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| Section | Weight | Objectives |
|---|---|---|
| O&M of video conferencing endpoints | 28% | - Deployment and configuration of endpoints - Device performance monitoring and troubleshooting |
| Video conferencing protocols | 18% | - Basics of H.323 - Basics of SIP |
| MCU and recording/streaming solutions | 17% | - MCU deployment and operation - Recording/streaming solution basics |
| Collaboration technology and product overview | 13% | - Principles of enterprise collaboration solutions - Huawei collaboration product features |
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NEW QUESTION # 49
Which of these CloudRSE user roles can release conference recordings?
Choose two
Answer: A,B
Explanation:
Huawei CloudRSE implements role-based access control to separate system administration, media-content management, ordinary video access, and guest viewing.
The recording and streaming server supports four user roles: system administrator, media administrator, common user, and guest. Each role has different permissions associated with managing and accessing recorded content.
Option A is correct because the system administrator possesses administrative authority over the CloudRSE platform and can manage recorded programs, including releasing recordings.
Option C is correct because the media administrator is specifically authorized to manage recording and streaming content. Its responsibilities include editing program information, managing video metadata, releasing recorded programs, and removing published recordings.
Option B is incorrect because guests are restricted to viewing public content made available to them. They cannot perform recording-release operations.
Option D is incorrect because common users do not possess the general media-administration permissions required for releasing recorded programs through the CloudRSE management interface.
Huawei's Lab Guide explicitly identifies the system administrator and media administrator as the roles authorized to manage and release recorded programs.
The documented release procedure is performed through Programs > Release Management > Videos to Be Released, where an authorized administrator selects the appropriate recording and clicks Release.
Therefore, the correct selections are A and C.
Huawei reference: Lab Guide, Section 4.7.9, Releasing Recorded Programs, PDF pages 148-149; Training Material, PDF pages 496 and 509-511, Role- and Right-based Management and Managing Permissions.
NEW QUESTION # 50
Which of the following statements describes Huawei Video Motion Enhancement (VME) technology?
Answer: A
Explanation:
Huawei Video Motion Enhancement (VME) is a proprietary video-processing technology designed to improve perceived image quality and produce clearer, more visually appealing conference video.
The technology combines several image-enhancement operations, including noise reduction, edge enhancement, blocking artifact removal, definition processing, and image-mode adjustment. These operations improve the appearance of compressed video and help preserve visual clarity under bandwidth-constrained conditions.
Option B is correct because it accurately identifies the image-processing functions associated with VME in Huawei's Training Material.
Option A describes an intelligent participant-identification function involving face detection and name tags.
This is not the fundamental purpose of VME.
Option C describes camera image-processing capabilities associated with low-light performance and digital wide dynamic range. Although noise reduction overlaps with VME functionality, the complete description concerns camera imaging technology rather than the specifically defined VME algorithm.
Option D describes automatic exposure, automatic white balance, and camera image-mode configuration.
These are camera adaptation functions.
Huawei combines VME with H.265 video encoding to improve overall visual performance. H.265 reduces the bandwidth required for compressed video, while VME enhances perceived image quality. This combination supports high-definition conferencing at relatively low transmission rates.
Huawei reference: Training Material, PDF page 188, H.265+VME, and page 53, Super PLC and Intelligent Bandwidth Prediction.
NEW QUESTION # 51
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?
Answer: B
Explanation:
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.
NEW QUESTION # 52
SEC's core technology generates verification packets before data is transmitted by using Huawei's proprietary data-verification algorithm. If packet loss occurs during transmission, these verification packets can restore the missing packets and ensure data reliability.
Answer: A
Explanation:
The statement describes a proactive packet-recovery mechanism in which redundant verification information is generated before transmission and subsequently used to reconstruct missing information if packet loss occurs.
This type of protection is technically consistent with forward error correction. Instead of relying exclusively on retransmitting missing packets after the receiver detects loss, the sender transmits additional information that can support recovery at the receiving endpoint.
Such mechanisms are particularly useful for real-time video conferencing, where retransmission delays may exceed the time available for smooth media playback.
Huawei's SEC technology is designed to improve packet-loss tolerance and maintain video quality under adverse network conditions. The Training Material confirms that SEC supports video protection at packet-loss rates reaching 30%, including scenarios involving 12 consecutively lost packets.
The described verification-packet process provides a technically coherent explanation of how a redundancy- based recovery mechanism could support these capabilities.
Nevertheless, the exact sequence involving Huawei's proprietary verification algorithm, generation of verification packets before transmission, and restoration of lost packets is not described in the supplied V4.0 Training Material or Lab Guide.
Verification finding: TRUE is a provisional technical interpretation, not a fully source-verified answer. The provided documentation establishes SEC's intended packet-loss protection capability but does not establish the specific proprietary algorithm described in the question.
Huawei reference: Training Material, Super PLC and Intelligent Bandwidth Prediction, PDF page 53; HW CloudLink Desktop & Mobile, PDF page 37.
NEW QUESTION # 53
What are the six request methods of a SIP message?
Answer: A
Explanation:
Session Initiation Protocol (SIP) is an application-layer signaling protocol used to establish, modify, and terminate multimedia communication sessions. SIP operates through request-response exchanges between User Agent Clients (UACs), User Agent Servers (UASs), and intermediary network servers.
Huawei's HCIA-Collaboration Training Material identifies six basic SIP request methods: INVITE, ACK, CANCEL, BYE, REGISTER, and OPTIONS.
INVITE initiates a multimedia session or invites a participant to join an existing session. ACK acknowledges the final response to an INVITE request. CANCEL terminates a pending request before the corresponding transaction is completed. BYE terminates an established session. REGISTER updates the user's registration or contact information with a registration server. OPTIONS queries the capabilities supported by a SIP entity.
Option B contains all six basic request methods and is therefore correct.
Options A and D incorrectly substitute MESSAGE for ACK or OPTIONS. MESSAGE is an extended SIP method used for instant-message delivery.
Option C incorrectly substitutes UPDATE for OPTIONS. UPDATE is an extended method used to modify session parameters during session establishment.
The distinction between basic and extended SIP methods is explicitly defined in Huawei's protocol curriculum and is essential to interpreting SIP signaling procedures.
Huawei reference: Training Material, PDF pages 100-101, SIP Requests (1) and SIP Requests (2).
NEW QUESTION # 54
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