Question $4($Marks: $25)$

Answer all questions below.

Q$\mathrm{.}4\mathrm{.}1$ Error handling is an important user interface design concept. Consider the error

message below:

$$The customer information entered is not valid. Try again$$

What is wrong with this error message? Rewrite it so that it conforms to user

interface design standards.

$(5)$

Q$\mathrm{.}4\mathrm{.}2$ List five reasons that cause IT projects to fail. $(5)$

Q$\mathrm{.}4\mathrm{.}3$ Differentiate between the following concepts: Client, User, Steering Committee $(6)$

Q$\mathrm{.}4\mathrm{.}4$ Discuss the various types of software tests.