Recent questions tagged network-flow

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Kurose and Ross Edition 6 Exercise 1 Question P28 (Page No 76)
Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 2 Mbps. Suppose the propagation speed over the link is $2.5 10^8$meters/sec. How long does it take to send the file ... the preceding one is acknowledged. How long does it take to send the file? Compare the results from (a) and (b).

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 17 views

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Kurose and Ross Edition 6 Exercise 1 Question P27 (Page No 76)
Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 1Gbps. Suppose the propagation speed over the link is $ 2.5 10^8$ ... bits that will be in the link at any given time? What is the width (in meters) of a bit in the link?

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 16 views

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Kurose and Ross Edition 6 Exercise 1 Question P26 (Page No 76)
Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 2 Mbps. Suppose the propagation speed over the link is 2.5×1082.5×108 meters/sec. suppose we can modify R. For what value of R is the width of a bit as long as the length of the link?

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 9 views

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Kurose and Ross Edition 6 Exercise 1 Question P29 (Page No 76)
Suppose there is a 10 Mbps microwave link between a geostationary satellite and its base station on Earth. Every minute the satellite takes a digital photo and sends it to the base station. Assume a propagation speed of ... the size of the photo. What is the minimum value of x for the microwave link to be continuously transmitting?

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 13 views

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Kurose and Ross Edition 6 Exercise 1 Question P25 (Page No 76)
.Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 2 Mbps. Suppose the propagation speed over the link is $2.5 \times 10^8$ meters/sec. Calculate the bandwidth-delay ... width of a bit in terms of the propagation speed s, the transmission rate R, and the length of the link m.

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 20 views

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Kurose and Ross Edition 6 Exercise 1 Question P13 (Page No 73)
Suppose N packets arrive simultaneously to a link at which no packets are currently being transmitted or queued. Each packet is of length L and the link has transmission rate R. What is the average queuing delay for the N packets? ... N such packets arrive to the link every LN/R seconds. What is the average queuing delay of a packet?

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 10 views

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Kurose and Ross Edition 6 Exercise 1 Question P12 (Page No 73)
A packet switch receives a packet and determines the outbound link to which the packet should be forwarded. When the packet arrives, one other packet is halfway done being transmitted on this outbound link and four other ... bits of the currently-being-transmitted packet have been transmitted, and n packets are already in the queue?

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 27 views

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Kurose and Ross Edition 6 Exercise 1 Question P10, P11 (Page No 73)
(Common data question P10, P11) P10. Consider a packet of length L which begins at end system A and travels over three links to a destination end system. These three links are connected by two packet switches. Let ... transmits each bit it receives before waiting for the entire packet to arrive. What is the end-to-end delay?

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 8 views

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Kurose and Ross Edition 6 Exercise 1 Question P8 (Page No 72)
Suppose users share a 3 Mbps link. Also, suppose each user requires 150 kbps when transmitting, but each user transmits only 10 percent of the time. When circuit switching is used, how many users can be supported? ... (Hint: Use the binomial distribution.) Find the probability that there are 21 or more users transmitting simultaneously.

asked Apr 10 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 11 views

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Kurose and Ross Edition 6 Exercise 1 Question P6 (Page No 72)
This elementary problem begins to explore propagation delay and transmission delay, two central concepts in data networking. Consider two hosts, A and B, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, ... bits, and R = 56 kbps. Find the distance mso that $d _{prop}$ equals $d _{trans}$.

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 13 views

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Kurose and Ross Edition 6 Exercise 1 Question P2 (Page No 71)
Give a formula for the end-to-end delay of sending one packet of length L over N links of transmission rate R. Generalize this formula for sending P such packets back-to-back over the N links.

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 14 views

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Kurose and Ross Edition 6 Exercise 1 Question R21 (Page No 70)
Visit the Queuing and Loss applet at the companion Web site. What is the maximum emission rate and the minimum transmission rate? With those rates, what is the traffic intensity? Run the applet with these rates and determine how ... determine again how long it takes for packet loss to occur. Are the values different? Why or why not?

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 14 views

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Kurose and Ross Edition 6 Exercise 1 Question R19 (Page No 69)
Suppose Host A wants to send a large file to Host B. The path from Host A to Host B has three links, of rates R1 = 500 kbps, R2 = 2 Mbps, and R3 = 1 Mbps. Assuming no other traffic in the network, what is the throughput for ... long will it take to transfer the file to Host B? Repeat (a) and (b), but now with R2 reduced to 100 kbps.

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 8 views

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Kurose and Ross Edition 6 Exercise 1 Question R18 (Page No 69)
How long does it take a packet of length 1,000 bytes to propagate over a link of distance 2,500 km, propagation speed 2.5 · 108 m/s, and transmission rate 2 Mbps? More generally, how long does it take a packet ... s, and transmission rate R bps? Does this delay depend on packet length? Does this delay depend on the transmission rate?

asked Apr 9 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 10 views

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Andrew S. Tanenbaum Edition 5th Exercise 5 Question 23 (Page No. 492)
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 ... 8-byte frame header, and link R2-B can support a maximum frame size of 512 bytes including a 12-byte frame header

asked Mar 16 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 11 views

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Andrew S. Tanenbaum Edition 5 Exercise 4 Question 1 (Page No. 350)
Frames arrive randomly at a 100-Mbps channel for transmission. If the channel is busy when a frame arrives, it waits its turn in a queue. Frame length is exponentially distributed with a mean of 10,000 bits/frame. For each of the ... queueing time and transmission time. (a) 90 frames/sec. (b) 900 frames/sec. (c) 9000 frames/sec.

asked Mar 15 in Computer Networks by ajaysoni1924 Boss (10.3k points) | 15 views

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MadeEasy Full Length Test 2019: Computer Networks - Network Flow
Consider a source computer (S) transmitting a file of size $2 * 10^6$ bits to a destination computer (D) over a network of three routers ($R_1$, $R_2$ and $R_3$) and four links $(L_1, L_2, L_3 and L_4)$. $L_1$ connects $S$ ... and propagation delays in transmitting the file from $S$ to $D$? a. 1007 ms b. 1010 ms c. 2010 ms d 2007 ms

asked Jan 24 in Computer Networks by CSHuB (47 points) | 72 views

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MadeEasy Full Length Test 2019: Computer Networks - Network Flow
Suppose that how A is connected to a router R1, R1 is connected to another router R2 and R2 Is connected to how B. Suppose that a TCP message that contains 900 byes of data and 20 bytes of TCP header Is passed to ... about Total length, OF MF and Fragment offset fields of the header In the last packet transmitted over the link R1-R2

asked Jan 12 in Computer Networks by jatin khachane 1 Loyal (6.9k points) | 51 views

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19

TestBook Test Series: Computer Networks - Network Flow

asked Oct 17, 2018 in Computer Networks by monty Junior (835 points) | 91 views

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20

MIT assignment
A geosynchronous satellite has a half-duplex channel with a transmission rate of 10 kbps and a propagation delay of 0.25 sec each way. With a data packet size of 1000 bits and a loss probability p of 0.001 ,(A) what is the expected transmission time of ... parameters are the same as part (a), what is the longest channel propagation delay for which we can still use stop-and-wait?

asked Oct 15, 2018 in Computer Networks by sushmita Boss (16.6k points) | 153 views

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21

MadeEasy Workbook: Computer Networks - Network Flow
If two stations A and B uses copper twisted pair cable having capacity 200 bits/sec. if A transmitted 20 frames to B each of size 50 bits, Assume RTT is neglected. What is the time (in Sec) required to transmit the single frame from A to B if pipelining has been used?

asked Aug 6, 2018 in Computer Networks by Sumit Singh Chauhan Active (1.5k points) | 109 views

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22

MadeEasy Workbook: Computer Networks - Network Flow
Suppose that x bits of user data are to be transmitted over K-hop path in a packet-switched network as a series of packets each containing p data bits and h header bits with x>>(p+h). The bit rate of lines is b bps and propagation delay is ... ? (p+h) x/b bits (p+h) x/pb bits p x/b bits hx/pb bits Please tell the answer with explanation.

asked Jul 5, 2018 in Computer Networks by Sid865 (37 points) | 82 views

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1 answer

23

MadeEasy Workbook: Computer Networks - Network Flow
Consider an error-free 64-kbps satellite channel used to send 512-byte data frames in one direction , with very short acknowledgements coming back the other way. What is the maximum throughput for window sizes of 1,7,15 and 127? The earth-satellite propagation time is 270 msec.

asked Jul 5, 2018 in Computer Networks by Sid865 (37 points) | 73 views

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MadeEasy Test Series 2018: Computer Networks - Network Flow
my approach is 1 <= Td(x)/(Td+2Tp), x is size of SW then the answer wil be - ceil(log x) Is my approach is correct, if not then how to solve this?

asked Jan 13, 2018 in Computer Networks by charul Junior (799 points) | 61 views

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25

MadeEasy Test Series: Computer Networks - Network Flow

asked Jan 2, 2018 in Computer Networks by MIRIYALA JEEVAN KUMA Active (2.3k points) | 42 views

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3 answers

26

FLOW CONTROL CN

asked Nov 6, 2017 in Computer Networks by Parshu gate Active (3.1k points) | 180 views

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27

FLOW CONTROL
Consider three nodes A B, C connected in series. Node A is connected to Node B via 3 Gbps link, 500 km length. Node B is connected to Node C via 60 Mbps link, 15 km length. The links are full duplex, but no other traffic on the links. A large file is ... . Assume velocity of propagation as $2 \times 10^8$ m/sec. What is the round trip time?______ msec (correct to two decimal points).

asked Nov 5, 2017 in Computer Networks by Parshu gate Active (3.1k points) | 93 views

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2 answers

28

Flow control
In flow control, the timer used is started when the transmission of the packet starts or when the last bit of the packet is transmitted? Any questions in flow control related to the timer?

asked May 23, 2017 in Computer Networks by prasoon raghav Junior (535 points) | 278 views

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1 answer

29

MadeEasy Workbook: Computer Networks - Network Flow
An upper layer packet is split into 10 frames each of which has an 80% chance of arriving undamaged.if no error control is done by the data link protocol ,how many times must the message be sent on average to get the entire thing through?

asked Mar 31, 2017 in Computer Networks by Jai | 180 views

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1 answer

30

Computer networks colloison domain
What is number of colloision domains in following devices with x-interface??? A) Switch B) Hub C) Router D) Repeater E) Bridge E) Gateway

asked Feb 7, 2017 in Computer Networks by Rahul Jain25 Boss (11k points) | 214 views

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