What are the key components of the communication model?

A large project requires new equipment to support the project execution. The procurement manager communicated to the project manager that the delivery of the newly purchased equipment will be delayed. The project manager is concerned that this will directly effect the project schedule.
What should the project manager do next?

An output of the Create WBS process is:

Which of the following is an input to Control Scope?

In an agile project, the learn planned to complete 40 story points in an iteration, but only completed 30 story points. What is the schedule performance index (SPI)?