The first exercise developed a clean relaxed position shift, this one takes advantage of that to get you comfortably changing position up and down the neck. In addition you'll build some muscle memory that will help you find the note with your left hand simply by referencing it proprioceptively. That is you're motor and sensory systems will remember the distances between notes so that you are less reliant on looking down at the fretboard.
So where the previous exercise used only two notes these will use scales/modes, firstly the major scale and secondly the mixolydian mode. The first one plays E major on the first string:
As well as learning the distances between notes in terms of note names you're learning how far your hand needs to move to get a change in pitch. You are developing a connection between your proprioceptive mechanisms and what you hear. This exercise builds on this aural relationship by contrasting the major sound with a mixolydian.