Which two statements describe the hierarchical LAN design model? (Choose two)

The hierarchical LAN model separates the network into core, distribution, and access layers with clearly defined roles, making it a well-understood architecture that enterprises can scale by expanding individual layers independently without redesigning the entire network.

Modern data centers typically adopt the spine-leaf (Clos) topology rather than the traditional three-tier hierarchical model, as spine-leaf better supports east-west traffic patterns and horizontal scaling.

The hierarchical model is specifically designed to reduce operational complexity through separation of functions into distinct layers, so characterizing it as 'highly complex' contradicts its core design principle.

The addition of distinct layers (core, distribution, access) introduces architectural structure that increases manageability and predictability, but 'simplified design' is not the primary or defining characteristic of the hierarchical model.

Because each layer in the hierarchical model has a defined scope and function, administrators can upgrade, reconfigure, or introduce new services at one layer without disrupting the rest of the network, enabling a controlled and staged rollout process.