300-445 Question 191
Single answerAn employee reports that they are unable to access a company-hosted website while connected to the corporate wireless network. To troubleshoot, you collect the following data:
- The employee's device has a valid IP address, subnet mask, and default gateway.
- The device can successfully ping the default gateway.
- DNS resolution for external domains is successful.
- The device cannot establish a connection to the website's IP address.
- Other employees on the same wireless network can access the website without issues.
Based on this information, what is the most likely cause of the issue?
- A
The DNS server is misconfigured on the employee's device.
- B
The website's IP address is blocked by a firewall for the employee's device.
- C
The employee's device has an incorrect default gateway configured.
- D
The corporate wireless network is experiencing intermittent connectivity issues.
Show answer and explanation
Correct answer: B
Explanation
The troubleshooting data rules out DNS issues, default gateway misconfiguration, and wireless network problems since the device has a valid network configuration, successful DNS resolution, and other users on the same network can access the website. The inability to connect to the website's IP address likely indicates a firewall rule or security policy blocking the employee's device specifically.
- A. Incorrect.
This is incorrect because DNS resolution for external domains is successful, indicating the DNS server is functioning properly for the employee's device.
- B. Correct.
This is correct because the inability to establish a connection to the website's IP address, despite other employees being able to access it, suggests that a firewall rule may be blocking the employee's device specifically.
- C. Incorrect.
This is incorrect because the employee's device can successfully ping the default gateway, which indicates the default gateway configuration is correct.
- D. Incorrect.
This is incorrect because other employees on the same wireless network are not experiencing issues, which rules out general wireless connectivity problems.