Designing Cisco Network Service Architectures (ARCH, legacy) — Question 56

To which network layer should Cisco Express Forwarding be tuned to support load balancing and to make more informed forwarding decisions?

Answer options

• A. Layer 1
• B. Layer 2
• C. Layer 3
• D. Layer 4
• E. Layer 5
• F. Layer 6
• G. Layer 7

Correct answer: D

Explanation

The correct answer is Layer 4, as this layer is responsible for managing end-to-end communication and can utilize load balancing techniques. The other layers, such as Layer 1, Layer 2, and Layer 3, do not provide the necessary mechanisms for load balancing in the same way that Layer 4 does.