Basic Operating System MCQ
Basic Operating System MCQ
531. Fragmentation of the file system
- can always be prevented
- Occurs only if the file system is used improperly
- can be temporarily removed by compaction
- is a characterstic of all file systems
532. File record length
- should always be fixed
- should always be variable
- depends upon the size of the file
- should be chosen to match the data character
533. Disaster recovery
- is needed by every installation
- is never needed
- varies in degree between installations
- requires off site computer for immediate use
534. Wild-card specifies
- provide an easy way of finding groups of related files
- are only used when printing the contents of files
- can be used when writing a file
- allow several files to be read simultaneously
535. The allocation map
- is used to store program data
- specifies which blocks are used by which file
- is update by applications programs
- allows programs to erase files
536. The activity of a file
- is a low percentage of number of records that are added to or deleted from a file
- is a measure of the percentage of existing records updated during a run
- refers to how colsely the files fit into the allocated space
- is a measure of the number of records added or deleted from a file compassed with the original number of records
537. The volatility of a file refers to
- The number of records added or deleted from a file composed to the original number of records in that file
- Efficiency with which non-sequential files are processed
- The extent where the records of thefile are contiguous and in proximity to others
- Percentage of records that has changed in a given time period
538. Which types of file orgaanization are supported by magnetic tape ?
- random files
- contiguous sequential file
- indexedsequential file
- all of the above
539. Address Binding id defined as
- Compiler wil typically bind these symbolic addresses to relocatabe addresses
- Each binding is a mapping from one address space to a another
- The linkage editor or loader win in turn bind these relocatable addresses to absolute addresses
- All of the above
540. Compile time
- Where the process will reside in memory, then absolute code can be generated.
- Where the process will reside in memory, then the compiler must generate relocatable code.
- If the process can be moved during its execution from one memory segment to another, the binding must be delayed until run time
- All of the above