1. "old" is a state of a process true or false?

Answer. true

2. What is a Process Control Block?

Answer. Data Structure

3. The entry of all the PCBs of the current processes is in ?

Answer. Process Table

4. What is the degree of multiprogramming?

Answer. the number of processes in memory

5. A single thread of control allows the process to perform how many task at a time ?

Answer. only one task at a time

6. What is the objective of multiprogramming?

Answer. Have some process running at all times

7. The initial program that is run when the computer is powered up is called

Answer. bootstrap program

8. How does the software trigger an interrupt?

Answer. Executing a special operation called system call

9. What is a trap/exception?

Answer. software generated interrupt caused by an error

10. What is an ISR?

Answer. Interrupt Service Routine

11. What is an interrupt vector?

Answer. It is an address that is indexed to an interrupt handler

12. DMA is used for

Answer. High speed devices(disks and communications network)

















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