What is the primary purpose of an IP address?

What is the primary purpose of an IP address?

• A. To identify the application protocol
• B. To assign MAC addresses
• C. To uniquely identify a host on a network and enable routing
• D. To encrypt data

Answer: (C)

IP addresses serve as unique logical identifiers for hosts across networks and enable routing between those hosts. They let data know where to go across multiple networks by providing a address the routers can use to forward packets toward the destination, with each device having a distinct address within its network and a path to reach it across the internet. This is different from MAC addresses, which are hardware identifiers used only on a local network; IP addresses are routable and can move between networks. IP does not by itself encrypt data—encryption is handled by other protocols such as TLS or IPsec—and IP addresses aren’t about identifying application protocols (that role belongs to ports and higher-level services).

IP addresses serve as unique logical identifiers for hosts across networks and enable routing between those hosts. They let data know where to go across multiple networks by providing a address the routers can use to forward packets toward the destination, with each device having a distinct address within its network and a path to reach it across the internet. This is different from MAC addresses, which are hardware identifiers used only on a local network; IP addresses are routable and can move between networks. IP does not by itself encrypt data—encryption is handled by other protocols such as TLS or IPsec—and IP addresses aren’t about identifying application protocols (that role belongs to ports and higher-level services).