Which two conditions should the network engineer verify?

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The network engineer powers on a new S-Series switch. None of the devices connected to this new switch are responding to pings.

Which two conditions should the network engineer verify? (Choose two.)
A . an ARP table is configured
B . the switch has a default Gateway
C . ports are not shut down
D . OSPF is enabled
E . ports are in switchport mode

Answer: AC