Relevant Source Extract — Huawei Training Material, PDF page 69
Wired and Wireless Projection Adapts to Mainstream Devices. Dual-band and dual-Wi-Fi module, no interference between internet connection and projection. Wired projection: Type-C cable, HDMI cable. App-free projection: Projection through the drop-down menu, NFC projection.
Technical Deep Dive
Huawei IdeaHub B2 supports a range of wired and wireless projection methods, including HDMI, USB Type-C, IdeaShare, and compatible mobile-device sharing functions. DLNA describes a family of network-media interoperability mechanisms used to discover compatible media receivers and transmit supported content across an IP network. This is different from full-screen desktop mirroring, although a device may implement both classes of feature.
The crucial ambiguity is the phrase 'when the screen is off.' A display may be dark while its system remains in standby and some network services continue operating. A fully powered-down device generally cannot receive media without a separately powered wake or management function. Whether DLNA reception continues in standby depends on firmware and power-management configuration. The original question bank expects TRUE, but the V2.0 training pages examined do not explicitly document DLNA receiving while the screen is off. The answer should therefore remain provisional and the stem should specify display-only sleep mode if that is the intended behavior.
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