PACKET SCHEDULING (SCENARIO 2, PRIORITY). 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 beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at = 1, 2, 3, 4, 5, 7, 8) under priority scheduling, where red packets have higher priority. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). [Note: You can find more examples of problems similar to this here.] arrivals packet in service t 123 4 5 ? ? 67

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
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PACKET SCHEDULING (SCENARIO 2, PRIORITY).
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 beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t
= 1, 2, 3, 4, 5, 7, 8) under priority scheduling, where red packets have higher priority.
Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and
no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1).
[Note: You can find more examples of problems similar to this here.]
arrivals
packet in
service
departures
t
123 4 5
0
1
2
?
3
?
4
5
67
6
?
?
7 8
Transcribed Image Text:PACKET SCHEDULING (SCENARIO 2, PRIORITY). 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 beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 7, 8) under priority scheduling, where red packets have higher priority. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). [Note: You can find more examples of problems similar to this here.] arrivals packet in service departures t 123 4 5 0 1 2 ? 3 ? 4 5 67 6 ? ? 7 8
PACKET SCHEDULING (SCENARIO 2, RR).
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 beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t
= 1, 2, 3, 4, 5, 7, 8) under round robin scheduling, where red starts a round if there are both red and green packets ready to transmit after an empty
slot.
Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and
no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1).
[Note: You can find more examples of problems similar to this here.]
arrivals
packet in
service
departures
t
123 4 5
0
1
LO
2
?
3
?
4
5
67
6
7
?
8
Transcribed Image Text:PACKET SCHEDULING (SCENARIO 2, RR). 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 beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 7, 8) under round robin scheduling, where red starts a round if there are both red and green packets ready to transmit after an empty slot. Give your answer as 7 ordered digits (each corresponding to the packet number of a departing packet), with a single space between each digit, and no spaces before the first or after the last digit, e.g., in a form like 7 6 5 4 3 2 1). [Note: You can find more examples of problems similar to this here.] arrivals packet in service departures t 123 4 5 0 1 LO 2 ? 3 ? 4 5 67 6 7 ? 8
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