3Review: quality assurance

Question 1

meaning of quality assurance

Answer 1

set of processes that occur throughout the dev + manufacturing of a product which ensure standards/requirements are met so that product is high quality

Question 2

software quality meaning

Answer 2

the extent to which desirable features are incorporated in software so that it can reliably and efficiently continue to meet the needs of users

Question 3

quality assurance for manufactured products

Answer 3

largely about monitoring process to ensure parts continue to meet tolerances + standards over time

Question 4

why is software different from manufactured products

Answer 4

in software: the design + dev process determines quality

Question 5

SQA meaning + aim

Answer 5

software quality assurance: aims to provide users with confidence in the integrity of software, ensures software will function reliably as intended w/out errors + vulnerabilities

Question 6

what do software vulnerabilities entail

Answer 6

intentional or unintentional faults such as:
- security flaws
- inclusion of untested code
- bugs which may result in loss of data

Question 7

what is the criteria of software quality dependant on

Answer 7

dependant on the nature + size of the project

Question 8

basic criteria list for software quality

Answer 8

• efficiency
• integrity
• reliability
• usability
• accuracy
• maintainability
• testability
• reusability

Question 9

efficiency meaning

Answer 9

software should perform its functions by making the best possible use of computer’s resources

Question 10

efficiency considerations

Answer 10

• good coding techniques + structure
• language, OS + CPU features(multi-tasking, distributed/parallel processing)
• judged with range of system configs
• code that accesses networks should be examined + optimised

Question 11

integrity meaning

Answer 11

the correctness of data in system

Question 12

data integrity considerations

Answer 12

• will reduce over time, dependent data outdated
• system should check if data = current(mobile, address)
• judged on security mechanisms + data validation

Question 13

reliability meaning

Answer 13

the ability of a system to continue to perform its functions over time

Question 14

reliability considerations

Answer 14

• time required to recover from a failure
• ability of the system to be updated to reflect changes in requirements or changes in environment in which software operates

Question 15

usability meaning

Answer 15

the ability of the software to be learnt + used by users

Question 16

usability considerations

Answer 16

• UI = crucial
• other considerations include other user interface issues, such as: warnings/errors for significant data changes, shortcut keys

Question 17

accuracy meaning

Answer 17

when the software performs its functions correctly and according to its specifications

Question 18

accuracy considerations

Answer 18

can only be assured when code is thoroughly tested
- algorithms + all paths + inputs assessed
- well commented for future upgrades

Question 19

maintainability meaning

Answer 19

measure of ease with which changes can be made

Question 20

maintainability considerations

Answer 20

source code should be well-documented, modular, with retained test data sets/routines

Question 21

main reasons why code is routinely altered

Answer 21

• correct errors
• implement new functionality
• improve performance

Question 22

testability meaning

Answer 22

the ability to test all aspects of the software, helps all other quality assurance factors

Question 23

testability considerations

Answer 23

testing: everything should be tested; individual subroutines, system tested, client performs acceptance testing

Question 24

reusability meaning

Answer 24

the ability to reuse code in other related systems