Question

at the network layer, what are ip source and destination addresses used to do?
forward packets to the proper destination
control access to the network based on device types
assign specific functions to devices within the network
monitor network traffic and data usage

Explanation:

The Network layer (Layer 3 of the OSI model) uses IP addresses to route data packets between different networks. The source IP identifies the sender, and the destination IP specifies the intended recipient, enabling routers to forward packets to the correct endpoint. The other options describe functions of different network layers or components (e.g., access control is Layer 2/7, device function assignment is not IP's role, traffic monitoring is a management task).

Answer:

A. Forward packets to the proper destination