In this scenario, the user cannot access a separate subnet, and all other checks (credentials, network stability, and permissions) have been verified. The next logical step is to check if the user's IP address is being blocked by a firewall.
* Option A: Consult with the firewall team to see if the user's IP address is blockedFirewalls can block specific IP addresses, preventing access to certain network segments. Given the problem's nature and the steps already taken, this is the most logical next step to ensure the user's IP is not inadvertently blocked.
* Option B: Delete the user's credentials and create new onesThis step is unnecessary since the credentials have already been verified as correct.
* Option C: Run a virus scan on the user's workstationWhile important for overall security, a virus scan is unlikely to resolve an issue specific to accessing a subnet if the problem does not affect other users.
* Option D: Update the network drivers on the user's workstationIf the network connection is stable and the issue is isolated to accessing a specific subnet, network drivers are unlikely to be the cause.
References:
* CompTIA A+ 220-1102 Objective 2.0 (Security), particularly firewall settings.