CompTIA CySA+ (CS0-001) — Question 177

A company provides wireless connectivity to the internal network from all physical locations for company-owned devices. Users were able to connect the day before, but now all users have reported that when they connect to an access point in the conference room, they cannot access company resources. Which of the following BEST describes the cause of the problem?

Answer options

• A. The access point is blocking access by MAC address. Disable MAC address filtering.
• B. The network is not available. Escalate the issue to network support.
• C. Expired DNS entries on users' devices. Request the affected users perform a DNS flush.
• D. The access point is a rogue device. Follow incident response procedures.

Correct answer: D

Explanation

The correct answer is D because a rogue access point can create significant security risks by allowing unauthorized access to the network, which would explain the inability to connect to company resources. Options A, B, and C suggest issues that are less likely to be the root cause, such as MAC address filtering, network outages, or DNS problems, none of which account for the sudden inability to access resources from a previously functional access point.