| (a) |
What is system performance evaluation?
|
[1] |
| (b) |
System measurement is one stage in the process of system evaluation. (i) Outline the main activities to be performed during this stage. [2 marks] (ii) Explain the difference between hardware
and software monitors. (iii) Give one advantage of using each type of monitor to record the activity of a device. [2 marks] (iv) Explain the difference between sample and trace modes of monitoring. [1 mark]
|
[6] |
| (c) |
Outline the four activities that may be carried out during software maintenance.
|
[4] |
| (d) |
The diagram below shows the failure curve for software.
(i) Explain how the idealized curve is derived. [2 marks] (ii) Why does the actual curve differ from the idealized curve? [2 marks] |
[4] |
