A user of the wireless network is unable to gain access to the network. The symptoms are: 1.) Unable to connect to both internal and Internet resources 2.) The wireless icon shows connectivity but…

A weak wireless signal would typically result in the wireless icon showing poor connectivity, intermittent drops, or no connection at all, rather than a consistent 'connected but no network access' state.

A DDoS attack against the RADIUS server would prevent users from successfully authenticating to the network, meaning the wireless icon would likely show an authentication failure or no connectivity, not a connected status with no access.

If the user's laptop only supports older WPA or WEP standards, it cannot fully establish a secure connection with a WPA2 Enterprise network, which mandates 802.1X authentication and AES encryption. While the device might initially associate with the access point (explaining the connectivity icon), the essential authentication and secure key exchange required for network access will fail due to this protocol incompatibility, preventing full network access.

While a full DHCP scope would prevent network access, the question emphasizes WPA2 Enterprise authentication and security groups, pointing to a security protocol or authentication issue as a more fundamental cause before IP address assignment.

Failure to update a dynamic encryption key would typically result in a complete connection failure or deauthentication, not a state where the device appears connected but has no network access due to a fundamental protocol mismatch.