CIS339 EOC Questions - Chapter 15

CIS339 EOC Questions - Chapter 15 - EOC Questions Chapter...

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EOC Questions Chapter 15 Systems Analysis and Design with UML Version 2.0 Chapter 15 Installations and Operations 1. What are the three basic steps in managing organizational change? According to Kurt Lewin change is a three-step process: 1. Unfreeze - preparing people and the organization to break out of their current way of doing things 2. Move - transition from the old to the new way of doing things 3. Refreeze - establish the new system as the way things are done. 2. What are the major components of a migration plan? One part of the migration plan is the technical plan, which discusses how the new technology will be implemented in the organization. The other major part of the migration plan is the organizational plan, which helps users adjust to and adopt the new system. 3. Compare and contrast direct conversion and parallel conversion. Both conversion strategies focus on the way in which users are switched over to the new system. Direct conversion is an abrupt change: the old system is 'unplugged' and the new system is turned on. The users have no choice but to work with the new system. In the parallel conversion strategy, the new system is turned on, but the old system is used simultaneously for a time. Clearly, the direct strategy is more risky because there is no fallback if significant system bugs are discovered. With parallel conversion, the old system will still be available if there is a major bug discovered in the new system. However, the cost and extra work of using both systems simultaneously must be considered. 4. Compare and contrast pilot conversion, phased conversion, and simultaneous conversion. These terms refer to how the organizational locations are transitioned from the old system to the new system. In a pilot conversion, one location or part of the organization is converted first. The system is installed at that location and is used for a time until it appears to be stable (initial bugs discovered and fixed). Then the system is installed at the other locations. The pilot location serves as a shakedown site for the system. In the phased conversion approach, the system is installed sequentially at different locations. Gradually, the conversion process spreads across all locations until all have been converted. Simultaneous conversion means Page 1
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EOC Questions Chapter 15 that all locations are converted at the same time. With this strategy, there is no period in which some locations are using the old system and other locations are using the new system. 5. Compare and contrast modular conversion and whole system conversion. Whole system conversion means that the entire system is installed at one time. This is the most common circumstance. Modular conversion, in which the various modules or components of the system are installed gradually over time, is less common, but can be used if the system is large and complex and has been designed as a set of independent system modules. 6.
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This note was uploaded on 06/11/2010 for the course CIS CIS339 taught by Professor Valeriyarseniev during the Spring '10 term at DeVry NY.

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CIS339 EOC Questions - Chapter 15 - EOC Questions Chapter...

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