CA2106 quiz

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Quiz password ("sem1")

Answer all 20 multiple-choice questions.
1 mark each.
Quiz is 20 percent of module.
There is no negative marking.

You are told some information is at the location: https://www.company.com/. The address: HTTPS://WWW.COMPANY.COM/ will work:
Never.
If the destination is a Windows server but not a UNIX server.
Always.
If the destination is a UNIX server but not a Windows server.
Why is obfuscated Javascript common?
Obfuscated Javascript is not common.
Obfuscated Javascript is compulsory.
Because Javascript is server-side compiled.
Because Javascript is client-side compiled.
Because Javascript is server-side interpreted.
Because Javascript is client-side interpreted.
How would you find out how many users were abandoning their "shopping carts" on your e-Commerce site without buying anything?
You cannot know this information. Only the payments mechanism (e.g. Paypal) can know this information.
Survey your customers via telephone.
Survey your customers via email.
Survey your customers with a form on your home page.
Client-side logs and diagnostic tools.
You cannot know this information. It only exists on the client side.
Server-side logs and diagnostic tools.
Do browsers display HTML and CSS errors?
Yes. The author of the code sees these.
Yes, and the page will not load.
Yes. On the server side.
No, and the page loads anyway if possible.
Yes, and the page loads anyway if possible.
No. The HTML and CSS will not be transmitted to the client.
No, and the page will not load.
How do you see other people's CSS?
You cannot see other people's CSS.
CSS is server-side only.
CSS is client-side only.
"View Source" sometimes works.
You can see other people's CSS if they let you.
"View Source" always works.
At DCU, the URL https://student.computing.dcu.ie/~mhumphrysdculab/index/ maps to the file:
/users/tutors/mhumphrysdculab/index.html
/users/tutors/mhumphrysdculab/public_html/index.html
/users/tutors/mhumphrysdculab/index/index.html
/users/tutors/mhumphrysdculab/public_html/
/users/tutors/mhumphrysdculab/public_html/index/index.html
/users/tutors/mhumphrysdculab/public_html/index
/users/tutors/mhumphrysdculab/
/users/tutors/mhumphrysdculab/index
In a Web service, code that (a) accesses a database, (b) tracks mouse movements, and (c) does general calculations, should be executed on:
(a) client, (b) client, (c) server
(a) client, (b) server, (c) server
(a) server, (b) client, (c) client
(a) client, (b) client, (c) client
(a) server, (b) server, (c) client
(a) client, (b) server, (c) client
(a) server, (b) server, (c) server
(a) server, (b) client, (c) server
You should define a class in CSS when:
The element is a div.
Never. It is an error if you do.
If it is re-used on multiple elements.
Always. It is an error if you do not.
CSS does not have classes.
If it is standard CSS.
If it is non-standard CSS.
You want to embed a Google search box on your page. Which of these would you try?
You cannot do this because of the same-origin policy.
You cannot do this because it will have a different domain.
Look in Google source code for <form and possibly edit the URL.
You cannot do this.
Write a form on your page to send the data to a form on Google's page.
Look in Google source code for <form
You cannot do this because it will have a different URL.
You cannot do this because it will have different style sheets.
You are told some information is at the location: https://www.company.com/dir/file.html. The address: HTTPS://WWW.COMPANY.COM/DIR/FILE.HTML will work:
If the destination is a UNIX server but not a Windows server.
If the destination is a Windows server but not a UNIX server.
Always.
Never.
At DCU, the URL https://student.computing.dcu.ie/~mhumphrysdculab/s/s/file.html contains an embedded image using HTML code: <img src="../../img.jpg">
This maps to the image file:
/users/tutors/img.jpg
/users/tutors/mhumphrysdculab/public_html/s/s/img.jpg
This is a HTML syntax error.
/users/tutors/mhumphrysdculab/s/img.jpg
/users/tutors/mhumphrysdculab/public_html/s/img.jpg
/users/tutors/mhumphrysdculab/s/s/img.jpg
/users/tutors/mhumphrysdculab/public_html/img.jpg
/users/tutors/mhumphrysdculab/img.jpg
Assuming there is a button with id "thebutton", what does this jQuery do?
```
  $("#thebutton").click ( function(){ console.log ("Click here"); } ); 
```
It defines an "anonymous function" that is never called.
Logs that the button was clicked.
When button clicked, it writes "Click here" to the logfile.
When button clicked, it writes "Click here" to the page.
When button clicked, it writes "Click here" to the JS console.
Puts the text "Click here" on the button.
When button clicked, it writes "Click here" to the button.
Which of these URI schemes is still widely used?
file:
news:
wtai:
ftp:
telnet:
gopher:
Do browsers display Javascript errors?
Not on the main page. They are shown in the console.
Yes, of course. The user needs to see these.
Yes. The author of the code sees these.
No. Javascript with errors will not be transmitted to the client.
No.
Yes. On the server side.
How do you see other people's HTML?
You can see other people's HTML if they let you.
HTML is server-side only.
You cannot see other people's HTML.
"View Source" always works.
"View Source" sometimes works.
HTML is client-side only.
Which of these is not a strategy adopted by web servers to deal with high traffic?
Multi-threading.
Multiple IP addresses.
Multiple domain names.
Cache of disk reads in memory.
Multiple servers.
Use of multiple disks for parallel reads.
We have a web page with relative links to files like: "file.html" for many different filenames.
We want to change them to absolute links to URLs like: "https://server.com/file.html"
We do a Find and Replace of what form?
<a href to <a href=https://server.com/
<a to <a href=https://server.com/
<a href=" to <a href=https://server.com/
<a to <a href="https://server.com/
<a href= to <a href="https://server.com/
file.html to https://server.com/file.html
We cannot do this.
<a href=" to <a href="https://server.com/
Which of these is true?
Programming languages on the server side are diverse. Programming languages on the client side are diverse.
Programming languages on the server side are not very diverse. Programming languages on the client side are not very diverse.
Programming languages on the server side are diverse. Programming languages on the client side are not very diverse.
Programming languages on the server side are not very diverse. Programming languages on the client side are diverse.
On the DCU web server, the URL: https://student.computing.dcu.ie/mhumphrysdculab/ maps to:
/users/tutors/mhumphrysdculab/index.html
/users/tutors/mhumphrysdculab/
/var/www/html/mhumphrysdculab/public_html/
/users/tutors/mhumphrysdculab/public_html/
/var/www/html/mhumphrysdculab/
/var/www/html/mhumphrysdculab/index.html
/users/tutors/mhumphrysdculab/public_html/index.html
/var/www/html/mhumphrysdculab/public_html/index.html
Browser caching can cause trouble for Web developers when:
Inline CSS is used.
CSS files are small.
There is no CSS.
HTML files are small.
HTML pages include separate CSS pages.
HTML files are large.
CSS files are large.