Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 855

You want to securely implement the Network Time Protocol (NTP) on your network. What two mechanisms are available to secure NTP? (Choose two.)

Answer options

• A. IPSec communication
• B. MD5 authentication keys
• C. Role based access control (RBAC)
• D. access-group configuration

Correct answer: B, D

Explanation

MD5 authentication keys provide a way to ensure that NTP messages are authentic and have not been tampered with, making them a secure option. Access-group configuration can be used to limit which devices can communicate using NTP, thereby adding a layer of security. IPSec and RBAC do not directly secure NTP communications as required by the question.