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3. An operating system uses the Banker's algorithm for deadlock avoidance when managing the allocation of four resource types A, B, C and D to four processes P0, P1, P2 and P3. The table given below presents the current system state at time T0. \begin{tabular}{|c|cccc|cccc|} \hline P. & \multicolumn{4}{c|}{Allocation} & \multicolumn{4}{c|}{Max} \\ No & A & B & C & D & A & B & C & D \\ \hline P0 & 3 & 0 & 2 & 4 & 5 & 1 & 2 & 7 \\ P1 & 2 & 2 & 2 & 0 & 3 & 2 & 2 & 2 \\ P2 & 3 & 2 & 2 & 2 & 3 & 3 & 2 & 2 \\ P3 & 0 & 5 & 2 & 0 & 4 & 6 & 2 & 2 \\ \hline \end{tabular} There are 2 units of type A, 2 units of type B, 3 units of C, and 2 units of type D still available. The system is currently in a safe state. Consider the following independent requests for additional resources in the current state: REQ1: P0 requests 2 units of A, 2 units of B, 3 units of C and 3 units of D REQ2: P1 requests 1 units of A, 2 units of B, 3 units of C and 1 unit of D REQ3: P3 requests 2 units of A, 2 units of B, 2 units of C and 2 units of D Which process requirements will be satisfied in the above three conditions. Justify your answer.

          3.
An operating system uses the Banker's algorithm for deadlock avoidance when managing the
allocation of four resource types A, B, C and D to four processes P0, P1, P2 and P3. The table
given below presents the current system state at time T0.
\begin{tabular}{|c|cccc|cccc|}
\hline
P. & \multicolumn{4}{c|}{Allocation} & \multicolumn{4}{c|}{Max} \\
No & A & B & C & D & A & B & C & D \\
\hline
P0 & 3 & 0 & 2 & 4 & 5 & 1 & 2 & 7 \\
P1 & 2 & 2 & 2 & 0 & 3 & 2 & 2 & 2 \\
P2 & 3 & 2 & 2 & 2 & 3 & 3 & 2 & 2 \\
P3 & 0 & 5 & 2 & 0 & 4 & 6 & 2 & 2 \\
\hline
\end{tabular}
There are 2 units of type A, 2 units of type B, 3 units of C, and 2 units of type D still available.
The system is currently in a safe state. Consider the following independent requests for additional
resources in the current state:
REQ1: P0 requests 2 units of A, 2 units of B, 3 units of C and 3 units of D
REQ2: P1 requests 1 units of A, 2 units of B, 3 units of C and 1 unit of D
REQ3: P3 requests 2 units of A, 2 units of B, 2 units of C and 2 units of D
Which process requirements will be satisfied in the above three conditions. Justify your answer.

3.
An operating system uses the Banker's algorithm for deadlock avoidance when managing the
allocation of four resource types A, B, C and D to four processes P0, P1, P2 and P3. The table
given below presents the current system state at time T0.

P. 4c|Allocation 4c|Max

No A B C D A B C D

P0 3 0 2 4 5 1 2 7

P1 2 2 2 0 3 2 2 2

P2 3 2 2 2 3 3 2 2

P3 0 5 2 0 4 6 2 2

There are 2 units of type A, 2 units of type B, 3 units of C, and 2 units of type D still available.
The system is currently in a safe state. Consider the following independent requests for additional
resources in the current state:
REQ1: P0 requests 2 units of A, 2 units of B, 3 units of C and 3 units of D
REQ2: P1 requests 1 units of A, 2 units of B, 3 units of C and 1 unit of D
REQ3: P3 requests 2 units of A, 2 units of B, 2 units of C and 2 units of D
Which process requirements will be satisfied in the above three conditions. Justify your answer.

Added by Marc V.

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