File System Recovery - Operating System Questions & Answers

1.

Each set of operations for performing a specific task is a _________

   A.) program
   B.) code
   C.) transaction
   D.) all of the mentioned

Answer: Option 'C'

​transaction

2.

When an entire committed transaction is completed, ___________

   A.) it is stored in the memory
   B.) it is removed from the log file
   C.) it is redone
   D.) none of the mentioned

Answer: Option 'B'

it is removed from the log file

3.

Once the changes are written to the log, they are considered to be ________

   A.) committed
   B.) completed
   C.) aborted
   D.) none of the mentioned

Answer: Option 'A'

committed

4.

A consistency checker __________________ and tries to fix any inconsistencies it finds.

   A.) compares the data in the secondary storage with the data in the cache
   B.) compares the data in the directory structure with the data blocks on disk
   C.) compares the system generated output and user required output
   D.) all of the mentioned

Answer: Option 'B'

compares the data in the directory structure with the data blocks on disk

5.

A circular buffer :

   A.) overwrites older values as it goes
   B.) writes to the end of its space and then continues at the beginning
   C.) all of the mentioned
   D.) none of the mentioned

Answer: Option 'B'

writes to the end of its space and then continues at the beginning

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