A network administrator wants to ensure that network traffic is highly secure while in transit. Which of the following actions best describes the actions the network administrator should take?

While Network Access Control (NAC) and firewalls are important for securing network access and managing traffic, they do not specifically ensure that the data in transit is encrypted. This choice focuses more on access control than on the encryption of data, which is essential for secure communication.

This option emphasizes intrusion prevention at the perimeter level but doesn’t address the encryption of traffic itself. Blocking specific threats is important, but it does not ensure that all data being transmitted is secure. This choice fails to prioritize the use of encrypted protocols for data transit.

Endpoint Detection and Response (EDR) focuses on monitoring endpoints for malicious activities, which is crucial for overall security. However, it does not directly relate to the encryption of network traffic in transit. Monitoring for threats does not guarantee that the data being transmitted is secure.