Recent questions and answers in Computer Networks

0 votes

1 answer

1

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

answered 5 hours ago in Computer Networks by alokraj1142 (59 points) | 29 views

+1 vote

2 answers

2

networking
Suppose a TCP message that contains 2048 bytes of data and 20 bytes of TCP header is passed to IP for delivery across two networks of the Internet (i.e., from the source host to a router to the destination host). The first ... offsets of the sequence of fragments delivered to the network layer at the destination host. Assume all IP headers are 20 bytes.

answered 9 hours ago in Computer Networks by Saikat (273 points) | 182 views

0 votes

2 answers

3

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

answered 10 hours ago in Computer Networks by Sushant Yadav 1 (167 points) | 31 views

0 votes

3 answers

4

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

answered 12 hours ago in Computer Networks by Parul Raj (11 points) | 37 views

0 votes

2 answers

5

If Go back N protocol is used with a window size of 4 and the ACK for apcket 2 gets lost.

answered 15 hours ago in Computer Networks by Saikat (273 points) | 134 views

+1 vote

2 answers

6

MIME Protocol
MIME protocol works in which layer? A. Transport B. Session C. Presentation D. Application

answered 16 hours ago in Computer Networks by Nitesh Choudhary Junior (915 points) | 55 views

0 votes

3 answers

7

ISI2015-CS-4a
Consider the use of Cyclic Redundancy Code (CRC) with generator polynomial $G(x)$ for error detection. Recall that error detection with a CRC works by appending the CRC value to the bit sequence to make it a multiple of $G(x)$. Calculate the CRC ... error of length 5 in such a way that the error cannot be detected by the CRC with the $G(x)$ given above.

answered 16 hours ago in Computer Networks by vamp_vaibhav (399 points) | 220 views

+6 votes

3 answers

8

GATE2006-46
Station A needs to send a message consisting of 9 packets to Station B using a sliding window (window size 3) and go-back-n error control strategy. All packets are ready and immediately available for transmission. If every 5th packet that A transmits ... lost), then what is the number of packets that A will transmit for sending the message to B? 12 14 16 18

answered 1 day ago in Computer Networks by Prateek Raghuvanshi (25 points) | 2.6k views

0 votes

2 answers

9

Ethernet
What is the maximum theoretical percent utilization in a 802.3 LAN (that uses 10 base 5 cable) with 128 stations connected to five 500 meter segments. The data rate is 10 Mbps. Assume the frame size is 256 bytes and standard slot time is 51.2 μsec. (A) 70% (B) 90% (C) 80% (D) 60%

answered 1 day ago in Computer Networks by Bikram Veteran (26.6k points) | 100 views

0 votes

3 answers

10

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.

answered 1 day ago in Computer Networks by Nitesh Choudhary Junior (915 points) | 31 views

0 votes

2 answers

11

Subnetting

answered 1 day ago in Computer Networks by Nitesh Choudhary Junior (915 points) | 58 views

0 votes

5 answers

12

A host with IP address 10.100.100.100 wants to use loopback testing,WHAT are the source and destination addresses?

answered 2 days ago in Computer Networks by abhishek14893 (307 points) | 549 views

+1 vote

3 answers

13

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.

answered 2 days ago in Computer Networks by nailwalhimanshu (15 points) | 28 views

0 votes

1 answer

14

Testing Connectivity/LoopBack Address

answered 2 days ago in Computer Networks by abhishek14893 (307 points) | 76 views

+1 vote

1 answer

15

Which device have Exactly one i/p address? (Work Station,Router,Gateway can have more than one i/p)

answered 3 days ago in Computer Networks by Bikram Veteran (26.6k points) | 171 views

0 votes

1 answer

16

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

answered 3 days ago in Computer Networks by Kantikumar Loyal (3.3k points) | 31 views

0 votes

1 answer

17

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

answered 3 days ago in Computer Networks by Niraj Singh 2 Active (1.3k points) | 33 views

0 votes

1 answer

18

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

answered 3 days ago in Computer Networks by Rupendra Choudhary Active (1.3k points) | 51 views

+4 votes

3 answers

19

GATE2006-5
For which one of the following reasons does internet protocol(IP) use the time-to-live(TTL) field in IP datagram header? Ensure packets reach destination within that time Discard packets that reach later than that time Prevent packets from looping indefinitely Limit the time for which a packet gets queued in intermediate routers

answered 4 days ago in Computer Networks by Neeraj7375 (423 points) | 490 views

0 votes

2 answers

20

class c network subnet problem
A class c n/w has been connected to a router with mask 255.255.255.49. a packet with ip 195.200.180.173 arrived at router.find the no of subnet in the network.

answered 5 days ago in Computer Networks by abhishek14893 (307 points) | 118 views

+1 vote

2 answers

21

Calculating link utilization in stop and wait protocol

answered 6 days ago in Computer Networks by Vishal Goyal Active (1.6k points) | 515 views

0 votes

1 answer

22

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) ?

answered 6 days ago in Computer Networks by Jatin18 (47 points) | 34 views

0 votes

1 answer

23

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

answered 6 days ago in Computer Networks by Rupendra Choudhary Active (1.3k points) | 30 views

0 votes

1 answer

24

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?

answered Jun 15 in Computer Networks by Satyajeet Singh (289 points) | 22 views

0 votes

1 answer

25

#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

answered Jun 15 in Computer Networks by Satyajeet Singh (289 points) | 15 views

0 votes

1 answer

26

#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 ??

answered Jun 15 in Computer Networks by Satyajeet Singh (289 points) | 22 views

+4 votes

3 answers

27

GATE2004-IT-83
A 20 Kbps satellite link has a propagation delay of 400 ms. The transmitter employs the "go back n ARQ" scheme with n set to 10. Assuming that each frame is 100 bytes long, what is the maximum data rate possible? 5 Kbps 10 Kbps 15 Kbps 20 Kbps

answered Jun 15 in Computer Networks by Bad_Doctor (121 points) | 863 views

+3 votes

3 answers

28

GATE2006-45
Two computers C1 and C2 are configured as follows. C1 has IP address 203.197.2.53 and netmask 255.255.128.0. C2 has IP address 203.197.75.201 and netmask 255.255.192.0. Which one of the following statements is true? C1 and C2 both ... C2 is on same network, but C2 assumes C1 is on a different network C1 and C2 both assume they are on different networks.

answered Jun 15 in Computer Networks by shaum09 (15 points) | 849 views

0 votes

1 answer

29

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?

answered Jun 15 in Computer Networks by ssinghmy (143 points) | 32 views

0 votes

2 answers

30

Optimal Window Size
In optimal window size for sender or for finding the maximum window size of sender N, do we consider N=1+2a or N=a. Where a=(propagation time/Transmission time)? For max efficiency: n*Tt should be equal to Tt+2Tp. ie n=1+2a. But in some places it is just n=2a.

answered Jun 14 in Computer Networks by Vishal Goyal Active (1.6k points) | 141 views

+1 vote

2 answers

31

confused somebody please tell this Dijkstra

answered Jun 14 in Computer Networks by Arnab Bhadra Loyal (3.1k points) | 72 views

0 votes

1 answer

32

computer network

answered Jun 14 in Computer Networks by Saikat (273 points) | 24 views

+1 vote

4 answers

33

GATE2017-1-44
In a RSA cryptosystem, a participant $A$ uses two prime numbers $p = 13$ and $q = 17$ to generate here public and private keys. If the public key of $A$ is $35$, then the private key of $A$ is __________ .

answered Jun 14 in Computer Networks by Aghori Loyal (3.5k points) | 939 views

0 votes

1 answer

34

slotted aloha
measurements of a slotted aloha channel shows that 20% of slots are idle. 1.what is normalized total traffic in channel? 2.what is normalized throughput?

answered Jun 14 in Computer Networks by Shifa (11 points) | 101 views

+1 vote

1 answer

35

How much bandwidth is required to send 132 voice-grade channels by FDM on an international satellite system

answered Jun 13 in Computer Networks by Neeraj7375 (423 points) | 214 views

+2 votes

1 answer

36

Tanenbaum
A datagram network allows routers to drop packets whenever they need to. The probability of a router discarding a packet is p. Consider the case of a source host connected to the source router, which is connected to the destination router, and ... (a) hops a packet makes per transmission? (b) transmissions a packet makes? (c) hops required per received packet?

answered Jun 12 in Computer Networks by Vishal Goyal Active (1.6k points) | 135 views

0 votes

1 answer

37

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

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

0 votes

2 answers

38

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

answered Jun 11 in Computer Networks by Bad_Doctor (121 points) | 127 views

0 votes

0 answers

39

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

0 votes

1 answer

40

#IPV6
Neighbour solicitation is used for which purpose

answered Jun 10 in Computer Networks by Rupendra Choudhary Active (1.3k points) | 24 views

Recent questions and answers in Computer Networks

Recent Posts

Recent Blog Comments