Implementing Cisco Collaboration Devices (CICD, legacy) — Question 71

Which two errors cause a Cisco phone to reset? (Choose two.)

Answer options

• A. The MAC address is not registered in Cisco Unified Communications Manager and change is applied
• B. The TCP connection fails while connected to Cisco Unified Communications Manager
• C. Proper keep alive is not received from Cisco Unified Communications Manager
• D. The IP address is incorrectly configured
• E. The device does not receive timing from Cisco Unified Communications Manager server BC

Correct answer:

Explanation

The correct answers are A and C. When the MAC address is not registered, the phone cannot authenticate, causing a reset, and if the keep-alive packets are not received, the phone assumes it has lost its connection and will reset. Options B, D, and E do not directly cause a reset; while they can affect communication, they do not trigger an immediate reboot of the device.