Which of the following describes the status of the radio during VHF/UHF Backup Control operations?

During VHF/UHF Backup Control operations, the radio's CNC (Control Network Communication) and MCD (Multi-Channel Display) functions are indeed inhibited. This means that while the radio is still usable for communication, certain advanced control functions that typically enhance operational capabilities and user interface are not available. This limitation is crucial for operators to understand, as the backup mode is primarily designed for situations where primary systems may fail or become unreliable.

In this operational mode, the focus is on ensuring basic communication remains intact even when automatic systems are compromised. It allows pilots to manually switch to backup controls and communicate effectively, albeit with a reduced set of functions. Being aware of this helps operators maintain situational awareness and manage communications effectively in the event of a primary system failure.