Continue your lesson
Follow traffic from the endpoint through each device, protocol, and service in the path.
Block 1 of 2Compare Virtual private cloud · Network function virtualization
Current · 15 min
Compare Virtual private cloud · Network function virtualization
Optional concept notes
Virtual private cloud
Creates a logically isolated customer network within a cloud provider.
Network function virtualization
Runs routing, firewall, or load-balancing functions as software.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Block 2 of 2Compare Software as a service · Infrastructure as a service
6 min
Compare Software as a service · Infrastructure as a service
Optional concept notes
Software as a service
Provides a complete managed application for customers to use.
Infrastructure as a service
Provides customer-managed compute, storage, and virtual networking resources.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Practice the reasoning here
Sketch a small network or packet path. Predict the expected state, introduce one fault, and identify the observation that isolates it.
- State the expected result before changing or testing anything.
- Name the observation, command, log, or report that would confirm it.
- Explain why the closest alternative does not fit the same requirement.
Check the whole objective
This unlocks objective 1.3 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.