The correct answer is B. SSID configuration, because controlling SSID visibility and behavior directly affects which wireless networks devices can see and attempt to join. In shared office environments, multiple Wi-Fi networks may be present, increasing the risk of users accidentally connecting to the wrong network.

According to the Quentin Docter – CompTIA A+ Complete Study Guide, SSIDs define how wireless networks are advertised and discovered. By modifying SSID settings—such as disabling broadcast or restricting auto-join behavior—technicians can prevent devices from attempting to connect to unauthorized or unintended networks.

The Travis Everett & Andrew Hutz – All-in-One Exam Guide explains that MDM solutions often preconfigure approved wireless profiles. Adjusting SSID configuration ensures devices only recognize and connect to sanctioned networks, reducing accidental associations and security risks.

The Mike Meyers / Mark Soper Lab Manual clarifies that IP filtering, content filtering, and port forwarding are network traffic control mechanisms. They do not prevent a device from seeing or attempting to connect to nearby Wi-Fi networks.

Because the goal is to prevent accidental Wi-Fi access, not filter traffic after connection, modifying SSID configuration is the correct and most effective solution.

A low-cost home lab for practicing server management and scripting strongly points to Linux because it is widely available at no cost and is designed to support many server-style workloads. The All-in-One guide states plainly: “Linux is a popular, free, open source operating system,” and notes that there are many distributions (distros), giving flexibility for different needs. Quentin Docter adds key context about Linux’s purpose: Linus Torvalds created it as “a completely open source operating system for the world to use… completely free for anyone to use,” and highlights that many Linux distributions exist today.

From a cost standpoint, Docter’s licensing section defines open source as “not only… free, but the source code… is also shared,” and explicitly lists “OSs such as Linux” as open source examples. This directly supports “low-cost.”

Finally, Linux is a common target environment for real server administration and scripting practice (shell tools, package repositories, services), making it the best match versus ChromeOS/macOS/Windows for this lab goal.

This is part of the user education step after a security incident to prevent future occurrences.

From Quentin Docter – Complete Study Guide:

“User education and awareness is a crucial part of preventing phishing attacks. After an incident, it is vital to train users on recognizing suspicious messages.” .

The correct answer is C. Switch the NIC settings from manual to automatic, which allows the computer to obtain an IP address dynamically from the DHCP server. When a static IP address is no longer required, reverting the network configuration to DHCP ensures the system integrates properly with the current network design.

According to the Quentin Docter – CompTIA A+ Complete Study Guide, DHCP simplifies network management by automatically assigning IP addresses, subnet masks, gateways, and DNS settings. Leaving a static IP in place can cause address conflicts or connectivity issues, especially when the device is repurposed.

The Travis Everett & Andrew Hutz – All-in-One Exam Guide explains that DHCP reservations are used when a device must always receive the same IP address, which is unnecessary in this scenario. Creating exclusions or manually changing the static IP does not meet the requirement to remove static addressing altogether.

The Mike Meyers / Mark Soper Lab Manual reinforces that switching the NIC to automatic configuration is the correct way to return a system to standard network operation and avoid manual IP management.

Because the static IP is no longer needed, enabling DHCP by setting the NIC to automatic configuration is the correct solution, making C the correct answer.

When an OS is no longer receiving updates, it is generally because it has reachedend of life (EOL), meaning the vendor has ceased support.

FromQuentin Docter – CompTIA A+ Complete Study Guide:

“End-of-life refers to the point when an OS vendor no longer issues updates or support. Systems at EOL pose security risks and must be upgraded or isolated.”