What term describes a link between two devices via a single cable, or when a routing packet source and destination are in the same physical network?

• A. Direct
• B. Dial-ups
• C. DNS Poisoning
• D. Differential Backup

Answer: (A)

Direct describes a direct link between two devices that uses a single cable—the straightforward point-to-point connection where the two hosts can talk without an intermediate router. When the sender and receiver are on the same physical network, the network layer hands the frame directly to the destination using its MAC address after ARP resolves it. This is why no routing hop is needed and communication happens within the local network.

Dial-ups refer to remote connections over telephone networks, not a single-cable two-host link. DNS Poisoning is an attack on name resolution, not a communication method. Differential Backup is about preserving data changes over time, not network topology.