Implementing Cisco Network Security (IINS, legacy) — Question 112

What is the minimum Cisco IOS version that supports zone-based firewalls?

Answer options

• A. 12.4 (6)T
• B. 15.1
• C. 15.0
• D. 12.1T

Correct answer: A

Explanation

The minimum Cisco IOS version that introduced support for zone-based firewalls is 12.4 (6)T, making option A the correct answer. The other versions, while they may support various features, do not provide the necessary functionality for zone-based firewalls.