Which statement is correct about network device addressing?

Each network device must have a unique address to ensure proper communication within the network. A unique address allows devices to identify each other, send and receive data accurately, and prevent conflicts or confusion that can arise from address duplication. In the context of IP addressing, every device connected to a network must possess a distinct IP address that enables it to communicate with other devices, whether within a local area network or across the internet.

While it is true that addresses can technically be reused in different networks (as mentioned in another choice), that does not negate the necessity for uniqueness within a specific network segment. Moreover, IP addresses are not exclusive to routers; they are assigned to all devices requiring network connectivity, including computers and smartphones. MAC addresses are designed to be hardware identifiers and do not typically change with reboots, making option A the most accurate statement regarding network device addressing.