Please answer asap

Processing that must be done to generate the presentation, such as editing input data or formatting output data occurs in the ____ layer. In an Agile project environment scope is driven by ____ and ____. When implementing a new system the most expensive of the four changeover methods is the ____ method. ____ is a strategy for correcting resource over- allocations. Testing two or more program modules that depend on each other to make sure that they work together properly, is called ____. The is a test performed on the final system wherein users conduct a verification, validation, and the audit test. A ____ is a graphical network model used to depict a project's tasks and their interdependencies. A ____ is a graphical diagram used to depict the hierarchical decomposition of the project into phases, activities, and tasks. ____ is a project scheduling strategy that establishes a project deadline and then schedules tasks backward from the finish date. A ____ is a [temporary] sequence of unique, complex, and connected activities having one goal or purpose and that must be completed by specific time, within budget, and according to specification