A network engineer is designing a borderless switched network in a hierarchical fashion. Why might the engineer consider using a two-tier layer model?
- The access layer in this model has different functions from the access layer in the three-tier layer model.
- It is recommended in smaller campus locations where there are fewer users accessing the network.
- It consists of a collapsed layer composed of the access and the distribution layer, and a second layer composed of the core layer.
- The primary function of the collapsed layer is to provide network access to the user.
Explanation: In smaller campus locations where there are fewer users accessing the network or in campus sites consisting of a single building, separate core and distribution layers may not be needed. In this scenario, the recommendation is the two-tier campus network design, also known as the collapsed core network design. The access layer represents the network edge, where traffic enters or exits the campus network, and it has the same functions and it has the same functions on the three-tier and two-tier layer models. Traditionally, the primary function of an access layer switch is to provide network access to the user.
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