Segmentation and Paging

Embedded System

This set of Embedded Systems Problems focuses on “Segmentation and Paging”.

1. The modified bit is also known as
a) dead bit
b) neat bit
c) dirty bit
d) invalid bit

2. Which of the following have an 8 KB page?
a) DEC Alpha
b) ARM
c) VAX
d) PowerPC

3. Which of the following address is seen by the memory unit?
a) logical address
b) physical address
c) virtual address
d) memory address

4. Which of the following modes offers segmentation in the memory?
a) virtual mode
b) real mode
c) protected mode
d) memory mode

5. Which of the following is necessary for the address translation in the protected mode?
a) descriptor
b) paging
c) segmentation
d) memory

6. What does “G” in the descriptor entry describe?
a) gain
b) granularity
c) gate voltage
d) global descriptor

7. How many types of tables are used by the processor in the protected mode?
a) 1
b) 2
c) 3
d) 4

8. What does the table indicator indicate when it is set to one?
a) GDT
b) LDT
c) remains unchanged
d) toggles with GTD and LTD

9. What does GDTR stand for?
a) global descriptor table register
b) granularity descriptor table register
c) gate register
d) global direct table register

10. What does PMMU stands for?
a) protection mode memory management unit
b) paged memory management unit
c) physical memory management unit
d) paged multiple management unit

11. Which of the following support virtual memory?
a) segmentation
b) descriptor
c) selector
d) paging

12. What does DPL in the descriptor describes?
a) descriptor page level
b) descriptor privilege level
c) direct page level
d) direct page latch

13. What does “S” bit describe in a descriptor?
a) descriptor type
b) small type
c) page type
d) segmented type

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