What type of address unicastmulticastbroadcast localglobal i

What type of address (unicast/multicast/broadcast, local/global) is the following IEEE802 MAC address?

a. C4:6E:1F:01:DB:B1

b. B7:2A:76:D3:F2:CD

a. C4:6E:1F:01:DB:B1

First Octet is C4 = 1100 0100 (b7 b6 b5 b4 b3 b2 b1 b0)

b0 is 0, so it is unicast

b1 is 0, so it is global

Global-Unicast

b. B7:2A:76:D3:F2:CD

First Octet is B7 = 1011 0111 (b7 b6 b5 b4 b3 b2 b1 b0)

b0 is 1, so it is multicast

b1 is 1, so it is local

Local-Multicast