Which three services Integrate with Oracle Cloud Infrastructure (OCI) Key Management? (Choose three.)

Which statement is true about OCI Architecture and its core components?

Which feature is NOT acomponent of Oracle Cloud Infrastructure (OCI) Identity and Access management service?

What is frequency of Oracle Cloud Infrastructure Usage Report generation?

You have a web application that receives 5X more traffic on the weekends than weekdays. You need to automatically match capacity to demand, keep the application always up and running, and save cost.
Which Oracle Cloud Infrastructure (OCI) compute feature can be used to meet these requirements?