During a point-to-point call between different GKs, the local GK sends an LRQ request to the neighboring GK to query the information about the called node.

• A.TRUE
• B.FALSE

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Which of the following network elements can be utilized to centrally manage and control, remotely schedule shutdowns, and perform batch OTA upgrades for 10,000 IdeaHub ES2 Plus devices?

• A.iManager U2000
• B.IdeaManager
• C.eSight
• D.SMC

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Currently, the widely used video compression standards include H.263, H.264, H.265, MPEG-1, MPEG-2, and MPEG-4. The H.26X series standards are mainly used for real time video communication, and the MPEG series standards are mainly used for video storage (DVD), video broadcast, and video streaming media.

• A.TRUE
• B.FALSE

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In a Huawei video conference, which of the following may cause echoes or even high-pitched noises when the local participant speaks? (Choose all that apply.)

• A.The endpoint's input volume is lower than the minimum energy threshold required for echo cancellation.
• B.Another participant whose speaker is turned off is at the local site.
• C.An audio loop exists. The external audio device feeds back the sound from the endpoint output port to the endpoint input port.
• D.The microphone is too close to the speaker.

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Which of the following registration information types are carried in an RRQ to register with the GK? (Choose all that apply.)

• A.MAC address
• B.Port number
• C.IP address
• D.H.323 ID

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