Quiz

React Fundamentals

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Quiz

Question 1

What is the primary function of the key prop in React when rendering lists?

A

To determine the length of the list.

B

To apply styling to each list item.

C

To uniquely identify each element for efficient re-renders.

D

To enable event handling for each list element.

Question 2

What is the main advantage of using the logical AND (&&) operator for conditional rendering in React?

A

It automatically renders a default component if the condition is false.

B

It replaces the need for JSX in React components.

C

It provides a concise way to render content only when a condition is true.

D

It allows multiple conditions to be evaluated simultaneously.

Question 3

What is the primary purpose of using a ternary operator in React for conditional rendering?

A

To evaluate conditions without returning any result.

B

To provide a shorthand way to write an if-else statement directly in JSX.

C

To execute multiple conditions simultaneously.

D

To avoid using JSX when rendering components.

Question 4

What is one key benefit of using multiple return statements for conditional rendering in React components?

A

It eliminates the need for using props in functional components.

B

It automatically optimizes component performance without additional effort.

C

It allows for handling multiple unrelated components in one return statement.

D

It simplifies the logic and reduces deeply nested conditions.

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