FCP – FortiWAN and Cloud Security Administrator 7.4 — Question 31

An administrator needs to attach an Elastic Network Interface (ENI) to an application instance in a VPC with multiple availability zones. An instance runs in availability zone 1.
Which ENI property must the administrator consider when implementing this requirement?

Answer options

• A. An ENI cannot attach to an instance in availability zone 2.
• B. After the ENI detaches from one instance, it can reattach only to the same instance.
• C. You can detach the primary ENI from an AWS instance.
• D. When you move an ENI, network traffic remains directed to the old instance until you terminate that instance.

Correct answer: A

Explanation

The correct answer is A because an Elastic Network Interface (ENI) can only be attached to instances within the same availability zone. Option B is incorrect as an ENI can reattach to a different instance after being detached. Option C is misleading since while you can detach the primary ENI, it is not a requirement. Option D is incorrect because when you move an ENI, traffic is redirected immediately to the new instance.