Discuss three major complications that concurrent processing adds to an operating system?

Answer 1

1. The OS has to keep track of the main memory address space allocated to each process so that a process does not affect or harm other processes data. This is a necessay , for example, a virus may try to destroy or modify other process data.

2. Switching from one process to another process leads to time overhead, this requires storing the current register values and loading the register values of the next process from its PCB(program Control Block).

3. If a running process requires large space in memory then other processs needs to be dumped back to hard disk which again leads to time overhead.

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Answer 2

priority processes in the queue may not be executed in time

it may lead to deadlock if a certain process require more time to be executed

switching between one process to another may lead to time overhead