Briefly describe conditions that must hold for deadlock situation to occur?

1. Mutual exclusion: At least one resource must be held in a non-sharable mode, meaning only one process can use it at a time.

2. Hold and wait: Processes must hold resources already allocated to them while waiting to acquire additional resources.

3. No preemption: Resources cannot be forcibly taken away from a process; they must be released voluntarily.

4. Circular wait: A cycle of processes exists, where each process is waiting for a resource held by the next process in the cycle.

Conditions for Deadlock:

- Mutual exclusion: Only one process can access resources at a time.
- Hold and wait: A process holds resources while waiting for others.
- No preemption: Resources cannot be forcibly taken away from a holding process.
- Circular wait: A set of processes form a circular chain, each waiting for the next in the chain to release resources.