You are getting complaints from Cisco Unified Wireless IP Phone 7925 users that their phones are failing to register with the Cisco Unified Communications Manager Express server and are showing the message “Registering.” What is the problem?

QUESTION 71
You are getting complaints from Cisco Unified Wireless IP Phone 7925 users that their phones are failing to register with the Cisco Unified Communications Manager Express server and are showing the message “Registering.” What is the problem?
A. The IP phones are failing to receive a DHCP address from the DHCP server.
B. There is no ephone configuration for each phone in the Cisco Unified CME device.
C. The IP phones are failing to receive their firmware files from the TFTP server.
D. The DHCP server needs to include the command option 66 ip to serve the appropriate load file.