What are two benefits of using the Cisco Ceiling Microphone?(Choose two)
Answer : C, D
https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/telepresence-microphones/datasheet-c78-736073.html
What is based on the Bootstrap Protocol (BOOTP) and provides the framework for passing configuration information to hosts on a TCP/IP network?
Answer : B
https://www.cisco.com/c/en/us/td/docs/routers/asr920/configuration/guide/ipaddr-dhcp/16-12-1/b-dhcp-xe-16-12-asr920/b-dhcp-xe-16-11-asr920_chapter_00.pdf
The Dynamic Host Configuration Protocol (DHCP) is based on the Bootstrap Protocol (BOOTP), which provides the framework for passing configuration information to hosts on a TCP/IP network. DHCP adds the capability to automatically allocate reusable network addresses and configuration options to Internet hosts.
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 )
Answer : D, E
Which screen size does the Cisco DX80 offer?
Answer : C
Connect with your team right from your desk with this Cisco Webex DX80 Desktop Collaboration System. The 23-inch LCD monitor with 1920 x 1080 resolution provides optimal clarity for video calls.
https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/webex-desk-series/datasheet-c78-731879.html
Which VoIP network component provides Call Admission Control (CAC), bandwidth control and management, and address translation?
Answer : A
Gatekeeper: A gatekeeper provides Call Admission Control (CAC), bandwidth control and management, and address translation.
http://what-when-how.com/cisco-voice-over-ip-cvoice/voip-fundamentals-introducing-voice-over-ip-networks-part-1/
What is an example of a video codec?
Answer : C
https://en.wikipedia.org/wiki/Video_coding_format#:~:text=Examples%20of%20video%20coding%20formats,RV40%2C%20VP9%2C%20and%20AV1.
How do digital voice networks function?
Answer : D