JNCIA-SEC: Juniper Networks Certified Associate – Security (2021) — Question 48

What are two characteristics of a null zone? (Choose two.)

Answer options

• A. The null zone is configured by the super user.
• B. By default, all unassigned interfaces are placed in the null zone.
• C. All ingress and egress traffic on an interface in a null zone is permitted.
• D. When an interface is deleted from a zone, it is assigned back to the null zone.

Correct answer: B, D

Explanation

Options B and D are correct because unassigned interfaces automatically go to the null zone, and deleted interfaces revert to it. Options A and C are incorrect as the null zone configuration does not specifically require super user intervention, and traffic is not automatically permitted in a null zone.