H11-861 Online Practice Questions and Answers

SEC is Super error concealment using the ARQ algorithm. ( )

A. TRUE

B. FALSE

In RTP packet, the timestamp reflects the sampling instant of the first octet in the RTP data packet. The

sampling instant must be derived from a clock that increments monotonically and linearly in time to allow

synchronization and jitter calculations.

The initial value of the timestamp should be random. It increases by 1 with each increasing packet. ( )

A. TRUE

B. FALSE

Users can dial a conference ID and follow the IVR instructions to create a video conference.( )

A. TRUE

B. FALSE

The six call steps of H.323 apply to all H.323 terminals. ( )

A. TRUE

B. FALSE

MCUs assigned to the same service area must share a prefix. ( )

A. TRUE

B. FALSE

When you schedule a conference, a message is displayed to indicate insufficient IP port resources. Meanwhile, the MCU used to host the conference is online and has sufficient IP ports. What are the possible causes for this situation. ( ) (Select 2 answers)

A. No MCU resources are available for the service area;

B. The license resources are insufficient.

C. The site protocol and transmission rates do not match.

D. The MCU has not registered with the GK.

One of the primary uses of RTCP is reception quality reporting, which is accomplished through RTCP receiver report (RR) packets, which are sent by all participants who receive data; ( )

A. TRUE

B. FALSE

If the color rendering index is large, the image color saturation decreases and the video image reproduces a color that is greatly different from the true color.( )

A. TRUE

B. FALSE

RTCP provides for loose membership control through RTCP SDES packets, which indicate that some participants have left the session. A SDES packet is generated when a participant leaves the session/ or when it changes its SSRC. ( )

A. TRUE

B. FALSE

The HD endpointssupport the ITU-T G.711, G.722, G.728, AAC-LD (mono-or binaural-audio channel), and HWA-LD audio protocols, showing a strong audio compatibility( )

A. TRUE

B. FALSE