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 tape drive 1 and gets it.2. P1 requests tape drive 2 but it is blocked.3. P2 requests tape drive 1 but it is blocked. A. Pl requests drive 2. B. P2 requests drive 2 and gets it. C. P2 requests drive I but is blocked. D. Pl releases drive 1.

Answer 1

Answer:

b. P2 requests drive 2 and gets it.

Explanation:

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: P2 requests drive 2 and gets it.