File System

Question 1

What is the disk called in an HDD?

Answer 1

A Platter

Question 2

What are HDD platters bound together around?

Answer 2

Spindle

Question 3

What is at the end of a HDD arm?

Answer 3

Disk Read/Write head

Question 4

Each partition of an HDD is given what kind of name?

Answer 4

Drive Letter, ex. C:

Question 5

How many bytes are in a sector?

Answer 5

512 bytes

Question 6

Groups of sectors together

Answer 6

Cluster

Question 7

The smallest physical storage unit on a disk

Answer 7

Sector

Question 8

The smallest amount of disk space that can be allocated to hold a file.

Answer 8

Cluster

Question 9

The time to move the disk arm to the cylinder.

Answer 9

Seek time

Question 10

The time for the desired sector to rotate to the disk head.

Answer 10

Rotational Latency

Question 11

4 algorithms for disk scheduling.

Answer 11

1) First come, first served
2) Shortest seek time
3) Elevator (scan)
4) Shortest Positioning Time First

Question 12

What does a file system do?

Answer 12

Controls how data is stored and retrieved to mass storage devices.

Question 13

3-part architecture of the file system.

Answer 13

1) Logical
2) Physical
3) Virtual

Question 14

The file system architecture that is presented to the application programmer or user.

Answer 14

Logical File System

Question 15

The code that talks to the hardware in a file system.

Answer 15

Physical File System

Question 16

Which part of the file system architecture deals with device organization and disk scheduling algorithms?

Answer 16

Physical File System

Question 17

The architecture of the file system responsible for bringing together the physical and logical.

Answer 17

Virtual File System

Question 18

What is a file?

Answer 18

Linear array of bytes with a name and a FCB or inode number associated.

Question 19

What is a directory?

Answer 19

A list of pairs of file names and low-level names.

Question 20

Information about a file’s format and organization stored in a file header, only visible to the file-system.

Answer 20

Metadata

Question 21

Non human-readable name for a file

Answer 21

Magic number, or Identifier

Question 22

Determines which applications are allowed to access and interpret a file

Answer 22

File type

Question 23

File type is identified using:

Answer 23

File extension

Question 24

The topmost directory

Answer 24

Root Directory

Question 25

A path name that begins at the root

Answer 25

Absolute

Question 26

A path name that begins at the current directory

Answer 26

Relative

Question 27

Three methods for disk allocation

Answer 27

1) Contiguous
2) Linked
3) Indexed

Question 28

Which disk allocation method is best in most cases?

Answer 28

Contiguous Allocation

Question 29

What is a limitation of contiguous allocation?

Answer 29

Fragmentation

Question 30

A disk allocation method that uses linked list of blocks.

Answer 30

Linked Allocation

Question 31

When a file doesn’t entirely fit a series of clusters.

Answer 31

Internal Fragmentation

Question 32

When a file’s clusters are not allocated contiguously.

Answer 32

External Fragmentation