Fill in the missing step in the following deadlock situation.Two users from the local board of education are each running a program (P1 and P2),and both programs will eventually need two DVD drives to copy files from one disc to another.Only two DVD-R drives are available and they're allocated on an "as requested" basis.Soon the following sequence transpires:
1)P1 requests drive 1 and gets it.
2)____
3)P1 requests drive 2 but is blocked.
4)P2 requests drive 1 but is blocked.
A) P1 requests drive 2.
B) P2 requests drive 2 and gets it.
C) P2 requests drive 1 but is blocked.
D) P1 releases drive 1.

Question

Fill in the missing step in the following deadlock situation.Two users from the local board of education are each running a program (P1 and P2),and both programs will eventually need two DVD drives to copy files from one disc to another.Only two DVD-R drives are available and they're allocated on an "as requested" basis.Soon the following sequence transpires: 
1)P1 requests drive 1 and gets it.
2)____
3)P1 requests drive 2 but is blocked.
4)P2 requests drive 1 but is blocked.
A) P1 requests drive 2.
B) P2 requests drive 2 and gets it.
C) P2 requests drive 1 but is blocked.
D) P1 releases drive 1.

Quizplus · Accepted Answer

For a deadlock to occur, each process must hold a resource and wait for another, creating a cycle of dependencies. In this scenario, after P1 secures drive 1, P2 must secure drive 2, leading to a situation where each process holds one drive and requests the other, causing a deadlock.

Fill in the Missing Step in the Following Deadlock Situation