Lecture 9

Question 1

Usability (U)

Answer 1

The extent to which a product can be used by specific users to achieve specified goals with effectiveness, efficiency, and satisfaction, within a specified context of use.

Question 2

[U] Attributes/Standards

Answer 2

S.M.E.L.E.

• Satisfaction
• Memorability
• Efficiency
• Learnability
• Errors

Question 3

[U] Testing

Answer 3

Evaluating a product by testing it with representative users. Observers take notes, watch, and listen, while users try to complete a typical task.

Question 4

User Experience (UX)

Answer 4

Every aspect of a users interaction with a product, service, or company, that makes up the user’s perception as a whole.

Question 5

[UX] Design

Answer 5

Concerned with all the elements that make up the interface (layout, visual design, text, brand, sound, etc). UX Design coordinates these elements to achieve best possible interaction by users.

Question 6

[UX Design] Best Practices

Answer 6

D.C.C.T.P.CT.S.

• DEFAULTS
• CONSISTENCY
• COMMUNICATION
• TYPOGRAPHY
• PURPOSEFUL page layout
• COLOR TEXTURE
• SIMPLICITY

Question 7

GUI Testing

Answer 7

Testing a products GUI to ensure it meets specifications

Question 8

[GUI Testing] Challenges

Answer 8

• GUI can be up to 60% of an app’s code
• Large space of possibilities
• Test case decisions (what combo of user’s actions should we try?)
• Regression Testing (can earlier test cases be reused?)
• Coverage (how much testing is enough?)

Question 9

[GUI Testing] Approaches

Answer 9

• Manual: testers manually check graphical screens to ensure requirement conformity
• Record and Playback
• Model

Question 10

Mobile User Experience (Mobile UX)

Answer 10

UX for mobile devices/applications.

Question 11

[Mobile UX] Users

Answer 11

• users will not download apps with low ratings
• users expect < 2 sec loading time
• users will abandon apps that don’t work the first time

Question 12

[Mobile UX] Design Considerations

Answer 12

Design for One Web

• Thematic Consistency across devices
• Capabilities of devices should be exploited to enhance UX
• Deficiencies of devices should be worked around
• Testing should be completed with emulators and actual devices

Rely on web standards

Avoid known hazards

Be cautious of device limitations

Optimize Navigation

Check graphics and colors

Keep it small

Use the network sparingly

Help and guide user input

Think of users ‘on-the-go’

Question 13

[Mobile UX] Testing Challenges

Answer 13

• multitude of mobile devices
• device fragmentation and various OSs
• different mobile app types (native, web hybrid)
• numerous test interfaces

Question 14

[Mobile UX] Security Issues

Answer 14

C.I.A.M.A.D.

• Confidentiality (data privacy)
• Integrity of mobile app data
• Authentication of app user
• Malware attacks
• Authorization/limitation of user privileges
• Device loss

Question 15

[Mobile UX] Testing Strategy

Answer 15

F.L.P. M.I. U.I. C.S.

• Functional (app meets requirements)
• Laboratory (network carrier sims wireless network, tests voice/data useage)
• Performance (low battery. memory, concurrency)
• Memory leakage (app consumption of inc amount of memory over time slows performance)
• Interrupt (calls, notifications, battery removal, cable insertion, network outage/recovery, media player on/off, device power cycle)
• Usability (same across different devices)
• Installation (seamless/no frustration)
• Certification (adherence to device/mobile platform guidelines/certificate of compliance)
• Security