basically ... they want an answer
they want to see what you know ...
how you convey that knowledge
how you organise the info .... intro, body summary
(if it's a training type pres ... the intro is the objectives)
starts ... today we will examine xxxxx and how that affects yyyyy
the main source of information is derived from ....which can be used for the following ....
my personal contribution to the team, group , community is a detailed hands on knowledge backed by x years experience. In the recent past I have solved the following ....
I achieved this by......