What are two descriptions of three-tier network topologies? (Choose two.)

What are two descriptions of three-tier network topologies? (Choose two.)
A . The distribution layer runs Layer 2 and Layer 3 technologies
B . The network core is designed to maintain continuous connectivity when devices fail
C . The access layer manages routing between devices in different domains
D . The core layer maintains wired connections for each host
E . The core and distribution layers perform the same functions

Answer: AB