Systems Analysis and Development Week 5 Midterm Answers Strayer
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CIS 210 Systems Analysis and Development Week 5 Midterm Answers (2018) Strayer
1. Using prior experience to make time and cost estimates works best for large projects.
2. System developers can initiate a formal project as early as the preliminary investigation stage, or later on, as analysis, design, and implementation activities occur.
3. Although a Gantt chart provides more detailed information about a project, a PERT/CPM chart offers a rapid overview that graphically displays the timing, duration, and progress of each task.
4. To create use cases, you start by reviewing the information that you gathered during the requirements modeling phase.
5. Use cases cannot interact with other use cases
6. When the outcome of one use case is incorporated by another use case, we say the second use case uses the first case.
7. Class diagrams evolve into code modules, data objects, and other system components.
8. Some ____, which are enormously popular handheld computers, can accept handwritten input, while others have small keyboards.
9. A ____, such as Microsoft Outlook or Lotus Organizer, can help manage meetings, interviews, appointments, and deadlines and provide a personal calendar and a to-do list, with priorities and the capability to check off completed items.
10. When building an information system, all of the following basic guidelines should be considered except ____.
11. A systems analyst should provide ____ so managers can understand the full cost impact and timetable.
12. Sequence diagrams include symbols that represent all of the following EXCEPT ____.
13. In developing time and cost estimates, project managers must consider _____.
14. If only one person has the necessary IT skills and experience to evaluate systems requests, that person should consult closely with users and managers throughout the company to ensure that business and operational needs are considered carefully.
15. A systems project seldom produces significant changes in company operations.
16. The first step in evaluating feasibility is to accept and include all systems requests, even those that are not feasible.
17. In a data dictionary, some data elements have ____ rules, such as an employee’s salary must be within the range defined for the employee’s job classification.
18. A ____ description documents the details of a functional primitive, which represents a specific set of processing steps and business logic.
19. A data dictionary specifies a data element’s ____, which is the set of values permitted for the data element.
20. In a data dictionary, ____ is the maximum number of characters for an alphabetic or character data element or the maximum number of digits and number of decimal positions for a numeric data element.
21. In the model of the SDLC shown in the accompanying figure, the ____ usually begins with a formal request to the IT department, called a systems request, which describes problems or desired changes in an information system or a business process.
22. In the model of the SDLC shown in the accompanying figure, the purpose of the ____ is to build a logical model of the new system.
23. Data stores are shown in a context diagram because data stores are external to the system.
24. In modular design, each logical structure must have multiple entry and exit points.
25. In modular design, a rectangle represents a condition or decision, a diamond shape represents a step or a process, and the logic follows the lines in the direction indicated by the arrows.
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