Week 6 - Example File Systems

Question 1

What does FAT stand for?

Answer 1

File Allocation Table.

Question 2

What is FAT supported on?

Answer 2

DOS
Windows
Unix
Digital Cameras
Game Consoles
Mobile Phones
USB Keys

Question 3

What is the size limit of FAT12?

Answer 3

32 MB

Question 4

What is FAT12 used on?

Answer 4

Floppy Disks

Question 5

What are the main versions of FAT?

Answer 5

FAT12
FAT16
FAT32

Question 6

What is the most common version of FAT?

Answer 6

FAT32

Question 7

What is the size limit of FAT16?

Answer 7

2 GB

Question 8

What is the size limit of FAT32?

Answer 8

2 TB

Question 9

What is the max file size of a file on FAT32?

Answer 9

4 GB

Question 10

What are the 3 physical sections of a FAT file system?

Answer 10

Reserved area
FAT area
Data area

Question 11

What is the Reserved area use for?

Answer 11

For general file system information

Question 12

What is the FAT area use for?

Answer 12

For primary and backup FAT structures

Question 13

What is the Data area use for?

Answer 13

Used for storing actual file and directory content. The Data area is made of clusters. This is the main area of a FAT system.

Question 14

What type of address is used for the reserved and FAT areas?

Answer 14

Sector addresses

Question 15

What type of address is used in the data area?

Answer 15

Cluster addresses

Question 16

What number do Cluster addresses start from?

Answer 16

2

Question 17

What is the typical range of size for a Cluster?

Answer 17

1 Sector (512 bytes) to 128 Sector (62 KB)

Question 18

What is the first sector of a FAT file system used for?

Answer 18

Used as a Boot sector, to store boot code (Used in the boot process) and information about the file system.

Question 19

How do you calculate the size of the Data area?

Answer 19

Subtract the starting address of the data area from the total number of sectors in the file system.

Question 20

What are the first coupl of sectors in the Data area reserved for in FAT12 and FAT16?

Answer 20

The Root Directory.

Question 21

How do you find the root directory in FAT32 Data areas?

Answer 21

The address of the root directory is given in the boot sector. This means the Root directory can be anywhere in the Data area.

Question 22

How many entries do you ave in the FAT table?

Answer 22

As many entries as the number of Clusters.