In fair queuing, the value F; was interpreted as a timestamp: the time when the ith packet would finish transmitting. Give an interpretation of F; for weighted fair queuing, and also give a formula for it in terms of Fi-1, arrival time Aį, packet size Pi, and weight w assigned to the flow.

In fair queuing, the value F; was interpreted as a timestamp: the time when the ith packet would finish transmitting. Give an interpretation of F; for weighted fair queuing, and also give a formula for it in terms of Fi-1, arrival time Aį, packet size Pi, and weight w assigned to the flow.

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

See similar textbooks

Similar questions

Consider the following scenario: there are four stations in the token ring, but only one packet. If station 1 retains the packet until it completes one rotation and then returns to it, what is the token waiting time? (THT)
Help
Given a M/M/1 queue, if the average inter-arrival time is Z seconds, the average packet service time is P, find: a. The probability an arriving packet has to wait in the queue b. The variance (o}) of the inter-arrival time The variance (o) of the packet service time d. The average number of packets in the system (i.e., in the queue + in the NIC) c.
Give a clear handwritten answer...In a slotted ALOHA network, suppose 0.618 is the probability that a message is successfully transmitted on an attempt. What is the average number of transmission attempts for successful delivery?
. Let A and B be two stations attempting to transmit on an Ethernet. Each has a steady queue of frames ready to send; A's frames will be numbered A1, A2, and so on, and B's similarly. Let T= 51.2 µs be the exponential backoff base unit. Suppose A and B simultaneously attempt to send frame 1, collide, and happen to choose backoff times of 0 x and 1 x T, respectively, meaning A wins the race and transmits A₁ while B waits. At the end of this transmission, B will attempt to retransmit B₁ while A will attempt to transmit A2. These first attempts will collide, but now A backs off for either 0 × T or 1 x T, while B backs off for time equal to one of 0 x T,..., 3 x T. (a) Give the probability that A wins this second backoff race immediately after this first collision; that is, A's first choice of backoff time k x 51.2 is less than B's. (b) Suppose A wins this second backoff race. A transmits A3, and when it is finished, A and B collide again as A tries to transmit A4 and B tries once more to…
If you are given, that station A wants to transmit packet number 2 according to the sequence and n = 2, at the same time station B wants to transmit packet number 1 and n = 2 Calculate and explain the probability for each station and the probability for collision. Calculate a random backoff time for both stations, in the situation of station B, has priority to transmit
Question Suppose that users Alice and Bob carry out the 3- pass Diffie-Hellman protocol with p = 101. Suppose that Alice chooses a1 = 19 and Bob chooses b1 = 13. If Alice wants to send the secret message m=5 to Bob, show all the messages exchanged between Alice and Bob
2.(a) Consider the use of OTP. Let m be an arbitrary message to be encrypted and c be a given ciphertext in the ciphertext space. How many possible keys with which m can be mapped to c, i.e., f(m,k)=c? None 1 2 The size of the key space Depends on m (b) 3^(-n) is negligible. True or false? (c) n^(-100) is negligible. True or false?
2. When senders get acknowledgment of receipt of packets, senders infer that:a. They send at rate higher than the line capacity,b. Senders are sending at rate lower than the line capacity,c. The packets have been dropped,d. The packets are not dropped, i.e., delivered,e. (b) and (d),f. None of the above.
Do an Internet Checksum if the sender wants to send the message "idENtiTY". with solution pls ty.