Which of the following is needed to provide the server administrators with secure remote server access?

A.
CAT5e cabling

B.
STP twisted-pair cabling

C.
L2TP on IPSec protocols

D.
UTP twisted-pair cabling

Explanation:
A network administrator would like to implement secure remote access to servers for which he or she is responsible. Protocols such as L2TP over IPSec can be used to accomplish this. Whereas L2TP is a standard for layer 2 tunneling, IPSec is a standard for encryption and security. Although these protocols are independent, they complement each other.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 227-240.