HCIP-Collaboration V3 0 H11-861_V3 0-ENU Questions and Answers

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Full version: H11-861_V3.0-ENU Exam Dumps Questions
1. In the Wireshark menu bar, the () function can jump to the captured data.
Answer: Go
2.Cloud In the public-private network traversal scenario without DMZ zone, Link Edge 100 needs to
configure the NAT policy on the external network firewall, statically map the IP addresses of SMC and
SC, and the source port to the internal IP addresses and destination ports of the internal SMC and
SC.
A. True
B. False
Answer: B
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3. Please sort the following operation steps for on-demand conferences.
Answer:
Select "Book Meeting" on SMC---------------------------------1
Click "Advanced Parameters", configure "Recording and Broadcasting" to be enabled, and add
conference rooms and participants-------------------------2
Start the meeting and enable recording in the menu--------------------------------3
After the meeting, publish the recorded meeting on the recording server--------------------------------4
4. A service area can only support one registration SC or one access radio Sc, but one SC can
belong to multiple service areas at the same time.
A. True
B. False
Answer: A
5.Which of the following systems can use the IdeaShare client to perform screencasting on deaHub?
(Multiple choice)
A. Windows 10
B. iOS16.0
C. Android 13.0
D. macOS 13.0
Answer: ABCD
6. The advantages of AAC-LD audio coding method compared to G.711 are: low bandwidth, low
latency, and high quality.
A. True
B. False
Answer: A
7. John turned on the "meeting record" function when booking a meeting, but the meeting record was
not generated after the meeting.
This situation may be caused by which of the following reasons? (Multiple choice)
A. The recording function is not enabled for the conference
B. ASR service status is abnormal
C. The conference recording function is not enabled for terminal point-to-point conferences.
D. An invited terminal leaves the meeting during the meeting
Answer: ABC
8.H.264 video divides images into three types of frames: I, P, and B. Among them, frame a uses inter-
frame coding, and frame b uses intra-frame coding. Which of the following statements about types a
and b is correct?
A. B, P
B. P, I
C. I, P
D. I, B
Answer: B
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9. After the Huawei video terminal is successfully connected to the camera, the user can set the
camera parameters, such as exposure mode, white balance mode, noise reduction, etc., through the
terminal's Web interface. The larger the noise reduction value is, the less noise will be in the picture
and the quality of the image will be reduced. The details are clearer.
A. True
B. False
Answer: A
10. The intranet of a certain SMC video conferencing system is co-located with SMC and SC. The
independent SC and RSE are deployed in the DMZ area. After configuring RSE on the SMC, it shows
that the RSESIP registration failed.
Which of the following reasons may cause this situation? (Multiple choice)
A. The registered address of RSE is intranet SC.
B. The registered SC address is wrongly entered in the RSE configuration on the SMC web page.
C. The public and private network zone matching rules are wrongly configured on the SMC web page.
D. The prefix of RSE is the intranet zone, and the server address configured on RSE is the DMZ SC
address.
Answer: ABCD
11. In SMC video conferencing system, if the program administrator wants to use the information
window function, which of the following options can be performed? (Multiple choice)
A. Meeting reservation management
B. Conference resource allocation management
C. Material library management
D. Program management
Answer: CD
12.1.Cloud? C debugging command, mswt-media trace <SrcStmNO> <DstStmNO> <Flag>, which of
the following statements is correct?
A. DstStmNO is the source stream number
B. Flag is 1 means printing Nalu information
C. SrcStmNO is character type
D. Flag can take values -1, 0, 1
Answer: B
13. As shown in the figure, the RTCP example process includes SR, RR, SDES and ()
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Answer: BYE
14. An SMC video conferencing system site hopes to deploy the conference system by converging
the single-selected port number of the firewall, and plans a DMZ area, in which the intranet SC is SCL
and the DMZ area SC is SC2. In this case, the most suitable SCL and Which of the following is the
form of SC2?
A. SCL is the registered SC, SC2 is the registered SC
B. SCL is agent S
C. SC2 is the agent SSCL is the agent SC, SC2 is the registered S
D. SCL is the registered SC. SC2 is the agent SC.
Answer: A
15. Which of the following statements are correct? (Multiple choice)
A. The video signal starts from being input to the terminal device, is encoded and compressed, and
then sent to the network until it is finally displayed. It goes through many image processing links,
mainly including: image acquisition, preprocessing, compression encoding, data encapsulation and
transmission, decoding, Image format changes, playback.
B. In the video conferencing system, the camera converts each pixel in the image into three
independent signals of RGB. Since RGB is not conducive to compression, it needs to be converted to
YUV format for processing first.
C. In the video conferencing system, the monitor will convert the HSV signal received from the
camera into RGB format for display.
D. Before a video is compressed and encoded, one frame of the 1080p image occupies 9.5Mb of
storage space, so its color bit depth is 24bit.
Answer: ABCD
16. A company deployed a Huawei video conferencing system to hold a video conference. When the
bandwidth is sufficient, its audio codec is AACLD mono 64K.
A. True
B. False
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Answer: B
17. Assume that T1 and T2 are two terminals registered in the same SC node area (SC enables
signaling routing). After T1 calls T2's number through the H.323 protocol, T1 and T2 communicate.
Please match the TCP link establishment between the following network elements with its description
one-to-one
Answer:
18. The figure below shows the system information of a certain VP96 series MCU. From this
information, which of the following conclusions can we infer? (Multiple choice)
A. Users can initiate a multi-party conference directly on the MCU's web interface.
B. The conference terminal cannot be registered to the MCU through the H.323 protocol.
C. Users cannot add venue information to the address book on the MCU's web interface.
D. The conference terminal can be directly registered to the MCU through the SIP protocol
Answer: AD
19. Huawei VP96 and MCU support interworking between the MCU and public network terminals by
activating static NAT, but this function only applies to H.323 terminals and does not take effect on SIP
terminals.
A. True
B. False
Answer: A
20. Assume that T3 and T4 are two terminals registered under the same SC node area (SC does not
enable signaling routing). After T3 calls T4's number through the H.323 protocol, T3 and T4
communicate. Which of the following descriptions of TCP link establishment during the above call
process are correct? (Multiple choice)
A. When an H.245 link is established between T4 and SC, SC actively sends a TCP link
establishmentrequest to T4.
B. When an H.245 link is established between T3 and T4, T3 actively sends a TCP link establishment
request to T4.
C. When a Q.931 link is established between T3 and T4, T3 actively sends a TCP link establishment
request to T4.
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D. When the Q.931 link is established between T3 and SC, SC actively sends a TCP link
establishment request to T3.
Answer: BC
21. The () function in the Wireshark menu column can jump to the captured data.
Answer: Go
22. If the conference networking type of the SHC video conferencing system is configured as "Full
Adaptation Networking", which of the following options should the SHC system administrator
configure after the SKC initialization configuration? (Multiple choice)
A. Configure the service area type as SVC
B. Add registered SC
C. Multi-channel value configuration
D. Add MCU to Default service area configuration
Answer: BCD
23. By observing the status of the board indicator light of the RSE6500 recording and broadcast
server, we can infer the current operating status of the server. For example, when the server board is
loading a program, the "ACT" and "__" indicator lights are normal. off, the "RUN" indicator light
flashes quickly (4 flashes per second).
Answer: ALM
24.What does the response message "1xx" in the SIP protocol mean?
A. Indicates that the request message contains a syntax error or the SIP server cannot complete the
processing of the request message.
B. Indicates that the request cannot be fulfilled on any SIP server
C. Further actions are required to complete the request
D. Indicates that the request message has been received and is being processed.
Answer: D
25.SNP (Super Network Passport) technology is used to achieve public and private network traversal
without adding network equipment.
A. True
B. False
Answer: A
26.Which of the following statements about image sampling is correct?
A. The three components of RGB have weak correlation, which is not conducive to video image
compression commonly used for image display.
B. The 4:2:0 sampling mode in YUV can reduce the volume by 2 times compared to the 4:4:4
sampling mode.
C. The data transmission rate of a video using YUV 4:2:0 is 140Rbits. If the video is in 4:2:2 mode,
the transmission rate required for the video is 175Mbits.
D. For the human eye, the Y component of YUV is the most important, so UV can be downsampled.
Answer: B
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27. H.323 ?
28. The CANCEL transaction can only be sent after receiving a provisional response to INVITE
(including 100) and before the final response.
A. True
B. False
Answer: A
29.The quality of digital audio depends on which of the following factors? (Multiple choice)
A. Bandwidth
B. Number of channels
C. Sampling rate
D. Number of quantization bits
Answer: BCD
30.Which of the following types of RTCP messages is used to describe the source of sending RTCP
packets?
A. SDES
B. SR
C. RR
D. APP
Answer: A
31.RAS message is a protocol used between entities and gateways. Its main functions include access
control, address resolution, and bandwidth control.
A. True
B. False
Answer: B
32. Huawei video conferencing system, bare metal SMC and SC co-deployment scenarios single-
select how many conference rooms can this network support?
A. 5000
B. 100000
C. 1000
D. 10000
Answer: D
33. Which of the following message interactions are included in the process of the terminal using the
H.323 protocol to make calls through numbers? (Multiple choice)
A. ACF
B. Connect
C. Setup
D. ARQ
Answer: ABCD
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34. In firewall configuration, communication from a network with a high security level to a network with
a low security level is generally not restricted.
A. True
B. False
Answer: A
35.A gatekeeper can send an address resolution request to other gatekeepers through which of the
following signalings?
A. RRQ
B. GRQ
C. LRQ
D. URQ
Answer: C
36.Which of the following are types of RTCP messages? (Multiple choice)
A. BYE
B. RR
C. SR
D. UDP
Answer: ABC
37. Which of the following is the correct ranking of the voice quality of different voice codec protocols?
A. AAC LD>G.722>G.728>G.711
B. AAC LD>G.722>G.711>G.728
C. G.711>G.728>G.722>AAC_LD
D. G.722 >G.711>G.728>AAC_LD
Answer: A
38. The enterprise A administrator is planning an enterprise conference system (not involving the
DMZ area). Considering that the maximum capacity of the conference room must reach 1099, which
of the following deployment forms can he choose? (Multiple choice)
A. Medium-sized networking in the form of bare metal
B. A medium-sized virtualized network with 8 logical cores, 16G memory, and 400G disk.
C. Software-based medium-sized networking
D. Cloud Link Edge 1000
Answer: ABC
39.In audio coding technology, which of the following are speech quality indicators? (Multiple choice)
A. Anti-interference
B. Packet loss rate
C. Delay
D. Bandwidth
Answer: BCD
40. In the header field of the SIP protocol, Via is used to identify the initiator of the request.
A. True
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B. False
Answer: B
41. As shown in the figure, in the SIP point-to-point call process, after user A returns the () message,
the RTP and RTCP protocols will be used for media streaming.
Answer: ACK
42.Which of the following options may cause John to turn on the real-time subtitle function when
booking a meeting but prompt the meeting to fail? (Multiple choice)
A. The ASR server is unavailable
B. The ASR service is not enabled on the SMC.
C. Opened the national secret configuration
D. The service area is only equipped with 96 series MCUs
Answer: ABCD
43. Color temperature is defined by an absolute black body. When the radiation of the light source is
exactly the same as the radiation of the absolute black body in the single-selectable visible area, the
Kelvin temperature of the black body at this time is called the color temperature of the light source.
A. True
B. False
Answer: A
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44. Before encoding and compression, one frame of a 720p 30fps video occupies 42Mb of storage
space, so the color depth used is 24bit.
A. True
B. False
Answer: B
45. In the H.264 video protocol, images are divided into three types of frames: I, P, and B. Which of
the following descriptions of these three frames are wrong? (Multiple choice)
A. I-frame: Intra-coded frame, which represents a key frame and is a complete retention of a frame.
B. Among I frames, P frames and B frames, P frame has the highest compression efficiency.
C. P frame: Bi-directional predictive interpolation coded frame, which is a bi-directional difference
frame that records the difference between this frame and the previous and subsequent frames.
D. B frame: Forward predictive coding frame, which represents the difference between the current
frame and the previous frame (or P frame).
Answer: BCD
46. The Call-ID header field is a unique identifier that collects a series of messages. In the
conversation, the Call-ID must be the same in all requests and responses sent by each UA.
A. True
B. False
Answer: A
47. After adding a new SC through the SMC Web page, it is displayed that the SC addition failed.
What may be the following reasons? (Multiple choice)
A. The target SC service is not started.
B. The target SC has not been installed or the installation failed.
C. Port 8443 on the target SC server has been opened.
D. The passwords of the smc_device_mgmt and smc_conf_mgmt accounts on the target SC have
been changed.
Answer: ABCD
48.Which of the following options are correct regarding the terminal troubleshooting function and its
description? (Multiple choice)
A. Routing test: Simply determine the address route of the destination of the data packet through
routing test.
B. Loopback test: Simulate the actual application of audio and video data and transmit it on the
channel to testwhether the expected output can be obtained. Video self-loop needs to be selected
when executing the task.
C. Network test: Test the network interoperability between the terminal and other network element
equipment through the network.
D. Signaling diagnosis: The hard terminal supports Web administrator users to conduct signaling
diagnosis and export diagnostic files.
Answer: ABCD
49. Please correspond to the following terminal conference parameters and their examples:
Answer:
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Video bandwidth-------------1.856, 00k1.[30]
Video protocol------------H.264 HP 1080P
Audio bandwidth------------64, 00k
Audio protocol-----------AAC-LD MONO
50. An enterprise plans to build an SMC video conferencing system on Huawei public cloud. Please
match the following system construction process with the corresponding step sequence.
1, 1
2, 2?
3, 3
4, 4
A. Network planning and application for virtual machines
B. Apply for basic services
C. Install network elements
D. Security reinforcement
Answer: ABCD
51.Which of the following registration information does RRQ carry to initiate registration with GK?
(Multiple choice)
A. H.323ID
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B. IP address
C. MAC address
D. Port number
Answer: BD
52.Which of the following are SMC operating system users in bare metal scenarios? (Multiple choice)
A. smcuser
B. vcexpert
C. ftpue
D. Root
Answer: ABD
53. Effective field of view
A. Horizontal viewing angle 20-30°
B. Horizontal viewing angle is less than 10°
C. Horizontal viewing angle is greater than 30°
D. Horizontal viewing angle 10-20°
Answer: ABCD
54. After a user logs in to the web interface of VP9650, the information displayed is as shown in the
figure below.
Which of the following descriptions of this MCU is wrong?
A. Users cannot initiate multi-party conferences on the MCU's web interface.
B. When users initiate a multi-party conference on the SMC, they can call the media resources of the
MCU.
C. The connection type of this MCU is "SMC2.0/IMS"
D. The MCU has built-in GK enabled
Answer: D
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55. Slot () of VP9650 can be used to install RSE-M boards.
Answer: 3
56.SMC’s decentralized management system consists of (), regions, conference rooms and users.
Answer: organize
57. Which of the following statements is correct?
A. The CANCEL transaction can only be sent after receiving the temporary response to INVITE
(including 100) and before the final response.
B. CANCEL transactions can be used for CANCEL INVITE transactions and non-INVITE transactions.
C. There is a three-way handshake process for non-INVITE transactions.
D. Provisional responses (1xx) can exist for non-INVTE transactions.
Answer: A
58. Please match the I/P/B frame with its characteristics -
Answer:
Frame B-------- Compared with the other two frames, this frame has the highest compression ratio
P frame------------It is a forward prediction frame, which may cause the spread of decoding errors.
B frame----------It is a bidirectional predictive coding frame
I frame----------generated without referring to other pictures
P frame-----------The complete image can be reconstructed using only its data when decoding
59. In the medium-sized network of Huawei video conferencing solution, SMC and SC are deployed
in the Euler operating system in the form of Docker containers.
A. True
B. False
Answer: A
60. The recording and broadcasting server can save the code stream sent by the MCU () (Multiple
choice)
A. Live broadcast
B. On demand
C. Upload
D. Download
Answer: ABD
61.Which of the following codec protocols can be used for broadband voice?
A. 711
B. 729
C. 718
D. Ilbc
Answer: D
62. The user logs in to the Huawei video conferencing terminal and sees that the audio protocols
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currently supported by the venue include G.711, G.728 and ACC-LD. If the terminal wants to make an
audio call with the remote venue at this time, the remote venue only needs to Support any of the three
protocols G.711, G.728 and ACC-LD, and you can establish an audio call with the local venue
A. True
B. False
Answer: A
63.John wants to use HW Cloud Link Mobile quickly accesses company video conferencing, and he
can use Harmony OS system mobile phone access.
A. True
B. False
Answer: A
64. Huawei video conferencing system can convene meetings through the sys-portal page of SMC.
A. True
B. False
Answer: B
65. The license information of RSE6500 shown in the figure, which of the following conclusions can
we draw? (Multiple choice)
A. If the user has enabled the live broadcast of 4 multi-party conferences on the SMC, the recording
function cannot be enabled for the fifth multi-party conference.
B. Regardless of whether the user uses a mobile phone or a computer to watch on-demand videos,
the RS6500 only supports a maximum of 500 users watching online at the same time.
C. The RSE6500 supports users to start live streaming of 4 multi-party conferences at the same time
on the SUC.
D. If the user has enabled the recording of 4 multi-party conferences on the SC, the live broadcast
function can be enabled for the fifth multi-party conference.
Answer: BC
66. The video signal starts from being input into the terminal device, is encoded and compressed,
then sent to the network, and is finally displayed. It goes through many image processing links, mainly
including: signal acquisition, preprocessing, compression encoding, data encapsulation and
transmission, decoding, image format change, playback.
A. True
B. False
Answer: A
67. IdeaHub uses H.265 for both the main video and auxiliary stream encoding and decoding
protocols. Combined with Huawei’s proprietary active video enhancement technology (VME), it can
obtain 4K 30fps video and up to 8K data experience.
A. True
B. False
Answer: B
68. RAS is carried on the UDP layer. The port number can be configured on the MCU. What is the
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default source port number?
A. 1725
B. 1729
C. 1719
D. 1720
Answer: B
69.In the RTCP message type, the ____ message is used to describe the sending and receiving
statistics of the sending gateway.
Answer: SR
70.Which of the following network elements does not belong to Huawei's intelligent collaboration
solution?
A. SMC
B. MCU
C. HW Cloud Link Desktop
D. Cloud Link Edge Dev Board
Answer: C
71. In H.460 networking, at which signaling transmission stage do the transmission keepalive
duration, keepalive port, and keepalive fields appear?
A. In ARQ message
B. OLC message
C. In ACF message
D. In IR message
Answer: B
72. In the process of making a point-to-point number call using the H.323 protocol, the called terminal
will send a call request to () after receiving the setup signaling.
Answer: GK
73. User A joins the meeting with one click on the join conference tab of the soft terminal.
74. As shown in the figure, the main server address configured in the recording and broadcasting
server refers to the '' IP address.
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Answer: SMC
75. John wants to configure two NAT mappings about SC on the firewall by referring to the figure
below. Which of the following destination address translation methods should he use?
A. One-to-one conversion between public network port and private network address
B. One-to-one conversion between public network port and private network port
C. One-to-one conversion between public network address and private network address
D. One-to-one conversion between public network address and private network address
Answer: D
76. When performing Wireshark packet analysis, if you want to filter out the packets exchanged
between terminal T1 (IP address is 192.168.1.100) and SC (IP address is 192.168.1.212), which of
the following filter condition expressions can be used?
A. ip.addr==192.168.1.100 1l ip.addr==192.168.1.212
B. ip.dst==192.168.1.100 && ip. src==192.168.1.212
C. ip.addr==192.168.1.100 && ip.addr==192.168.1.212
D. ip. sre==192.168.1.100 ll ip. dst==192.168.1.212
Answer: C
77. Which of the following descriptions about illumination is wrong?
A. Illuminance refers to the degree to which an object is illuminated
B. Illumination is expressed by the luminous flux received per unit area.
C. There is a lot of image noise in places with sufficient illumination.
D. The unit of illumination is Lux (Lux, 1x)
Answer: C
78. Which of the following header fields is used to indicate the SIP entity and route that the request
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passes through?
A. via
B. To
C. CSeq
D. From
Answer: A
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