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| Section | Weight | Objectives |
|---|---|---|
| Collaboration technology and product overview | 13% | - Huawei collaboration product features - Principles of enterprise collaboration solutions |
| Video conferencing protocols | 18% | - Basics of SIP - Basics of H.323 |
| MCU and recording/streaming solutions | 17% | - Recording/streaming solution basics - MCU deployment and operation |
| O&M of video conferencing endpoints | 28% | - Deployment and configuration of endpoints - Device performance monitoring and troubleshooting |
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問題 #38
Assume that a user holds a multipoint conference using the Huawei video conferencing system. After a participant is unmuted and broadcast, the microphones of the remaining participants are automatically muted.
Which conference-control operation can the user perform on the SMC to produce this effect?
答案：B
解題說明：
Huawei SMC provides conference-control functions that allow administrators to regulate participant audio, video, and presentation behavior during multipoint conferences.
The Giving the floor function assigns speaking priority to a selected participant. When this operation is performed, the selected participant's video is displayed to the other participants, and the microphones of the remaining participants are automatically muted.
Option C is therefore correct.
Option A, Free discussion, is intended to enable open interaction among participants. Huawei describes this function as unmuting participants and stopping the current broadcast, making it unsuitable for the scenario.
Option B, Locking a conference, restricts conference access or related operations according to the configured locking function. It does not implement the specific speaking-priority behavior described.
Option D, Muting all, applies microphone muting to participants collectively. It does not independently grant speaking priority and broadcast one selected participant while leaving that participant unmuted.
The Lab Guide explicitly describes Giving the floor as a conference-control operation in which other participants are muted and automatically view the specified participant.
This functionality is especially useful in formal meetings, presentations, administrative conferences, and other structured discussions where one participant must address the conference without interruption.
Huawei reference: Lab Guide, Section 4.5.1, Conference Control UI, PDF pages 104-105; Section 4.5.2, Giving the Floor, PDF pages 107-109. Training Material, Conference Control Functions.
問題 #39
In the video conferencing endpoint projection scenario, when an IdeaShare Key is used to project a PC screen, the PC and endpoint do not have to be on the same LAN.
答案：B
解題說明：
Huawei IdeaShare Key provides a plug-and-play wireless presentation-sharing mechanism that enables users to project computer content to compatible conferencing endpoints without requiring conventional client-based LAN connectivity.
The IdeaShare Key must first be paired with the target endpoint. During pairing, the key obtains the information required to establish the supported wireless projection connection.
After successful pairing, the user connects the IdeaShare Key to the computer and presses its button to initiate presentation sharing.
Unlike the IdeaShare software client, which requires the computer and endpoint to be on the same reachable LAN according to the Huawei Lab Guide, the IdeaShare Key uses its supported direct wireless projection mechanism.
Consequently, the computer and endpoint do not have to belong to the same LAN for IdeaShare Key projection.
Option A is correct.
The difference between these projection methods is important when designing conference-room connectivity.
Software-client projection depends on appropriate network communication between the computer and endpoint, whereas IdeaShare Key projection can operate without the computer participating in the endpoint's LAN.
Huawei's Training Material identifies IdeaShare Key as a plug-and-play presentation method that does not require a network connection for the computer.
The prerequisite is successful pairing and a supported wireless environment, not identical LAN membership.
Huawei reference: Training Material, PDF page 311, Multiple Projection Modes, and page 362, IdeaShare Key Projection. Lab Guide, Sections 1.3.1.7 and 1.3.1.8, Local Projection and Sharing.
問題 #40
If a remote site reports artifacts in local video during a conference, but the local video loopback test displays normal video, which of the following could be a possible cause of this issue?
答案：D
解題說明：
Video loopback testing isolates different sections of the conferencing media-processing path, allowing engineers to distinguish local image-processing problems from faults affecting transmission or reception at another endpoint.
Huawei's Training Material describes a local video loopback test as a means of checking the local video module. The relevant signal path processes video from the local camera and presents it on the local display without traversing the complete remote conferencing path.
If the local loopback image is normal, the camera input and basic local video-display path are functioning.
However, this result does not conclusively prove that the transmitted video is being encoded correctly.
Option B is therefore a possible cause. A defective local video encoder may generate corrupted compressed video even when the local preview remains normal.
Option A is not appropriate because the remote endpoint's encoder processes video transmitted from the remote site, not the local site's outgoing video.
Option D concerns local decoding of incoming video and is not the primary explanation for defects observed by the remote participant.
Verification concern: Option C is also technically possible. A malfunctioning remote decoder could produce artifacts when decoding otherwise valid video received from the local endpoint. The question does not include a test that distinguishes local encoding failure from remote decoding failure.
The intended answer is B, but the wording permits more than one plausible fault location.
Huawei reference: Training Material, PDF page 394, Loopback Test, including the local and remote video signal-flow table.
問題 #41
You can sign in to the SMC as a system administrator or conference administrator at https://SMC service IP address/sys-portal.
答案：B
解題說明：
Huawei SMC separates system management and conference operations through distinct web portals. This design supports role-based access control and prevents ordinary conference-management accounts from performing infrastructure administration.
The system management portal is accessed through the following address:
https://SMC service IP address/sys-portal
This portal is intended for authorized system-management accounts, particularly the system administrator. It provides access to device administration, organization and user provisioning, conference-room management, system configuration, and maintenance functions.
Conference administrators use the conference portal, accessed through:
https://SMC service IP address/conf-portal
The conference portal provides functions for conference scheduling, conference monitoring, participant management, and conference control.
Option B is correct because the statement incorrectly suggests that both system administrators and conference administrators can sign in to the system management portal using their respective roles.
The two account types have different responsibilities and access permissions.
System administrators are responsible for managing the collaboration platform and associated resources.
Conference administrators manage conferences within their authorized organizational scope.
Huawei's Training Material explicitly distinguishes the system portal from the conference portal, while the Lab Guide demonstrates system administrator login through the sys-portal address.
Therefore, the statement is false.
Huawei reference: Training Material, PDF pages 634-636, Initial Login and Functions of the System Management Portal; PDF pages 642-644, Conference Portal. Lab Guide, Section 3.2.1, Logging In as a System Administrator.
問題 #42
Which of these statements are true about the VP9800-T series MCU?
Choose three
答案：A,B,D
解題說明：
Huawei's VP9800-T series provides high-capacity media-processing functions that support AVC universal transcoding and SVC multistream forwarding within a converged MCU architecture.
Option A is correct. The Training Material specifies that VP9830-T, VP9850-T, and VP9860-T support up to
300 concurrent 1080p30 forwarding connections through the electrical-port configuration, subject to the documented operating conditions.
Option B is correct because the VP9830-T supports 64 concurrent 1080p30 participants in universal transcoding mode. The MCU uses its media-processing resources to accommodate participants requiring different media characteristics.
Option C is correct because the VP9800-T series supports H.265 4K universal transcoding and SVC multistream forwarding. These capabilities allow the MCU to support both high-quality traditional video conferences and bandwidth-efficient scalable video services.
Option D is incorrect. Huawei identifies the VP9800-T series as using its Kunpeng-based hardware architecture, rather than the dedicated x86 architecture specified in the option.
This distinction is important because Huawei offers different MCU product families with different hardware platforms.
Direct source confirmation: Huawei includes an equivalent multiple-answer question in the MCU module's own quiz and supplies the answer corresponding to these same three capabilities.
Huawei reference: Training Material, PDF page 41, VP9800(T) Series Fully-Converged Media Engine; PDF page 457, MCU Products and Features - Quiz, which explicitly supplies the equivalent answer.
問題 #43
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