Cisco CCNA Service Provider Question of the Week

CCNASPofw03What are the three parts of the Cisco Hierarchical Network Model?

    1. Aggregation
    2. Access
    3. Transport
    4. Distribution
    5. Core

The correct answer is 2, 4, and 5.

Cisco for years has been suggesting a design principle of a three layered hierarchy for scalability and policy implementation. The official layer naming from Cisco is access (what is connected to the end users, with policy for traffic for the users); distribution (used to aggregate the access devices and route the traffic to the core, with policy as to what can be routed to the core); core (that is used to interconnect the distribution devices on larger campuses).

Related Courses:
SPNGN1 – Building Cisco Service Provider Next-Generation Networks, Part 1
SPNGN2 – Building Cisco Service Provider Next-Generation Networks, Part 2

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