VPNs & Proxies

21. What is two-factor authentication? Select all that apply.

  • a method that requires two usernames
  • a method where you need two passwords
  • a method where users are required to verify their credentials through a combination of hardware and/or software. Usually a username, password, and a short-lived token.
  • a method where you authenticate twice


22. VPNs are known as a _____ protocol.

  • network layer
  • data link layer
  • Connectionless
  • Tunneling


23. A proxy is something that _______________________.

  • communicates on behalf of something else
  • allows for many devices to speak to one other device
  • encrypts traffic sent across the Internet
  • sends data across a single network segment


24. What are some use cases for reverse proxies? Select all that apply.

  • IP address translation
  • Improved computer graphics
  • Encryption and Decryption
  • Load balancing


25. What was one of the first technologies that commonly utilized 2FA (Two-Factor Authentication)?

  • TCP
  • DNS
  • VPN
  • UDP

Networking Services Simulation

26. Let’s test your knowledge of networking services! You’re an IT Support Specialist at a new company. As your company grows, your manager asks you to solve various networking problems. Your task is to select the correct network device or server to solve the manager’s request.

Step 1: Read the manager’s request in the top-left corner of the screen. The manager’s request will be in the blue speech bubble next to the graphic of a person.

Step 2: Drag and drop the correct network device or server icon (e.g. DHCP) into the "drop here" box on the screen. If you make a mistake, click the back arrow button and try again.

Step 3: After you have completed all requests, close the quiz window and click the “Submit Quiz” button.

Good luck!

IMPORTANT: At the end of the interactive you will need to select the next arrow button one more time before clicking SUBMIT to receive a grade.

Devendra Kumar

Project Management Apprentice at Google

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