CCNA: Cisco Certified Network Associate — Question 112

Which three statements about MAC addresses are correct? (Choose three.)

Answer options

• A. To communicate with other devices on a network, a network device must have a unique MAC address
• B. The MAC address is also referred to as the IP address
• C. The MAC address of a device must be configured in the Cisco IOS CLI by a user with administrative privileges
• D. A MAC address contains two main components, the first of which identifies the manufacturer of the hardware and the second of which uniquely identifies the hardware
• E. An example of a MAC address is 0A:26:B8:D6:65:90
• F. A MAC address contains two main components, the first of which identifies the network on which the host resides and the second of which uniquely identifies the host on the network

Correct answer: A, D, E

Explanation

Option A is correct because each network device requires a unique MAC address for communication. Option D is correct as it accurately describes the structure of a MAC address. Option E is a valid example of a MAC address. Options B and C are incorrect; the MAC address is not the same as an IP address, and it does not need to be configured by an admin in the Cisco IOS CLI. Option F incorrectly describes the components of a MAC address.