Recent questions and answers in Computer Networks

0 votes

1 answer

1

Fragmentation of packet
Which of the following statements are True ?

answered 10 hours ago in Computer Networks by noob_coder (261 points) | 156 views

0 votes

0 answers

2

Computer Networks -email
How will you send an e-mail to someone when you have neither the recipient's e-mail address nor the e-mail application.

asked 1 day ago in Computer Networks by shraddha priya Active (3.8k points) | 25 views

+2 votes

2 answers

3

Virtual Gate Test Series: Computer Networks - Distance Vector Routing Algorithm
Consider a router is working based on the Distance Vector Routing Algorithm. Consider the five-node network of the following figure. Assume all nodes building distance from that node to $A$ (number of hops) and after initial set up, suddenly either $A$ goes down ... $(C) B - 4, C - 5, D - 4, E - 5$ $(D)$ None

answered 1 day ago in Computer Networks by Ram Swaroop Active (2.6k points) | 218 views

0 votes

0 answers

4

networks TCP
Calculate the effective throughput for transferring a 1000 KB file assuming TCP using slow start congestion control technique. Given the round trip time 100 ms, and maximum segment size is 1460 bytes. Assume there are no losses and both the bandwidth and the receiver window size is infinite. (A) 5MBPS (B) 10Mbps (C) 1MBPS (D) 1Mbps

asked 1 day ago in Computer Networks by pradeepchaudhary Active (1.2k points) | 25 views

0 votes

1 answer

5

Andrew S. Tanenbaum Edition 5 Exercise 4 Question 6 (Page No. 351)
What is the length of a contention slot in CSMA/CD for (a) a 2-km twin-lead cable (signal propagation speed is 82% of the signal propagation speed in vacuum)?, and (b) a 40-km multimode fiber optic cable (signal propagation speed is 65% of the signal propagation speed in vacuum)?

answered 2 days ago in Computer Networks by pradeepchaudhary Active (1.2k points) | 34 views

0 votes

1 answer

6

Andrew S. Tanenbaum Edition 5th Exercise 4 Question 20 (Page No. 352)
How many frames per second can gigabit Ethernet handle? Think carefully and take into account all the relevant cases. Hint: the fact that it is gigabit Ethernet matters.

answered 2 days ago in Computer Networks by pradeepchaudhary Active (1.2k points) | 12 views

0 votes

1 answer

7

Andrew S. Tanenbaum Edition 5 Exercise 4 Question 3 (Page No. 351)
Consider the delay of pure ALOHA versus slotted ALOHA at low load. Which one is less? Explain your answer.

answered 2 days ago in Computer Networks by noob_coder (261 points) | 12 views

0 votes

4 answers

8

UGCNET-June2014-II-01
Infrared signals can be used for short range communication in a closed area using _______ propagation. Ground Sky Line of sight Space

answered 4 days ago in Computer Networks by tbabu (11 points) | 2.1k views

0 votes

1 answer

9

Kurose and Ross Edition 6 Exercise 1 Question R25 (Page No 70)
Which layers in the Internet protocol stack does a router process? Which layers does a link-layer switch process? Which layers do a host process?

answered 5 days ago in Computer Networks by noob_coder (261 points) | 25 views

0 votes

0 answers

10

Made Easy Test Series: Computer Network-Dijkstra Algo
Consider Dijkstra's algorithm in linked state routing protocol at node $u.$ Professor Ram first sets the route for each directly connected node $v.$ to be the link connecting $u$ to $v.$ Ram then implements the rest of the algorithm ... costs where all routing table entry will be correct. $D)$ Both $A)$ and $B)$ How Dijkstra working here?

asked May 14 in Computer Networks by srestha Veteran (114k points) | 22 views

0 votes

0 answers

11

ISI2018-PCB-B9
The data link layer uses a fixed-size sliding window protocol, where the window size for the connection is equal to twice the bandwidth-delay product of the network path. Consider the following three scenarios, in each of which only the given parameter changes as specified (no ... minimum value of the round trip time $R$ increases to $1.8R$; the window size $W$ decreases to $W/3$

asked May 12 in Computer Networks by akash.dinkar12 Boss (40.6k points) | 20 views

0 votes

1 answer

12

Kurose and Ross Edition 6 Exercise 3 Question R12 (Page No 286)
Visit the Go-Back-N Java applet at the companion Web site. Have the source send five packets, and then pause the animation before any of the five packets reach the destination. Then kill the first packet and ... destination and kill the first acknowledgment. Describe again what happens. Finally, try sending six packets. What happens?

answered May 11 in Computer Networks by Bikki_gupta (59 points) | 15 views

+2 votes

3 answers

13

UGCNET-Dec2014-II-30
How many distinct stages are there in $DES$ algorithm, which is parameterized by a $56$-bit key ? $16$ $17$ $18$ $19$

answered May 11 in Computer Networks by Adnan Ashraf (267 points) | 1.7k views

+1 vote

1 answer

14

Self Doubt :Bit Stuffing
End delimeter is → 0111 data to be sent 0111111111. What is the data we should send to the reciever?

answered May 11 in Computer Networks by Bikki_gupta (59 points) | 90 views

+1 vote

2 answers

15

UGCNET-June2015-II-26
Which of the following protocols is an application layer protocol that establishes, manages and terminates multimedia sessions? Session Maintenance Protocol Real-time Streaming Protocol Real-time Transport Control Protocol Session Initiation Protocol

answered May 11 in Computer Networks by Adnan Ashraf (267 points) | 739 views

+2 votes

2 answers

16

testS
The round trip delay between X and Y is given as 60 ms and bottle neck bandwidth of link between X and Y is 512 KBps. What is the optimal window size (in packets) if the packet size is 64 bytes and channel is full duplex

answered May 10 in Computer Networks by ankitron (77 points) | 393 views

+2 votes

2 answers

17

UGCNET-Dec2015-II-40
Which of the following is not a congestion policy at network layer? Flow Control Policy Packet Discard Policy Packet Lifetime Management Policy Routing Algorithm

answered May 9 in Computer Networks by Adnan Ashraf (267 points) | 877 views

+3 votes

2 answers

18

UGCNET-June2016-II-28
In TCP/IP reference model, the job of ____ layer is to permit hosts to inject packets into any network and travel them independently to the destination Physical Transport Application Host-to-network

answered May 9 in Computer Networks by Adnan Ashraf (267 points) | 2.1k views

+3 votes

3 answers

19

UGCNET-June2016-II-30
Optical fiber uses reflection to guide light through a channel, in which angle of incidence is ____ the critical angle equal to less than greater than less than or equal to

answered May 9 in Computer Networks by Adnan Ashraf (267 points) | 1.3k views

0 votes

1 answer

20

Andrew S. Tanenbaum Edition 5th Exercise 3 Question 33 (Page No. 254)
Compute the fraction of the bandwidth that is wasted on overhead (headers and retransmissions) for protocol selective repeat on a heavily loaded 50-kbps satellite channel with data frames consisting of 40 header and 3960 data bits. ... frames is 1%, and the error rate for NAK frames is negligible. The sequence numbers are 8 bits.

answered May 8 in Computer Networks by diwekomal (11 points) | 18 views

0 votes

2 answers

21

Bit stuffing
A message M = 11111111 after bit stuffing with End delimeter as 111 will be sent as____________?

answered May 5 in Computer Networks by Bikki_gupta (59 points) | 112 views

0 votes

2 answers

22

#bit stuffing

answered May 5 in Computer Networks by Bikki_gupta (59 points) | 147 views

0 votes

1 answer

23

UPPCL AE 2018:40

answered May 3 in Computer Networks by Abhisek Tiwari 4 Active (4.7k points) | 22 views

+2 votes

2 answers

24

UGCNET-AUG2016-II-27
In a fast Ethernet cabling, $100$ Base-$TX$ uses ______ cable and maximum segment size is ______. Twisted pair, $100$ metres Twisted pair, $200$ metres Fibre optics, $1000$ metres Fibre optics, $2000$ metres

answered May 2 in Computer Networks by Adnan Ashraf (267 points) | 316 views

+2 votes

1 answer

25

Token Ring
Is token ring there in gate 2018 syllabus ?

answered May 2 in Computer Networks by Rishu vishwakarma (11 points) | 872 views

+25 votes

8 answers

26

GATE2014-3-28
An $IP$ router with a $\text{Maximum Transmission Unit (MTU)}$ of $1500$ bytes has received an $IP$ packet of size $4404\text{ bytes}$ with an $IP$ header of length $20\text{ bytes}$. The values of the relevant fields in the header of the third $IP$ fragment generated ... $1,$ Datagram Length$: 1500;$ Offset$: 370$ $\text{MF bit}$: $0,$ Datagram Length$: 1424;$ Offset$: 2960$

answered Apr 29 in Computer Networks by Utkarsh Pathak (211 points) | 5.7k views

0 votes

0 answers

27

Pgee mock exam

asked Apr 23 in Computer Networks by Dipanshu Rana (383 points) | 25 views

+3 votes

5 answers

28

UGCNET-Dec2015-III-14
In electronic mail, which of the following protocols allows the transfer of multimedia messages? IMAP SMTP POP 3 MIME

answered Apr 22 in Computer Networks by kavikeve Junior (513 points) | 1.1k views

+1 vote

2 answers

29

MadeEasy Test Series: Computer Networks - Network Layering
Consider the following statements with respect to application layer: S1 : Datagram is the PDU (Protocol data unit) used. S2 : There is a fixed limit on the maximum size of data that it can pass on the TCP layer. Which of the following options is ... A Only S1 is true B Only S2 is true C Both S1 and S2 are true D Neither of S1 or S2 is true

answered Apr 21 in Computer Networks by aasia (69 points) | 135 views

+19 votes

3 answers

30

GATE2015-3-38
In the network $200.10.11.144/27$, the $fourth$ octet (in decimal) of the last $IP$ address of the network which can be assigned to a host is _____.

answered Apr 21 in Computer Networks by Utkarsh Pathak (211 points) | 3.9k views

0 votes

0 answers

31

Made Easy Test Series: Computer Network-ICMP
Consider a very large network $10000$ routers. Two host $A$ and $B$ connected with this network. Host $A$ sends a data to host $B$. and after some unit of time host $A$ receives $ICMP$ time exceed message for the samedata ... some ICMP message generated? Say if $ICMP$ message generated in $9999th$ router, then where it give error of time exceed message?

asked Apr 20 in Computer Networks by srestha Veteran (114k points) | 100 views

+21 votes

7 answers

32

GATE2015-3-28
Consider a network connecting two systems located $8000$ $\text{Km}$ apart. The bandwidth of the network is $500 \times 10^6$ $\text{bits}$ per second. The propagation speed of the media is $4 \times 10^6$ $\text{meters}$ per second. It ... capacity. Assume that processing delays at nodes are negligible. Then, the minimum size in bits of the sequence number field has to be ______.

answered Apr 20 in Computer Networks by Utkarsh Pathak (211 points) | 3.9k views

+24 votes

3 answers

33

GATE2015-3-22
Consider the following statements. TCP connections are full duplex TCP has no option for selective acknowledgement TCP connections are message streams Only I is correct Only I and III are correct Only II and III are correct All of I, II and III are correct

answered Apr 20 in Computer Networks by Utkarsh Pathak (211 points) | 3.2k views

+19 votes

5 answers

34

GATE2015-2-8
A link has transmission speed of $10^6$ bits/sec. It uses data packets of size $1000$ $\text{bytes}$ each. Assume that the acknowledgment has negligible transmission delay and that its propagation delay is the same as the data propagation delay. Also, assume ... $\text{%}$. The value of the one way propagation delay (in milliseconds) is_____.

answered Apr 20 in Computer Networks by Utkarsh Pathak (211 points) | 3.5k views

+26 votes

5 answers

35

GATE2016-2-55
Consider a $128 \times 10^3$ bits/second satellite communication link with one way propagation delay of $150$ milliseconds. Selective retransmission (repeat) protocol is used on this link to send data with a frame size of $1$ kilobyte. Neglect the ... of acknowledgement. The minimum number of bits required for the sequence number field to achieve $100 \%$ utilization is ________.

answered Apr 19 in Computer Networks by Utkarsh Pathak (211 points) | 6.4k views

0 votes

0 answers

36

Kurose and Ross Edition 6 Exercise 3 Question R18 (Page No 288)
True or false? Consider congestion control in TCP. When the timer expires at the sender, the value of ssthresh is set to one half of its previous value.

asked Apr 18 in Computer Networks by ajaysoni1924 Boss (10.1k points) | 63 views

0 votes

0 answers

37

Kurose and Ross Edition 6 Exercise 3 Question R17 (Page No 287)
Suppose two TCP connections are present over some bottleneck link of rate R bps. Both connections have a huge file to send (in the same direction over the bottleneck link). The transmissions of the files start at the same time. What transmission rate would TCP like to give to each of the connections?

asked Apr 18 in Computer Networks by ajaysoni1924 Boss (10.1k points) | 29 views

0 votes

0 answers

38

Kurose and Ross Edition 6 Exercise 3 Question R15 (Page No 287)
Suppose Host A sends two TCP segments back to back to Host B over a TCP connection. The first segment has sequence number 90; the second has sequence number 110. How much data is in the first segment? Suppose that the ... segment arrives at B. In the acknowledgment that Host B sends to Host A, what will be the acknowledgment number?

asked Apr 18 in Computer Networks by ajaysoni1924 Boss (10.1k points) | 41 views

0 votes

0 answers

39

Kurose and Ross Edition 6 Exercise 3 Question R14 (Page No 287)
True or false? Host A is sending Host B a large file over a TCP connection. Assume Host B has no data to send Host A. Host B will not send acknowledgments to Host A because Host B cannot piggyback the acknowledgments ... 4 bytes of data over a TCP connection to Host B. In this same segment the acknowledgment number is necessarily 42.

asked Apr 18 in Computer Networks by ajaysoni1924 Boss (10.1k points) | 22 views

0 votes

0 answers

40

Kurose and Ross Edition 6 Exercise 3 Question R13 (Page No 287)
Visit the Selective Repeat Java applet at the companion Web site. Have the source send five packets, and then pause the animation before any of the five packets reach the destination. Then kill the first packet and resume ... what happens. Finally, try sending six packets. What happens? How selective repeat and go back-n is different?

asked Apr 18 in Computer Networks by ajaysoni1924 Boss (10.1k points) | 11 views

tags	tag:apple
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

Recent questions and answers in Computer Networks

Recent Posts

Recent Blog Comments