16. \"IO instructions are privileged instructions\". TRUE or FALSE? 17. \"Under

Question

16. "IO instructions are privileged instructions". TRUE or FALSE? 17. "Under certain conditions, a given process can migrate directly from one device queue to another one, by-passing the ready queue." TRUE or FALSE? 18. "In Storage-Device Hierarchy the cost per bit decreases as we move downwards through the levels." TRUE or FALSE? 19. "The short-term (CPU) scheduler determines the number of processes in the main memory." TRUE or FALSE? 20. When browsing the old issues of a computer magazine, you come across an advertisement for a smartphone. It reads: "this system can hold up to 10 different applications in the main memory at a time" Does this mean that this system is necessarily a multiprogrammed one? Why or why not? Explain. Does this mean that this system is necessarily a time-sharing one? Why or why not? Explain.

Explanation / Answer

If you post more than 1 question, as per chegg guidelines I have to solve only first question.

Ques 16. TRUE

Priveledged instructions are the instructions which should be executed with extreme care as they could potentially harm the system. So, they should be executed with extreme precautions in a supervisory mode. As I/O instructions interact with outer surroundings, so hey can harm the system.

Ques 18. TRUE

In a memory heirarchy, the storage devices on the top like RAM, cache are very expensive and provide very little amount of storage as compared to the price. So, the cost per bit is more.

But the storage devices as we go towards the bottom like hard disk, magnetic tape are very cheap and provide large amount of storage. So, the cost per bit is less.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.