Huawei Huawei Certifications H11-861 Questions & Answers

• Question 291:

  The capability exchange information is as follows( ). (Select 3 answers)

  A. TCS

  B. TCSA

  C. TCSR

  D. IRR

  Correct Answer: ABC

• Question 292:

  Which of the following statements is not true about videoconferencing service in H.460.( )

  A. A TCP channel is established by a private network terminal.

  B. Call signaling between public and private network terminals complies with H.323.

  C. After a call is established, keep-alive packets must be periodically transmitted to the maintain pinhole path.

  D. After the TCP channel is established, the private network terminal is directly connected to the public network terminal by sending "connect" message to each other.

  Correct Answer: D

• Question 293:

  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

  Correct Answer: B

• Question 294:

  Which of the following items is not filtered by the firewall. ( )

  A. Source address

  B. Source port number

  C. Destination address

  D. Destination port number

  Correct Answer: C

• Question 295:

  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.

  Correct Answer: A

• Question 296:

  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

  Correct Answer: A

• Question 297:

  Over an H.460 network, communication between the video terminal and client GK complies with ( ).

  A. H.460

  B. H.323

  C. H.460.18/19

  D. Q.931

  Correct Answer: B

• Question 298:

  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

  Correct Answer: A

• Question 299:

  For Basic request messages, ( ) is used for querying the SIP server capabilities.

  A. INVITE

  B. ACK

  C. REGISTER

  D. OPTIONS

  Correct Answer: D

• Question 300:

  Audio Enhancement Technologie-ANR is used to adjust the voice volume of a telephone call. ( )

  A. TRUE

  B. FALSE

  Correct Answer: B