Comprehensive and Detailed Explanation From Exact Extract:
This scenario describes a rogue access point - a malicious or unauthorized wireless access point that uses the same SSID as the legitimate network. Users may connect to it unknowingly, which can result in limited network access, data interception, or redirection of traffic. The inability to reach internal file servers supports this being an unauthorized AP with no connection to internal resources.
A: A DNS issue would impact name resolution, not connectivity to file servers directly.
B: VLAN issues generally affect segmentation, not mimic SSID problems.
C: An incorrect IP address could cause connectivity issues, but not in the presence of a malicious AP broadcasting the same SSID.
Reference:
CompTIA A+ 220-1102 Objective 2.4: Compare and contrast wireless and physical security threats.
Study Guide Section: Rogue access points and their detection

Comprehensive and Detailed Explanation From Exact Extract:
Windows 11 features a"Do Not Disturb"mode under Notification settings, which is designed to suppress interruptions during tasks like videoconferencing.
FromQuentin Docter - CompTIA A+ Complete Study Guide:
"Windows 11 introduces Do Not Disturb and Focus Assist under notification settings, enabling users to mute alerts during presentations or calls."

Comprehensive and Detailed Explanation From Exact Extract:
After containment and remediation, one of the final steps in incident response is user education. Since the root cause was a phishing attack, it is essential to educate users about identifying phishing attempts, safe browsing practices, and how to handle suspicious communications. This improves overall security posture and helps prevent future incidents.
A: Installing additional tools may be helpful but is a long-term step.
C: Flashing router firmware is not warranted unless the network hardware is known to be compromised.
D: Suggesting more advanced tools might be excessive given that the EDR successfully contained the incident.
Reference:
CompTIA A+ 220-1102 Objective 2.5: Given a scenario, detect, remove, and prevent malware using appropriate tools and methods.
Study Guide Section: Incident response and user education after a security event

Comprehensive and Detailed Explanation From Exact Extract:
RADIUS (Remote Authentication Dial-In User Service)provides centralized Authentication, Authorization, and Accounting (AAA) for users who connect and use a network service.
FromQuentin Docter - CompTIA A+ Complete Study Guide:
"RADIUS is a widely used protocol for implementing AAA in network environments, allowing centralized control over user access and accounting."

Comprehensive and Detailed Explanation From Exact Extract:
Thefirst stepin troubleshooting degraded mobile performance is typically arestart. This clears RAM and stops background processes that might be causing issues.
FromAll-in-One Exam Guide:
"Before taking invasive measures like a factory reset, always restart the device. A reboot clears temporary files and can significantly improve responsiveness."