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ISDS 406 BARLOW Final Exam: Questions & Solutions
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ISDS 406 BARLOW Final Exam: Questions & Solutions
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ISDS 406 BARLOW Final Exam: Questions & SolutionsWhat are the steps of the design phase, and what is the final deliverable of the
design phase? Right Ans - 1. Determine system acquisition strategy (make,
buy, or outsource).
2. Determine the technical architecture for the system.
3. Address security concerns and globalization issues.
4. Make hardware and software selections.
5. Determine the way that users will interact with the system (interface,
inputs, and outputs).
6. Design the programs for the underlying processes.
7. Design the way data will be stored
- Create final deliverable - the system specification
What are the three acquisition strategies? Under what circumstances would
you choose each one? Right Ans - 1. Custom development (build from
scratch) in-house
2. Purchase software package (and possibly customize it)
- Install on our own computers, or
- Obtain access from a software provider (SaaS)
3. Outsource development to third party, who might
- Build system from scratch for us, or
- Purchase software for us, customize and install it
What is an RFP? RFI? RFQ? What are their purposes? Right Ans - Request
for Proposals (RFP)
- Solicits proposals from vendor, developer, or service provider
- Explains the system to be built and criteria for selecting among applicants
Request for Information (RFI) - a shorter and less detailed version
,Request for Quote (RFQ) - use when you just need a price
Alternative matrix: what is listed across the top row and what is listed down
the first column? How is the right alternative selected in a matrix? (hint: the
one with the highest weighted score) Right Ans -
Definition of architecture design Right Ans - Plans for how the system will
be distributed across computers and what hardware and software will be
used for each computer.
Objective of architecture design Right Ans - Assign the software
components of the information system to the hardware devices of the system
in the most advantageous way.
What are two major architectural components? Right Ans - 1. Hardware
2. Software
What are the four basic functions of software? Right Ans - 1. Data storage.
2. Data access logic: the processing required to access stored data.
3. Application logic: the logic documented in the DFDs, use cases, and
functional requirements.
4. Presentation logic: the display of information to the user and the acceptance
of the user's commands.
What are the three primary hardware components? Right Ans - 1. Client
computers: Input-output devices employed by users (e.g., PCs, laptops,
handheld and mobile devices, smartphones)
2. Servers: Larger multi-user computers used to store software and data.
3. Network: Connects the computers.
In a client-server architecture, which of the four software types usually
resides on the client, which usually resides on a server, and which varies
depending on the architecture chosen? Right Ans - - Client-server
, architectures balance the processing between client devices and one or more
server devices.
- Generally, clients are responsible for the presentation logic,
and
- the server(s) are responsible for the data access logic and data storage.
- Application logic location varies depending on the C-S configuration chosen.
In a two-tiered client-server architecture, what is the difference between a
thick and thin client? Right Ans - - Thick client: most of application logic on
the client side (shown here)
- Thin client -- little application logic on the client side; most shifted to server
side
In mobile architecture (where the client is a mobile device), what is a rich
client and what is a thin Web-based client? Right Ans - - Rich client:
involves processing on the mobile device using its resources. Presentation
logic, application logic, and data access logic on the client side.
- Thin Web-based client: application and data access logic on the server side;
always connected to server.
What technologies are used to create cross-platform apps (hint: Web-based)?
Right Ans - - Cross-platform frameworks: develop in web-based technologies
and use framework to deploy to multiple devices.
- Cross-platform apps often use HTML5/Javascript with an overlaying
interface so that it looks different from the browser
What is cloud computing, and can you name an example of cloud computing?
Right Ans - - Cloud computing: everything from computing power to
computing infrastructure, applications, business processes to personal
collaboration can be delivered as a service wherever and whenever needed.
- The "cloud" can be defined as the set of hardware, networks, storage,
devices, and interfaces that combine to deliver aspects of computing as a
service.
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