Master Huawei H11-861_V4.0 Exam with Reliable Practice Questions
Upgrade to PremiumAssume that a channel of 4CIF analog TV signal uses a 48-bit color depth. Which of the following is nearest to the stream transmission speed of the signal before compression and encoding?
Correct : D
4CIF (704576) at 30 fps gives 704 576 30 12.17 million pixels/s. At 48 bits per pixel, that's 12.17 M 48 584 Mbit/s, which is nearest to 600 Mbit/s.
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An AVC conference is scheduled on the CloudMCU (working in SFU mode) and VP9850 (working in IAU mode). After the conf get strmInfo 41353221 command is executed on the CloudMCU, the following information is displayed:
Which of the following is the video stream number generated after the IAU decodes and re-encodes the three video streams of Site (16), Site (17), and Site (18)?
Correct : D
In SFU+IAU mode, the IAU's re-encoded (decoded and encoded) streams are identified by the MpAdaptStrmNo value under Site(18). In the output, MpAdaptStrmNo[2710124429803] is the stream number carrying all three re-encoded video channels.
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In a Huawei video conference, which of the following may cause echoes or even high-pitched noises when the local participant speaks? (Choose all that apply.)
Correct : A, C, D
If the input volume falls below the echo canceller's detection threshold, the device can't identify and suppress return audio, leading to echoes or squealing.
An audio loop, where output is fed back into the input, directly causes echo and feedback noise.
Placing the microphone too close to the speaker allows direct pickup of its output, resulting in echo and potential high-pitched feedback.
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In the collaboration solution architecture, which of the following network elements are deployed at the media processing layer? (Choose all that apply.)
Correct : B, C
The media processing layer handles core media functions such as audio/video encoding, decoding, mixing, recording, and streaming. The VP9860 is Huawei's MCU media server - deployed precisely in this media processing (media switching) layer to provide high-density encoding/decoding and mixing capabilities. CloudRSE (Cloud Recording & Streaming Engine) delivers recording and streaming services, which are also key media processing functions within this layer.
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By default, the SMC provides six user roles. Default permissions of each user role can be modified or deleted based on site requirements.
Correct : B
The SMC indeed provides six built-in user roles (system administrator, security administrator, security auditor, program administrator, conference administrator, and common user), but their default permissions are fixed and cannot be modified or removed.
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