Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Expert Solution & Answer
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
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:
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...
Expert Solution & Answer
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Question 6:
A major Saudi book retailer is planning to develop a computer system to handle the store’s new online bookshop: BookShop.com. You have been chosen to do the analysis and design. As part of the development of the system, perform the following tasks:
1.Write Expanded Use Cases for buying a book from the shop using a credit card.
2.Draw an Expanded Use Case for the following interactions:
•Buying a book from the shop using a credit card.
•Checking the status of one’s orders (being filled, shipped, etc.)
•Pay for Product
•Validate customer identity
Use Case: Buy Book
Actors: Customer
Purpose: To buy a book from BookShop.com using a credit card.
Overview: A customer has selected a book to buy at the Murray.com website. The system prompts for the customer’s username and password. The customer enters these details. The system verifies the customer’s identity and retrieves the customer’s name and address, then prompts for…
- Apply a SQL injection in the Login - Apply a SQL injection (Search / GET) to list the database tables
- Apply a SQL injection (Search / GET) to list the users and passwords of the DB
Questions:
1.- What was the vulnerability used for the attack? What service was affected?
2.- What type(s) of attack(s) were made?
3.-What was the damage caused to the information asset(s)?
- Include screenshots of the entire procedure and the answers to each question
bWAPP link:
http://www.itsecgames.com/download.htm
To download bWAPP Virtual Disk
https://drive.google.com/file/d/1eckLtRkqsZIlbnSz5fWWhpotEZFvx2vo/view?usp=sharing
Chapter 6 Solutions
Computer Networking: A Top-Down Approach (7th Edition)
Ch. 6 - Consider the transportation analogy in Section...Ch. 6 - If all the links in the Internet were to provide...Ch. 6 - Prob. R3RQCh. 6 - Prob. R4RQCh. 6 - Prob. R5RQCh. 6 - Prob. R6RQCh. 6 - Prob. R7RQCh. 6 - Prob. R8RQCh. 6 - Prob. R9RQCh. 6 - Prob. R10RQ
Ch. 6 - Prob. R11RQCh. 6 - Prob. R12RQCh. 6 - Prob. R13RQCh. 6 - Prob. R14RQCh. 6 - Prob. R15RQCh. 6 - Prob. R16RQCh. 6 - Suppose the information content of a packet is the...Ch. 6 - Suppose the information portion of a packet (D in...Ch. 6 - Prob. P4PCh. 6 - Prob. P5PCh. 6 - Prob. P6PCh. 6 - Prob. P7PCh. 6 - Prob. P8PCh. 6 - Prob. P9PCh. 6 - Prob. P10PCh. 6 - Prob. P11PCh. 6 - Prob. P12PCh. 6 - Prob. P13PCh. 6 - Prob. P14PCh. 6 - Prob. P15PCh. 6 - Prob. P16PCh. 6 - Prob. P17PCh. 6 - Prob. P18PCh. 6 - Prob. P19PCh. 6 - Prob. P20PCh. 6 - Prob. P21PCh. 6 - Prob. P22PCh. 6 - Prob. P23PCh. 6 - Prob. P24PCh. 6 - Prob. P25PCh. 6 - Prob. P26PCh. 6 - Prob. P27PCh. 6 - Prob. P32PCh. 6 - Prob. P33P
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