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MCQs

Total Questions : 86 | Page 3 of 9 pages
Question 21. Which of the following computation is correct to calculate the time taken for page load once the page is received from the server?
  1.    responseEnd-loadEventEnd
  2.    loadEventEnd-responseEnd
  3.    loadEventEnd/responseEnd
  4.    responseEnd/loadEventEnd
 Discuss Question
Answer: Option B. -> loadEventEnd-responseEnd
Question 22. Which of the following property is associated with the Response event?
  1.    responseStart
  2.    responseEnd
  3.    both responseStart and responseEnd
  4.    none of the mentioned
 Discuss Question
Answer: Option C. -> both responseStart and responseEnd
Question 23. Which of the following property is associated with the Processing event?
  1.    domComplete
  2.    domContentLoaded
  3.    domInteractive
  4.    none of the mentioned
 Discuss Question
Answer: Option D. -> none of the mentioned
Question 24. What does it indicate when the type attribute of the navigation object is set to 2?
  1.    Navigation by moving back through history
  2.    Navigation by moving forward through history
  3.    Navigation by moving back & forward through history
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Navigation by moving back & forward through history
Question 25. What does the method Performance.now() return?
  1.    DOMTimeStamp
  2.    DOMHighResTimeStamp
  3.    DOMStamp
  4.    TimeStamp
 Discuss Question
Answer: Option B. -> DOMHighResTimeStamp
Question 26. Which of the following is a read-only property?
  1.    PerformanceTiming.navigationStart
  2.    PerformanceTiming.fetchStart
  3.    PerformanceTiming.navigationStart & PerformanceTiming.fetchStart
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> PerformanceTiming.navigationStart & PerformanceTiming.fetchStart
Question 27. Which of the following is an interface?
  1.    Time
  2.    Timing
  3.    Performance
  4.    PerformanceTiming
 Discuss Question
Answer: Option D. -> PerformanceTiming
Question 28. How many properties are associated with the Response event?
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Question 29. How many properties does a prototype object have?
  1.    6
  2.    7
  3.    8
  4.    9
 Discuss Question
Answer: Option B. -> 7
Question 30. Which of the following does not serialize the undefined values or objects within an object?
  1.    JSON.string
  2.    JSON
  3.    JSON.stringify
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> JSON.stringify

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