Which two devices can provide a Cisco IP phone the network connection and power necessary for the phone to function in the IP telephony network? (Choose two)

Which two devices can provide a Cisco IP phone the network connection and power necessary for the phone to function in the IP telephony network? (Choose two)
A . IP phone power adapter with Ethernet port
B . Cisco Unified Communications Manager PoE port
C . Cisco TelePresence codec
D . Cisco Voice Gateway PoE port
E . Cisco Catalyst PoE switch

Answer: D,E

Which two features are provided by the Cisco Unified Communications Manager signaling and device control function? (Choose two)

Which two features are provided by the Cisco Unified Communications Manager signaling and device control function? (Choose two)
A . quick dialing
B . phone book service
C . call tear-down
D . call setup
E . transmission of audio/video media between endpoints

Answer: C,D

Explanation:

✑ Signaling and device control: CUCM sets up all the signaling connections between call endpoints and directs devices such as phones, gateways, and conference bridges to establish and tear down streaming connections. Signaling is also referred to as call control and call setup/call teardown.

https://www.ciscopress.com/articles/article.asp?p=1216890&seqNum=2

To recover the phone what is the next approach?

While replacing a Cisco IP phone, the technician notices that the phone is not functional. The phone is receiving power from a Cisco Catalyst PoE switch, and the phone backup software image is loaded but the phone still fails to complete the bootup

To recover the phone what is the next approach?
A . verify the IP phone settings on the Cisco Unified CM
B . contact a Cisco TAC engineer
C . perform the factory reset on the IP phone
D . connect the IP phone to a different VLAN on another Cisco Catalyst switch

Answer: C

From which network service does a Cisco IP phone request the configuration file during the bootup process?

From which network service does a Cisco IP phone request the configuration file during the bootup process?
A . Cisco Unified Communications Manager
B . DHCP server
C . Cisco Catalyst switch
D . Phone’s local default configuration in the flash memory is used
E . TFTP server

Answer: E

Explanation:

https://community.cisco.com/t5/collaboration-voice-and-video/ip-phone-sccp-amp-sip-phone-registration-process-with-cucm/ta-p/3109183#:~:text=The%20phone%20contacts%20the%20TFTP%20server%20and%20re quests%20its%20configuration%20file.