CompTIA Security+ (SY0-501) — Question 555

After a systems administrator installed and configured Kerberos services, several users experienced authentication issues. Which of the following should be installed to resolve these issues?

Answer options

• A. RADIUS server
• B. NTLM service
• C. LDAP service
• D. NTP server

Correct answer: D

Explanation

The correct answer is D, NTP server, because Kerberos relies on synchronized time between clients and the server to function properly. If the time is not synchronized, authentication will fail. The other options, such as RADIUS, NTLM, and LDAP, are not directly related to resolving Kerberos authentication issues.