Q
What is the purpose of using comments to prevent execution in programming?

Answer & Solution

Answer: Option C
Solution:
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In JavaScript, what is the syntax for a single-line comment?

A). // This is a comment

B). /* This is a comment */

C). # This is a comment

D).

How can developers maintain code readability when using comments to prevent execution in JavaScript?

A). By using cryptic comments that only developers can understand

B). By adding extensive comments that explain every line of code

C). By using single-line comments to disable code segments and avoid multi-line comments

D). By removing all comments from the code

Which statement about using comments to prevent execution is accurate?

A). Comments are executed as code

B). Comments are ignored by the interpreter

C). Comments can contain executable code

D). Comments increase code performance

Which statement accurately describes the use of comments to prevent execution in JavaScript?

A). Comments are executed as code and should be avoided for preventing execution

B). Comments are used only for providing explanations and cannot prevent execution

C). Comments are ignored by the interpreter during execution, making them suitable for preventing code execution

D). Comments can be used to disable specific code blocks temporarily, aiding in debugging and development

What happens if you mix single-line and multi-line comments incorrectly in JavaScript?

A). It will cause the code to execute twice

B). It will result in a syntax error

C). It will create a new comment type called hybrid comments

D). It will disable all comments in the code block

In JavaScript, what is the purpose of using multi-line comments to prevent execution?

A). To provide detailed explanations about the code

B). To execute the code block

C). To improve code performance

D). To increase code complexity

What should be avoided when using comments to prevent code execution?

A). Using comments to provide explanations about the code

B). Commenting out entire sections of code without a clear reason

C). Using comments to add debugging information

D). Using comments within functions

Which type of comments is commonly used to prevent code execution temporarily?

A). Single-line comments

B). Multi-line comments

C). Inline comments

D). Block comments

How can multi-line comments be used to disable specific code blocks in JavaScript?

A). By adding a DISABLED keyword at the beginning of the code block

B). By enclosing the code block in /* */

C). By using single-line comments // to comment out the code block

D). By adding the disable: true attribute to the code block

Which of the following is a valid way to prevent the execution of code in JavaScript temporarily?

A). By adding a DEBUG keyword at the end of each line of code

B). By wrapping the code block with {}

C). By using single-line comments // to comment out the code

D). By adding the execute: false attribute to the code block