Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
Expert Solution & Answer
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Chapter 6, Problem P33P

a.

Explanation of Solution

Given: Consider the data center in the figure “6.30” supports both e-mail and video distribution among other applications. Both the e-mail and video contains 4 racks of servers each. All the racks lie below single tier-2 switch.

To find: Time that the e-mail and video application uses the 4th rack.

Solution:

The fraction of time that the email and video applications uses the 4th rack is 110 because 99

b.

Explanation of Solution

Given: Consider the data center in the figure “6.30” supports both e-mail and video distribution among other applications. Both the e-mail and video contains 4 racks of servers each. All the racks lie below single tier-2 switch.

To find: Fraction of time that the e-mail and video application uses the 4th rack if both has independent usage.

Solution:

The probability to get the fraction of time that the e-mail and video application needs the 4th rack if both has independent usage is given below:

time(t)=0.001*0

c.

Explanation of Solution

Given: Consider that the application can have a shortage of servers (for 0.001% of time).

To find:

Solution:

Consider that the 1st three racks are allotted for videos and the 4th rack is shared among both the video and e-mail...

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