1.6b - Network Architectures (Prof. Messer)

This flashcard set covers the fundamental concepts of network architectures, including tiered designs and data center traffic patterns as described in the CompTIA Network+ N10-009 curriculum.

Three-tiered architecture

A common enterprise network design consisting of three distinct layers: the core, the distribution layer, and the access layer.

Core layer

The central point of the network that contains critical resources such as servers, applications, databases, and core routers.

Distribution layer

The midpoint in a three-tiered architecture that provides redundancy and connectivity between the users and the core resources.

Access layer

The layer where users connect to the network, typically consisting of switches located close to the users, such as on the same floor of a building.

Collapsed core architecture

A two-tier network design used by smaller organizations that combines the core and distribution layers into a single functional block.

East-west traffic

Traffic flow where both the origination and destination of the data are contained within the same local data center network.

North-south traffic

Traffic flow that is either leaving the data center to an external source or entering the data center from an external source like the internet.