Unit 1

Question 1

A ______ is an assembly of components that are connected together in an organised way

Answer 1

system

Question 2

In software development, a _______ is a set of activities/operations that takes one or more inputs, and produces one or more outputs

Answer 2

process

Question 3

A ______________ system includes software, hardware, other technical components, people, organisations, and other social structures

Answer 3

sociotechnical

Question 4

A system ________ separates the system to be studied from ‘everything else’.

Answer 4

boundary

Question 5

An area or field of knowledge characterised by a set of concepts and terminology is known as a ______

Answer 5

domain

Question 6

How do each of the following characteristics of software contribute to the introduction of errors:

1. Malleability
2. Complexity
3. Size

Answer 6

1. Every change introduces the possibility of new errors
2. The more complex a piece of software becomes, the higher the liklihood that a change will affect other parts of the software
3. The greater the number of lines of code in a piece of software, the greater the number of likely errors

Question 7

The follwing are essential characteristics of a good software system:

1. U_____
2. U_____
3. R_______
4. F_______
5. A________
6. A_________

Answer 7

1. Useful
2. Usable
3. Reliable
4. Flexible
5. Available
6. Affordable

Question 8

A good software system is one that meets users’ needs. Give two reasons why might a delivered software fail to do this?

Answer 8

• some needs are missed during requirements capture
• needs may change over time

Question 9

How might flexibility and affordability be connected?

Answer 9

Flexible software means that it takes less time to implement changes, therefore reducing labour costs.

Question 10

_______________ is a software quality factor that determines the effort required to understand, locate, and fix errors in a system

Answer 10

Maintainability

Question 11

An old software system that is still required because it meets some useful purpose to an organisation is called a ______ system.

Answer 11

legacy

Question 12

The process of splitting a problem into smaller parts until each one can be understood by an individual is known as _____________

Answer 12

decompostion

Question 13

A ______ is a program unit / component that is used exclusively through an external interface.

Answer 13

module

Question 14

______ programming is a a form of software development where a single person attemts to have in mind everything concerning a given problem and its eventual solution

Answer 14

Heroic

Question 15

__________ is a basic attribute of software. It allows the partition of a set of requirements into a number of intellectually manageable subsets

Answer 15

Modularity

Question 16

The _________ of a module is a description of the services it provides to its clients

Answer 16

interface

Question 17

The services that one module needs to use in order to work are called _______ ____________

Answer 17

context dependencies

Question 18

The process of describing the essential features of a problem and ignoring other details is called ___________

Answer 18

abstraction

Question 19

The measure of interconnection among modules in a software system is called ________

Answer 19

coupling

Question 20

________ is a way of describing how closely the activities within a single module are related to each other

Answer 20

Cohesion

Question 21

The software ____________ of a system is the set of structures needed to reason about the system.

These structures include software elements, relations between them, and the properties of those elements and relations.

Answer 21

architecture

Question 22

We use the term _________ to denote a unit of reuse or replacement in a software system. It could be a module or class.

Answer 22

component

Question 23

A _______ is a unit of reuse corresponding to a piece of functionality.

Answer 23

service