Advanced Networking Administrator Test Prep

Answer: D - The network layer is in charge of translating network addresses into their physical counterparts and decides how to route data from the sender to the receiver.

Key Takeaway: The network layer provides the functional and procedural means of transferring variable length data sequences from a source to a destination via one or more networks. It performs network routing functions and might also perform fragmentation and reassembly, and report delivery errors. Routers operate at this layer, sending data throughout the extended network and making the Internet connection possible. An example of a Layer 3 protocol is the Internet Protocol (IP). It manages the connectionless transfer of data one hop at a time.