System Development Life Cycle (SDLC)

Ensuring that the system is accessible to all users including those with physical challenges is which system requirement? a. User needs b. Security c. Accessibility

c. Accessibility

User needs are identified during _________________________. a. preliminary investigation b. physical design c. analysis

c. analysis

_____________________________ is when programmers write the code for the software. a. physical design b. logical design c. implementation

c. implementation

The steps of the system development life cycle are:

1. Preliminary investigation 2. Analysis 3. Logical design 4. Physical design 5. Implementation 6. Maintenance

System Development Life Cycle (SDLC)

A process for planning, creating, testing, and deploying information systems, including hardware and software

user needs

Accessing account information is a user requirement

phased conversion

Deploys a subset of the system first, rather than deploying the whole system at once

user acceptance testing

Employed to assess whether the system does what the user expects and to ensure that it functions in a way that is useful to the user.

alpha testing

Occurs where the system will be used. During alpha testing, system developers often assist end users as they interact with the new system. It is common for simulated data to be used to prevent any damage to a user's actual data.

logical modeling

describes the system in abstract terms without concerning yourself with how the actual system will be implemented

What type of system conversion is this? The IT department developed a new system for tracking return on investment and are doing an initial implementation in the marketing department. If that implementation goes well, they will implement the new system in other departments as well.

pilot

logical design

the logical models developed during the second step are revised to ensure that the new system will meet the user requirements identified in the first step

parallel conversion

the old and new systems run simultaneously for a short time to ensure the new system works correctly

physical modeling

the representation of a data design implemented in a database system

preliminary investigation

the team assesses the feasibility of the proposed project and selects a development methodology.

beta testing

The tests are performed by the end user without any assistance from the system developers. Beta testing uses actual (i.e., live) data in the real working environment.

maintenance

modifications or corrections to the system are made

System conversion can occur as:

Direct Conversion Parallel Conversion Pilot Conversion Phased Conversion

deployment

Once all the steps of SDLC have been completed, the system is ready to be deployed. During deployment, three things usually occur: 1. System conversion (which means replacing the old system with the new system) 2. Final documentation 3. End-user training

implementation

Programmers begin converting the models from the previous steps into the actual system, for instance, by developing databases and other software programs that will be needed. This step also includes installing hardware, testing the system, and training the end users.

physical design

The logical models are converted into physical models and may include network maps and descriptions of servers and other devices to be used in the system

direct conversion

The old system is "turned off" and the new system is "turned on" at a specific date and time. After the conversion, the old system is no longer available to end users.

analysis

The team determines the user requirements for the new system and develops logical models of the system (i.e., graphic displays that demonstrate the relationships between resources, activities, and outputs and outcomes)

pilot conversion

This involves starting the conversion with a portion of the end users, for instance in a specific geographic region or a department in an organization

During the implementation stage, which testing method uses simulated data and is assisted by system developers? a. Alpha b. Beta c. User Acceptance

a. Alpha

Examples of logical modeling include? a. Diagrams b. Servers c. Devices d. Networks

a. Diagrams

Which conversion turns the old system off and the new system on at a specific date and time? a. Direct b. Parallel c. Pilot d. Phased

a. Direct

Which step involves the development of software while converting the models in the SDLC? a. Implementation b. Preliminary investigation c. Logical design d. Physical design

a. Implementation

Identify whether the following depicts logic modeling or physical modeling. Modifying the model design while still in the diagram phase to better fit the end-users' needs a. Logical modeling b. Physical modeling

a. Logical modeling

What is the correct order of steps in the System Development Life Cycle? a. Preliminary investigation, analysis, logical & physical design, implementation, maintenance b. Implementation, logical & physical design, maintenance c. Logical & physical design, preliminary investigation, analysis d. Maintenance, logical & physical design, implementation

a. Preliminary investigation, analysis, logical & physical design, implementation, maintenance

What occurs during system deployment? a. System conversion b. Implementation c. Modeling

a. System conversion

Does this factor need to be considered in the conversion process? Integration of the new system with other systems a. Yes b. No

a. Yes

Does this factor need to be considered in the conversion process? Reaction of the end-users to the new system a. Yes b. No

a. Yes

Does this factor need to be considered in the conversion process? Training end-users to use the new system a. Yes b. No

a. Yes

System requirements including user needs, security, and accessibility are first considered during which step in the SDLC? a. Preliminary investigation b. Analysis

b. Analysis

During implementation, which testing method uses actual data without assistance from developers? a. Alpha b. Beta c. User Acceptance

b. Beta

Alpha, beta, and user acceptance testing occurs during which step? a. Analysis b. Implementation c. Modeling

b. Implementation

Which step occurs after the analysis step and before the physical design step in the SDLC? a. Preliminary investigation b. Logical design c. Implementation d. Maintenance

b. Logical design

Identify whether the following depicts logic modeling or physical modeling. Using diagrams to describe to the end-users how the system will work a. Physical modeling b. Logical modeling

b. Logical modeling

Does this factor need to be considered in the conversion process? Integrity of the data imported back to the old system a. Yes b. No

b. No

Identify whether the following depicts logic modeling or physical modeling. Creating a model of the database design a. Logical modeling b. Physical modeling

b. Physical modeling

Identify whether the following depicts logic modeling or physical modeling. Modeling the hardware for the system a. Logical modeling b. Physical modeling

b. Physical modeling

Which step develops models of how the system will be physically laid out after charts and diagrams have been created and reviewed by the users? a. Logical modeling b. Physical modeling c. Implementation

b. Physical modeling

Which step models servers, desktops, laptops, mobile devices, and networks for implementation? a. Logical modeling b. Physical modeling c. Implementation

b. Physical modeling

Preventing buffer overflow is an example of which system requirement? a. User needs b. Security c. Accessibility

b. Security

Which conversion deploys only a subset of the new system first before deploying the whole new system at once? a. Direct b. Parallel c. Pilot d. Phased

d. Phased

Which of the following best describes the importance of logic modeling and physical modeling in the SDLC? a. Physical modeling provides end-users with diagrams of how the system will work so the developer can ensure it will meet their needs. b. Logic modeling demonstrates to end-users how the system will work and on which devices it will run. c. Logic modeling enables designers to determine if they have accurately identified all of the hardware requirements for a successful implementation. d. Physical modeling provides designers with the opportunity to alter the system design prior to implementation, which is more cost-effective.

d. Physical modeling provides designers with the opportunity to alter the system design prior to implementation, which is more cost-effective.

What type of system conversion is this? After months of development, the new patient information system is ready for deployment. The system will be implemented in one week at which time the old system will be disabled.

direct

Accessibility

ensures that the system is accessible to all users including paraplegics and the visually impaired

Security

ensures that the system is accessible to only authorized users

What type of system conversion is this? The new customer database has been running for the past month. To date, issues have been minimal. The sales team has not reported any differences in the output from the new system compared to the old system, and they have provided positive comments about the improved ease of use with the new system. The current plan is to disable the old system at the end of the month.

parallel

What type of system conversion is this? Human resources needed a better way to track employee information, including vacation time, sick leave, pay raises, project assignments, etc. The IT department developed a new tracking system and are initially implementing the project assignments portion of the new system. This aspect of the system upgrade will facilitate better tracking of time spent on projects. Once this aspect of the new system is in place and functioning without errors, the IT department will implement the paid time off portion of the system.

phased