EBK COMPUTER NETWORKING
7th Edition
ISBN: 8220102955479
Author: Ross
Publisher: PEARSON
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Expert Solution & Answer
Chapter 9, Problem P21P
Explanation of Solution
Need for the Leaky bucket specification (r, b) to wait:
“No”, the packet flow that conform the leaky bucket specification need not have to wait at the leaky bucket policer with the parameters r and b.
Reason:
- Consider the packet that is transmitted into the network.one packet requires one token for being transmitted.
- The flow that is conforms the leaky bucket will never need to wait...
Expert Solution & Answer
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Students have asked these similar questions
8. Consider the leaky bucket policer that polices the average rate and burst size of a
packet flow. We now want to police the peak rate, p, as well. Show how the output
of this leaky bucket policer can be fed into a second leaky bucket policer so that the
two leaky buckets in series police the average rate, peak rate, and burst size. Be sure
to give the bucket size and token generation rate for the second policer.
MCQ
1.Suppose 4 packets are received in a burst at a token bucket shaper, which has 1 token in the bucket at the time of arrival (t=0).
Tokens are refilled at the rate of 1 token per 5 time units, with the first of the (new) tokens arriving at time t=2.
Assume that the shaping buffer is very large.
At what times are the packets eventually transmitted?
Choose the most appropriate response. The choices list the scheduling times of the packets in order (packet 1, packet 2, packet 3, packet 4).
A:2, 7, 12, 17
B:5, 10, 15, 20
C:0, 2, 7, 12
D: 0, 5, 10, 15
In the generic SR protocol, the sender transmits a message as soon as it is available (if it is in the window) without waiting for an acknowledgment. Suppose now that we want an SR protocol that sends messages two at a time. That is, the sender will send a pair of messages and will send the next pair of messages only when it knows that both messages in the first pair have been received correctly.Supposethat the channel may lose messages but will not corrupt or reorder messages.
i) Outline an error-control protocol for the unidirectional rdt of messages.
ii) Give an FSM description of the sender and receiver.
iii) Describe the format of the packets sent between sender and receiver and vice versa.
iv) If you use any procedure calls other than those in SR protocol (for example, udt_send(), start_timer(), rdt_rcv(), and so on),clearly state their actions.
v) Give an example (a timeline trace of sender and receiver) showing how your protocol recovers from a lost packet
Chapter 9 Solutions
EBK COMPUTER NETWORKING
Ch. 9 - Prob. R1RQCh. 9 - Prob. R2RQCh. 9 - Prob. R3RQCh. 9 - Prob. R4RQCh. 9 - Prob. R5RQCh. 9 - Prob. R6RQCh. 9 - Prob. R7RQCh. 9 - Prob. R8RQCh. 9 - Prob. R9RQCh. 9 - Prob. R10RQ
Ch. 9 - Prob. R11RQCh. 9 - Prob. R12RQCh. 9 - Prob. R13RQCh. 9 - Prob. P1PCh. 9 - Prob. P2PCh. 9 - Prob. P3PCh. 9 - Prob. P4PCh. 9 - Prob. P5PCh. 9 - Prob. P6PCh. 9 - Prob. P7PCh. 9 - Prob. P8PCh. 9 - Prob. P9PCh. 9 - Prob. P10PCh. 9 - Prob. P11PCh. 9 - Prob. P12PCh. 9 - Prob. P13PCh. 9 - Prob. P14PCh. 9 - Prob. P15PCh. 9 - Prob. P16PCh. 9 - Prob. P17PCh. 9 - Prob. P18PCh. 9 - Prob. P19PCh. 9 - Prob. P20PCh. 9 - Prob. P21PCh. 9 - Prob. P22P
Knowledge Booster
Similar questions
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