Chapter 23 Review

Which of the following is not an advantage of prototyping?

Adequately tested and documented systems.

Philosophy and principles for IS development in an unknown, rapidly changing environment

Agile development

Which of the following is not one of the difficulties software developers have experienced using the traditional systems development life cycle?

All are difficulties with the traditional SDLC

Which of the following is a true statement about prototyping?

All of the statements are correct.

Which of the following statements is false?

As an AIS increases in size and complexity, there is a greater likelihood that commercial software can be found that meets user needs.

Comparing systems by executing input, processing, and output tasks on different computer systems and evaluating the results

Benchmark problem

To compare system performance, a company can create a data processing task with input, processing, and output jobs. This task is performed on the systems under consideration, and the processing times are compared. The AIS with the lowest times is the most efficient. What is this process called?

Benchmarking (Measures system performance by comparing processing times)

Systematic approach to gradually and continuously improving business processes

Business process management

Thorough analysis and redesign of business processes and systems to achieve dramatic improvements; often a drastic, one-time-event

Business process reengineering

Partial system implementation that includes all significant architecture components

Executable architecture baseline

Produces higher quality software by taking best software development practices to very high levels

Extreme programming

Which of the following statements is true?

Outsourcers often buy the client's computers and hire all or most of its information systems employees.

Hiring an outside company to handle an organization's data processing activities

Outsourcing

Evaluating the overall merits of vendor proposals by assigning a weight to each evaluation criterion based on its importance

Point scoring

Customer is responsible for making sure the scrum team produces what is needed

Product owner

Companies that buy rather than develop an AIS must still go through the systems development life cycle.

True

Software and hardware sold as a package; the user can begin using the system after the vendor installs it

Turnkey system

Development framework with four phases: inception, elaboration, construction, and transition

Unified process

Helps determine whether a given feature works as intended.

Unit tests

Description of what a product owner wants to include in the system

User stories

When is it most appropriate to use prototyping?

When the final AIS cannot be clearly visualized because the decision process is still unclear.

Checks for incompatible interfaces between code segments

Integration tests

Which of the following is not a benefit of outsourcing?

It offers a great deal of flexibility because it is relatively easy to change outsourcers.

Prototype is discarded, but the system requirements identified are used to develop a new system

Nonoperational prototypes

Systems design approach where a simplified working model of an AIS is developed

Prototyping

Document that asks vendors to bid on a system to meet specified needs

Request for proposal

When a company is buying large and complex systems, vendors are invited to submit systems for consideration. What is such a solicitation called?

Request for proposal

Development focus is flexibility, responding to new requirements, adapting to changes, and quickly delivering a system to evaluate

Scrum development

Person who makes sure scrum practices are followed, holds daily team meetings, and works with product owners

Scrum master

Development methodology where teams work in intense, short, interative, incremental process to reach a common development goal

Scrum methodology

Company that rents cloud-based software applications that customers can access via the Internet

Software-as-a-service

Pre-determined time period where the team works on high priority items in the product backlog

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