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خذ اختبارات أخرى عبر الإنترنت
السؤال #1
Area management is implemented by ( ).
A. GK
B. SMC
C. MCU
D. HD video terminal
عرض الإجابة
اجابة صحيحة: A
السؤال #2
Which of the following header fields is used to indicate the route of a response message?
A. ia
B. rom
C. o
D. ontact
عرض الإجابة
اجابة صحيحة: A
السؤال #3
Which of the following statements are true about the client proxy in H.460? ( ) (Select 3 answers)
A. The client proxy is compliant with H
B. The client proxy is compliant with H
C. The client proxy includes the client GK, H
D. The client proxy use H
عرض الإجابة
اجابة صحيحة: ACD
السؤال #4
Which of the following network elements can be utilized to centrally manage and control, remotely schedule shutdowns, and perform batch OTA upgrades for 10,000 IdeaHub ES2 Plus devices?
A. iManager U2000
B. IdeaManager
C. eSight
D. SMC
عرض الإجابة
اجابة صحيحة: B
السؤال #5
Which of the following is the maximum number of cascaded conference levels supported by the SMC?
A. 8
B. 4
C. 2
D. 6
عرض الإجابة
اجابة صحيحة: B
السؤال #6
Which of the following is not a disadvantage of forward error correction.()
A. Occupation of more bandwidth
B. Deterioration of video quality
C. Delay
D. Aggravation of video jitter
عرض الإجابة
اجابة صحيحة: D
السؤال #7
By default, a single registration SC server supports a maximum of 20,000 registered devices.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #8
In H.460, ( ) defines the traversal of H.323 signaling between public and private networks.
A. H
B. H
C. H
D. H
عرض الإجابة
اجابة صحيحة: A
السؤال #9
RFC 3550 defines()RTCP packet types to carry a variety of control information.
A. 3
B. 4
C. 5
D. 6
عرض الإجابة
اجابة صحيحة: B
السؤال #10
Which of the following network elements can be utilized to centrally manage and control, remotely schedule shutdowns, and perform batch OTA upgrades for 10,000 IdeaHub ES2 Plus devices?
A. iManager U2000
B. IdeaManager
C. eSight
D. SMC
عرض الإجابة
اجابة صحيحة: B
السؤال #11
Originally, MCU cascading involves one cascaded channel, which can transmit one channel of video stream. In a telepresence conference, the channel can transmit only the video for the pane in the center. After multi-channel cascading is supported, each level of MCU can transmit multiple channels of video streams and therefore can transmit all three panes in a telepresence conference, to improve user experience.()
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #12
SIP is an application-layer protocol independent of the transport-layer protocols. It can be carriedover different transport protocols, such as UDP, TCP, TLS, and SCTP. Currently, SCTP is the mostcommonly used transport-layer protocol.
A. RUE
B. ALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #13
Session Management (SIP) and Session Description (SDP) are not independent, they complement each other so that new applications or media can be easily added.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: B
السؤال #14
VP9650 MCU is 0 U tall and provides()lots.
A. , 4
B. , 3
C. , 3
D. , 4
عرض الإجابة
اجابة صحيحة: C
السؤال #15
The quality of digital signals depends on the following factors. ( ) (Select 3 answers)
A. Bandwidth
B. Sampling rate
C. Bit depth
D. Number of audio channels
عرض الإجابة
اجابة صحيحة: BCD
السؤال #16
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
عرض الإجابة
اجابة صحيحة: A
السؤال #17
From the MCU web interface, management for the user, address book, conference, and device is provided.()
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #18
In a conference, two cascaded MCUs can be cascaded using up to ( ) channels.
A. 8
B. 16
C. 24
D. 32
عرض الإجابة
اجابة صحيحة: D
السؤال #19
In order to get low background noise, we can Commission or replace daylight lamp holders, and adjust or re-arrange air ducts and air vents of the conditioner ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #20
Which of the following statements are true about the multi-level protection of the collaboration hardware platform? (Choose all that apply.)
A. Network port backup is provided
B. Fan backup is provided
C. Power supply backup is provided
D. Disk backup (RAID) is provided
عرض الإجابة
اجابة صحيحة: ABCD
السؤال #21
Different from traditional video conferences, ad hoc conferences can be created and joined from video terminals, without the assistance from administrators.()
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #22
Nlog V2.0 can export the packet loss statistics of all sites of a specified conference.0
A. ALSE
B. RUE
عرض الإجابة
اجابة صحيحة: B
السؤال #23
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? 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.
A. gauss
B. vcexpert
C. sc
D. root
عرض الإجابة
اجابة صحيحة: A
السؤال #24
The VDC can be used with the Huawei video conferencing platform to provide rich conference control functions. Conference control settings can be customized, and conference control shortcut keys and descriptions can be set.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #25
Which of the following is the maximum number of cascaded conference levels supported by the SMC?
A. 8
B. 4
C. 2
D. 6
عرض الإجابة
اجابة صحيحة: B
السؤال #26
After you define the open logical channel on a private network terminal inside a firewall, if ( ), the media streams can be transmitted in one direction only.
A. The firewall does not have the relevant port enabled
B. The private IP address cannot be found for media stream transmission
C. The master and slave relationship cannot be determined
D. Capability negotiation cannot be implemented
عرض الإجابة
اجابة صحيحة: A
السؤال #27
The arrangement of luminaires requires the use of direct illumination to avoid diffuse reflection. ( )
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: B
السؤال #28
If a GK, by resolving the called number, finds that the called terminal registers with a neighboring GK, the GK can request the neighboring GK to resolve the called number.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #29
If a GK, by resolving the called number, finds that the called terminal registers with a neighboring GK, the GK can request the neighboring GK to resolve the called number.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #30
RFC2190 defines three formats for H.263 payload header: modes A, B, and C. Mode A is recommended and also the most common one. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #31
The SMC platform is Huawei's videoconferencing service management platform/ which implements uniform management, scheduling of video conferences, and controlling of video conferences, to make conference management faster and simpler for customers. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #32
Which of the following network elements can be utilized to centrally manage and control, remotely schedule shutdowns, and perform batch OTA upgrades for 10,000 IdeaHub ES2 Plus devices?
A. iManager U2000
B. IdeaManager
C. eSight
D. SMC
عرض الإجابة
اجابة صحيحة: B
السؤال #33
Current video communication mainly uses the 4:2:0 sampling. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #34
Loudness is an auditory sensation in terms of which sounds can be ordered on a scale extending from quiet to loud. Loudness may be quantified by the amplitude of sound waves. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #35
The sound test is to test whether the terminal audio output is correct.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #36
Which of the following statements is true about the traversal solution using H.460? ( )
A. Public network terminals use H
B. Private network terminals use H
C. Both public and private network terminals use H
D. Both public and private network terminals use standard H
عرض الإجابة
اجابة صحيحة: D
السؤال #37
The processing process of audio signal from input to playback mainly includes: analog audio signal input, sampling quantization/encoding, playback, decoding, transmission/ Storage.
A. True
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #38
When the MCU is working in wall riding mode, GE0 is registered with switch center and GE1 can only support IP address calling.
A. True
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #39
The start line of a SIP response consists of three parts: method (Method), request URI (Request-URI),and protocol version (SIP-VERSION).
A. RUE
B. ALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #40
Over an H.460 network, communication between the video terminal and client GK complies with ( ).
A. H
B. H
C. H
D. Q
عرض الإجابة
اجابة صحيحة: B
السؤال #41
The H.264 video pictures are divided into three types of frames: I-frame, P-frame, and B-frame. An P-frame is an intraframe coded picture. A I-frame is an interframe coded picture. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #42
The H.225 defines ( ) signaling. (Select 2 answers)
A. Q
B. H
C. RAS
D. T
عرض الإجابة
اجابة صحيحة: AC
السؤال #43
In H.323 protocol, opening the logical channel follows the rule of "who want to transmit, who open it". ()
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #44
The H.225 defines ( ) signaling. (Select 2 answers)
A. Q
B. H
C. RAS
D. T
عرض الإجابة
اجابة صحيحة: AC
السؤال #45
Application Layer Gateway (ALG): Monitors related application protocols, changes packet content, and opens corresponding ports. ( )
A. ALSE
B. RUE
عرض الإجابة
اجابة صحيحة: B
السؤال #46
Terminal faults include: Local video/audio faults, Remote video/audio faults, Faults related to calls or conference control. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #47
The VDC can be used with the Huawei video conferencing platform to provide rich conference control functions. Conference control settings can be customized, and conference control shortcut keys and descriptions can be set.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #48
Which of the following is the maximum number of cascaded conference levels supported by the SMC?
A. 8
B. 4
C. 2
D. 6
عرض الإجابة
اجابة صحيحة: B
السؤال #49
Which of the following network elements can be utilized to centrally manage and control, remotely schedule shutdowns, and perform batch OTA upgrades for 10,000 IdeaHub ES2 Plus devices?
A. iManager U2000
B. IdeaManager
C. eSight
D. SMC
عرض الإجابة
اجابة صحيحة: B
السؤال #50
Video compression standards that are widely used currently include the H.261, H.263, and H.264 of the ITU and MPEG- 1, MPEG-2, and MPEG-4 of the ISO/IEC. The H.26x series standards are used in real-time video communication .The MPEG series standards are used in video storage (on DVDs), video broadcast, and video streaming media.()
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #51
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? 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.
A. gauss
B. vcexpert
C. sc
D. root
عرض الإجابة
اجابة صحيحة: A
السؤال #52
Which of the following items is not filtered by the firewall. ( )
A. Source address
B. Destination address
C. Destination port number
عرض الإجابة
اجابة صحيحة: C
السؤال #53
In a SIP multipoint conference, if BFCP Trans Type is set to TCP on the MCU, the BFCP communication protocol must be set to TCP on the endpoint.
A. ALSE
B. RUE
عرض الإجابة
اجابة صحيحة: B
السؤال #54
Wireshark is a network packet analysis tool whose main role is to capture network packets in real time on the interface and display the detailed protocol information of the packets in detail. ( )
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #55
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
عرض الإجابة
اجابة صحيحة: A
السؤال #56
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? 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.
A. gauss
B. vcexpert
C. sc
D. root
عرض الإجابة
اجابة صحيحة: A
السؤال #57
The sharp and smooth policy is applicable to single-point conferences and multiple local points conferences, except multiple remote points conferences. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #58
During a point-to-point call between different GKs, the local GK sends an LRQ request to theneighboring GK to query the information about the called node.
A. RUE
B. ALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #59
By default, a single registration SC server supports a maximum of 20,000 registered devices.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #60
For VGA output, the maximum pixels are().
A. 1920*1080
B. 1280*1024
C. 1366*768 D 1360*768
عرض الإجابة
اجابة صحيحة: B

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