Protected Virtual Address Mode (PVAM) – 1 MCQ’s

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This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Protected Virtual Address Mode (PVAM) – 1″.

1. The procedure of storing back the partial results on to the secondary storage is called
a) mapping
b) swapping
c) unswapping
d) pipelining

2. The ability of 80286 to address the virtual memory per task is
a) 1MB
b) 1GB
c) 1TB
d) none of the mentioned

3. The procedure of fetching the chosen program segments or data from the secondary storage into the physical memory is
a) mapping
b) swapping
c) unswapping
d) pipelining

4. The branch instructions are handled by
a) swapping mechanism
b) unswapping mechanism
c) operating system
d) all of the mentioned

5. The descriptors that are used for subroutines and interrupt service routines are
a) data segment descriptors
b) gate descriptors
c) code segment descriptors
d) system segment descriptors

6. A descriptor is used to carry out
a) transfer of control
b) task switching
c) to store privilege level and segment limit
d) all of the mentioned

7. A descriptor contains information of
a) program segment
b) page
c) regarding segment and its access rights
d) all of the mentioned

8. A segment with low privilege level is not allowed to access another segment of
a) low privilege level
b) high privilege level
c) low and high privilege level
d) none of the mentioned

9. The descriptor that is used for special system data segments and control transfer operations is
a) data segment descriptors
b) gate descriptors
c) code segment descriptors
d) system segment descriptors

10. In access rights byte, if P (Present)=1, then the segment is mapped into
a) physical memory
b) virtual memory
c) no mapping takes place
d) none of the mentioned

11. If S (segment descriptor)=1, then the descriptor selected is
a) code segment descriptor
b) data segment descriptor
c) stack segment descriptor
d) all of the mentioned

12. A code segment descriptor contains
a) 16-bit segment limit
b) 24-bit segment base address
c) 8-bit access rights byte
d) all of the mentioned

13. In access rights byte, to select system segment descriptor, the condition is
a) S=1
b) S=0
c) S not equal to zero
d) none of the mentioned

14. The memory of limit field is
a) 2 bits
b) 4 bits
c) 8 bits
d) 16 bits

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