Implementation Manager (IM) Specialist CHTS Practice Test

What type of addresses does the Data Link Layer utilize?

1. IP addresses

2. Logical addresses

3. Physical addresses

4. Network addresses

The correct answer is: Physical addresses

The Data Link Layer predominantly uses physical addresses, which are also known as MAC (Media Access Control) addresses. These addresses are unique identifiers assigned to network interfaces for communication on the physical network segment. Unlike higher layer addressing methods that are used in the network layer and above—such as IP addresses—the physical addresses at the Data Link Layer are concerned with the local connection between devices. Physical addresses facilitate the transfer of data between devices on the same local network, allowing for essential functions like frame delimitation and error checking. Through these addresses, data packets can be correctly directed to their respective networked devices during transmission, enabling effective network communication. This differentiation between types of addresses is crucial, as other address types such as logical addresses (like IP addresses) are utilized at higher layers, focusing more on routing data over a broader network rather than direct communication between devices on the same local network. Similarly, network addresses often refer to logical addressing schemes used above the Data Link Layer, which further elaborates on their distinct operational roles.