Work through the concepts, then test yourself with the knowledge check.
The four necessary conditions for deadlock (Coffman conditions) are:
Starvation and livelock are separate from deadlock. The four deadlock conditions are: mutual exclusion, hold-and-wait, no preemption, circular wait.
Each condition is necessary but not sufficient. Deadlock requires all four simultaneously.
All four Coffman conditions must hold: mutual exclusion, hold-and-wait, no preemption, AND circular wait.