What three troubleshooting steps can a vSphere Administrator take?

An ESXi host has limited network connectivity.

What three troubleshooting steps can a vSphere Administrator take? (Choose three.)
A . Verify that all NICs are configured to support the promiscuous mode.
B . Verify that portfast (or equivalent) is enabled on all the physical switch ports that the ESXi host is connected to.
C . Verify that the speed and duplex of the network links are consistent.
D . Use ESXCLI to verify that the virtual switch NIC teaming is properly set.
E . Verify that all NICs connected to the same ToR switch are part of the same LA

Answer: B,C,D