Signaling refers to which of the following?

• A. Sending and receiving of control information between parts of a telecommunications network.
• B. A central toll call recording system.
• C. A screen capture recorder.
• D. A data backup method.

Answer: (A)

Signaling is the exchange of control information that coordinates how a telecommunications network sets up, maintains, and terminates calls and services. It carries instructions like call setup, routing decisions, feature negotiation, authentication, and billing signals, while the actual voice or data content flows separately on the user path. This is why the option describing sending and receiving of control information between parts of the network is the best choice. The other options describe tasks such as recording toll calls, screen capture, or data backup, which are not about the control messaging that coordinates network operations.