OSGs

OSGs

University

52 Qs

quiz-placeholder

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OSGs

OSGs

Assessment

Quiz

Science

University

Practice Problem

Hard

Created by

Lê Khang

Used 2+ times

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52 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What does the PC (Program Counter) store?

A. Current instruction

B. Address of the next instruction

C. Address of the last executed instruction

D. Value of the operand

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What causes a page fault?

A. Division by zero

B. CPU overheating

C. Referencing a page not in memory

D. Stack overflow

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the purpose of the backing store?

A. To permanently store user files

B. To hold system logs

C. To hold pages that are not in main memory


D. To back up BIOS

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

In virtual memory systems, what does "swapping" refer to?

A. Switching CPUs

B. Transferring processes between main memory and disk


C. Changing OS versions

D. Altering thread priorities

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is DMA used for in memory systems?

A. CPU process management

B. Fast data transfer without CPU intervention

C. Data compression

D. Instruction decoding

6.

MULTIPLE CHOICE QUESTION

10 sec • 2 pts

What happens if the OS restarts an instruction that was auto-incremented before a page fault?

A. Nothing is required

B. The register must be increased again

C. The OS must decrease the register before retrying

D. Instruction cannot be restarted

7.

MULTIPLE CHOICE QUESTION

5 sec • 1 pt

What is the unit of memory that the OS uses in paging?

A. Segment

B. Page

C. Block

D. Frame

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