Developing Applications and Automating Workflows Using Cisco Platforms (DEVASC) — Question 11

What is the purpose of a MAC address?

Answer options

• A. to uniquely identify a switch in a LAN
• B. to uniquely identify a router in a LAN
• C. to uniquely identify a network interface in a LAN
• D. to uniquely identify a device on the Internet

Correct answer: C

Explanation

A MAC address serves to uniquely identify a network interface on a local area network (LAN), which is why option C is correct. Options A and B are incorrect because they refer specifically to switches and routers, while option D is misleading as MAC addresses are used primarily within a LAN, not on the Internet.