do the math its always -6
so if you get the HSRP for group 22 then you do (22-6=16).
another whats for group 16 then you do (16-6=10).
just remember for this question do the -6
###Shortcut way of Decimal to Hexadecimal converting###
22/16 > 1 and remainder 6 > 16
###Another example###
For 254,
254/16 > 15, and remainder 14. 15 is F and 14 is E in Hax. So if you would like to convert the value of 254, the answer is FE in Hexadacimal.
Think Binary for HSRP - split the last octet into two:
.128 .64 .32 .16 | .8 .4 .2 .1
0 0 0 1 0 1 1 0
Now make the number 16 out of Binary starting from the right to left^
Add the 2 numbers together from each slice of the octet you get 16
HSRP v1 uses the virtual MAC address of 0000.0c07.acxx where xx represent the group number. when replacing the 2 last digits xx with 22 we getting: 00.00.0c.07.ac.22. That's means "C" is the correct answer.
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