Which Cisco IOS multipoint video conferencing profile reserves DSPs when it is created in the configuration?
The correct answer is C. Rendezvous.
In a multipoint video conference call, the video stream is processed by a Digital Signal Processor (DSP) which can be a hardware or software resource. The number of DSPs available on a device determines the maximum number of participants that can join a video conference.
When creating a Cisco IOS multipoint video conferencing profile, the administrator can specify the type of resource reservation mode to use.
The Rendezvous profile reserves DSPs when it is created in the configuration. This means that the DSPs required for the video conference are reserved for the duration of the conference, regardless of whether or not participants are actively sending or receiving video streams.
In contrast, the Flex Mode Video profile dynamically allocates DSPs based on the number of active participants in the call. This mode can be more efficient in terms of DSP usage, but it may result in lower call quality if there are insufficient resources available.
The Guaranteed-Audio and Guaranteed-Video profiles reserve DSPs for audio and video streams respectively, but only when those streams are active. The Heterogeneous profile allows for mixed types of video endpoints with different capabilities, but does not reserve DSPs.