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Author(s) Olivier Bonaventure
Deadline Καμία προθεσμία
Submission limit No limitation

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Traffic pattern for token bucket

A token bucket will accept a specific traffic pattern.

Question 1: token bucket
Consider a token bucket that uses the following parameters :
  • Rate = 500 kbps
  • burst = 1000 bits

The token bucket is connected to a 1 Mbps link and it receives a series of packets. Each packet has a size of 1000 bits and the delay between two successive packets on the input link is 1 msec. A dot (.) in the traffic pattern corresponds to a 1 msec period without any packet. Each letter identifies a packet.

If the token bucket receives the traffic pattern below, list the packets that will be accepted by the token bucket (assume that the rightmost packet is the first received packet):

vurqponmlkjihgfedcba

If a packet has not been accepted then replace its character with a . in your answer. For example, if only every fifth character is accepted, then your answer should be ..p....k....f....a

Question 2: token bucket
Consider a token bucket that uses the following parameters :
  • Rate = 250 kbps
  • burst = 2000 bits

The token bucket is connected to a 1 Mbps link and it receives a series of packets. Each packet has a size of 1000 bits and the delay between two successive packets on the input link is 1 msec. A dot (.) in the traffic pattern corresponds to a 1 msec period without any packet. Each letter identifies a packet.

If the token bucket receives the traffic pattern below, list the packets that will be accepted by the token bucket (assume that the rightmost packet is the first received packet):

vurqponmlkjihgfedcba

If a packet has not been accepted then replace its character with a . in your answer. For example, if only every fifth character is accepted, then your answer should be ....p....k....f....a