The transmission schedule (shown below) for a given flow lists for each second the number of packets sent between that time and the following second. The flow must stay within the bounds of a token bucket filter. Assume the bucket is initially full. What bucket depth does the flow need for a token rate of 5 packets per second? Time (seconds) Packets Sent 0 1 2 3 4 5 06 05 04 3 7 4 3 8 6 12

The transmission schedule (shown below) for a given flow lists for each second the number of packets sent between that time and the following second. The flow must stay within the bounds of a token bucket filter. Assume the bucket is initially full. What bucket depth does the flow need for a token rate of 5 packets per second? Time (seconds) Packets Sent 0 1 2 3 4 5 06 05 04 3 7 4 3 8 6 12

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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In the scenario shown in Figure below, A is sending a frame to A' and after receiving that frame, A' sends a frame back to A. Explain the steps that are carried out by A, A', and the switch to populate its table such that packets from A can be switched to A' and vice versa. A C' B 3 B' A' 5.
Path coverage is the least comprehensive coverage. True O False
The token bucket algorithm is a popular method for traffic shaping (recapthe algorithm in textbook Ch. 5.3.2). A computer uses a token bucket with a capacity of 400megabytes (MB), and a rate of 10 MB per second. The machine starts generating 20 MB persecond continuously when the bucket contains 200 MB. How long will it take to send 1000 MB?
Give outcome for given scenario:A source had sent five packets and suddenly pause the animation before those packets had reached its destination. Now kill the first packet's ACK after it reaches its destination.
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Write a program to simulate routing using ooding. Each packet should contain a counter that is decremented on each hop. When the counter gets to zero, the packet is discarded. Time is discrete, with each line handling one packet per time interval. Make three versions of this program: all lines are flooded, all lines except the input line are flooded, and only the (statically chosen) best k lines are flooded. Compare flooding with deterministic routing (k=1) in terms of both delay and the bandwidth used.
Please solve it correctly and please provide explanation of your answers. A PC and a Web Server are communicating over a TCP connection. The PC had started the three way handshake with the initial sequence number of 3069 . The Web Server's initial sequence number is 4830 . The window size of the PC is 815 bytes and the window size of the Web Server is 463 bytes. Using the third TCP handshake ack segment the PC sends the http request of the size 396 bytes to the Web Server. Then the Web Server answers with 3 segments containing the requested data. The first segment size is 42 bytes and the second segment size is 276 bytes and the third segment size is 146 bytes respectively. The PC receives all three segments within the timer. But unfortunately the second segment was corrupted. So the PC immediately sends an acknowledgement segment. Assume that the PC uses Selective Repeat/Reject ARQ. (d) What will be the window size of PC A after receiving only the first segment from webserver? (e)…
routine that updates the local node’s routing table based on a newroute is given by mergeRoute. Although not shown, a timer function periodically scans the list of routes in the node’s routing table, decrements theTTL (time to live) field of each route, and discards any routes that have atime to live of 0. Note, however, that the TTL field is reset to MAX_TTL anytime the route is reconfirmed by an update message from a neighboringnode.
Please solve it correctly and please provide explanation of your answers. A PC and a Web Server are communicating over a TCP connection. The PC had started the three way handshake with the initial sequence number of 3069 . The Web Server's initial sequence number is 4830 . The window size of the PC is 815 bytes and the window size of the Web Server is 463 bytes. Using the third TCP handshake ack segment the PC sends the http request of the size 396 bytes to the Web Server. Then the Web Server answers with 3 segments containing the requested data. The first segment size is 42 bytes and the second segment size is 276 bytes and the third segment size is 146 bytes respectively. The PC receives all three segments within the timer. But unfortunately the second segment was corrupted. So the PC immediately sends an acknowledgement segment. Assume that the PC uses Selective Repeat/Reject ARQ. (a) What will be the sequence number of the third TCP handshake signal send from PC to webserver?…
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