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H11-861_V2.0 Exam Dumps - HCIP-Video Conference V2.0

Question # 4

SIP messages are encoded as text.

A.

True

B.

False

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Question # 5

Under the video service, the public network call private network is not accessible, and the public and private network traversal technology used is generally the same as the private network call public network

A.

NAT

B.

SNP

C.

ALG

D.

H.460

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Question # 6

The following six main request messages are not part of the SIP protocol. ()

A.

ACK

B.

CANCEL

C.

SETUP

D.

BYE

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Question # 7

The following description of hd terminals is correct ( ) ·

A.

T. 140 subtitles include banners, middle captions, and instant messages, which can be configured to be displayed on different output ports

B.

The output interface selection shows H. 239 to display both mainstream and secondary streams

C.

The clear and smooth policy does not require special settings, and the primary and secondary stream video protocols are set to Auto in the "Meeting Parameters" of the terminal TEB page, in A clear and smooth strategy during the call will work

D.

Camera parameters such as exposure mode and white balance mode can only be set on the terminal web page

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Question # 8

Multi-channel cascading, mainly through the establishment of multiple cascaded channels between the cascading conferences of the MCU, the multi-channel code stream on the MCU is sent to the peer

MCU.

A.

True

B.

False

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Question # 9

The processing process of audio signal from input to playback mainly includes: analog audio signal input, sampling quantization/encoding, playback, decoding, transmission/ Storage.

A.

True

B.

False

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Question # 10

In the camera control of the WEB interface, only the local camera can be controlled, not the remote camera. ( )

A.

True

B.

False

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Question # 11

H.460.19 specifies the public-private network traversal processing of H.323 call control signaling.

A.

True

B.

False

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Question # 12

The chromatic aberration (YPbPr) output supports both 16:9 and 4:3.

A.

True

B.

False

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Question # 13

When the MCU is working in wall riding mode, GE0 is registered with switch center and GE1 can only support IP address calling.

A.

True

B.

False

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Question # 14

Response messages are used to respond to request messages that indicate the status of success or failure of a call, and different types of response states are distinguished by status codes, which contain

three-digit integers, the first bit of the status code Used to define the response type, the other two digits are used to further explain the response in more detail. ( )

A.

True

B.

False

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Question # 15

The INFORMATION that the IP header in the SETUP message does not contain Is there? ( )

A.

Caller CS addr

B.

Caller RAS addr

C.

Callee CS addr

D.

GK RAS addr

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Question # 16

Zone management is implemented by which of the following system modules ( ).

A.

GK

B.

SMC

C.

MCU

D.

HD Terminal

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Question # 17

The following description of the H.323 call flow is correct

A.

RAS, RTP/RTCP are hosted in UDP protocol layer

B.

Q.931 Common port: 1719

C.

AS Common Port : 1720

D.

Q.931, H.245 hosted in the TCP protocol layer

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Question # 18

H.323 The last digit 3 in the protocol represents ().

A.

B-ISDN-based network

B.

Based on networks with quality of service assurance

C.

Networks based on packet transfer protocols

D.

GSTN- and wireless network

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Question # 19

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

A.

Go back to the multipoint meeting and capture

B.

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

C.

Back in the capture

D.

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

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Question # 20

The role of RTP in VoIP mainly includes: real-time transmission of media information, elimination of jitter, card performance, prevention of packet loss, in a certain situation can be transmitted DTMF signals,

tones and signaling.

A.

True

B.

False

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Question # 21

The MCU encodes each terminal image that needs to be added to the multi-screen combination, and when combined into a road image, it is transmitted to all terminals viewing the multi-screen

A.

True

B.

False

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Question # 22

Diagnosis of peer-to-peer networks without networking traversed by public and private networks. ( )

A.

True

B.

False

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Question # 23

TCs are capability exchange requests that inform the peer of the capability information ( ).

A.

True

B.

False

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Question # 24

There are ways to join an IVR meeting at a venue. (Fill in the blanks)

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Question # 25

Which of the following messages indicates that the request cannot be implemented on any SIP server . ( )

A.

3 xx

B.

5xx

C.

lxx

D.

6xx

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Question # 26

What are the main ways to map NAT? ( )

A.

Static address mapping

B.

Port mapping

C.

Protocol mapping

D.

Dynamic address mapping

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Question # 27

What addresses are typically included in the RRQ message for the GK registration record address when the node is registered? ( )

A.

Caller Cs Addr

B.

Poxy Addr

C.

Caller Number

D.

Caller RAS Addr

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Question # 28

Network recording supports downloading the recording file to the local area in ( ) format, and supports local playback.

A.

FLV

B.

WMV

C.

RMVB

D.

MTV

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Question # 29

The following description of HD terminals is correct ( ).

A.

HD video terminals cannot communicate with SD video terminals

B.

HD video terminals must be registered with GK in order to communicate

C.

Hd video terminals support remote control of the camera

D.

HD video terminal Web page password can not be empty

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Question # 30

In the Early state, the caller can end dialog0 by sending ( ).

A.

BYE

B.

CANCEL

C.

UPDATE

D.

NOTIFY

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Question # 31

Call process signaling CALL PROCEEDING is a message sent by the caller to the called, indicating that the call is being processed.

A.

True

B.

False

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Question # 32

Which of the following messages belongs to the extension request message. ( )

A.

MESSAGE

B.

OPTIONS

C.

INVITE

D.

REGISTER

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Question # 33

Which of the following messages is not a status query message. ( )

A.

IRQ

B.

RRQ

C.

IACK

D.

IRR

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Question # 34

SDP It is not a transport protocol, it uses the appropriate protocol to get the job done, including protocols such as ( ).

A.

SAP

B.

H.323

C.

HTTP

D.

SIP

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Question # 35

In the Early state, dialog can be terminated by ( ).

A.

The caller sends a BYE

B.

The caller sends CANCLE

C.

Called Failure Response

D.

Called to send BYE

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Question # 36

The default mode of operation for the GE1 port of the MCU is ( ).

A.

Ride the Wall

B.

Grab Package

C.

backup

D.

Dynamically switch

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Question # 37

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

A.

6xx

B.

5xx

C.

lxx

D.

3xx

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Question # 38

The MCU supports ( ) web users logging in at the same time.

A.

1

B.

2

C.

3

D.

Multiple

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Question # 39

The MCU node number after the meeting, consisting of ( ).

A.

MCU prefix

B.

Subconference No

C.

Service area code

D.

Venue Number

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Question # 40

What is the role of the RTCP protocol. ( )

A.

Ability set

B.

Transmission Control

C.

Streaming

D.

Call signaling

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Question # 41

Regarding the auxiliary IP of high-definition terminals, the following statement is wrong ( )o

A.

Terminal

B.

can be accessed through this IP You can leave it blank

C.

For intra-LAN terminal debugging

D.

For the main business

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Question # 42

Illuminance, color temperature, white balance and color rendering index, these four indicators of light, have an important impact on the actual image effect of the video conference.

A.

True

B.

False

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Question # 43

For request messages, which of the following is not required. ( )

A.

Header Domain

B.

Request line

C.

Response line

D.

Message body

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Question # 44

The system uses the H.245 protocol as the control protocol for controlling the communication channel. ( )

A.

establish

B.

Bandwidth limit

C.

release

D.

Maintenance

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Question # 45

According to H. 323t, the signaling required to complete the process of exchanging capabilities is. ( )

A.

DRQ , DCP

B.

MSDR , KSDA

C.

TCSR , TCSA

D.

GRQ, GCF

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Question # 46

HD terminals support peer-to-peer () calling. (3 answers).

A.

Number

B.

Venue name

C.

MAC address

D.

IP Address

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Question # 47

Under static NAT networking, the signaling description of the public network terminal calling the private network terminal is wrong? ( )

A.

Callee Cs addr is the NAT address

B.

Caller Cs addr is the NAT address

C.

The DST address actually processed by the firewall is the private network terminal address

D.

The DST address of the public endpoint is a NAT address

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Question # 48

The RTCP protocol can be freely controlled by SDES grouping, with RTCP SDES marking members away from the session, or members changing SSRC.

A.

True

B.

False

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Question # 49

H.264 video divides the image into three types of frames: I, P, and B, with I frames encoded between frames and P frames encoded in-frame.

A.

True

B.

False

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Question # 50

What are the correct items for the following description of the performance of the RSE6500 product?

A.

Supports up to 30-channel meeting HD recording

B.

Smooth scaling can be achieved by adding Licenses

C.

Supports up to 20 HD live streams

D.

Supports up to 2000 web-on-demand

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Question # 51

Video IVR, on the basis of audio IVR, adds a video interactive interface, which can more easily and intuitively guide users to join a conference or create a conference on the terminal side. ()

A.

True

B.

False

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Question # 52

Protocol is a firewall/NAT traversal standard approved by the ITU of the International Telecommunication Union, which two protocols are mainly composed?

A.

H.460.20

B.

H.460.18

C.

H.460.17

D.

H.460.19

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Question # 53

The ( ) function in Wireshark visualizes the conversational communication process graphically.

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Question # 54

Only if the peer supports T.140, it can be implemented to send banners, subtitles or short messages to the specified venue in the T.140 mode.

A.

True

B.

False

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Question # 55

RFC2190 defines a total of three formats of load heads for the H.263 video codec format: mode A, mode B, and mode C.

A.

True

B.

False

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Question # 56

The RTP protocol provides both real-time transmission capabilities and service quality assurance mechanisms.

A.

True

B.

False

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Question # 57

Which of the following devices does NLOG V2's data come from?

A.

SMC

B.

GK

C.

Terminal

D.

MCU

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Question # 58

In the networking, in which stage of signaling transmission occurs, such as the transmission keep-alive duration, keep-alive port, and keep-alive fields?

A.

ARQ message in the

B.

OLC message In the

C.

ACF message in the

D.

IIR message

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Question # 59

In the H460 network, the transmission keep-alive duration, keep-alive port, and keep-alive fields are in the signaling transmission stage. ()

A.

ARQ message in

B.

ACF message

C.

OLC opens logic channel during

D.

IIR message

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Question # 60

As can be seen from the figure, the venue can not receive remote venue video in the meeting, what measures can the user take to locate the cause of the failure?

A.

Check the remote venue camera condition

B.

Check the video input of this terminal venue

C.

Check the microphone situation in this terminal

D.

Check the remote venue video input

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Question # 61

The basic functions of the firewall include: content filtering, user authentication, VPN, Application Proxy, NAT, packet filtering & state detection, IDS and alarms, logs, etc.

A.

True

B.

False

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Question # 62

What are some of the following ways to create a video IVR meeting?

A.

Call the IVR access number and create a meeting according to the IVR prompts

B.

Call the IP address of the GK, create a conference

C.

call the conference access number according to the IVR prompt, and create a conference

D.

according to the IVR prompt Call the IP address of the MCU and create a conference answer based on the IVR prompt

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Question # 63

A single value in a header field can only appear once in a message, such as Via, Route, etc.

A.

True

B.

False

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Question # 64

GK can have only one prefix.

A.

True

B.

False

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Question # 65

During software installation, GK can only be installed on the C or D disk of the operating system .

A.

True

B.

False

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Question # 66

mode, communication between public and private network devices is supported, and data does not need to go through a firewall.

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Question # 67

As shown in the figure, the RTCP instance flow includes SR, RR, and ( ) messages.

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Question # 68

The multi-channel cascade feature requires that the video protocol of all multi-channel venues be consistent, and the bandwidth can be different. ()

A.

True

B.

False

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Question # 69

PCM coding mainly includes three processes: sampling, quantization, and coding. ()

A.

True

B.

False

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Question # 70

The H460 protocol is a firewall/NAT traversal standard approved by the ITU of the International Telecommunication Union and consists primarily of (). (2 answers).

A.

H460.17

B.

H460.18

C.

H460.19

D.

H460.20

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Question # 71

Multicast is a networking technique that allows one or more senders (multicast sources) to send a single packet to multiple receivers (once, simultaneously).

A.

True

B.

False

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Question # 72

As shown in the following figure, when the user presses the "+", "-" or arrow keys in the camera control interface of the terminal, he finds that the camera at this end does not respond, which of the following is not the possible cause of the problem

A.

The control cable of the camera is not connected to the terminal

B.

Parameters such as camera type and serial port are set incorrectly

C.

The "Local Camera" selected the wrong object, resulting in the inability to control the target camera

D.

The Video Surveillance feature is not enabled

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Question # 73

Which of the following types of RTCP messages is used to describe the source from which the RTCP packet was sent?

A.

SR

B.

APP

C.

SDES

D.

RR

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Question # 74

capability negotiation is primarily used to declare the receiving and sending capabilities supported by this side. When declaring the priority capability set of this end, the other party needs to prioritize the use of the ability set.

A.

True

B.

False

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Question # 75

When the Huawei video terminal is successfully connected to the camera, the user can set the camera parameters through the web interface of the terminal, such as exposure mode, white balance mode, noise reduction, etc., where the larger the noise reduction value setting, the less noise in the picture and the clearer the details of the image.

A.

True

B.

False

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Question # 76

In the design of the conference room, it is necessary to avoid direct illumination of the top light and metering from the top or window, which will directly cause the impact.

A.

True

B.

False

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Question # 77

Voice enhancement technology, automatic noise suppression ANR can solve the problem of the overall low or high call volume in the line.

A.

True

B.

False

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Question # 78

In an RTP message, Timestamp reflects the sampling moment of the first bit in the RIP packet. The instantaneous accuracy of sampling must meet the synchronization requirements for synchronization and jitter calculations. The starting value of the time flag is random and will be incremented with the size of the message data.

A.

True

B.

False

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Question # 79

A multi-screen conference needs to occupy the MCU one-way multi-screen encoding resources, and N sprites need N/2 multi-screen decoding resources.

A.

True

B.

False

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Question # 80

The role of the RTP protocol is ( ). (Fill in the blanks)

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Question # 81

The Call-ID header field serves as a unique identifier for a collection of messages, and in a conversation, the Call-id must be the same in all the last requests sent by each UA. ( )

A.

True

B.

False

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Question # 82

In the Contirmed state, both the caller and the caller can end dialog through ByE. ( )

A.

True

B.

False

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Question # 83

SEC: Super Error Concealment is an anti-packet loss technique using the ARQ algorithm.

A.

True

B.

False

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Question # 84

GK supports the resolution of the called number to the neighbor GK when the called node belongs to the neighbor GK area based on the called number.

A.

True

B.

False

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Question # 85

Non-T.140 subtitles only support sending and receiving subtitles from H.323 type terminals.

A.

True

B.

False

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Question # 86

Wireshark can not only monitor the network, but also process network data. ( )

A.

True

B.

False

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Question # 87

The color temperature is defined by the absolute black body, the radiation of the light source in the visible region and the radiation of the absolute black body are exactly the same, at this time the Kelvin

temperature of the black body is called the color temperature of this light source. ( )

A.

True

B.

False

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Question # 88

T.140 Subtitles support sending and receiving subtitles from SIP, H.323 type terminals.

A.

True

B.

False

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Question # 89

In the multi-channel cascade feature, up to 32 cascaded channels between two MCUs in the same meeting.

A.

True

B.

False

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