4. What does XSS stand for in the context of web security?

What is the primary purpose of form data validation in web applications?

A). Enhancing user experience

B). Preventing security vulnerabilities

C). Optimizing server performance

D). Improving search engine ranking

Which PHP function is commonly used to check if a form field is empty?

A). empty()

B). isset()

C). is_empty()

D). is_null()

What is the purpose of input validation in web forms?

A). Ensuring Data Integrity

B). Enhancing User Experience

C). Preventing XSS Attacks

D). Enforcing Password Policies

Which of the following is a secure method for storing passwords in a database?

A). Hashing

B). Encryption

C). Salting

D). All of the above

Which of the following is NOT a common input validation technique for form data?

A). Regular Expressions

B). Whitelisting

C). Blacklisting

D). Tokenization

Which PHP function is commonly used to sanitize input data from a form to prevent SQL injection?

A). mysqli_real_escape_string()

B). htmlspecialchars()

C). filter_var()

D). htmlentities()

Which of the following HTTP methods is considered safe and idempotent, making it suitable for form submissions?

A). POST

B). GET

C). PUT

D). DELETE

What security mechanism prevents Cross-Site Request Forgery (CSRF) attacks by generating and validating unique tokens for each form submission?

A). CSRF Token

B). Session Management

C). Secure Cookies

D). HTTPS

What is the purpose of using prepared statements when interacting with databases in PHP?

A). Preventing SQL Injection

B). Improving Performance

C). Encrypting Data

D). Enforcing Data Integrity

Which PHP function is used to generate a random CSRF token for form submissions?

A). bin2hex()

B). uniqid()

C). md5()

D). openssl_random_pseudo_bytes()