Automatic screen switching occurs in response to which failure?

Automatic screen switching occurs in response to which failure?

• A. ED1
• B. ED2
• C. DCU
• D. LDU

Answer: (A)

Automatic screen switching relies on a redundant display setup where ED1 is the primary screen and ED2 acts as the backup. The system continuously monitors ED1, and when ED1 stops functioning, the control logic automatically routes the display to ED2 so you don’t lose visibility of critical information. That’s why ED1 failure is the trigger for the switch—the fault in the primary display prompts the failover. The other components (ED2, DCU, LDU) aren’t the events that cause the switch in this arrangement, so they don’t drive the automatic screen swap in the same way.

Automatic screen switching relies on a redundant display setup where ED1 is the primary screen and ED2 acts as the backup. The system continuously monitors ED1, and when ED1 stops functioning, the control logic automatically routes the display to ED2 so you don’t lose visibility of critical information. That’s why ED1 failure is the trigger for the switch—the fault in the primary display prompts the failover. The other components (ED2, DCU, LDU) aren’t the events that cause the switch in this arrangement, so they don’t drive the automatic screen swap in the same way.