Which layer of the three-tier hierarchical network model typically manages routing between VLANs, aggregates uplinks from access switch layers, and enforces security policies?
Collapsed Core
Access
Core
Distribution
The correct answer is the Distribution layer. This layer aggregates the data received from the Access layer switches and forwards it to the Core layer or routes it between different VLANs. It is crucial in managing the routing between VLANs, which involve inter-VLAN routing and Layer 3 forwarding decisions. This layer can also enforce security policies through access control lists (ACLs) and firewall policies, shaping and controlling the boundary between the high-speed backbone connectivity of the Core layer and endpoint data traffic management in the Access layer. Core layer mainly handles high-speed packet switching across the network backbone without focusing on inter-VLAN routing, making it an incorrect option. Access layer focuses on connecting endpoint devices to the network and does not handle inter VLAN routing or enforcement of security polices. Collapsed Core is an architecture where the Core and Distribution layers are combined; however, the question specifically asks about the traditional three-tier model.
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
Join premium for unlimited access and more features
All plans include the following perks.
Our pricing is simple. Full access to all certifications and exams, for one price.
As many practice tests for as many topics as you want.
Use study mode non-stop, no limits.
No annoying ads and popups. Study without distractions.
Track your scores over time in study mode and report cards.
See how you improve over time, and where you need to focus.
Access our store with even more discounts than before.
Unlimited access to all PBQs and be prepared for the real thing.
Create an account or sign in to access our study materials.