A Smart Switch Has the Ability to Monitor Electrical Levels

Multiple Choice

A smart switch has the ability to monitor electrical levels and shut off power to a building in the event of power surge or other fault situation. The switch was installed on a wired network in a hospital and is monitored by the facilities department via a cloud application. The security administrator isolated the switch on a separate VLAN and set up a patching routine. Which of the following steps should also be taken to harden the smart switch?

A) Set up an air gap for the switch.
B) Change the default password for the switch.
C) Place the switch in a Faraday cage.
D) Install a cable lock on the switch.