Structured Systems Analysis and Design
(ICT2621) - Chapter 7 UPDATED ACTUAL
Questions and CORRECT Answers
Software as a Service (SaaS) - CORRECT ANSWER - Software deployment model in
which an application is hosted as a service provided to customers over the Internet
Web 2.0 - CORRECT ANSWER - A second generation of the web that enables people to
collaborate, interact and share informatino much more effectively
Cloud Computing - CORRECT ANSWER - A model for enabling ubiquitous, convenient,
on-demand network access to a shared pool of configurable computing resources that can be
rapidly provisioned and released with minimal management effort or service provider interaction
Outsourcing - CORRECT ANSWER - The transfer of information systems development,
operation or maintenance to an outside firm that provides these services, for a fee, on a
temporary or long-term basis.
Reasons for in house development: - CORRECT ANSWER - 1. Satisfy unique business
requirements
2. Minimize changes in business procedures and policies
3. Meet constraints of existing systems & technology
4. Develop internal resources and capabilities
5. Satisfy unique security requirements
Reasons for purchasing a software package - CORRECT ANSWER - 1. Lower costs
2. Requires less time to implement
3. Proven reliability and performance benchmarks
4. Requires less technical development staff
5. Future upgrades provided by the vendor
, 6. Obtain input from other companies
Payback Analysis - CORRECT ANSWER - To determine how long it takes an information
system to pay for itself through reduced costs and increased benefits
Return on Investment (ROI) - CORRECT ANSWER - A percentage rate that compares the
total net benefits (the return) received from a project to the total costs (the investment) of the
project
Net Present Value (NPV) - CORRECT ANSWER - The total value of the benefits minus
the total value of the costs, with both costs and benefits adjusted to reflect the point in time at
which they occur
Traditional Development - CORRECT ANSWER - - Compatibility issues influence
systems design
- Systems are designed to run on local and wide area company networks
- Systems often utilize Internet links and resources, but web-based features are considered to be
enhancements rather than core elements
- Development is either in-house development, purchase of a software package with possible
modification or use of outside consultants
- Scalability can be effected by network limitations and constraints
-Many applications require substantial desktop computing power and resources
- Security issues are usually less complex
Web-Based Development - CORRECT ANSWER - - Systems are developed and delivered
in an Internet-based framework such as .NET
- Internet-based development treats the web as the platform and not just the communication
channel
- Web-based systems are easily scalable and can run on multiple hardware environments
- Large firms tend to deploy web based systems as enterprise wide software solutions
- Software application is less dependent on desktop power and resources
(ICT2621) - Chapter 7 UPDATED ACTUAL
Questions and CORRECT Answers
Software as a Service (SaaS) - CORRECT ANSWER - Software deployment model in
which an application is hosted as a service provided to customers over the Internet
Web 2.0 - CORRECT ANSWER - A second generation of the web that enables people to
collaborate, interact and share informatino much more effectively
Cloud Computing - CORRECT ANSWER - A model for enabling ubiquitous, convenient,
on-demand network access to a shared pool of configurable computing resources that can be
rapidly provisioned and released with minimal management effort or service provider interaction
Outsourcing - CORRECT ANSWER - The transfer of information systems development,
operation or maintenance to an outside firm that provides these services, for a fee, on a
temporary or long-term basis.
Reasons for in house development: - CORRECT ANSWER - 1. Satisfy unique business
requirements
2. Minimize changes in business procedures and policies
3. Meet constraints of existing systems & technology
4. Develop internal resources and capabilities
5. Satisfy unique security requirements
Reasons for purchasing a software package - CORRECT ANSWER - 1. Lower costs
2. Requires less time to implement
3. Proven reliability and performance benchmarks
4. Requires less technical development staff
5. Future upgrades provided by the vendor
, 6. Obtain input from other companies
Payback Analysis - CORRECT ANSWER - To determine how long it takes an information
system to pay for itself through reduced costs and increased benefits
Return on Investment (ROI) - CORRECT ANSWER - A percentage rate that compares the
total net benefits (the return) received from a project to the total costs (the investment) of the
project
Net Present Value (NPV) - CORRECT ANSWER - The total value of the benefits minus
the total value of the costs, with both costs and benefits adjusted to reflect the point in time at
which they occur
Traditional Development - CORRECT ANSWER - - Compatibility issues influence
systems design
- Systems are designed to run on local and wide area company networks
- Systems often utilize Internet links and resources, but web-based features are considered to be
enhancements rather than core elements
- Development is either in-house development, purchase of a software package with possible
modification or use of outside consultants
- Scalability can be effected by network limitations and constraints
-Many applications require substantial desktop computing power and resources
- Security issues are usually less complex
Web-Based Development - CORRECT ANSWER - - Systems are developed and delivered
in an Internet-based framework such as .NET
- Internet-based development treats the web as the platform and not just the communication
channel
- Web-based systems are easily scalable and can run on multiple hardware environments
- Large firms tend to deploy web based systems as enterprise wide software solutions
- Software application is less dependent on desktop power and resources
