Given the multicast IP address of 224.193.5.10, what would the corresponding multicast MAC address be?
A. 00-00-0c-c0-05-0a
B. 00-00-0c-cl-05-0a
C. 01-00-5e-00-00-0c
D. 01-00-5e-41-05-0a
E. 00-00-0c-01-00-5e
F. 01-00-5e-cl-05-0a
What would the corresponding multicast MAC address be?
D
The 24-bit MAC address prefix 01-00-5E is reserved for layer 2 multicast. Unfortunately only half of the MAC addresses in this 24-bit prefix can be used for multicast, this means we only have 23 bits of MAC address space to use for multicast.
i wonder what is “l” doing in hexadecimal mac address format…
Answer : D. Because 193.5.10 = 11000001 00000101 00001010
Change first number 1 to 0 => 0100 0001 0000 0101 0000 1010 => c1-05-0a
The answer is D: 01:00:5e:41:05:0a