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HCNP-VC
H11-861_V2.0
HCIP-Video Conference V2.0 Questions and Answers

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Viewing questions 76-90 out of questions

Questions # 76:

During the terminal registration GK phase, the UDP header in the RRQ registration request message contains the following information ( ).

Options:

Caller Number

Caller CS addr

Caller RAS addr

GK RAS addr

Answer

C, D

Questions # 77:

H.460 The envelope in the media streaming interconnection scheme is created by which of the following protocols is established. ()

Options:

Q.931

H.460.18

H.460.19

H.225.0

Answer

Questions # 78:

At the UDP layer, H.323 protocols fall into three broad categories, where the functions of the terminal control class are not included. ( )

Options:

Transfer of data

Meeting Control Signaling

Call signaling for the endpoint

Negotiated signaling answer to logic channels and AV capabilities

Answer

Questions # 79:

Which of the following messages indicates that the SIP server failure could not complete the processing of the correct message. ( )

Options:

6xx

5xx

lxx

3xx

Answer

Questions # 80:

The 268.H.460 protocol is a firewall/NAT traversal standard approved by the ITU of the International Telecommunication Union and consists primarily of ( ).

Options:

H.460.18

H.460.19

H.460.20

Answer

A, C

Questions # 81:

The color rendering index affects the color of the video image. ( )

Options:

Color temperature

Reductive

Saturation

Brightness

Answer

B, C

Questions # 82:

Wireshark can support decoding of many protocols, such as ( ).

Options:

H.263

RTP

TCP

Answer

A, B, C, D

Questions # 83:

The following description of the cascading characteristics of the miniMCU is correct. () (3 answers).

Options:

MiniMCU terminals support up to three cascading conferences

Supports cascading conferencing in the primary miniMCU for conference control

Supports H.323 cascade port calls in cascading conferencing

Support for each terminal venue in a cascading conference to join the meeting as a SIP H323 call

Answer

B, C, D

Questions # 84:

The main role of the 317.H.245 protocol is ( ).

Options:

Real-time transmission

Competency Consultation

Video encoding

Media Control

Answer

B, D

Questions # 85:

Which of the following messages is used for endpoint registration ( ).

Options:

RCF

ACF

LCF

INAK

Answer

Questions # 86:

The following description of the advantages and disadvantages of forward error correction FEC is correctly ( )o

Options:

The latency requirements are high, and the existing network is difficult to use; Only has an effect on small packet loss scenarios; Aggravate image jitter

It basically does not occupy bandwidth resources and has little impact on image quality

Increase redundant data, occupy a certain amount of bandwidth, and reduce video efficiency; There is no way for sudden packet loss; Introduce a certain delay

Through the group combination check, it is possible to recover packet loss data with a certain probability, which is more effective for general packet loss scenarios

Answer

C, D

Questions # 87:

Packet capture of network data streams can be mainly achieved in the following ways. ( )

Options:

Go back to the multipoint meeting and capture

directly on the monitoring computer Back-to-peer, direct capture on the monitoring computer

Back in the capture

by leveraging the hub hub to copy the data of the detected port multiplexing Back to the switch's port mirroring feature for capture

Answer

A, B, C, D

Questions # 88:

During a point-to-point number call, the terminal ends up getting a ( ) of the peer terminal from GK to make the call.

Options:

Number

IP address

MAC

VLAN ID

Answer

Questions # 89:

The gatekeeper rejects the access authentication, address resolution request, and gives the resolution result, which of the following signaling can achieve this function