15. Which PHP function is commonly used to validate email addresses submitted through a form?

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

What is the purpose of session management in web applications?

A). Maintaining User State

B). Encrypting Data

C). Preventing SQL Injection

D). Validating Form Data

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()

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

A). Regular Expressions

B). Whitelisting

C). Blacklisting

D). Tokenization

Which of the following is a common security vulnerability associated with form data submission?

A). SQL Injection

B). Form Spamming

C). Broken Authentication

D). Clickjacking

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

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 of the following is NOT a common security vulnerability associated with file uploads in web applications?

A). File Inclusion

B). File Upload Vulnerability

C). Path Traversal

D). Cross-Site Request Forgery

What is the purpose of using HTTPS (HTTP Secure) in web applications?

A). Encrypting Data

B). Authenticating Users

C). Preventing XSS Attacks

D). Optimizing Page Load Speed

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