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Welcome to the Caching and Debugging MCQs Page

Dive deep into the fascinating world of Caching and Debugging with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Caching and Debugging, a crucial aspect of JavaScript. In this section, you will encounter a diverse range of MCQs that cover various aspects of Caching and Debugging, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within JavaScript.

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Check out the MCQs below to embark on an enriching journey through Caching and Debugging. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of JavaScript.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Caching and Debugging. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Caching and Debugging MCQs | Page 3 of 11

Explore more Topics under JavaScript

Q21.
Why shouldn't JavaScript functions not be too long?

a.

User friendliness

b.

Tie up event loops

c.

Browser becomes unresponsive

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q22.
The object that looks to the thread that creates it is

a.

Window

b.

Worker

c.

Element

d.

Hash

Discuss
Answer: (b).Worker
Q23.
Which of the following is a global object for a new worker?

a.

WorkerGlobalScope

b.

Worker

c.

WorkerScope

d.

Window

Discuss
Answer: (a).WorkerGlobalScope
Q24.
Which will be invoked to create a new worker?

a.

Function

b.

Destructor

c.

Constructor

d.

Interface

Discuss
Answer: (c).Constructor
Q25.
What will happen if you specify an absolute URL in the Worker constructor?

a.

Resolves itself

b.

Must have the same origin

c.

Must not have the same origin

d.

None of the mentioned

Discuss
Answer: (b).Must have the same origin
Q26.
How can you send data using a Worker object?

a.

postMessage()

b.

sendMessage()

c.

Message()

d.

post()

Discuss
Answer: (a).postMessage()
Q27.
Which property is used to manage multiple event handlers?

a.

onmessage

b.

onerror

c.

both onmessage and onerror

d.

none of the mentioned

Discuss
Answer: (c).both onmessage and onerror
Q28.
Which is the function that allows a worker to terminate itself?

a.

close()

b.

exit()

c.

terminate()

d.

halt()

Discuss
Answer: (a).close()
Q29.
BLOB stands for

a.

Binary Little Object

b.

Binary Large Object

c.

Broken Large Object

d.

None of the mentioned

Discuss
Answer: (b).Binary Large Object
Q30.
The size of blobs are generally calculated in

a.

Meters

b.

Kilometers

c.

Bytes

d.

Pixels

Discuss
Answer: (c).Bytes
Page 3 of 11

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