L15: Agile UX: Use Studies, Stories and Senarios

Question 1

Describe the difference between functional and non-functional requirements.

Answer 1

​The difference between functional and non-functional requirements is a functional requirements communicate how it functions but it doesn’t dictate how to create it from a design. A non-functional requirements are constraints solution must satisfy for example usability requirements, look-and-feel requirements, performance requirements, etc.

Question 2

Which of the following is NOT true of constraints?

a. They are also referred to as non-functional requirements
b. They can affect all or many user stories
c. They should be treated like any other user story

Answer 2

c. They should be treated like any other user story

Question 3

Requirements should be:

Answer 3

Necessary: What is the worst thing that could happen if this requirement were not included?
Verifiable: What are the criteria for acceptance?
Attainable: Must be affordable in cost, time & practicality
Clear: Express a single thought, be concise & simple

Question 4

Software requirements should address?

Answer 4

Functionality: What is the software supposed to do?
External Interfaces: How does the software interact with people, the system’s hardware, other hardware, and other software?
Performance: What is the speed, availability, response time, recovery time of various software functions.
Attributes: What are the portability, correctness, maintainability security, etc. considerations?
Design constraints imposed on an implementation.

Question 5

Which of the following use case level is most relevant to interaction design…?

a. Cloud level
b. Clam level
c. Sea level

Answer 5

c. Sea Level

Question 6

What is a Use case?

Answer 6

Describes interaction between the system (or component) and something external. The external entity can be anything: An organization, a user or a peripheral device.

Question 7

High Summary = ____ Level

Answer 7

Cloud Level

Question 8

Summary = ____ level

Answer 8

Kite Level

Question 9

User Goal = _____ Level

Answer 9

Sea

Question 10

Sub-function = _____ Level

Answer 10

Fish

Question 11

Too Low = ____ Level

Answer 11

Clam

Question 12

What do scenarios need?

Answer 12

Clarity, brevity, and precision. Short paragraphs focused on a single subject

Question 13

Which of the following is NOT true of the differences between sketches and wireframes?

a. Wireframes are seen by users as being more malleable than sketches
b. Sketches provide less detail than wireframes
c. Wireframes are retained, sketches discarded

Answer 13

a. Wireframes are seen by users as being more malleable than sketches

Question 14

How do sketches help?

Answer 14

It helps fill the gap between abstract requirements and concrete solutions. It’s quick, malleable, tentative, visualization an important part of design.

Question 15

Sketches or wireframes are usually included with _____ ____ as the specification of a user story (or use case)

Answer 15

design maps

Question 16

Sketches or wireframes can be replaced by ___-_____ designs if pixel-perfect screens are needed by the development team.

Answer 16

high fidelity