By default, which virtual MAC address does HSRP group 12 use?
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Correct answer: 00:00:0c:07:ac:0c.
Why this is the answer
The correct answer is 00:00:0c:07:ac:0c. HSRP (Hot Standby Router Protocol) uses a specific MAC address format for its virtual MAC addresses: 00:00:0c:07:ac:XX, where XX is the HSRP group number in hexadecimal. For HSRP group 12, the decimal value 12 converts to the hexadecimal value '0c'. Therefore, the virtual MAC address for HSRP group 12 is 00:00:0c:07:ac:0c. The other options do not follow the standard HSRP virtual MAC address format. 00:05:5e:00:0c:12 is the VRRP virtual MAC address format. 00:5e:0c:07:ac:12 and 05:43:84:57:29:2c are not standard virtual MAC address formats for common first-hop redundancy protocols.
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