Which indicator state represents an excellent signal?

• A. Solid Green
• B. Blinking Green
• C. Blinking Yellow
• D. Solid Red

Answer: (B)

Indicator states convey status at a glance by using color and motion. Green signals are positive, meaning the system is operating well. When that green is blinking, it adds the element of active, ongoing verification—data or signals are being refreshed continuously, so the condition is not only good but actively maintained. That combination means the signal is strong and reliable in real time, which is why blinking green represents an excellent signal. Solid green is good, but lacks the immediacy of active verification that blinking conveys. Blinking yellow suggests caution or suboptimal performance, and solid red indicates a failure or offline status.