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Note! H11-879 has been withdrawn. The new exam code is H11-879_V2.0

H11-879 Practice Exam Questions with Answers HCIE-Enterprise Communication (Written) Certification

Question # 6

H.264 encoding, the main reason for blocking is () (single choice)

A.

The macro block is in the intense motion area, the difference is big, resulting in obvious edges

B.

The quantization level of the coding block jumps, resulting in sudden brightness changes at the boundary

C.

Unreasonable division of macroblock coding modes, resulting in false edges

D.

Deblocking filter (Deblocking) is not strong enough, resulting in not smooth edges

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Question # 7

Which of the following methods can reset the web login password of the TE terminal? () Multiple choice

A.

When the system is just started, long press the mode button of the TE30 terminal

B.

When the system is running normally, long press the Reset button on the TE60 terminal

C.

Log in to the TE40 terminal via SSH and enter web password 0

D.

Restore factory settings via remote control

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Question # 8

RSE6500 supports synchronous recording of three screens and telepresence for synchronous playback. The correct description of its implementation principle is () (single choice)

A.

The three-screen telepresence synthesizes a three-screen by itself, and then sends RSE to record

B.

Three-screen telepresence directly sends three streams to RSE for recording

C.

With the help of MCU, the three-screen telepresence is combined into a three-screen, and then sent to RSE for recording

D.

With the help of an analog video synthesizer, the three-screen telepresence is combined into a three-screen, and then sent to RSE for recording

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Question # 9

E1 and 4E1 lines do not support H.460 traversal networking. () Correct or Wrong

A.

Correct

B.

Wrong

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Question # 10

Regarding the IP phones and analog phones in the U1900 system, which of the following statements is correct ()

A.

If you want to successfully register IP phones A and B to the U1900 system, the U1900 system must include the MTU board

B.

When IP phones A and B have successfully registered to the same U1900 system, if IP phones A and B are able to dial each other, the U1900 system must include an MTU board

C.

When IP phone A and B have successfully registered to the same U1900 system, if IP phone A calls When calling IP phone B, IP phone B is busy, then if you need IP phone A to hear busy Line tone, the U1900 must contain MTU board

D.

If IP phone A and analog phone C (directly connected to the ASI board of U1900) are successfully registered to U1900, when A calls C, U1900 may not contain MTU board

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Question # 11

In the SIP session service, which of the following methods is used by the called terminal to realize the interaction of media capabilities? () (single choice)

A.

In the 100 trying message, carry the called SDP media capability

B.

In the 180 or 183 session progress message, carry the called SDP media capability

C.

In the 200 OK message, the called SDP media capability is carried

D.

Confirm in the ACK message

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Question # 12

In the Converged Conference 3.0 solution, no matter whether the multimedia cascade mode or the MCU center mode is used, all the audio and video media streams of the Web client need to be forwarded by the USM/MS system as a proxy? Correct or Wrong

A.

Correct

B.

Wrong

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Question # 13

In the VoIP system, what are the factors that affect the quality of voice calls? () Multiple choice

A.

Jitter

B.

delay

C.

Packet loss

D.

bandwidth

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Question # 14

In the Huawei eSpace UC solution, U1981, U1980, U1960, U1911 all support dual-system active and standby () Correct or Wrong

A.

Correct

B.

Wrong

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Question # 15

In video systems, image processing uses RGB color space. () Right or Wrong

A.

Right

B.

Wrong

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