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MCQs

Total Questions : 68 | Page 3 of 7 pages
Question 21. Firebug is an extension of which browser?
  1.    Mozilla
  2.    Chrome
  3.    IE
  4.    Opera
 Discuss Question
Answer: Option A. -> Mozilla
Question 22. Firebug can be used to inspect
  1.    HTML
  2.    CSS
  3.    DOM
  4.    All of the mentioned
 Discuss Question
Answer: Option D. -> All of the mentioned
Question 23. Why do Web Developers use Firebug?
  1.    Track cookies
  2.    Track sessions
  3.    Both Track cookies and sessions
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Both Track cookies and sessions
Question 24. What are the goals for using Firebug?
  1.    Performance
  2.    Adaptability
  3.    Complexity
  4.    Reliability
 Discuss Question
Answer: Option A. -> Performance
Question 25. Which of the following is not a feature of the User Interface?
  1.    Skinnable Interface
  2.    Resizable Side Panel
  3.    Fixed Side Panel
  4.    Menu options
 Discuss Question
Answer: Option C. -> Fixed Side Panel
Question 26. What is the default value of the property overrideConsole
  1.    1
  2.    true
  3.    0
  4.    false
 Discuss Question
Answer: Option B. -> true
Question 27. Which of the following property(s) has a default value as false?
  1.    disableWhenFirebugActive
  2.    showIconWhenHidden
  3.    disableXHRListener
  4.    Both disableWhenFirebugActive & showIconWhenHidden
 Discuss Question
Answer: Option C. -> disableXHRListener
Question 28. Which of the following action is possible in Firebug when used as a JavaScript Debugger and Profiler?
  1.    Pause execution in any line
  2.    Find Scripts easily
  3.    Find Scripts easily & also Pause execution in any line
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Find Scripts easily & also Pause execution in any line
Question 29. The let keyword can be used
  1.    in a for or for/in loop, as a substitute for var
  2.    as a block statement, to define new variables
  3.    to define variables that are scoped to a single expression
  4.    all of the mentioned
 Discuss Question
Answer: Option D. -> all of the mentioned
Question 30. How does PhantonJS use YSlow?
  1.    Queries
  2.    Statements
  3.    Command Line Prompt
  4.    Command Line Script
 Discuss Question
Answer: Option D. -> Command Line Script

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