chapter 1

Question 1

What is software requirement?

Answer 1

Its a complete description of what a system will do, its features and its functionalities WITHOUT explaining how it will do it.

Question 2

What is requirement?

Answer 2

is a condition that all stakeholders have agreed, must be met; in order for a user to achieve an objective or solve a problem.

Question 3

_______ is a short, concise & unambiguous piece of information?

Answer 3

requirement

Question 4

what is the difference between solution-neutral & solution-specific requirement?

Answer 4

• solution neutral -> statements propose the problem but leave the solution open.
• solution specific -> statements propose a solution as well as statement of the problem.

Question 5

What are the 4 sources of requirment?

Answer 5

• stakeholders
• existing system
• application domain
• documents

Question 6

list the 2 types of requirements and briefly explain them.

Answer 6

1. Functional requirements - explain functions of a system, what the system does and its behavior.
2. Non-functional requirements - explain properties of a system and how it works.

Question 7

give examples of functional requirements

Answer 7

• system input & output
• what data system stores
• what computation system performs
• system sends email when a user signs in
• search feature allows users to browse products

Question 8

what are the other names of NFRs.

Answer 8

• quality requirements
• extra functional reqs
• quality of service reqs

Question 9

____________ req can be measured & also verified?

Answer 9

NFR

Question 10

what are the 3 main examples of NFRs?

Answer 10

1. performance constraints - recovery from failure, response time, capacity, reliability ….
2. design constraints - technology (dbs, framework), platform (OS, device)
3. commercial constraints - development methodology, cost, delivery

-> performance, cost, security, logging, storage

Question 11

what are the 4 requirement breakdowns?

Answer 11

1. user reqs
2. system reqs
3. app domain reqs
4. problem domain reqs

Question 12

app domain reqs can be driven from ___ , ___. & ____?

Answer 12

• industrial sector
• the company
• gov’t laws & regulations

Question 13

_____ is an objective that guides req eng process?

Answer 13

Goal

Question 14

Given a system goal, draw up a NFR for it.
System Goal - a system should be easy to use by experienced controllers & produce minimal errors.

Answer 14

• experienced controllers should be able to use system after 3 hours of training
• average daily errors by experienced controllers should not exceed 2.

Question 15

An application domain requirement could be _____?

Answer 15

• a new FR
• a constraint on an existing req
• a req defining a specific computation

Question 16

________ addresses part of the world in which a problem exists?

Answer 16

problem domain