Certified Information Security Manager (CISM) — Question 564

Which of the following will protect the confidentiality of data transmitted over the Internet?

Answer options

• A. Message digests
• B. Encrypting file system
• C. Network address translation
• D. IPsec protocol

Correct answer: D

Explanation

The IPsec protocol is designed specifically to provide confidentiality, integrity, and authenticity for data transmitted over IP networks. While message digests and encrypting file systems enhance security, they do not specifically focus on securing data in transit over the Internet. Network address translation primarily functions to hide internal IP addresses rather than securing data confidentiality.