Which firewall mode does a Cisco Adaptive Security Appliance use to inspect Layer 2 traffic?

The correct answer is D. transparent. The Cisco Adaptive Security Appliance (ASA) uses transparent mode to inspect Layer 2 traffic. In this mode, the ASA functions as a bridge, forwarding traffic between interfaces while still inspecting it for security threats. This allows the ASA to operate without requiring…

Submitted by khalil_dz· Mar 30, 2026ERROR: Official Exam Domains list was not provided in the prompt.

Question

Options

Ainline
Bpassive
Crouted
Dtransparent

How the community answered

(27 responses)

C
4% (1)
D
96% (26)

Explanation

The Cisco Adaptive Security Appliance (ASA) uses transparent mode to inspect Layer 2 traffic. In this mode, the ASA functions as a bridge, forwarding traffic between interfaces while still inspecting it for security threats. This allows the ASA to operate without requiring changes to the existing IP addressing or routing configuration.

Topics

#Cisco ASA#Firewall modes#Layer 2 inspection

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