These self-assessment problems accompany the mini course On Datums and Network Design.

## Problem 1

In Lab 5:

a) If you were to remove only the distance measurements from the adjustment, would you have a datum problem? If so, what is / are the defect(s)?

b) If you were to remove only the known coordinates of point 1, would you have a datum problem? If so, what is / are the defect(s)?

c) If you were to remove both known points (1 and 2), would you have a datum problem? If so, what is / are the defect(s)?

d) If you were to remove both known points (1 and 2), could you still solve for the misalignment error by itself?

## Problem 2

Which of following is more likely to have been solved by internal constraints and (vs. external constraints)? Why?

a)

b)

## Problem 3

If the following correction vectors correspond to different adjustment solutions of a two-station height network, which is a solution by inner constraints and why?

a)

a)