Server through the network card PXE failed to start, which of the following methods are correct? (Multiple Choice)

Server through the network card PXE failed to start, which of the following methods are correct? (Multiple Choice)
A . Verify whether the network card supports PXE
B . Check whether BIOS PXE configuration, network card PXE and NIC UMC function is enabled
C . Check whether the network card fails
D . The service side checks whether the PXE network environment is configured correctly

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Answer: ABCD