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MCQs

Total Questions : 69 | Page 4 of 7 pages
Question 31. How many default number methods are available in JavaScript?
  1.    5
  2.    6
  3.    7
  4.    8
 Discuss Question
Answer: Option C. -> 7
Question 32. What is an observer effect?
  1.    Observing influences outcome
  2.    Observing never influences outcome
  3.    Obversing and outcome are independent
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Observing influences outcome
Question 33. Which of the following are ways to benchmark code?
  1.    Timing the code
  2.    Calculating the number of operations performed
  3.    Timing the code & Calculating the number of operations performed
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Timing the code & Calculating the number of operations performed
Question 34. According to the workflow of a runtime logging, what happens after calculating the run time?
  1.    Display to screen
  2.    Log to server
  3.    Either Display to screen or Log to server
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Either Display to screen or Log to server
Question 35. How to calculate the run time of a code?
  1.    Start time – End time
  2.    End time – Start time
  3.    Start time/ End time
  4.    Start time * End time
 Discuss Question
Answer: Option B. -> End time – Start time
Question 36. Which of the following object is used to post the data to an external process, say savePerfData?
  1.    XML
  2.    XBT
  3.    XHR
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> XHR
Question 37. Where does the external process save the result of the test?
  1.    Normal file
  2.    Flat file
  3.    Folder
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Flat file
Question 38. Which function is used to start the time logging?
  1.    startTimeLogging()
  2.    start()
  3.    Loggingstart()
  4.    startLogging()
 Discuss Question
Answer: Option A. -> startTimeLogging()
Question 39. Which of the following attribute of form tag is not set by using document object in JavaScript?
  1.    Target
  2.    Enctype
  3.    Action
  4.    None of the mentioned
 Discuss Question
Answer: Option D. -> None of the mentioned
Question 40. What type of scooping is present in JavaScript?
  1.    Lexical
  2.    Literal
  3.    Both Lexical and Literal
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> Lexical

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