DNS Resolution Troubleshooting Quiz

5 questions Pass: 70% +25 pts (50 with Pro)

Quiz covering DNS and VPN Issues

What you'll be asked

  1. Which command-line tool is most commonly used to test if a DNS server is successfully resolving a specific domain name?
  2. A user reports that they cannot access internal company resources while connected to the VPN, even though they have internet access. What is the most likely cause?
  3. After updating a DNS record for a web server, users continue to see the old IP address. Which command should you run on the client machine to clear the local DNS cache?
  4. You are troubleshooting a VPN connection where the user can ping the internal server by IP address, but not by hostname. What is the primary area to investigate?
  5. When troubleshooting a 'DNS server not responding' error, you discover that the client is using a public DNS server (8.8.8.8) while trying to reach an internal resource that requires a private DNS zone. How does the DNS hierarchy cause this failure?

Answers and explanations come after you submit.