In the example allow MAC rule, what is the MAC address?

• A. 11:11:11:11:11:11
• B. 33:33:33:33:33:33
• C. 00:d0:59:aa:af:80
• D. 22:22:22:22:22:22

Answer: (C)

MAC addresses identify a specific device on an Ethernet network, and an allow rule targets a single host by its MAC. In the example, the address that matches that rule is 00:d0:59:aa:af:80. It’s a unicast MAC address (the first octet has a 0 in the least-significant bit), which is exactly what you’d use for permitting traffic from one particular device. The other options are not the address used in the example rule: 33:33:33:33:33:33 is a multicast pattern commonly seen with IPv6, and the remaining addresses do not correspond to the host described in the rule or capture.