What type of jacks are used to verify frequency in VIDS?

The correct choice, which identifies the type of jacks used to verify frequency in the Voice Intercommunication and Distribution System (VIDS), is VHF and UHF.

VHF (Very High Frequency) and UHF (Ultra High Frequency) are specific ranges of frequencies that are commonly utilized in various communication systems, including radio and television broadcasting. In the context of VIDS, these frequency bands are essential for ensuring that communication signals are transmitted and received effectively. By using VHF and UHF jacks, technicians can interface with devices that operate on these frequencies, allowing for testing and verification of signal integrity and performance within the system.

Coaxial jacks are primarily used for transmitting cable signals rather than specifically verifying frequency, while USB (Universal Serial Bus) jacks are used for data transfer and power supply in digital devices and do not pertain to frequency testing. Fiber optic jacks are used for high-speed data transmission over light signals but do not apply to frequency verification in the context of VIDS. Therefore, VHF and UHF are uniquely suited for the needs of testing frequency in this specific system.