What statement regarding role-based access control is accurate?

Kyle wants to access his school’s home page. how can he do this?

Idon understand these and need some ! ?

Let r be a robotic arm with a fixed base and seven links. the last joint of r is a prismatic joint, the other ones are revolute joints. give a set of parameters that determines a placement of r. what is the dimension of the configuration space resulting from your choice of parameters?