Which function is performed by the collapsed core layer in a two-tier architecture?

Which function is performed by the collapsed core layer in a two-tier architecture?
A. enforcing routing policies
B. marking interesting traffic for data policies
C. applying security policies
D. attaching users to the edge of the network

Pass Cisco CCNA 200-301 Exam in First Attempt FULL Printable PDF and Software. VALID exam to help you pass.