Which MAC address is recognized as a VRRP virtual address?

VRRP uses the virtual MAC address format 0000.5E00.01xx, where xx is the VRRP group number in hexadecimal. Option A, 0000.5E00.010a, matches that reserved VRRP pattern and represents group 10. Cisco HSRP uses a different well-known format, commonly 0000.0C07.ACxx for HSRP version 1, which is why option C points toward HSRP rather than VRRP. The other choices do not match the VRRP virtual MAC structure. In first-hop redundancy, the virtual IP address is used by hosts as their default gateway, while the virtual MAC address lets Layer 2 forwarding continue to work when the active gateway changes. CCNA 200-301 v1.1 IP Connectivity requires candidates to identify FHRP concepts including HSRP and VRRP. The verified answer is A. Reference: Cisco First Hop Redundancy Protocol behavior and VRRP virtual MAC addressing.