Show a lost acknowledgment (not a lost packet) and the recovery from it in the Stop-and-Wait...
Show a lost acknowledgment (not a lost packet) and the recovery from it in the Stop-and-Wait protocol
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Show a lost acknowledgment (not a lost packet)
and the recovery from it in the Stop-and-Wait...
Performance of Stop and wait protocol (1) Performance of Stop-and-wait protocol Consicder a DCsysicrm rurning Stop...
Performance of Stop and wait protocol
(1) Performance of Stop-and-wait protocol Consicder a DCsysicrm rurning Stop rii wwaii proioco ith the: followin parameters H>Packet size is 1250 bytes including 25 bytes of overhead <ACK packets are 25 bytes long > Channel capacity (speed) is 1Mbps (Mega bits/sec) <#> Propagation delays 0.5ms <H> Ignore the processing delay at both Tx & Rx <a> Calculate the channel efficiency [3 pt <b> Re do part cas for propagation delay of!ims !iOms l4pi do...
a. In case of rdt 3.0 Stop and Wait, suppose we send a packet of 1KB...
a. In case of rdt 3.0 Stop and Wait, suppose we send a packet of 1KB through 1 Gbps link and RTT=20 msec. Find the sender utilization? Find the sender throughput? b. Now if the sender is allowed to send five packets without waiting for acknowledgement of first packet (pipelined operation), Find utilization and throughput of sender.
1. (1 pt) Under what conditions would an open-loop protocol such as an error-correcting Hamming code...
1. (1 pt) Under what conditions would an open-loop protocol such as an error-correcting Hamming code be preferable to the feedback type protocols discussed in Chapter 3? 2. (1 pt) Suppose that a stop-and-wait protocol was used on a channel has a 300 millisecond propagation delay and sender frames sizes of 100 milliseconds. The receiver must fully receive the frame before sending an acknowledgment. The size of the acknowledgment can be ignored. What is the channel utilization? 3. (1 pt)...
The objective of this exercise is to realize high distance and high bandwidth affect the performance of stop and wait....
The objective of this exercise is to realize high distance and high bandwidth affect the performance of stop and wait. The distance from Earth to a distant planet is approximately 9 x 10 km. Assume that the frame size is 32 KB and the speed of light is 3 108 m/s. Assume that the bit rate is 32 Mbps a) (5 points) What is the efficiency (channel utilization) if a stop-and-wait protocol is used? b) (15 points) Suppose we use...
, or losing a data packet and packet losses are independent events A lost packet must...
, or losing a data packet and packet losses are independent events A lost packet must be resert Rond your answers to fordernal places (·g. 98 7654). (a) What is the probability that an e-mail message with 100 packets will need any resent? (b) What is the probability that an e-mail message with 3 packets will need exactly one to be resent (c) If 10 e-mail are sent, each with 100 packets, what is the probability that at least one...
Which of the following is NOT true about packet loss? a. The fraction of lost packets...
Which of the following is NOT true about packet loss? a. The fraction of lost packets decreases as traffic intensity increases. b. A packet arriving in a full queue will be dropped or lost. c. The queue that is preceding the link in buffer has a finite capacity. d. A lost packet may be retransmitted by a previous node.
Problem 2. Sender Utilization (20 pt.) Assume stop-and-wait, 100 Mbps link, 10 ms propagation delay, 10,000...
Problem 2. Sender Utilization (20 pt.) Assume stop-and-wait, 100 Mbps link, 10 ms propagation delay, 10,000 bit packet. Calculate sender utilization. Assume pipelining and 20 packets can be sent without ACK, 100 Mbps link, 10 ms propagation delay, 10,000 bit packet. Calculate sender utilization.
Fill the table below to answer the following question: List three alternatives for recovery from packet...
Fill the table below to answer the following question: List three alternatives for recovery from packet loss in VoIP, and for each alternative, give an example case when it will not work. NOTE: you must select the table, copy, then past in the answer area. Then fill the table. Recovery Approach; Case when it doesn't work i.e. give the name of the approach ; describe the case in one or two sentences maximum. WNO
A byte-oriented stop and wait protocol uses frames of 143 bytes and acknowledgements of 4 bytes. ...
A byte-oriented stop and wait protocol uses frames of 143 bytes and acknowledgements of 4 bytes. The processing delays at the sender and receiver are 2.6 μs. The physical layer operates at 27 Mbit/s over a cable of length 14.0 km, on which signals travel at two-thirds the speed of light. What is the cycle time (the time from the start of transmission of a frame to the start of transmission of the next frame)? Give your answer in μs,...
Data communications requires at least two devices working together, one to send and one to receive. Data Link Layer are...
Data communications requires at least two devices working together, one to send and one to receive. Data Link Layer are responsible for creating frames, flow control and error control. In the transmission of frame, we can have four situations: normal operation, the frame is lost, the acknowledgment is lost, or the acknowledgment is delayed. For the above reason, FRAMES from a sending station are numbered sequentially. Find the explanation of Stop-And-Wait ARQ of data link control. Please answer this question...
Performance of Stop and wait protocol
(1) Performance of Stop-and-wait protocol Consicder a DCsysicrm rurning Stop rii wwaii proioco ith the: followin parameters H>Packet size is 1250 bytes including 25 bytes of overhead <ACK packets are 25 bytes long > Channel capacity (speed) is 1Mbps (Mega bits/sec) <#> Propagation delays 0.5ms <H> Ignore the processing delay at both Tx & Rx <a> Calculate the channel efficiency [3 pt <b> Re do part cas for propagation delay of!ims !iOms l4pi do...
1. (1 pt) Under what conditions would an open-loop protocol such as an error-correcting Hamming code be preferable to the feedback type protocols discussed in Chapter 3? 2. (1 pt) Suppose that a stop-and-wait protocol was used on a channel has a 300 millisecond propagation delay and sender frames sizes of 100 milliseconds. The receiver must fully receive the frame before sending an acknowledgment. The size of the acknowledgment can be ignored. What is the channel utilization? 3. (1 pt)...
The objective of this exercise is to realize high distance and high bandwidth affect the performance of stop and wait. The distance from Earth to a distant planet is approximately 9 x 10 km. Assume that the frame size is 32 KB and the speed of light is 3 108 m/s. Assume that the bit rate is 32 Mbps a) (5 points) What is the efficiency (channel utilization) if a stop-and-wait protocol is used? b) (15 points) Suppose we use...
, or losing a data packet and packet losses are independent events A lost packet must be resert Rond your answers to fordernal places (·g. 98 7654). (a) What is the probability that an e-mail message with 100 packets will need any resent? (b) What is the probability that an e-mail message with 3 packets will need exactly one to be resent (c) If 10 e-mail are sent, each with 100 packets, what is the probability that at least one...
Fill the table below to answer the following question: List three alternatives for recovery from packet loss in VoIP, and for each alternative, give an example case when it will not work. NOTE: you must select the table, copy, then past in the answer area. Then fill the table. Recovery Approach; Case when it doesn't work i.e. give the name of the approach ; describe the case in one or two sentences maximum. WNO
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