How does AirPort Utility communicate with remote/relay AirPorts?

1. Wireless case: Does the AirPort Utility always try to communicate with remote/relay AirPorts directly, or does it use the network WDS when another AirPort provides a stronger signal? If it's the former option, this might explain why people have problems sometimes configuring distant AirPort base stations in WDS setups. If it's the latter option, problems with configuring a distant AirPort might be caused by improper configuration of the AirPort providing the strongest signal (presumably, the nearest).
2. Ethernet case: When one attempts to configure an AirPort via Ethernet, does it matter whether the AirPort is configured to connect to the internet via Ethernet (vs. wirelessly)?

Thanks for the replies Bob

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