VPN Connectivity Diagnosis 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 utility is most effective for verifying if a specific DNS server is resolving hostnames correctly for your VPN tunnel?
  2. A user can connect to the VPN, but they cannot access internal file shares by hostname. However, they can access them by IP address. What is the most likely cause?
  3. If a user reports 'VPN connected' but cannot reach any internal resources, and the routing table shows no routes directed through the VPN interface, what is the primary issue?
  4. A VPN user experiences intermittent connection drops. You notice that the MTU size on the VPN interface is 1500, but the ISP connection has a lower MTU due to overhead. What is the most likely result?
  5. While troubleshooting a VPN, you notice the client receives a 'Dead Peer Detection' (DPD) timeout error. What does this indicate?

Answers and explanations come after you submit.