Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 843

What is a benefit of MACsec in a multilayered LAN network design?

Answer options

• A. Application flows between hosts on the LAN to remote destinations can be encrypted.
• B. Layer 2 trunk links between switches can be secured.
• C. There is no requirement to run IEEE 802.1X when MACsec is enabled on a switch port.
• D. Layer 3 links between switches can be secured.

Correct answer: B

Explanation

The correct answer is B because MACsec specifically secures Layer 2 trunk links between switches, providing encryption for data in transit. Option A is incorrect as it refers to application flows and not specifically to Layer 2 links. Option C is misleading since IEEE 802.1X can still be relevant even with MACsec. Option D is also incorrect because MACsec operates at Layer 2, not Layer 3.