File System Implementation - Allocation Methods - 1 - Operating System Questions & Answers

1.

_______ and ________ are the most common strategies used to select a free hole from the set of available holes.

   A.) First fit, Best fit
   B.) Worst fit, First fit
   C.) Best fit, Worst fit
   D.) None of the mentioned

Answer: Option 'A'

​First fit, Best fit

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2.

_______ and ________ are the most common strategies used to select a free hole from the set of available holes.

   A.) First fit, Best fit
   B.) Worst fit, First fit
   C.) Best fit, Worst fit
   D.) None of the mentioned

Answer: Option 'A'

​First fit, Best fit

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3.

The first fit and best fit algorithms suffer from :

   A.) internal fragmentation
   B.) external fragmentation
   C.) starvation
   D.) all of the mentioned

Answer: Option 'B'

​external fragmentation

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4.

The first fit and best fit algorithms suffer from :

   A.) internal fragmentation
   B.) external fragmentation
   C.) starvation
   D.) all of the mentioned

Answer: Option 'B'

​external fragmentation

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5.

To solve the problem of external fragmentation, ________ needs to be done periodically.

   A.) compaction
   B.) check
   C.) formatting
   D.) replacing memory

Answer: Option 'A'

compaction

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6.

To solve the problem of external fragmentation, ________ needs to be done periodically.

   A.) compaction
   B.) check
   C.) formatting
   D.) replacing memory

Answer: Option 'A'

compaction

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7.

If too little space is allocated to a file

   A.) the file will not work
   B.) there will not be any space for the data, as the FCB takes it all
   C.) the file cannot be extended
   D.) the file cannot be opened

Answer: Option 'C'

​the file cannot be extended

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8.

If too little space is allocated to a file

   A.) the file will not work
   B.) there will not be any space for the data, as the FCB takes it all
   C.) the file cannot be extended
   D.) the file cannot be opened

Answer: Option 'C'

​the file cannot be extended

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9.

One difficulty of contiguous allocation is :

   A.) finding space for a new file
   B.) inefficient
   C.) costly
   D.) time taking

Answer: Option 'A'

​finding space for a new file

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10.

One difficulty of contiguous allocation is :

   A.) finding space for a new file
   B.) inefficient
   C.) costly
   D.) time taking

Answer: Option 'A'

​finding space for a new file

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11.

The real disadvantage of a linear list of directory entries is the :

   A.) size of the linear list in memory
   B.) linear search to find a file
   C.) it is not reliable
   D.) all of the mentioned

Answer: Option 'B'

​linear search to find a file

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12.

The real disadvantage of a linear list of directory entries is the :

   A.) size of the linear list in memory
   B.) linear search to find a file
   C.) it is not reliable
   D.) all of the mentioned

Answer: Option 'B'

​linear search to find a file

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13.

Contiguous allocation of a file is defined by :

   A.) disk address of the first block & length:
   B.) length & size of the block
   C.) size of the block
   D.) total size of the file

Answer: Option 'A'

disk address of the first block & length:

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14.

Contiguous allocation of a file is defined by :

   A.) disk address of the first block & length:
   B.) length & size of the block
   C.) size of the block
   D.) total size of the file

Answer: Option 'A'

disk address of the first block & length:

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15.

The three major methods of allocating disk space that are in wide use are :

   A.) contiguous
   B.) indexed
   C.) linked
   D.) all of the mentioned

Answer: Option 'D'

all of the mentioned

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16.

The three major methods of allocating disk space that are in wide use are :

   A.) contiguous
   B.) indexed
   C.) linked
   D.) all of the mentioned

Answer: Option 'D'

all of the mentioned

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17.

In contiguous allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'A'

each file must occupy a set of contiguous blocks on the disk

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18.

In contiguous allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'A'

each file must occupy a set of contiguous blocks on the disk

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19.

In linked allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'B'

​each file is a linked list of disk blocks

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20.

In linked allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'B'

​each file is a linked list of disk blocks

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21.

In indexed allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'C'

all the pointers to scattered blocks are placed together in one location

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22.

In indexed allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'C'

all the pointers to scattered blocks are placed together in one location

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23.

On systems where there are multiple operating system, the decision to load a particular one is done by :

   A.) boot loader
   B.) bootstrap
   C.) process control block
   D.) file control block

Answer: Option 'A'

boot loader

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24.

On systems where there are multiple operating system, the decision to load a particular one is done by :

   A.) boot loader
   B.) bootstrap
   C.) process control block
   D.) file control block

Answer: Option 'A'

boot loader

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25.

The VFS (virtual file system) activates file system specific operations to handle local requests according to their _______

   A.) size
   B.) commands
   C.) timings
   D.) file system types

Answer: Option 'D'

file system types

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26.

The VFS (virtual file system) activates file system specific operations to handle local requests according to their _______

   A.) size
   B.) commands
   C.) timings
   D.) file system types

Answer: Option 'D'

file system types

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27.

The three major methods of allocating disk space that are in wide use are :

   A.) linked
   B.) contiguous
   C.) indexed
   D.) all of the mentioned

Answer: Option 'D'

all of the mentioned

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28.

The three major methods of allocating disk space that are in wide use are :

   A.) linked
   B.) contiguous
   C.) indexed
   D.) all of the mentioned

Answer: Option 'D'

all of the mentioned

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29.

In contiguous allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'A'

each file must occupy a set of contiguous blocks on the disk

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30.

In contiguous allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'A'

each file must occupy a set of contiguous blocks on the disk

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31.

In indexed allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'C'

​all the pointers to scattered blocks are placed together in one location

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32.

In indexed allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'C'

​all the pointers to scattered blocks are placed together in one location

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33.

In linked allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'B'

​each file is a linked list of disk blocks

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34.

In linked allocation :

   A.) each file must occupy a set of contiguous blocks on the disk
   B.) each file is a linked list of disk blocks
   C.) all the pointers to scattered blocks are placed together in one location
   D.) none of the mentioned

Answer: Option 'B'

​each file is a linked list of disk blocks

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35.

On systems where there are multiple operating system, the decision to load a particular one is done by :

   A.) boot loader
   B.) bootstrap
   C.) process control block
   D.) file control block

Answer: Option 'A'

​boot loader

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36.

On systems where there are multiple operating system, the decision to load a particular one is done by :

   A.) boot loader
   B.) bootstrap
   C.) process control block
   D.) file control block

Answer: Option 'A'

​boot loader

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37.

The VFS (virtual file system) activates file system specific operations to handle local requests according to their _______

   A.) size
   B.) commands
   C.) timings
   D.) file system types

Answer: Option 'D'

file system types

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38.

The VFS (virtual file system) activates file system specific operations to handle local requests according to their _______

   A.) size
   B.) commands
   C.) timings
   D.) file system types

Answer: Option 'D'

file system types

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39.

_______ and ________ are the most common strategies used to select a free hole from the set of available holes.

   A.) First fit, Best fit
   B.) Worst fit, First fit
   C.) Worst fit, First fit
   D.) None of the mentioned

Answer: Option 'A'

First fit, Best fit

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40.

_______ and ________ are the most common strategies used to select a free hole from the set of available holes.

   A.) First fit, Best fit
   B.) Worst fit, First fit
   C.) Worst fit, First fit
   D.) None of the mentioned

Answer: Option 'A'

First fit, Best fit

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41.

One difficulty of contiguous allocation is :

   A.) inefficient
   B.) finding space for a new file
   C.) costly
   D.) time taking

Answer: Option 'B'

finding space for a new file

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42.

One difficulty of contiguous allocation is :

   A.) inefficient
   B.) finding space for a new file
   C.) costly
   D.) time taking

Answer: Option 'B'

finding space for a new file

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43.

Contiguous allocation of a file is defined by :

   A.) disk address of the first block & length
   B.) length & size of the block
   C.) size of the block
   D.) total size of the file

Answer: Option 'A'

​disk address of the first block & length

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44.

Contiguous allocation of a file is defined by :

   A.) disk address of the first block & length
   B.) length & size of the block
   C.) size of the block
   D.) total size of the file

Answer: Option 'A'

​disk address of the first block & length

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45.

The real disadvantage of a linear list of directory entries is the :

   A.) size of the linear list in memory
   B.) linear search to find a file
   C.) it is not reliable
   D.) all of the mentioned

Answer: Option 'B'

​linear search to find a file

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46.

The real disadvantage of a linear list of directory entries is the :

   A.) size of the linear list in memory
   B.) linear search to find a file
   C.) it is not reliable
   D.) all of the mentioned

Answer: Option 'B'

​linear search to find a file

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47.

The first fit and best fit algorithms suffer from :

   A.) internal fragmentation
   B.) external fragmentation
   C.) starvation
   D.) all of the mentioned

Answer: Option 'B'

​external fragmentation

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48.

The first fit and best fit algorithms suffer from :

   A.) internal fragmentation
   B.) external fragmentation
   C.) starvation
   D.) all of the mentioned

Answer: Option 'B'

​external fragmentation

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49.

To solve the problem of external fragmentation, ________ needs to be done periodically.

   A.) formatting
   B.) check
   C.) compaction
   D.) replacing memory

Answer: Option 'C'

​compaction

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50.

To solve the problem of external fragmentation, ________ needs to be done periodically.

   A.) formatting
   B.) check
   C.) compaction
   D.) replacing memory

Answer: Option 'C'

​compaction

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