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Digital Assistant 2023 PART B - 100 Marks All Topics MCQs

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

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

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

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

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

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

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

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

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

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

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

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

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:

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:

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

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

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

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

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

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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