1. Introduction and overview

Question 1

Requirement

Answer 1

1. a need perceived by a stakeholder
2. a capability or property that a system shall have
3. a documented representation of a need, capability or property

Question 2

Requirements specification

Answer 2

a systematically represented collection of requirements that satisfies given criteria

Question 3

Kinds of requirements

Answer 3

1. functional requirements
2. quality requirements
3. constraints

Question 4

Functional requirements

Answer 4

concern a result or behavior that shell be provided by a function of a system.

Question 5

Quality requirements

Answer 5

pertain to quality concerns that are not covered by functional requirements

Question 6

Constraints

Answer 6

requirements that limit the solution space beyond what is necessary to meet the given functional requirements and quality requirements

Question 7

Requirements Engineering

Answer 7

The systematic and disciplined approach to the specification and management of requirements with the goal of understanding the stakeholders’ desires and needs and minimising the risk of delivering a system that does not meet these desires and needs

Question 8

Stakeholder

Answer 8

A person or organisation who influences a system’s requirements or who is impacted by the system

NB direct or indirect

Question 9

System

Answer 9

A coherent, delimit able set of elements that by coordinated action achieve some purpose

Question 10

Value of adequate RE

Answer 10

1. RE minimises the risk of failure or costly modifications in later development stages.
2. RE eases the intellectual complexity involved in understanding the problem
3. RE provides a proper basis for estimating development effort and cost
4. RE is a prerequisite for testing the system properly

Question 11

Symptoms of inadequate RE

Answer 11

1. Dev team rushing into implementation due to schedule pressure
2. Communication problems between parties involved between stakeholders and system developers and among the stakeholders themselves
3. The assumption that the requirements are self evident
4. People conducting RE activities without having adequate education and skills

Question 12

Role of Requirements Engineer

Answer 12

1. Elicit, document, validate and / or manage requirements as part of their duties
2. Have indent knowledge of RE, which enables them to define RE processes, select appropriate RE practices and apply these properly
3. Able to bridge the gap between the problem and potential solution

Question 13

Major tasks in RE

Answer 13

1. elicitation, requirements analysis and conflict resolution
2. documtnatation
3. validation
4. management

Question 14

Different forms of requirements

Answer 14

1. System
2. Stakeholder
3. User
4. Domain
5. Business

Question 15

System requirements

Answer 15

describe how a system shall work and behave - as observed at the interface between the system and its environment - so that the system satisfies its stakeholders’ desires and needs.

Question 16

Stakeholder requirements

Answer 16

expresses stakeholders’ desires and needs that shall be satisfied by building a system, seen from the stakeholders’ perspective

Question 17

User requirements

Answer 17

subset of stakeholder requirements. cover the desires and needs of the users of a system

Question 18

Domain requirements

Answer 18

specify required domain properties of a socio techincal or cyber-physical system

Question 19

Business requirements

Answer 19

focus on business goals, objectives and needs of an organization that shall be achieved by employing a system