Memory Management Mode

Question 1

allows the microprocessor to address only the first 1Mbyte

Answer 1

real-mode memory addressing

Question 2

older microprocessor uses this memory management mode.

Answer 2

real-mode

Question 3

It requires the microprocessor to operate in real-mode

Answer 3

disk operating system (DOS)

Question 4

It is an address created by the CPU for running a program.

Answer 4

logical address (virtual address)

Question 5

It is an actual address in the physical memory.

Answer 5

physical address

Question 6

defines the beginning address of any 64k-byte memory segment

Answer 6

segment address

Question 7

the distance above the start of the segment or that selects any location within the 64kilobyte of memory

Answer 7

offset address

Question 8

Intel 80386 and above microprocessors uses this memory management mode.

Answer 8

protected-mode

Question 9

it allows access to data and programs located above the first 1Megabyte of memory as well as within the first 1Megabyte of memory.

Answer 9

protected-mode memory addressing

Question 10

It requires the microprocessor to operate in protected-mode

Answer 10

windows

Question 11

describes the memory segment location, length and access rights

Answer 11

descriptor

Question 12

selects a descriptor from a descriptor table

Answer 12

selector

Question 13

2 types of descriptor table

Answer 13

Global descriptor table
Local descriptor table

Question 14

contains segment definitions that apply to all program.

Answer 14

Global descriptor table (system descriptor)

Question 15

unique to a specific application

Answer 15

Local descriptor table

Question 16

it contains the starting location of the memory segment

Answer 16

base address

Question 17

contains the last offset address found in a segment

Answer 17

segment limit

Question 18

contains addressing and control information which is used to control how a 32 – bit linear address is generated

Answer 18

descriptor

Question 19

uses selector and offset combination to produce linear address

Answer 19

Segmentation mechanism

Question 20

this is where address space are divided into pages of equal size

Answer 20

paging mechanism

Question 21

contains a 13 – bit index field that is used to select one of 8, 192 segment descriptors

Answer 21

selector

Question 22

contain a 32 – bit addresses that specifies the beginning of the segment of memory controlled by the descriptor

Answer 22

Segment descriptors

Question 23

Parameters in descriptor that exist only on 80386 and Above.

Answer 23

availability bit
data bit
granularity bit

Question 24

It control access to protected mode memory segment.

Answer 24

access right byte