Lecture

Question 1

Quality

Answer 1

Refers to the degree a software product meets specified requirements

Question 2

Software requirements

Answer 2

Functional: what does the system do

NonFunctional: how the system performs is functions
(unibility,performance, reliability, security)

Question 3

Quality metrics

Answer 3

Quality metrics provide a basis for consistent unbiased evaluation and support continuous improvement

Question 4

Why early definition of quality

Answer 4

Avoid cost overuns and delays

Aligns stakeholder expectations

Facilitates objective judgement regarding Quality Achievement

Question 5

How to define Quality in a project

Answer 5

Start with requirements
use measurable metrics to track quality

e.g. performance response time
or defect limits less than 10 defects per line of code
or user satisfactory score

Question 6

What steps in stepwise are quality related:

Answer 6

1234 and 8

Question 7

Importance of software quality management

Answer 7

The critical role is growing rapidly
the size and complexity of software is increasing
software products are increasigly including third part components or using online services

Risks: failers secuity vulnerabilities and integration challenges

Question 8

Product quality management

Answer 8

Quality control, evaluation of the final product against requirements

Goal is to deliver a product that meets defined Quality requirements

Question 9

Process quality management

Answer 9

Quality Assurance, evaluation of the process behind product development

goal” build quality into the product from the start, minimising the chances of defects later”

Question 10

Process quality management

Answer 10

the purpose is to ensure that the project conforms to the mutually agreed requirements, specifications and expectations:

CMMI,
Six Sigma
Agile and DevOps perspectives:

Agile quality management is Agile testing Quadrants

DevOps Quality management is Continuous integration/ continuous delivery

Question 11

External Quality Characteristics

Answer 11

External Characteristcs reflect users view of the software

Question 12

Internal Quality characteristics

Answer 12

Internal Characteristics reflects the developers viewpoint, e.g.
how well…
structured, modular or documented it is

Question 13

Directly measured characterisitics

Answer 13

Directly measured characteristics map measurements to requirements, e.g.
mean time between failures must be less than a given upper bound.

Question 14

Indirectly measured characteristics

Answer 14

indirectly measured characteristics are ascertained from measurements. number of user inquiries received by help desks is an indirect indicator of the software usability

Question 15

What are direct and indirect measured quality characteristics used for?

Answer 15

meet user experience and code is of high quality for user

Question 16

What is Quality management Plan

Answer 16

Outlines how quality will be managed throughout the project and ensure that the plan covers all quality processes and activities.

Question 17

Quality Plan: what is Quality Objectives

Answer 17

A shared view with project team and stakeholders

the purpose of this section is to align team and stakeholders on what we want to achieve, set expectations

Question 18

Quality Plan: what is Quality Process

Answer 18

a framework that will be used to ensure quality

Auditing
functionality review
coding review etc

Question 19

Quality Plan: what is Quality Characteristics

Answer 19

Needs to be specified

specific attributes of software that will define software

functional and non-functional requirements needs to be specified

Question 20

Quality Plan: what is Quality Metrics

Answer 20

needs to be defined to measure quality characteristics

able to measure to see if we have
achieved our goals.

measures quality characteristics

e.g.defects per 1000 SLOC

Question 21

Quality Plan: what is Quality Roles and responsibilities

Answer 21

team members accountable for each step/taskin the quality management plan

Clearly assign team members for each management task

ensure accountability and promote collaboration for team to work together

Question 22

what is Quality specification

Answer 22

more focused more detailed for quality of product

Question 23

What does the Quality specification include?

Answer 23

-Definition description
-scale
-test
-minimally excepted value
-target range

Question 24

Quality specification: definition and description

Answer 24

of the Quality Characteristic.

Detailing the characteristic, more throurough description and detail.

Specifying what is happening e.g. speed

Question 25

Quality specification: Scale

Answer 25

the unit of measurement,

what we will be measuring during the Activity

Question 26

Quality specification: Test

Answer 26

the practical test can be used to assess the extent to which the quality characteristic is present in the software product

Question 27

Quality specification: Minimally accepted value

Answer 27

the worst value that would be acceptable and below this, would have to be rejected

measuring response time, metric must not exceed 5 seconds

or search quesry on ecommerce platform, degrades user experience.

Question 28

Quality specification: Target Range

Answer 28

the range of values within which the quality measurement is planned to lie

set a target range, where the quality metric should fall,

Question 29

Measurement of quality characteristic: Availability

Answer 29

ther percentage of a pre specified time interval that the system is operational

Question 30

Measurement of quality characteristic: failure rate

Answer 30

the probability that a transaction e.g. loading a web age… will fail

Question 31

Measurement of quality characteristic: Mean time between failures (MTBF)

Answer 31

The average time that a system that operated between failures calculated as the total operational time, devided by the number of failures that occurred during that period