Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 36

Which technology provides a secure communication channel for all traffic at Layer 2 of the OSI model?

Answer options

• A. SSL
• B. Cisco TrustSec
• C. MACsec
• D. IPsec

Correct answer: C

Explanation

MACsec is designed specifically to secure Layer 2 communications, providing encryption and integrity protection for data frames. SSL and IPsec operate at higher layers of the OSI model, while Cisco TrustSec is a framework that utilizes MACsec but does not provide the direct encryption capabilities itself.