A number would typically represent what type of source?

• A. Microphone
• B. Camera
• C. Graphics
• D. Monitor

Answer: (B)

In live broadcast setups, sources are mapped to inputs, and each input is given a numeric label. A number typically identifies a camera input because each camera is connected to a dedicated video input on the switcher and labeled as camera 1, camera 2, and so on. This makes it easy for the operator to switch between live feeds by selecting the corresponding input number. Microphones are audio sources and are usually not identified by a simple number in the same way, graphics feeds are labeled as CG/graphics, and monitors are outputs, not the incoming sources being switched.