JavaScript Benchmarking and Logging with perfLogger MCQ

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• How do you specifically execute a command in JavaScript?
  ক

  execcommand()

  খ

  exec(command)
• How can you dispatch a synthetic event object?
  ক

  dispatchEvent()

  খ

  dispatch()

  গ

  dispatch(Event)

  ঘ

  eventdispatch()
• How can you create a node for comment in JavaScript?
  ক

  comment()

  খ

  createComment()

  গ

  comm()

  ঘ

  create()
• What is the function of the method importNode()?
  ক

  Copies without removing

  খ

  Copies and removes

  গ

  Only copies

  ঘ

  Only removes
• What is the purpose of the adoptNode() method?
  ক

  Removes node

  খ

  Makes it ready for insertion

  গ

  Removes node and Makes it ready for insertion

  ঘ

  Changes the node
• What is the purpose of the property width belonging to the ImageData element?
  ক

  Number of data

  খ

  Number of pixels

  গ

  Number of pixels per row of data

  ঘ

  Number of columns
• What is the return data type of the property accept that belongs to the Input element?
  ক

  integer

  খ

  string

  গ

  boolean

  ঘ

  float
• The lexical scooping in JavaScript is based on which of the following?
  ক

  Segments

  খ

  Blocks

  গ

  Functions

  ঘ

  Entire code
• Which function is used to stop the time logging?
  ক

  stopTimeLogging()

  খ

  stop()

  গ

  finish()

  ঘ

  abort()
• Which of the following attribute of form tag is not set by using document object in JavaScript?
  ক

  Target

  খ

  Enctype

  গ

  Action

  ঘ

  Logging
• Which function is used to start the time logging?
  ক

  startTimeLogging()

  খ

  start()

  গ

  Loggingstart()

  ঘ

  startLogging()
• Where does the external process save the result of the test?
  ক

  Normal file

  খ

  Flat file

  গ

  Folder

  ঘ

  .exe file
• Which of the following object is used to post the data to an external process, say savePerfData?
  ক

  XML

  খ

  XBT

  গ

  XHR

  ঘ

  XTR
• According to the workflow of a runtime logging, what happens after calculating the run time?
  ক

  Display to screen

  খ

  Log to server

  গ

  Either Display to screen or Log to server

  ঘ

  Server to log
• How to calculate the run time of a code?
  ক

  Start time – End time

  খ

  End time – Start time

  গ

  Start time/ End time

  ঘ

  Start time * End time
• Which of the following are ways to benchmark code?
  ক

  Timing the code

  খ

  Calculating the number of operations performed

  গ

  Timing the code & Calculating the number of operations performed

  ঘ

  Calculating the number of lines
• How many default number methods are available in JavaScript?
  ক

  5

  খ

  6

  গ

  7

  ঘ

  8