SDD 9.1.2 Software Development Approaches

A large bank is introducing a new computer-based system.

Parts of the old system will be replaced one by one until the new system is in place.

Which implementation method is being used by the bank?

• Phased

• Parallel

• Prototyping

• Direct cut over

Answer explanation

The bank is implementing the new system by replacing parts of the old system one by one until the new system is fully in place, which is characteristic of the phased implementation method.

The leaflet shown is sent by a web design company to potential customers.

Which software development approach is being described in this leaflet?

• End user

• Pilot

• Prototyping

• Structured

Answer explanation

The leaflet describes the process of quickly creating a model of the website to gather feedback and make improvements, which aligns with the Prototyping software development approach.

Which of the following is the most effective in managing changes and versions during system development?

• CASE tools

• Gantt charts

• Progress logs

• Document flowcharts

Answer explanation

CASE tools are the most effective in managing changes and versions during system development as they provide comprehensive support for version control, change management, and documentation.

Which row of the table best matches an installation method with a valid reason for choosing that method?

• Pilot - The new system is only for a small number of users

• Direct cut over - Training time is needed in the new system

• Parallel - The availability of the data in the system is critical

• Phased - Resources are not available for a proper trial of the new system

Answer explanation

The best match is Parallel because it allows for the critical data to remain available during the transition to the new system.

Which of the following is usually a benefit of using the pilot method of installation?

• The development time is reduced.

• A backup of data is created for each new transaction.

• The personnel involved can be available to train others.

• CASE tools can be more effectively used.

Answer explanation

The personnel involved can be available to train others, which is a benefit of using the pilot method of installation.

A company needs to replace its existing software but
it does not have any software development capabilities.

Which of the following best solves this problem?

• Develop the software inhouse

• Outsource the development of the software

• Simplify the specifications for the new software

• Buy off-the-shelf software that meets some requirements

Answer explanation

Outsourcing the development of the software is the best solution as the company lacks software development capabilities.

A company spent a month training its staff before replacing its main software.

After training was completed, the company switched to the new software.

Which installation method was used?

• Pilot

• Phased

• Parallel

• Direct cut over

Answer explanation

The company directly switched to the new software after training, indicating a direct cut over installation method.

Which of the following is a possible reason for developers to use CASE tools?

• To automate data entry processes

• To install packages on remote systems

• To link external modules with internal modules

• To automate some of the tasks when creating software

Answer explanation

Developers use CASE tools to automate some of the tasks when creating software, making the correct choice.

A project team has been contracted to develop a project
but the client is uncertain about the requirements.

Which software approach would be best to clarify the requirements?

• End user

• Structured

• Prototyping

• Rapid application development

Answer explanation

Prototyping would be the best software approach to clarify requirements when the client is uncertain, as it allows for creating a working model to gather feedback and refine the requirements.

A developer uses existing modules of code to meet a client’s needs quickly.

Which development approach is being used?

• Agile

• End user

• Prototyping

• Rapid application development

Answer explanation

The developer is using the Rapid Application Development approach by utilizing existing modules of code to quickly meet the client's needs.