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Caching And Debugging MCQs

Practice Caching And Debugging MCQs for competitive exams.

Caching And Debugging MCQs

Practice questions from this topic.

How can you send data using a Worker object?

  1. A. postMessage()
  2. B. sendMessage()
  3. C. Message()
  4. D. post()
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What will happen if you specify an absolute URL in the Worker constructor?

  1. A. Resolves itself
  2. B. Must have the same origin
  3. C. Must not have the same origin
  4. D. None of the mentioned
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Which will be invoked to create a new worker?

  1. A. Function
  2. B. Destructor
  3. C. Constructor
  4. D. Interface
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Which of the following is a global object for a new worker?

  1. A. WorkerGlobalScope
  2. B. Worker
  3. C. WorkerScope
  4. D. Window
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The object that looks to the thread that creates it is

  1. A. Window
  2. B. Worker
  3. C. Element
  4. D. Hash
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Why shouldn’t JavaScript functions not be too long?

  1. A. User friendliness
  2. B. Tie up event loops
  3. C. Browser becomes unresponsive
  4. D. All of the mentioned
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Which of the following functions are synchronous?

  1. A. load()
  2. B. require()
  3. C. both load() and require()
  4. D. none of the mentioned
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Which of the following is one of the fundamental features of JavaScript?

  1. A. Single-threaded
  2. B. Multi-threaded
  3. C. Both Single-threaded and
  4. D. None of the mentioned
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What is the function of the closure compiler?

  1. A. Download faster
  2. B. Run faster
  3. C. Both Download faster and Run faster
  4. D. None of the mentioned
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In what way does the closure compiler help in checking the code?

  1. A. Warnings
  2. B. Suddenly aborts
  3. C. Rejects malicious inputs
  4. D. All of the mentioned
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Why is a closure template used?

  1. A. Statically updating in JavaScript
  2. B. To increase the efficiency and convenience
  3. C. Dynamically generating HTML in Java and JavaScript
  4. D. All of the mentioned
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In which way can the closure compiler can be used?

  1. A. Open source
  2. B. Run time application
  3. C. Web application
  4. D. Only Open source and Web application
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