Correct Answer:
B. Media Access Control
A MAC address is a unique identifier assigned to network interfaces for communications at the data link layer of a network segment. It's often referred to as a physical address.
- Media Access Control is the correct answer. MAC stands for Media Access Control. The MAC address is part of the Media Access Control sublayer of the Data Link Layer (Layer 2) in the OSI model. This sublayer is responsible for controlling how devices on the network gain access to the medium and permission to transmit data. It ensures that data is correctly addressed to the intended recipient on a local network segment.
- Memory Access Control is incorrect. This term relates to how a CPU accesses memory, not network addressing.
- Master Access Code is incorrect. This term is not standard in networking and typically refers to a security code or password.
- Main Access Cell is incorrect. This term does not have a recognized meaning in the context of network addressing or MAC addresses.