CCNA: Cisco Certified Network Associate — Question 755

What is a function of the core and distribution layers in a collapsed-core architecture?

Answer options

• A. The router can support HSRP for Layer 2 redundancy in an IPv6 network.
• B. The core and distribution layers are deployed on two different devices to enable failover.
• C. The router operates on a single device or a redundant pair.
• D. The router must use IPv4 and IPv6 addresses at Layer 3.

Correct answer: C

Explanation

The correct answer, C, accurately describes that in a collapsed-core architecture, the functions of the core and distribution layers are combined into one device or a redundant pair for efficiency. Option A is incorrect because HSRP is related to Layer 2 redundancy but does not specifically pertain to the core and distribution layers' function. Option B is also wrong as it suggests a separation that contradicts the concept of a collapsed-core design. Option D is misleading as it implies a requirement for both types of addresses, rather than describing the operational structure of the layers.