By default, what virtual MAC address does HSRP group 15 use?
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Correct answer: 00:00:0c:07:ac:0f.
Why this is the answer
The correct answer is 00:00:0c:07:ac:0f. HSRP (Hot Standby Router Protocol) uses a specific virtual MAC address format. The first three octets, 00:00:0c, are the Cisco OUI (Organizationally Unique Identifier). The next two octets, 07:ac, are fixed for HSRP. The last octet represents the HSRP group number in hexadecimal. For group 15, the hexadecimal representation is 0f. Therefore, the virtual MAC address for HSRP group 15 is 00:00:0c:07:ac:0f. The other options do not follow the standard HSRP virtual MAC address format.
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