Answer:
Option A, B, and C are correct options.
Step-by-step explanation:
While using a public wifi then, we have to ensure that the firewall of our computer system is on or other good antivirus software is installed in our computer system. we have ensure that the name of the network we are connecting with are legal or not and we also aware that you did not have a requirement to connect with the public network then, preventing the user of hotspot.
Option C is wrong because the following question is beside the point.