Consider the pattern of red and green packet arrivals to a router’s output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission (at the earliest) at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 6, 7) under Priority scheduling, where red packets have priority over green packets. Match each time unit (t=1, t=2, t=3 ....) with the number of the packet that was transmitted and thus "departs" at that time unit. At t=1, the number of the packet that finishes transmission is:At t=2, the number of the packet that finishes transmissionis: At t=3, the number of the packet that finishes transmissionis: At t=4, the number of the packet that finishes transmissionis: At t=5, the number of the packet that finishes transmissionis: At t=6, the number of the packet that finishes transmission is: At t=7, the number of the packet that finishes transmissionis: packet 1packet 4packet 5packet 2packet 7packet 3.packet 6 arrivalspacketin servicedepartures1 23456???0 1237???4???56t

Priority scheduling is a process scheduling algorithm that assigns a priority to each process and…

Answered: Consider the pattern of red and green…

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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Consider the pattern of red and green packet arrivals to a router’s output port queue, shown below. Suppose each packet takes one time slot to be transmitted, and can only begin transmission (at the earliest) at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 6, 7) under Priority scheduling, where red packets have priority over green packets. Match each time unit (t=1, t=2, t=3 ....) with the number of the packet that was transmitted and thus "departs" at that time unit.

At t=1, the  number of the packet that finishes transmission is:
At t=2, the  number of the packet that finishes transmission
is: 
At t=3, the  number of the packet that finishes transmission
is: 
At t=4, the  number of the packet that finishes transmission
is: 
At t=5, the  number of the packet that finishes transmission
is: 
At t=6, the number of the packet that finishes transmission is: 
At t=7, the  number of the packet that finishes transmission
is: 
packet 1
packet 4
packet 5
packet 2
packet 7
packet 3.
packet 6

arrivals
packet
in service
departures
1 234
56
???
0 1
2
3
7
???
4
???
5
6
t

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the order of arrival should be R1 G2 G3 R4 R5 G6 R7

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