[简答题]The video conferencing system shall be set with multipoint control unit (MCU), video conference terminal, conference room equipment and network management equipment, etc. When the video conferencing system based on H.323 protocol is adopted, gatekeeper (GK) and other equipment shall be set.

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[简答题]Signal signs shall be set at the left side in train operation direction, and the tuning zone sign of track circuit of double-track section shall be set at the outer side of the track.

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[简答题]The design of video system shall comply with the video monitoring requirements of railway transportation production, equipment supervision, emergency rescue and security precaution to fulfill the sharing of network resource and video information.

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[简答题]请简述Wi-Fi 6与Wi-Fi 5的区别。

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A.正确
B.错误

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