Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 913

Which time protocol offers security features and utilizes site-local IPv6 multicast addresses?

Answer options

• A. NTPv3
• B. PTP IEEE 1588v1
• C. NTPv4
• D. PTP IEEE 1588v2

Correct answer: C

Explanation

NTPv4 is the correct answer because it includes security features such as authentication and can utilize site-local IPv6 multicast addresses. NTPv3 does not have these enhancements, while PTP IEEE 1588v1 and v2 are primarily focused on precision time synchronization and do not specifically address the security features of NTPv4.