Huawei h11-879 practice test

HCIE - Enterprise Communication (Written)

Last exam update: Dec 25 ,2025
Page 1 out of 8. Viewing questions 1-15 out of 106

Question 1

Regarding Huawei Videoconferencing VME technology, which of the following descriptions is correct:
() (multiple choice)

  • A. It can improve image compression ratio and save bandwidth
  • B. Optimize the image processing of the active area to increase the clarity
  • C. Optimize the graphics in the static area to increase the clarity
  • D. VME's frame doubling technology can improve the smoothness of images
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Answer:

A, B, D

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Question 2

Which of the following signaling is included in a SIP call? () (multiple choice)

  • A. Invite
  • B. 200 OK
  • C. ACK
  • D. Set UP
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Answer:

A, B, C

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Question 3

After the terminal initiates a call and sends an ARQ message to GK, it receives an ARJ message. The
possible reason for the call rejection is () (multiple choice)

  • A. The called is offline
  • B. The called party refuses to answer
  • C. Insufficient call bandwidth
  • D. called busy
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Answer:

A, C

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Question 4

When the number of bills exceeds the limit of the number of bill pools of the U1900 unified gateway,
which statement is correct? () (multiple choice)

  • A. can be set to choose to overwrite old bills
  • B. can be set to discard new bills
  • C. It may cause the unified gateway to fail to register new users
  • D. May cause all users to be unable to initiate calls
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A, B, D

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Question 5

In the H.460 public and private network traversing dual SC networking, the communication between
the terminal and Client GK follows the () protocol (Single choice)

  • A. H.460
  • B. H.323
  • C. H.460.18/19
  • D. Q.931
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Answer:

A

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Question 6

One codec rate is 64kbps, and the packaging time is 20ms. What is the IP band occupied by the
codec? The width is () kbps (Note: IP/UDP/RTP header is 40 Bytes, here 1kbps=1000bps)

  • A. 83.6
  • B. 76.6
  • C. 90.4
  • D. 80
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Answer:

D

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Question 7

Huawei TE series terminals make point-to-point calls, and the video-related settings are all
"automatic", the following statement. The correct one () (multiple choice)

  • A. In the case of sufficient bandwidth, the main video is given priority to the 1080P60 format.
  • B. In the case of sufficient bandwidth, the main video is given priority to the 1080P30 format
  • C. In the case of sufficient bandwidth, 720P60 format is preferred for the main video
  • D. In the case of sufficient bandwidth, 720P30 format is preferred for the main video
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A, B, D

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Question 8

If AAC_LD uses an encoding rate of 48kbps and a packaging time of 20ms, what is the IP bandwidth
occupied by the encoding () kbps

  • A. 80
  • B. 74.4
  • C. 64
  • D. 76.6
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Answer:

C

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Question 9

The interconnection between two U1900 series unified gateways can only be achieved through SIP
trunking. ()

  • A. Right
  • B. Wrong
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B

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Question 10

The U1900 system is connected to the PSTN through a digital trunk. In U1900, phone A cannot call
user B's On mobile phone, user B can call back phone A normally. Which of the following reasons
may cause this failure? () (single choice)

  • A. The digital trunk connection between U1900 and PSTN is faulty.
  • B. Phone A is not registered properly.
  • C. Phone A outbound call permission restriction
  • D. Phone A has been added to the system's blacklist of called parties
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Answer:

C

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Question 11

In the converged conference MCU central networking mode, what method does the eSpace PC
support to join the conference directly with the chairman authority? () (multiple choice)

  • A. Key in the conference list
  • B. Dial in
  • C. Join by email link
  • D. Invitation from outside
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A, B, C

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Question 12

What technologies are adopted by TE series terminals to ensure the safety of signaling and media
data? () (multiple choice)

  • A. Support TLS protocol to ensure the security of HTTP, LDAP, FTP data transmission
  • B. Provide a secure management channel through TELNET by default
  • C. Support H.235, SIP over TLS, SRTP at the same time to ensure the safety of signaling and media data
  • D. At the maintenance and management level, it supports password complexity checking and anti- brute force cracking mechanism
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A, C

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Question 13

As shown in the figure (there is a picture, a screenshot of the call status, showing the video packet
loss rate, which is 14.8%), when the chairman broadcasts the TE terminal, the terminal sees the
sending packet loss rate of 14.8%, indicating that there may be other The terminal watched the
venue, and the packet loss rate reached 14.8%. () Right or Wrong

  • A. Right
  • B. Wrong
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B

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Question 14

How to order the recorded video on RSE6500 on the terminal side? ()

  • A. When there is SC and routing has been configured, the terminal directly calls the IP address of RSE6500
  • B. When there is SC and routing is configured, the terminal directly calls the recording ID
  • C. When there is no SC or SC is not configured with routing, the terminal directly calls the recording ID
  • D. When there is no SC or SC is not configured with routing, the terminal calls RSE6500IP address##Recording ID
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B, D

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Question 15

In the H.323 protocol, the message used to control the opening of the logical channel is ()

  • A. CLC, CLCA
  • B. OLC, OLCA
  • C. TCSR, TCSA
  • D. MSDR, MSDA
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Answer:

B

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