Comprehensive and Detailed In-Depth Explanation: A rogue wireless access point is an unauthorized wireless network set up by an attacker or mistakenly by an employee. If the rogue AP has the same SSID as the legitimate network, users may unknowingly connect to it, causing security risks and preventing access to internal network resources. * A. Unreachable DNS server - Incorrect. A DNS issue would prevent access to websites, not just file share servers. * B. Virtual local area network (VLAN) misconfiguration - Incorrect. VLAN misconfiguration could restrict network access, but it would not involve an unsecured network with the same name. * C. Incorrect IP address - Incorrect. An incorrect IP could prevent network access but would not explain the presence of an unsecured network. Reference: CompTIA A+ 220-1102, Objective 2.5 - Wireless and Network Security Threats