Basics of Web Design: HTML5 & CSS3 (3rd Edition)
3rd Edition
ISBN: 9780133970746
Author: Terry Felke-Morris, Terry Morris
Publisher: PEARSON
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Expert Solution & Answer
Chapter 12, Problem 1RQ
Program Description Answer
Usability is the quality measure of experience of the user when he/she interacts with website.
Hence, the correct answer is option “B”.
Expert Solution & Answer
Explanation of Solution
Usability:
- Usability represents the accessibility of a website by the user.
- It represents the improvement of the information in a website and providing the required information or data.
- It represents the security for accessing the data.
- It represents the performance of the website.
- Therefore, usability is termed as quality measure of a website.
Explanation for incorrect options:
Accessibility:
Accessibility represents how easily a website can be accessed and provides required information but cannot be referred as quality measure.
Hence, the option “A” is wrong.
Universal design:
Universal design helps in creating an efficient and user-friendly website but cannot be referred as quality measure.
Hence, the option “C” is wrong.
Assistive technology:
Assistive technology is a software program that is included in the website code and it cannot be considered as quality measure.
Hence, the option “D” is wrong.
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Given the following Extended-BNF grammar of the basic mathematical expressions:
Show the derivation steps for the expression: ( 2 + 3 ) * 6 – 20 / ( 3 + 1 )
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Whentheuserenters!!,themostrecentcommandinthehistoryisexecuted.In the example above, if the user entered the command:
Osh> !!
The ‘ls -l’ command should be executed and echoed on user’s screen. The command should also be placed in the history buffer as the next command.
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Osh> ! 3
The ‘ps’ command should be executed and echoed on the user’s screen. The command should also be placed in the history buffer as the next command.
Error handling:
The program should also manage basic error handling. For example, if there are no commands in the history, entering !! should result in a message “No commands in history.” Also, if there is no command corresponding to the number entered with the single !, the program should output "No such command in history."
Activity No.
Activity
Time (weeks)
Immediate Predecessors
1
Requirements collection
3
2
Requirements structuring
4
1
3
Process analysis
3
2
4
Data analysis
3
2
5
Logical design
50
3,4
6
Physical design
5
5
7
Implementation
6
6
c. Using the information from part b, prepare a network diagram. Identify the critical path.
Chapter 12 Solutions
Basics of Web Design: HTML5 & CSS3 (3rd Edition)
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