H11-861_V2.0 Sample Questions Answers

The difference between Ad Hoc conferencing and traditional video conferencing systems is that you can create and join meetings on the terminal side without an administrator.

The three modes of operation of the proxy are: Call Stateful, Stateless, transaction Stateful.

Peer-to-peer calls between endpoints must use an MCU, but multipoint meetings can be scheduled without an MCU.

The switch port connected to the MCU must be: LOOM half-duplex. ( )

A SIP message consists of a start-line header, a header consisting of one or more fields (riold), and a blank line that marks the end of the header ( CRLF) and as an optional message body (message

boby) consists of. ( )

As Huawei's video service management platform, SMC platform manages and schedules video conferencing in a unified manner. It can realize all the meeting control operations in the video conference, and can provide customers with a convenient and fast conference management experience.

The SIP protocol is the session initiation protocol for establishing, controlling, and releasing sessions. ( )

Illuminance is based on the luminous flux received by the vertical surface as the standard, and if oblique illumination is used, the illuminance decreases. ( )

In logical SIP entities, UAS is used to initiate SIP requests and UAC is used to return SIP responses.

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

What is the role of the RTCP protocol. ( )

The SIP () was adopted in June 2002 , which is the core specification for the SIP protocol .

Desktop tones can be taken as skin color adjacent to color or gray, avoiding the same color of skin tone; Desktop reflectance should be higher than skin tone, highlighting the skin image.

Which of the following is a mixing strategy ( ).

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

When querying the "System Status" on the web interface of the RSE6500, which of the following information cannot be obtained?

SEC2.0 is suitable for network packet loss models that are burst-type packet losses.

The ability to exchange information includes ( ).

In the SMC2.0 system, which of the following user rights has the highest level.

In the H.323 protocol stack, what protocol is used by dual-streaming. ( )

During a peer-to-peer number call, H.245 performs capability set matching before opening the logical channel. ()

When managing mcCuus on the web, in the Export item under the Device Management page, the following cannot be exported as ().

What are the following message interactions included in the process of a terminal calling by number using the H.323 protocol?

Which of the following is not included in the main functions of the gateway gateway?

The terminal recording request will be sent to the MCU, and then the MCU will uniformly record and broadcast the operation.

When accessing a specified meeting via IVR, what is the default IVR Unified Access Number?

Which of the following protocols is used to propagate the stream between the MCU and the network recording server?

In any viewing mode, the venue can be viewed at any other venue.

What are the correct items in the following description of the RTCP protocol?

Web recording can record audio and video output from any venue in a video conference (voice, SD/HD/Zhizhen) and play it back on demand via Webcast.

During the meeting, in addition to recording the meeting content, the web recording service can also watch the meeting in real time through the live broadcast client.

How many GKs can a region contain?

The () phenomenon occurs in a conference when the microphone is used at the same time as the speaker and the sound system emits sound that can be collected by the microphone.

When the speech codec capability is negotiated in the SIP protocol, the voice codec supported by the local device is provided, including PCMU and PCMA Based on the RTP message shown in the figure, it can be seen that the ( ) voice codec is selected.

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

In Wireshark, the user can click a button to use a large number of bits in OSI model 2 through 7 Layers of agreements are filtered.

Enabling SEC, the system can automatically adjust the network transmission and different error corrections of AV processing for the rich QOS mode of the IP network After enabling SEC, the anti-packet loss ability has been greatly improved ()

A session-independent nature is that a SIP-URL represents a resource or user that needs to be accessed, and the message body can carry anything.

The color rendering index affects the reproducibility of the image, and when the color rendering index is low, the color of the image will deviate greatly from the original image. ( )

The basic concept of white balance technology is that "white objects can be reduced to white regardless of any light source", which is a case for color casts that occur when shooting under a specific light

source Compensation is made by reinforcing the corresponding complementary colors. ( )

Color temperature represents the most general indicator of the spectral quality of a light source in lux (Lux , lx ). ( )

Huawei's video product fault location method can be mainly summarized as, grain and grass first, follow the vine to touch the melon, step by step, bold and careful, and pass on the torch. ( )

In H460 networking, the H.245 TCP connection of the private network terminal is established with TS.

Dialogs can be divided into INVITE transactions and non-INVITE transactions, where the INVITE transaction in turn includes a request message and a response message.

Banners are used to briefly display meeting content, and subtitles are used to highlight the meeting topic.

On the terminal web page, you can set parameters for subtitles, which include banners, middle captions, and instant messages. Banners and middle captions can be displayed separately or at the same

time; Instant messages can be sent to peer-to-peer private chat, broadcast and sent, or sent at a designated venue.

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. ( )

For the SDP protocol, line c contains information about the connection established for a multimedia session, which indicates the IP address used by the real media stream . ( )

Forward Error Correction FEC enables super error correction when more than 0.1% of the media stream drops within 10S are detected after the two parties have established a call. The super error

correction function will divide the call bandwidth into a part and use it to transmit redundant code streams that are anti-packet loss.

GK can have only one prefix.

After the endpoint enables the NAT setting, it can change the packet content and can be used for static NAT networking mode and DNAT/NAPT networking mode.

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

The HD terminal provides remote control interface, web management, remote SSH function, and assigns a user name and password to each service.

Conversations are uniquely identified by Cal1-ID, From Tag, To Tag, and can be modified after they are created.

Which of the following measures can users use to expand the video port of the VP9650 ?

If the meeting scheduled by the user is not held on time, which of the following measures can be taken to solve this problem?

A high-definition video terminal (referred to as a terminal) is a codec that processes audio and video code streams and data code streams.

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

During the meeting, the output image of the venue screen changes color and the screen is flowered, which of the following measures can be taken to solve this problem?

By viewing the system information of Huawei terminals, we can view specifications such as voice, image, interface, and bandwidth.

The SIP protocol is an application-layer protocol.

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

Which of the following in the header domain is used to represent the SIP entity through which the request passes and the route response?

Which of the following is not a disadvantage of forward error correction ().

The extension requests the functionality of NOTIFY. ( )

H.460 Signaling interoperability scheme ( ).

HD terminal video output layout mode can be set to ( ) display mode.

The IP header in the ACF message does not contain any of the following information ( ).

Regarding the Client proxy in the H.460 protocol, the following description is correct ( ).

Currently, the MCU supports the upgrade methods ( ).

In audio encoding, which of the following is a speech quality metric. () (3 answers).

There are several ways to join an IVR meeting at a venue ( ).

RAS performs administrative functions, the main content of which includes ( ).

H.460 In networking, the communication between the terminal and the clientGK follows the protocol ( ).

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

Nlog v2.0 can export file formats including ( ).

After the terminal enables the NAT setting, it can change the content of the packet message, which mode can be used for NAT networking to achieve public and private network communication

Which of the following signalings is not an H.245 signaling. ( )

MP mainly completes those functions () later. (2 answers).

H.225 contains which of the following signalings (). (2 answers).

In the registration signaling process, the terminal initiates to GK which of the following messages represents a registration request ( ).

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

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

From the logs caught above, it can be seen that which of the following is the cause of the call failure?

The main roles of RTCP include ( ).

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