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MCQs

Total Questions : 80 | Page 1 of 8 pages
Question 1. What are the events generated by the Node objects called?
  1.    generators
  2.    emitters
  3.    dispatchers
  4.    highevents
 Discuss Question
Answer: Option B. -> emitters
Question 2. What is the function used to remove all handlers for name events?
  1.    deleteAllListeners(name)
  2.    deleteListener(name,f)
  3.    removerListener(name,f)
  4.    removeAllListeners(name)
 Discuss Question
Answer: Option D. -> removeAllListeners(name)
Question 3. What is the function used to deregister event handler ‘f’?
  1.    deleteAllListeners(name)
  2.    deleteListener(name,f)
  3.    removerListener(name,f)
  4.    removeAllListeners(name)
 Discuss Question
Answer: Option C. -> removerListener(name,f)
Question 4. Which of the following is an event emitter?
  1.    once
  2.    process
  3.    listeners
  4.    on
 Discuss Question
Answer: Option B. -> process
Question 5. Which function is a synonym for on()?
  1.    addListener()
  2.    listeners()
  3.    once()
  4.    add()
 Discuss Question
Answer: Option A. -> addListener()
Question 6. When do uncaught exceptions generate events?
  1.    When handlers are registered
  2.    When handlers are deregistered
  3.    When handler functions are called
  4.    When handlers do not have a matching catch clause
 Discuss Question
Answer: Option A. -> When handlers are registered
Question 7. Which among the following POSIX signals generate events?
  1.    SIGDOWN
  2.    SIGFLOAT
  3.    SIGINT
  4.    SIGSHORT
 Discuss Question
Answer: Option C. -> SIGINT
Question 8. When the “end” event fires on EOF when no more data will arrive, which function is called?
  1.    s.on("data",f);
  2.    s.on("end",f);
  3.    s.on("error",f);
  4.    s.on("default",f);
 Discuss Question
Answer: Option B. -> s.on("end",f);
Question 9. What is the method used to pause “data” events?
  1.    s.pause();
  2.    s.stop();
  3.    s.halt();
  4.    s.wait();
 Discuss Question
Answer: Option A. -> s.pause();
Question 10. What will be the return value of the write() method when the Node cannot write the data immediately and has to buffer it internally?
  1.    0
  2.    1
  3.    True
  4.    False
 Discuss Question
Answer: Option D. -> False

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