Informatics System Analysis and Design (C798)

Correct Answer

d. Web-based contacts cost less than contacts involving analysts.

Explanation

A well-designed Web support site provides self-service options, reducing the need for human intervention in customer support. By offering FAQs, troubleshooting guides, and automated responses, Web-based contacts reduce the burden on live analysts, ultimately lowering support costs for the company.

Why other options are wrong

a. They allow service desks to provide free support for most issues.

While Web-based support can reduce costs, it does not necessarily mean support is free. Companies may still incur costs for maintaining and updating the website.

b. Web-based contacts cost more than contacts involving analysts.

Web-based support is generally more cost-effective than human analysts, as it minimizes labor costs and allows for automation.

c. The Web-based contacts cost about the same as contacts involving analysts.

Web-based support is typically cheaper than live support, as it reduces the need for staffing large teams of human support agents.

Correct Answer

c. Process modeling.

Explanation

Process modeling is the graphical representation of how data moves through a system, how it is processed, and how various system components interact. It helps analysts and developers understand and document system workflows, making it easier to identify inefficiencies and improve system design.

Why other options are wrong

a. Data modeling.

Data modeling focuses on defining and structuring data elements and their relationships within a database. It does not illustrate how data moves and is processed within a system.

b. Structure modeling.

Structure modeling represents the static aspects of a system, such as its components, objects, and their relationships, rather than the flow of data and processes.

d. Transition modeling.

Transition modeling typically deals with changes in states or conditions over time, such as state diagrams, rather than the flow of data and processes.

e. Logic modeling.

Logic modeling is concerned with the rules and conditions that drive decision-making in a system, rather than the movement and processing of data within the system.

Correct Answer

A. Agile teams have the empowerment to frequently respond to change and to learn on a project by changing the plan

Explanation

Agile methods are considered adaptive because they emphasize flexibility, allowing teams to adjust plans based on new insights, evolving customer needs, and ongoing learning. Agile methodologies prioritize iterative development, customer feedback, and team collaboration to ensure that the project adapts efficiently.

Why other options are wrong

B. The rate of development progress on an Agile project is constantly tracked to allow adaptation

Tracking progress is important, but adaptation in Agile is not solely based on progress tracking; it is driven by customer feedback and evolving requirements.

C. Project Managers are not needed in Agile methods because teams are self-organizing

While Agile teams are self-organizing, project managers or Scrum Masters often play facilitation roles. Agile does not eliminate leadership but redistributes responsibilities.

D. Workshops held at the beginning and the end of every iteration (timebox) allow the team to adapt the product specification

Workshops help refine requirements, but Agile adaptation occurs continuously, not just during scheduled workshops.

Correct Answer

c. Iterative Development

Explanation

Iterative development involves building a system incrementally, with each iteration providing an improved version based on feedback from previous iterations. This approach naturally results in multiple versions (e.g., Version 1, Version 2, etc.) as the system evolves over time. Each version incorporates refinements and enhancements, making iterative development the most suitable approach for version-based system development.

Why other options are wrong

a. System Prototyping

Prototyping focuses on quickly developing a working model to refine requirements and gather user feedback. However, the prototype is often discarded rather than evolving into multiple versions of a system.

b. Waterfall Development

The waterfall model follows a sequential approach where each phase (analysis, design, implementation, etc.) is completed before moving to the next. Once the system is developed, major changes typically require starting over rather than evolving through multiple versions.

d. System Prototyping

This is a duplicate of option (a) and follows the same reasoning—prototyping is used for refining system requirements but does not naturally lead to versioned system releases.

e. Parallel Development

Parallel development involves dividing a project into sub-projects that are developed simultaneously. While it speeds up development, it does not necessarily lead to versioned releases of the system.

Correct Answer

e. Rapid Application Development

Explanation

RAD stands for Rapid Application Development, a software development methodology that focuses on quick prototyping, iterative development, and user feedback. It aims to deliver high-quality applications in a shorter time frame by emphasizing collaboration and flexibility. RAD typically uses tools like graphical user interfaces (GUIs) and reusable components to speed up development.

Why other options are wrong

a. Real Application Development

This phrase does not represent the standard meaning of RAD. The methodology is centered on rapidity and efficiency, not just real-world applications.

b. Rapid Application Design

While design is a crucial part of RAD, the methodology focuses on the entire development cycle, not just design. It incorporates prototyping, iterative improvements, and user involvement.

c. Rapid Authentic Development

This phrase is not a recognized term in software development. "Authentic" does not describe the RAD methodology accurately.

d. Real Autonomous Development

RAD is not focused on autonomous development. Instead, it involves close collaboration between developers and users to refine software through iterative processes.

Correct Answer

B. Developing systems through collaboration among users, managers, and IT professionals

Explanation

The primary focus of application development in system design is to create effective, user-centric software solutions through collaboration among stakeholders. Users provide insights into business needs, managers ensure alignment with strategic goals, and IT professionals handle the technical aspects of development. This collaborative approach ensures that the final product meets functional requirements, enhances efficiency, and supports business processes.

Why other options are wrong

A. Creating software independently without user input

Ignoring user input often results in software that does not align with business needs or user expectations, leading to inefficiency and low adoption rates.

C. Implementing pre-existing software solutions without modifications

While some organizations use off-the-shelf software, application development often requires customization to meet unique business requirements. Simply implementing software without modifications does not qualify as application development.

D. Focusing solely on hardware upgrades to enhance system performance

While hardware upgrades can improve system performance, application development primarily deals with creating and optimizing software solutions, not just upgrading hardware.

Correct Answer

b. Processing.

Explanation

Processing refers to the transformation of raw data into meaningful, structured information that businesses can use for decision-making. This process includes data entry, calculations, categorization, and summarization.

Why other options are wrong

a. Mining.

Data mining refers to analyzing large datasets to uncover patterns and trends, but it does not inherently transform raw data into meaningful information.

c. Acquiring.

Acquiring data refers to collecting and gathering raw data, not transforming it into meaningful information.

d. Communicating.

Communicating refers to sharing or distributing information, but it does not involve the actual transformation of raw data into meaningful insights.

e. Extracting.

Extracting involves retrieving specific data from sources, but it does not necessarily convert the data into meaningful information.

Correct Answer

B. Return on investment

Explanation

Return on Investment (ROI) is a financial metric used to evaluate the profitability of an investment. It is calculated as:

$ROI=\frac{Total Benefits-Total Costs}{Total C\mathrm{os}ts}$

This formula helps businesses assess whether an investment is worthwhile by determining how much profit is gained relative to the costs incurred. A higher ROI indicates a more profitable investment.

Why other options are wrong

A. Cash flow

Cash flow refers to the movement of money into and out of a business over a specific period. It does not involve the comparison of total benefits and costs in the way ROI does.

C. Break-even point

The break-even point is the point at which total revenues equal total costs, meaning there is no profit or loss. It does not involve dividing net benefits by total costs.

D. Net present value

Net Present Value (NPV) measures the value of future cash flows discounted to present-day values. It helps determine whether an investment will be profitable over time. Ramya’s calculation does not involve discounting future cash flows.

E. Internal rate of return

The Internal Rate of Return (IRR) is the discount rate that makes the NPV of an investment equal to zero. It requires iterative calculations and is not the same as the ROI formula.

Correct Answer

B. Computer systems for orders, accounting, and payroll

Explanation

A business plan often discusses the necessary support systems to ensure efficient operations. This includes essential computer systems that manage orders, financial transactions, and employee payroll, as these are critical to business continuity and efficiency.

Why other options are wrong

A. Organizational structure

While organizational structure is an important part of a business plan, it is not typically categorized under the support system. Support systems focus on tools and resources that assist daily operations.

C. Counseling

Counseling is generally related to employee well-being or human resources rather than a core business support system discussed in a business plan.

D. Logistics

Logistics is a vital function in supply chain management, but it is considered an operational strategy rather than a general support system for a business plan.