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خذ اختبارات أخرى عبر الإنترنت
السؤال #1
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 #2
In the encrypted conference scenario, the SIP transmission type must be set to TLS on both the MCU and endpoint.
A. ATRUE
B. BFALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #3
The H.323 is used to deliver multimedia service on packet-switched networks.()
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #4
In video conferences, in order to improve the voice quality, we can use Audio Enhancement Technologies such as()- (Select 3 answers)
A. VAD
B. CNG
C. AAC-LD
D. EC
عرض الإجابة
اجابة صحيحة: ABD
السؤال #5
The H.225 defines ( ) signaling. (Select 2 answers)
A. Q
B. H
C. RAS
D. T
عرض الإجابة
اجابة صحيحة: AC
السؤال #6
1080i 50/60 fps: Interlaced scan for images, 50 or 60 fields per second.( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #7
Call Setup Signaling SETUP refers to a message sent by the caller to the called, indicating that the call is wanted to be established.
A. True
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #8
Area management is implemented by ( ).
A. GK
B. SMC
C. MCU
D. HD video terminal
عرض الإجابة
اجابة صحيحة: A
السؤال #9
SEC is Super error concealment using the ARQ algorithm. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #10
Illuminance, color temperature, white balance, and color rendering index, the four optical indexes are crucial to the actual image display of the video conference. ()
A. ALSE
B. RUE
عرض الإجابة
اجابة صحيحة: B
السؤال #11
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 #12
The role of RTP in VoIP mainly includes: real-time transmission of media information, elimination of jitter, card performance, prevention of packet loss, in a certain situation can be transmitted DTMF signals, tones and signaling.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #13
Adhoc meetings are instant meetings, users can activate the meeting and join the meeting on the terminal side, and the operation process has video and audio prompts.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #14
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 #15
Functions of RTP in voice over IP are as follows: Real-time transmission of media data. Jitter cancellation, Packet ordering, Packet loss prevention, Transmission of DTMP signal, signal tones, and signaling in some situations. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #16
By default, the SMC provides six user roles. Default permissions of each user role can be modified or deleted based on site requirements.
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #17
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 #18
In H460 networking, the H.245 TCP connection of the private network terminal is established with TS.
A. True
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #19
Which of the following is the format of the configuration file exported from the CloudRSE web interface?
A.
B.
C.
D.
عرض الإجابة
اجابة صحيحة: D
السؤال #20
For FEC, When both parties establish a call and the packet loss in media stream exceeds 0.1% within 10s, the FEC function is enabled. FEC separates some bandwidth from the call bandwidth to transmit anti - dropping redundant stream. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #21
After an AVC conference is held, a user logs in to the MCU and runs the debug command. The following information is displayed: Which of the following is the IP address of site T3? In the conference site list, Site 18 corresponds to T3 and its remote media IP ([RmtMedIp]) is listed as 172.23.132.76.
A. 172
B. 172
C. 172
D. 172
عرض الإجابة
اجابة صحيحة: D
السؤال #22
In H.323 protocol, the last number 3 means().
A. B-ISDN
B. QOS
C. PNN
D. GSTN and radio network
عرض الإجابة
اجابة صحيحة: C
السؤال #23
Which of the following registration information types are carried in an RRQ to register with the GK? (Choose all that apply.)
A. AMAC address
B. BPort number
C. CIP address
D. DH
عرض الإجابة
اجابة صحيحة: BCD
السؤال #24
Assume endpoints T1 and T2 are registered with the same SC node zone (signaling routing is enabled on the SC). After T1 calls the number of T2 using H.323, T1 communicates with T2. How many TCP connections are established in this process?
A. A2
B. B4
C. C3
D. D5
عرض الإجابة
اجابة صحيحة: B
السؤال #25
By default, the SMC provides six user roles. Default permissions of each user role can be modified or deleted based on site requirements.
A. ALSE
B. RUE
عرض الإجابة
اجابة صحيحة: A
السؤال #26
NAT works at the ( ).
A. Data link layer
B. Network layer
C. Application layer
D. Transport layer
عرض الإجابة
اجابة صحيحة: B
السؤال #27
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 #28
Methods for upgrading the MCU software include ( ). (Select 2 answers)
A. Upgrade using the embedded web server
B. Upgrade using FTP
C. Minimized upgrade
D. All of the above
عرض الإجابة
اجابة صحيحة: AB
السؤال #29
Basic functions of the firewall include: Content Filtering, User Authentication, VPN, Application Proxy, NAT, Packet Filtering & Status Detection, IDS and Alarming, Logs. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #30
The video firewall mode does not require additional network devices for public/private traversal.()
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #31
The H.225 defines ( ) signaling. (Select 2 answers)
A. Q
B. H
C. RAS
D. T
عرض الإجابة
اجابة صحيحة: AC
السؤال #32
Which of the following header fields is used to indicate the route of a response message?
A. Via
B. From
C. To
D. Contact
عرض الإجابة
اجابة صحيحة: A
السؤال #33
Video compression includes intra-frame compression (1 frame) and inter-frame compression (P frame), common H.26X, MPEG-2, MPEG-4 Both support in-frame/inter-frame compression.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #34
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 #35
Area management is implemented by ( ).
A. GK
B. SMC
C. MCU
D. HD video terminal
عرض الإجابة
اجابة صحيحة: A
السؤال #36
When the Huawei video terminal is successfully connected to the camera, the user can set the camera parameters through the web interface of the terminal, such as exposure mode, white balance mode, noise reduction, etc., where the larger the noise reduction value setting, the less noise in the picture and the clearer the details of the image.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #37
Multi-channel cascading supports auto-spin down function ().
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: B
السؤال #38
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 #39
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 #40
Which of the following is the maximum number of cascaded conference levels supported by the SMC?
A.
B.
C.
D.
عرض الإجابة
اجابة صحيحة: B
السؤال #41
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 #42
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 #43
A session-independent nature is that a SIP-URL represents a resource or user that needs to be accessed, and the message body can carry anything.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: A
السؤال #44
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 #45
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 #46
Intelligent control system includes video system, audio system and others, which of the following does not belong to the video system. ( )
A. ickup system
B. he video shows the system
C. ideo Input System
D. ighting system
عرض الإجابة
اجابة صحيحة: D
السؤال #47
The advantages and disadvantages of Forward error correction (FEC) are(). (Select 2 answers)
A. it has high requirements for latency, which makes it difficult to use in live networks, it is effective only in slight packet loss
B. it occupies little bandwidth and slightly impacts the video quality
C. The video quality is affected because the redundant data occupies some bandwidth
D. it can restore the lost data with a certain probability and it is applicable to common packet loss scenarios
عرض الإجابة
اجابة صحيحة: CD
السؤال #48
In the encrypted conference scenario, the SIP transmission type must be set to TLS on both the MCU and endpoint.
A. ALSE
B. RUE
عرض الإجابة
اجابة صحيحة: B
السؤال #49
Network recording and broadcasting does not occupy any resources of the MCU, and there is no interference with the running status of the video conference.
A. rue
B. rror
عرض الإجابة
اجابة صحيحة: B
السؤال #50
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 #51
Area management is implemented by ( ).
A. GK
B. SMC
C. MCU
D. HD video terminal
عرض الإجابة
اجابة صحيحة: A
السؤال #52
For Basic request messages, ( ) is used for querying the SIP server capabilities.
A. INVITE
B. ACK
C. REGISTER
D. OPTIONS
عرض الإجابة
اجابة صحيحة: D
السؤال #53
The network diagnostic tool supports remote diagnostic mode, and the network diagnostic tool remotely controls another network diagnostic tool to initiate a network diagnosis and judgment against other network diagnostic tools.
A. True
B. False
عرض الإجابة
اجابة صحيحة: A
السؤال #54
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 #55
When Dual-screen mode is set to Manual for the Box 310/610, which of the following options can be selected for Output port policy? (Choose all that apply.)
A. Single-screen
B. Extended mode 1
C. Extended mode 3
D. Extended mode 2
عرض الإجابة
اجابة صحيحة: ABD
السؤال #56
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 #57
A transaction only can be identified by a unique branch.()
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #58
Where the illumination is not enough, the image noise is low, and the image is dark.
A. rue
B. alse
عرض الإجابة
اجابة صحيحة: B
السؤال #59
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. RUE
B. ALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #60
Area management is implemented by ( ).
A. GK
B. SMC
C. MCU
D. HD video terminal
عرض الإجابة
اجابة صحيحة: A
السؤال #61
SIP and SDP are independent of each other. SIP can implement multimedia calls independently toadd new applications or media easily.
A. RUE
B. ALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #62
Area management is implemented by ( ).
A. GK
B. SMC
C. MCU
D. HD video terminal
عرض الإجابة
اجابة صحيحة: A
السؤال #63
During communication, both endpoints may occupy an event or resource that cannot be shared. To avoid this situation, a master endpoint needs to be determined. When conflicts occur, the standby endpoint should follow the master endpoint. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: A
السؤال #64
Which of the following cannot be exported from the device management page of the MCU web interface. ( )
A. ateway/MCU
B. ddress book
C. icense
D. tatus table
عرض الإجابة
اجابة صحيحة: D
السؤال #65
The YPbPr output supports 16:9 ratio and 4:3 ratio ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B
السؤال #66
An MCU is must for point-to-point calls between endpoints, but is optional for multipoint conferences. ( )
A. TRUE
B. FALSE
عرض الإجابة
اجابة صحيحة: B

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