Certified Information Security Manager (CISM) — Question 885

Which of the following is the BEST method to protect the confidentiality of data transmitted over the Internet?

Answer options

• A. Network address translation (NAT)
• B. Message hashing
• C. Transport Layer Security (TLS)
• D. Multi-factor authentication

Correct answer: C

Explanation

Transport Layer Security (TLS) is designed specifically to secure data in transit, ensuring its confidentiality and integrity. Network address translation (NAT) and message hashing do not provide confidentiality for transmitted data, while multi-factor authentication focuses on user verification rather than data protection.