Question

Distinguish between ComboBox and ListBox. When would you prefer using them over Radiobutton and Checkbox?

Answer 1

Differences between ComboBox and ListBox are as follows :

ComboBox	ListBox
It occupies less space but show only one value for visbility.	It occupies more space but shows more than one value.
Multiple select is not possible	Multiple select is possible.

When you need to select multiple option then you would prefer using ListBox over CheckBox and when you need to select only one option then you would prefer using ComboBox over Radio Button.