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Huawei H11-861_V4.0 Exam Syllabus Topics:
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NEW QUESTION # 14
An endpoint is disconnected from a conference due to a power failure. After the endpoint is powered on again, it is not called to the conference again, and the SMC does not detect that the endpoint is disconnected. The SMC O&M engineer finds that this fault is caused by the "Timeout for hang-up upon no code streams" parameter on the CloudMCU. Which of the following parameter values may cause this fault? (Choose all that apply.)
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C,D
Explanation:
Setting the timeout to 0 or -1 disables the automatic hang-up when no media streams are received, so the MCU never tears down the call and SMC doesn't detect the endpoint has dropped.
NEW QUESTION # 15
Assume endpoints T1 and T2 are registered with the same SC node zone. After T1 calls the number of T2 using H.323, T1 and T2 communicate with each other. Which of the following statements are true about the call process? (Choose all that apply.)
- A. In this process, the H.225 call signaling interaction between T1 and T2 must pass through the SC.
- B. Endpoint control signaling involved in this process mainly includes H.225 RAS, H.225 Call Signaling, and H.245.
- C. In this process, the media stream must be directly transmitted between T1 and T2.
- D. In this process, the H.225 RAS signaling interaction between T1 and T2 must pass through the SC.
- E. 225 RAS messages (registration, admission, status) always traverse the SC (gatekeeper) for endpoints in the same zone.
Answer: B,C,D
Explanation:
RTP media is exchanged directly between T1 and T2 once the call is established.
The call control sequence involves H.225 RAS (registration/admission), H.225 call signaling (SETUP/CONNECT), and H.245 control for capabilities.
NEW QUESTION # 16
FILL in BLANK
In an SVC intelligent forwarding conference, if an SVC participant requires to view 1080p video, the bandwidth of the SVC participant must be at least ____________ Mbit/s. (Enter an Arabic numeral.)
Answer:
Explanation:
6
Explanation:
In an SVC intelligent forwarding conference, delivering 1080p (1920×1080) at 30 fps requires approximately 6 Mbit/s of bandwidth to carry the base and enhancement layers needed for full-HD reconstruction.
NEW QUESTION # 17
By default, a single registration SC server supports a maximum of 20,000 registered devices.
- A. TRUE
- B. FALSE
Answer: A
Explanation:
By default, a Registration SC server supports up to 20,000 registered devices, as specified in the Huawei SC product specifications.
NEW QUESTION # 18
The MCU debugging command "mswt-media config_info" is used to query the configuration information about media exchange.
- A. FALSE
- B. TRUE
Answer: A
Explanation:
The mswt-media config_info command displays static media configuration parameters; querying actual media-exchange status requires the mswt-media exchange_info command.
NEW QUESTION # 19
The virtual conference ID range of the SMC video conferencing system is set to 9100000 to 9299999. Which of the following may be the ID of a new common conference (that is not bound to a VMR)? (Choose all that apply.)
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C,D
Explanation:
Only IDs within the configured range 9100000-9299999 are valid for new common conferences; 9288889 and 9100009 fall in this range, whereas 9688889 and 9300001 do not.
NEW QUESTION # 20
The SMC system O&M engineer John wants to start and stop the SC database (version V600R019C10SPCb20 or later). Which of the following user roles can be used to perform such operations on the database?
- A. root
- B. sc
- C. vcexpert
- D. gauss
Answer: D
Explanation:
The SC's underlying database is a GaussDB cluster, and only the dedicated database OS user (gauss) has the necessary permissions to start and stop it using the GaussDB control utilities.
NEW QUESTION # 21
The main functions of H.245 include capability negotiation, video encoding, and master-slave determination.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION # 22
In a hybrid multistream conference, SVC and AVC endpoints can join the conference at the same time. By default, the system provides the same continuous presence experience as the AVC conference.
- A. TRUE
- B. FALSE
Answer: A
Explanation:
In a hybrid multistream conference, the MCU's built-in media resources run in dual-mode (AVC+SVC) intelligent adaptation by default, and when SVC and AVC participants view each other, the system automatically delivers the same continuous-presence layout and experience as in an AVC (universal transcoding) conference.
NEW QUESTION # 23
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.)
- A. An audio loop exists. The external audio device feeds back the sound from the endpoint output port to the endpoint input port.
- B. The endpoint's input volume is lower than the minimum energy threshold required for echo cancellation.
- C. Another participant whose speaker is turned off is at the local site.
- D. The microphone is too close to the speaker.
Answer: A,B,D
Explanation:
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.
NEW QUESTION # 24
Which of the following statements are true about the multi-level protection of the collaboration hardware platform? (Choose all that apply.)
- A. Power supply backup is provided.
- B. Network port backup is provided.
- C. Disk backup (RAID) is provided.
- D. Fan backup is provided.
Answer: A,B,C,D
Explanation:
The collaboration hardware platform implements full redundancy: network ports, fans, power supplies, and disks (RAID) - to ensure high availability and fault tolerance.
NEW QUESTION # 25
Which of the following MCU debugging commands is used to display detailed information about a specified conference?
- A. conf get strmInfo [confnum]
- B. conf get csdchaninfo [confnum]
- C. conf get [confNum]
- D. conf get iaures [confNum]
Answer: C
Explanation:
The generic conf get [confNum] command retrieves comprehensive details for the specified conference, whereas the other commands show only specific aspects (IAU resources, stream info, or channel info).
NEW QUESTION # 26
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)?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
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.
NEW QUESTION # 27
Which of the following statements is false about SVC intelligent forwarding conferences?
- A. In an SVC intelligent forwarding conference, the Box 310/610 can join a conference with the SVC capability.
- B. In an SVC intelligent forwarding conference, the video resolution viewed by each participant varies depending on the endpoint bandwidth and capability of SVC participants.
- C. In an SVC intelligent forwarding conference, an SVC endpoint can send a maximum of six channels of video streams to the MCU.
- D. When the MCU works in SFU mode, the SVC intelligent forwarding conference is supported.
Answer: C
Explanation:
In an SVC intelligent forwarding conference, SVC endpoints transmit up to four video channels (base plus enhancement layers) to the MCU for forwarding; they do not send six channels.
NEW QUESTION # 28
Which of the following NEs' information cannot be collected using the diagnostic information collection function (Maintenance > Diagnostic Info Collection) on the SMC web interface?
- A. Box 310
- B. SMC
- C. RSE8800
- D. HW CloudLink
Answer: A
Explanation:
The Diagnostic Information Collection feature in the SMC web UI gathers logs and status from managed hardware network elements, such as SMC-connected SC nodes, RSE8800 recording engines, and Box 310 endpoints, by selecting their device types in Maintenance > Diagnostic Info Collection. It does not support collecting diagnostic data from software clients like Huawei CloudLink.
NEW QUESTION # 29
When the SMC is used to provision system administrator users, each user can be bound to an endpoint that is used as the conference joining device of the user.
- A. FALSE
- B. TRUE
Answer: A
Explanation:
System administrator accounts in the SMC are management-only and do not support binding to endpoints for use as conference-joining devices; endpoint binding applies only to conference user or room accounts.
NEW QUESTION # 30
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