300-445 Question 186
Single answerA user reports that they are unable to access an internal company resource via a web application. After reviewing the network assurance system logs, you observe the following:
- The user's device has an IP address assigned via DHCP.
- The user's default gateway is reachable.
- The DNS query for the resource resolves correctly.
- The resource's IP address is accessible from the user's subnet.
- The user's device is connected to the corporate Wi-Fi.
What is the most likely cause of the issue?
- A
The DNS server is misconfigured and not resolving the resource's IP address correctly.
- B
The user's VPN connection is not established, preventing access to internal resources.
- C
The corporate Wi-Fi network has a misconfigured VLAN, segregating the user's subnet from the resource's subnet.
- D
The resource's web application is down or not responding to requests.
Show answer and explanation
Correct answer: D
Explanation
In this scenario, the network assurance system data eliminates issues with the default gateway, DNS, and connectivity to the resource's IP address. Since the user is connected to the corporate Wi-Fi and there are no VLAN issues, the most plausible reason is that the web application is down or not accepting connections. This highlights the importance of isolating network issues from application issues during troubleshooting.
- A. Incorrect.
The DNS server is resolving the resource's IP address correctly, as mentioned in the scenario. Therefore, this is not the issue.
- B. Incorrect.
The user is connected to the corporate Wi-Fi, which implies that a VPN connection is not required or relevant in this specific scenario.
- C. Incorrect.
The logs indicate that the resource's IP address is accessible from the user's subnet, so there is no VLAN misconfiguration or network segmentation issue.
- D. Correct.
If all other network components are functioning correctly, the most likely explanation is that the web application itself is down or unresponsive.