Basic testing is a test methodology that assumes no knowledge of the internal structure and implementation detail of the assessment objet. This type of testing is also known as: Response:

Gray box testing involves limited knowledge of the internal structure, combining aspects of both black box and white box testing.

White box testing requires full knowledge of the internal structure, code, and design of the system to test internal logic and vulnerabilities.

Black box testing, also known as external or functional testing, specifically assumes no prior knowledge of the internal workings, code, or infrastructure of the system being tested. Testers interact with the system solely through its external interfaces, simulating a real-world attacker who has no insider information.

Penetration testing is a broader term for simulating attacks to find vulnerabilities; it can employ black, white, or gray box approaches, but "basic testing with no internal knowledge" is specifically black box.