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H11-879 Questions and Answers

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H11-879 Questions and Answers

Question # 6

Reminiscences of a company every Friday. The business backbone of each district calls in the regular meeting according to the time point to complete the weekly regular meeting communication. The type of meeting is ()

A.

Meeting now

B.

Schedule a meeting

C.

Calling a SiteCall conference

D.

The system calls a meeting

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Question # 7

The human eye is more sensitive to brightness than to color. () Correct or Wrong

A.

Correct

B.

Wrong

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Question # 8

If AAC_LD uses a coding rate of 48kbps and a packing time of 20ms, what is the IP bandwidth occupied by the codec () kbps

A.

80

B.

74.4

C.

64

D.

76.6

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Question # 9

The standard auxiliary stream token management protocol recommended by the SIP protocol is () (single choice)

A.

H.239

B.

INFO

C.

BFCP

D.

H.245

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Question # 10

In the remote disaster recovery scenario, when the master node (U1981) fails, POTS user A of a branch node (The branch site equipment is U1911). If you make an outgoing call to the local PSTN user B through the branch node, the network element through which the SIP signaling of the call passes is ().

A.

U1911->Preparation U1981->U1911

B.

Prepare U1981->U1911

C.

U1911

D.

U1911->Main U1981->Backup U1981->U1911

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Question # 11

The SIP terminal sends an Invite request and enters the early dialog state after receiving a 180 response () Correct or Wrong

A.

Correct

B.

Wrong

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Question # 12

In the message classification of the RTCP protocol, which of the following messages describe the receiving statistics data of the receiving gateway? ()

A.

SR

B.

BYE

C.

RR

D.

SDES

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Question # 13

In the central networking mode of the converged conference MCU, what is correct about the traversal of public and private networks? () (Multiple selected)

A.

TE/RP/TP access MCU through SC proxy signaling and media stream

B.

eSpace Mobile accesses MCU C through SBC proxy audio and video media.

C.

External web client access MCU through MS proxy audio and video

D.

eSpace PC connects to MCU through SC proxy signaling and media stream

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Question # 14

The following description of the local regeneration function is wrong ()

A.

The central node and the local node are interconnected through SIP relay

B.

The heartbeat mechanism between the central node and the local node monitors the operating status of the peer device

C.

Under normal circumstances, the IP phone of the local node is registered at the central node

D.

The POTS phone of the local node is registered on the local node

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Question # 15

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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