Which of the following are external interface ports, typically used when installing external peripheral devices?

A.
USB.

B.
FireWire.

C.
Serial.

D.
Parallel

E.
All of the above

Explanation:
The external interface ports typically used when installing external peripheral devices are USB, FireWire, serial and parallel. Remember that external peripheral devices have to connect to the server via interface ports.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 409-410.