By default, which virtual MAC address does HSRP group 32 use?

Question

Options

• A00:5e:0c:07:ac:20
• B04:18:20:83:2e:32
• C05:5e:5c:ac:0c:32
• D00:00:0c:07:ac:20

• A
  2% (1)
• B
  4% (2)
• C
  7% (4)
• D
  87% (47)

Explanation

HSRP Virtual MAC Address Explanation

HSRP uses a well-known virtual MAC address format of 00:00:0c:07:ac:XX, where "XX" is the HSRP group number in hexadecimal - for group 32, that value is 0x20 (32 in hex), giving us 00:00:0c:07:ac:20, making option D correct. Option A is incorrect because it begins with 00:5e, which is associated with VRRP (Virtual Router Redundancy Protocol), not HSRP. Option B and C are fabricated addresses that don't follow any real HSRP or industry-standard format. Options B and C use incorrect OUI prefixes that don't belong to Cisco's HSRP implementation.

Memory Tip: Think of the HSRP MAC as "00:00:0C = Cisco, 07:AC = HSRP signature, + group in HEX." Just remember to convert the group number to hexadecimal for the last octet - group 32 = 0x20, group 1 = 0x01, etc. Also, use the "5e" prefix as your trigger to think VRRP, not HSRP, to avoid that common trap on exam day.

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