Which of the following statements about ARP tables is accurate?

The accurate statement about ARP (Address Resolution Protocol) tables is that they map IP addresses to MAC addresses. ARP plays a crucial role in enabling communication within a local network. When a device needs to send data to another device on the same local network, it must know the destination device's MAC address, which is associated with its IP address. The ARP table stores these mappings, facilitating efficient communication without needing to constantly query the network for details.

Each entry in the ARP table typically includes an IP address and the corresponding MAC address. This allows devices to quickly reference the information, thereby reducing latency in data transmission.

The other statements differ from the accurate depiction of ARP functionality. For instance, ARP tables do not map IP addresses to DNS (Domain Name System); rather, they focus solely on the relationship between IP addresses and their corresponding MAC addresses. Additionally, while ARP tables may contain cached MAC addresses, they do not only include cached entries but also actively manage incoming ARP requests and responses. Furthermore, ARP is not exclusively used by routers; it is utilized by all devices on a local area network, such as computers and switches, to facilitate direct communication.