Give examples of when you would prepare rough order of magnitude ( ROM), budgetary, and definitive cost estimates for an IT project. Give an example of how you would use each of the following techniques for creating a cost estimate: analogous, parametric, and bottom- up. Explain what happens during the process to determine the project budget. What is project portfolio management? Can project managers use it with earned value management? Describe several types of software that project managers can use to support project cost management.