$1.$ Define the following terms $[20$ Marks$]$:

$-$ Updating Schedule

$-$ A recovery schedules

$-$ Earned value concept

$-$ Explain briefly, how the IT can be used in project control? Provide examples

$2.$ Explain briefly, why the earned value technique is more reliable in forecasting project cost and not in protect time. $[10$ Marks$]$