When is it possible to use a self-signed certificate, rather than one purchased from a commercial certificate authority?

When is it possible to use a self-signed certificate, rather than one purchased from a commercial certificate authority?
A . If you are a small business or home office
B. If you are an enterprise whose employees use only mobile devices
C. If you are an enterprise whose resources do not need security
D. If you are an enterprise whose computers all trust your active directory or other CA server

View Answer

Answer: D

Explanation:

This can include SSL/TLS certificates, code signing certificates, and S/MIME certificates. The reason why they’re considered different from traditional certificate-authority signed certificates is that they’re created, issued, and signed by the company or developer who is responsible for the website or software being signed. This is why self-signed certificates are considered unsafe for public-facing websites and applications.

Reference: https://sectigostore.com/page/what-is-a-self-signed-certificate/