Microprocessor Mock Test 7

10%

Question 1 of 10

1. The segments in 80386 real mode are

non-overlapped

overlapped

none of the mentioned

either overlapped or non-overlapped

Question 1 of 10

Question 2 of 10

2. To form a physical memory address, appropriate segment register contents are

shifted by left by 4 positions

added to 16-bit offset address

all of the mentioned

operated using one of addressing modes

Question 2 of 10

Question 3 of 10

3. The descriptor table that the 80386 supports is

IDT (Interrupt descriptor table)

GDT (Global descriptor table)

All of the mentioned

LDT (Local descriptor table)

Question 3 of 10

Question 4 of 10

4. If the Default operation size bit, D=1, the code segment operation size selected is

16-bit

64-bit

32-bit

8-bit

Question 4 of 10

Question 5 of 10

5. The unit that is needed for virtual mode 80386, only to run the 8086 programs, which require more than 1 Mbyte of memory for memory management functions, is

central processing unit

execution unit

segmentation unit

paging unit

Question 5 of 10

Question 6 of 10

6. The instruction that shifts the specified number of bits in the instruction, from the upper side of the source operand into the lower side of the destination operand is

None of the mentioned

SHLD

SETNS

SHRD

Question 6 of 10

Question 7 of 10

7. Contents of an index register are multiplied by a scale factor and then added to base register to get the operand offset in

base scaled indexed mode

scaled indexed mode

indexed mode

none of the mentioned

Question 7 of 10

Question 8 of 10

8. The operation that can be performed on segments in 80386 real mode is

read

write

execute

all of the mentioned

Question 8 of 10

Question 9 of 10

9. The size of the pages in the paging scheme is

fixed

both variable and fixed

none

variable

Question 9 of 10

Question 10 of 10

10. Which of the following is not a scale factor of addressing modes of 80386?

Question 10 of 10