Writing Homework Help

I need an explanation for this Computer Science question to help me study.

Penetration testing is a simulated cyberattack against a computer or network that checks for exploitable vulnerabilities. Pen tests can involve attempting to breach application systems, APIs, servers, inputs, and code injection attacks to reveal vulnerabilities. In a well-written, highly-detailed research paper, discuss the following:

• What is penetration testing
• Testing Stages
• Testing Methods
• Testing, web applications and firewalls