Question: How can input validation and output encoding contribute to preventing XSS attacks?

Answer:

Input validation and output encoding contribute to preventing XSS attacks by validating and sanitizing user input to ensure it does not contain malicious scripts and encoding output to prevent script execution.

MCQ: How can input validation and output encoding contribute to preventing XSS attacks?

A. They have no impact on preventing XSS attacks
B. By allowing any user input without validation
C. By validating and sanitizing user input to ensure it does not contain malicious scripts, and encoding output to prevent script execution
D. By encrypting web page content

Correct Answer: A. They have no impact on preventing XSS attacks

Explanation:

Input validation and output encoding contribute to preventing XSS attacks by validating and sanitizing user input to ensure it does not contain malicious scripts and encoding output to prevent script execution.