Answer: MAC filtering
Step-by-step explanation:
MAC(Media access control) filtering is type of access control for maintaining security of the network .It does not prevent any unauthorized access or hack attempt rather it provides option to the legal user to opt which device can connect to network through online mode.
- According to the question,Jacob can use Mac filtering as an extra measure to safe-guard his wireless network.
- It will permit him to approve or disapprove devices to connect to his network accordingly as per his wish and thus ,security can be maintained in this way.