Microprocessor Mock Test 7

10%

Question 1 of 10

1. The descriptor table that the 80386 supports is

GDT (Global descriptor table)

LDT (Local descriptor table)

All of the mentioned

IDT (Interrupt descriptor table)

Question 1 of 10

Question 2 of 10

2. In protected mode of 80386, the VM flag is set by using

IRET instruction or task switch operation

None of the mentioned

Task switch operation

IRET instruction

Question 2 of 10

Question 3 of 10

3. The instruction that is unable to set or read the VM (Virtual Mode) bit is

POPF

PUSHF and POPF

PUSHF

IRET

Question 3 of 10

Question 4 of 10

4. The paging unit is enabled only in

protected mode

none of the mentioned

addressing mode

virtual mode

Question 4 of 10

Question 5 of 10

5. A decimal digit can be represented by

packed BCD

unsigned integer

signed integer

unpacked BCD

Question 5 of 10

Question 6 of 10

6. 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

segmentation unit

execution unit

central processing unit

paging unit

Question 6 of 10

Question 7 of 10

7. The control register that stores the 32-bit linear address, at which the previous page fault is detected is

CR0

CR2

CR3

CR1

Question 7 of 10

Question 8 of 10

8. The register width used by the 32-bit addressing modes is

all of the mentioned

16 bits

32 bits

8 bits

Question 8 of 10

Question 9 of 10

9. The unit that organizes the physical memory, in terms of pages of 4KB size each is

paging unit

segmentation unit

instruction unit

execution unit

Question 9 of 10

Question 10 of 10

10. A 16-bit displacement that references a memory location using any of the addressing modes is

Pointer

BCD

Offset

Character

Question 10 of 10