80386 Real Address Mode MCQs : This section focuses on the "80386 Real Address Mode". These Multiple Choice Questions (MCQs) should be practiced to improve the 80386 Real Address Mode skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
For a single task in protected mode, the 80386 can address the virtual memory of
A. 32 GB
B. 64 MB
C. 32 TB
D. 64 TB
Question 2
If the paging unit is disabled, then the linear address is used as
A. effective address
B. physical address
C. segment base address
D. none of the mentioned
Question 3
If the paging unit is enabled, then it converts a linear address into
A. effective address
B. physical address
C. segment base address
D. none of the mentioned
Question 4
The linear address is calculated by
A. effective address + segment base address
B. effective address – segment base address
C. effective address + physical address
D. effective address – physical address
Question 5
The operation that can be performed on segments in 80386 real mode is
A. read
B. write
C. execute
D. all of the mentioned
Question 6
The paging unit is enabled only in
A. virtual mode
B. addressing mode
C. protected mode
D. none of the mentioned
Question 7
The instructions available in the 80386 that are not available in its real address mode is
A. addressing techniques
B. instructions for protected address mode
C. instructions for interrupt handling
D. all of the mentioned
Question 8
The selectors contain the segment’s
A. segment limit
B. base address
C. access rights byte
D. all of the mentioned
Question 9
The unit that is disabled in real address mode is
A. central processing unit
B. memory management unit
C. paging unit
D. bus control unit
Question 10
To form a physical memory address, appropriate segment register contents are
A. shifted by left by 4 positions
B. added to 16-bit offset address
C. operated using one of addressing modes
D. all of the mentioned