OS File Systems and Their Implementation

high level, low level

low level, high level

complex, simple

low level, complex

pointer to the entry in the open file table

pointer to the entry in the system wide table

a file to the process calling it

none of the mentioned

user will need to remember a lot of passwords

it is not reliable

it is not efficient

all of the mentioned

their maintenance

their length

their permissions

all of the mentioned

open the file

read the file

write into the file

all of the mentioned

disk without file system

empty disk

disk lacking logical file system

disk having file system

abstract

primitive

public

private

swap space

operating system

seperate directory structure

none of the mentioned

internal fragmentation

external fragmentation

starvation

all of the mentioned

actual file exists

there are two copies of the file

the changes made by one person are not reflected to the other

the changes made by one person are reflected to the other