window protocol for a 10MBps channel with the propagation delay of 300 µs. If packet size is 1kB then what is the maximum link utilization for window size of 127? a. 100% b. 75% c. 2.8% d. 43%

asked Jun 3 in Computer Networks by Satyajeet Singh (289 points) | 78 views

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0 answers

27

Network security
Any good source or web link to clearing "encryption and authentication together" not Mac one ,

asked May 29 in Computer Networks by sid1221 Junior (865 points) | 22 views

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2 answers

28

regarding syllabus
In cryptography, is only Asymmetric key cryptography in gate syllabus? Can u please tell me the thing we should leave in network security .

asked May 27 in Computer Networks by bharti Junior (833 points) | 25 views

+2 votes

1 answer

29

Silly window syndrome
One of the case of Silly window syndrome occurrence is when sender is producing only one byte at a time from transport layer . And for that Nagles solution is " collect it upto RTT time (worst case ) or upto 1 MSS (if before ... side. If this solution will be applied here too then every chat will become an email . Plzz clear this thing ???

asked May 25 in Computer Networks by bharti Junior (833 points) | 53 views

+1 vote

1 answer

30

fragmentation
Why has fragmentation done on routers only . As I know the reason of doing fragmentation is data link layer can only receive 1500 bytes (standard Ethernet) from Upper layer (network layer ) so if the upper layer data is bigger than 1500 bytes than it will ... the source end itself a/c to its MTU . Why is it done on router? ? Please help me out . Thank you

asked May 25 in Computer Networks by bharti Junior (833 points) | 25 views

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