A 1.3.5 Worksheet Answers
a) P1 → R1 is “holds”; P1 → R2 is “waits for”; P2 → R2 is “holds”; P2 → R1 is “waits for”. b) Neither can continue because each process holds a resource the other needs and will not release it until it obtains the resource it is waiting for, so both wait forever. 1–B, 2–D, 3–A, 4–C. Formative, not marked. Accept any sound mechanism in each row. The middle column must give a reason, not just “no”. Teacher note:...