1.2.5 - Describe methods of obtaining requirements from stakeholders.

Question 1

Give 3 advantages of surveys.

Answer 1

1) A large amount of data from a large group can be gathered.
2) Takes little time to analyse (if done electronically).
3) They’re simple.

Question 2

Give 4 disadvantages of surveys.

Answer 2

1) It’s hard to ask the “right question”.
2) Information gathered is limited by questionnaire.
3) Can be biased.
4) Quality of responses not ensured.

Question 3

Give 2 advantages of interviews.

Answer 3

1) They allow a lot of very detailed information to be gathered.
2) People can be asked about what they don’t like about the system.

Question 4

Give a disadvantage of interviews.

Answer 4

They take a long time.

Question 5

Give an advantage of direct observation.

Answer 5

First-hand, unbiased information can be gathered.

Question 6

Give a disadvantage of direct observation.

Answer 6

Often people might not work the way they normally do when being observed.

Question 7

Describe collecting documents as a method of obtaining information about a system.

Answer 7

Collecting documents involves looking in the documents currently being used in the system to try to find out how it works.

Question 8

Give 2 advantages of collecting documents.

Answer 8

1) Detailed information about the present system can be gathered.
2) It can be seen where the old system has problems.

Question 9

Give 2 disadvantages of collecting documents.

Answer 9

1) Time consuming.
2) Just looking at the forms/outputs may be confusing.