There is not universal agreement on the names of the layers in the TCP/IP networking model. Which of the following is one of the functions of the bottom layer which is sometimes called the Network Access or Link Layer?

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D. Defines the procedures for interfacing with Ethernet devices The Network Access/Link layer defines the procedures and protocols for interfacing directly with network hardware such as Ethernet, including frame formatting, MAC addressing, and physical transmission. This layer maps to OSI Layers 1 and 2 and handles technology-specific communication details that higher layers abstract away.

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A. Provides end-to-end data delivery service for user applications End-to-end data delivery for user applications is the responsibility of the Transport layer (TCP/UDP), not the Network Access/Link layer.

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B. Handles the routing of the data packets over the network Routing of data packets across networks is the function of the Internet layer (IP), not the Network Access/Link layer.

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C. Manages IP addressing and encryption for data packets IP addressing is managed by the Internet layer, not the Network Access/Link layer, and link-layer encryption is not a primary function defined at this layer.

There is not universal agreement on the names of the layers in the TCP/IP networking model. Which of the following is one of the functions of the bottom layer which is sometimes called the Network…

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