Which port categories include inbound ports of HTTP, HTTPS, FTP, and DNS?

A.
well-known ports

B.
registered ports

C.
dynamic ports

D.
private ports

Explanation:
Section Reference: Defining the Upper OSI Layers
Well-known ports are used when another computer wants to connect to a service or application running on
your computer. These ports range from 0 to 1023 anddefine commonly used protocols such as HTTP, HTTPS,
FTP, and DNS.