Javascript Interview Questions - 26

1. Which is the object that defines methods that allow complete control over page content?

A. The client-side document object

B. The server-side document object

C. Both client-side and server-side document object

D. Web document object

Correct Answer is : The client-side document object

2. Which was one of the first security subsets proposed?

A. FBJS

B. Caja

C. dojox.secure

D. ADSafe

Correct Answer is : ADSafe

3. Which is the subset that transforms web content into secure modules that can be safely hosted on a web page?

A. Microsoft Web Sandbox

B. ADsafe

C. Caja

D. dojox.secure

Correct Answer is : dojox.secure

4. Firebug is an extension of which browser?

A. Mozilla

B. Chrome

C. IE

D. Opera

Correct Answer is : Mozilla

5. Firebug can be used to inspect ___________

A. HTML

B. CSS

C. DOM

D. All of the mentioned

Correct Answer is : All of the mentioned

6. Why do Web Developers use Firebug?

A. Track cookies

B. Track sessions

C. Both Track cookies and sessions

D. Track data

Correct Answer is : Both Track cookies and sessions

7. What are the goals for using Firebug?

A. Performance

B. Adaptability

C. Complexity

D. Reliability

Correct Answer is : Performance

8. Which of the following is not a feature of the User Interface?

A. Skinnable Interface

B. Resizable Side Panel

C. Fixed Side Panel

D. Menu options

Correct Answer is : Fixed Side Panel

9. What is the default value of the property overrideConsole?

A. 1

B. TRUE

C. 0

D. FALSE

Correct Answer is : TRUE

10. Which of the following property(s) has a default value as false?

A. disableWhenFirebugActive

B. showIconWhenHidden

C. disableXHRListener

D. both disableWhenFirebugActive & showIconWhenHidden

Correct Answer is : disableXHRListener

11. Which of the following action is possible in Firebug when used as a JavaScript Debugger and Profiler?

A. Pause execution in any line

B. Find Scripts easily

C. Find Scripts easily & also Pause execution in any line

D. Find text easily

Correct Answer is : Find Scripts easily & also Pause execution in any line

12. Consider the following code snippet. console.log(p) If p is not defined, what would be the result or type of error?

A. Zero

B. Null

C. ReferenceError

D. ValueNotFoundError

Correct Answer is : ReferenceError

13. The let keyword can be used ___________

A. in a for or for/in loop, as a substitute for var

B. as a block statement, to define new variables

C. to define variables that are scoped to a single expression

D. all of the mentioned

Correct Answer is : all of the mentioned

14. When does WebPageTest become necessary?

A. To run any common website

B. To run private websites

C. To run QA testing

D. To run media testing

Correct Answer is : To run private websites

15. What is the purpose of the Auth tab in the testing platform?

A. To specify credentials

B. To authorize a page

C. To run the test

D. To run user access

Correct Answer is : To specify credentials

16. What is the purpose of the Script tab?

A. To edit the coding

B. To run on multiple servers

C. To run more complex tests

D. To run media

Correct Answer is : To run more complex tests

17. Which is the command that is used to spoof the client user agent?

A. setUserAgent

B. spoofAgent

C. spoofClientUserAgent

D. spoofUser

Correct Answer is : setUserAgent

18. What is the purpose of the Block tab?

A. To block the response

B. To block the request

C. To block the mouse pointer

D. To block the cursor

Correct Answer is : To block the request

19. What is the purpose of the Video tab?

A. To take video of the page

B. To capture screenshots of the test only

C. To take video of the test

D. To capture screenshots of the page

Correct Answer is : To capture screenshots of the page

20. What is the task of the Advanced Panel?

A. Test stop running

B. Loading the pages

C. Skewing the results

D. Loading the server

Correct Answer is : Test stop running

Javascript interview questions part 26

Javascript interview questions part 26

Take as many assements as you can to improve your validate your skill rating

Total Questions: 20

1. Which is the object that defines methods that allow complete control over page content?

2. Which was one of the first security subsets proposed?

3. Which is the subset that transforms web content into secure modules that can be safely hosted on a web page?

4. Firebug is an extension of which browser?

5. Firebug can be used to inspect ___________

6. Why do Web Developers use Firebug?

7. What are the goals for using Firebug?

8. Which of the following is not a feature of the User Interface?

9. What is the default value of the property overrideConsole?

10. Which of the following property(s) has a default value as false?

11. Which of the following action is possible in Firebug when used as a JavaScript Debugger and Profiler?

12. Consider the following code snippet. console.log(p) If p is not defined, what would be the result or type of error?

13. The let keyword can be used ___________

14. When does WebPageTest become necessary?

15. What is the purpose of the Auth tab in the testing platform?

16. What is the purpose of the Script tab?

17. Which is the command that is used to spoof the client user agent?

18. What is the purpose of the Block tab?

19. What is the purpose of the Video tab?

20. What is the task of the Advanced Panel?

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