Which Cisco IOS multipoint video conferencing profile is also known as best-effort video on the Cisco Integrated Router Generation 2 with packet voice and video digital signal processor 3?
Three types of video profiles are supported: homogeneous conferences (video switching), heterogeneous conferences (video mixing), and guaranteed audio conferences (best-effort video)
As the name suggests, when Guaranteed Audio Conferences is configured, the system attempts to display video for all participants; however, it does not guarantee that the video of all participants is displayed.
For those participants whose video is not displayed, participants are downgraded to audio-only and the profile guarantees preservation of the audio portion of the call.
This option gives you added flexibility because the DSPs are not all reserved when the profile is created; the system attempts to reserve them when this profile is activated with an actual conference.
For example: dspfarm profile 1 conference video guaranteed-audio codec h264 vga codec h264 4cif References: http://www.cisco.com/c/en/us/products/collateral/unified-communications/voice-video-conferencing-isr-routers/qa_c67-649850.html.
The correct answer is E. flex mode video.
In Cisco IOS, a multipoint video conferencing profile is a configuration template that defines the behavior of the router when it participates in a video conference with multiple endpoints. Different profiles prioritize different types of traffic, allocate different amounts of bandwidth, and implement different video codecs and resolutions.
On the Cisco Integrated Router Generation 2 with Packet Voice and Video Digital Signal Processor 3 (ISR G2 PVDM3), the recommended multipoint video conferencing profile for best-effort video is flex mode video. Flex mode video is a flexible profile that dynamically adjusts the video quality based on the available network bandwidth. It uses the H.264 video codec, which is known for its efficient compression and low bandwidth requirements. Flex mode video also supports multiple resolutions, from 720p to QCIF, depending on the capabilities of the endpoints.
The other options listed in the question are:
A. Homogeneous: This profile is designed for video conferences where all the endpoints have the same capabilities and use the same video codec and resolution.
B. Guaranteed-audio: This profile prioritizes audio traffic over video traffic, ensuring that audio quality is maintained even when the network is congested.
C. Rendezvous: This profile is used for scheduled video conferences where the endpoints connect to a central bridge or MCU.
D. Heterogeneous: This profile is designed for video conferences where the endpoints have different capabilities and use different video codecs and resolutions.
In summary, the recommended multipoint video conferencing profile for best-effort video on the Cisco Integrated Router Generation 2 with Packet Voice and Video Digital Signal Processor 3 (ISR G2 PVDM3) is flex mode video, which dynamically adjusts the video quality based on available bandwidth and supports multiple resolutions using the H.264 video codec.