CompTIA Network+ N10-009 Practice Question

Disabling unused ports and services is the most effective step in this scenario, as it immediately reduces the number of avenues an attacker could exploit to gain unauthorized access or disrupt network services. Changing the SSID, while useful for concealing network identity, does not itself secure the network against determined attackers who can still detect and connect using advanced tools. Scheduling regular updates is important for security but relates more to maintaining the security posture over time rather than an immediate hardening step.