Operating Systems Concepts - 02

01. Which of the following statements is not true about the FORTRAN language?

  • 1FORTRAN is a high level language
  • 2A FORTRAN program, written for the IBM-PC, is totally different from a FORTRAN program written for execution on the SUN machine
  • 3FORTRAN is extensively used to write programs for performing scientific computations
  • 4All of the above
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

02. A task in a blocked state

  • 1is executable
  • 2is running
  • 3must still be placed in the run queues
  • 4is waiting for same temporarily unavailable resources
Answer:- 1
Explanation:-

Solution:
A task in a blocked state is waiting for same temporarily unavailable resources

03. The command interpreter

  • 1is usually the primary user interface
  • 2requires fixed format commands
  • 3is menu drive
  • 4is quite different from the SCL interpreter
Answer:- 1
Explanation:-

Solution:
The command interpreter is usually the primary user interface

04. In an absolute loading scheme, which loader function is accomplished by assembler.

  • 1Reallocation
  • 2Allocation
  • 3Linking
  • 4Loading
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

05. Backups should be done

  • 1daily for most installations
  • 2weekly for most installations
  • 3as several image copies, followed by an incremental
  • 4as several incrementals, followed by an image copy
Answer:- 1
Explanation:-

Solution:
Backups should be done as several incrementals, followed by an image copy

06. Which of the following scheduling objectives should be applied to the following: the system should admit jobs to create a mix that will keep most devices busy

  • 1to be fair
  • 2to balance resource utilization
  • 3to obey priorities
  • 4to be predictable
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

07. The instruction register

  • 1is a hardware memory device which denotes the location of the current instruction being executed.
  • 2is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
  • 3contains the address of the memory location that is to be read from or stored into.
  • 4contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
Answer:- 1
Explanation:-

Solution:
The instruction register is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.

08. Non-modifiable procedures are called

  • 1serially usable procedures
  • 2concurrent procedures
  • 3reentrant procedures
  • 4topdown procedures
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

09. Which of the following statements is false?

  • 1a process scheduling algorithm is preemptive if the CPU can be forcibly removed from a process
  • 2time sharing systems generally use preemptive CPU scheduling
  • 3response time are more predictable in preemptive systems than in non preemptive systems
  • 4real time systems generally use non-preemptive CPU scheduling
Answer:- 1
Explanation:-

No explanation is given for this question Let's Discuss on Board

10. Which of the following filename extension suggests that the file is a backup copy of another file?

  • 1.txt
  • 2.com
  • 3.bas
  • 4.bak
Answer:- 1
Explanation:-

Solution:
In computing, ".bak" is a filename extension commonly used to signify a backup copy of a file.
When a program is about to overwrite an existing file (for example, when the user saves the document they are working on), the program may first make a copy of the existing file, with .bak appended to the filename. This common .bak naming scheme makes it possible to retrieve the original contents of the file. In a similar manner, a user may also manually make a copy of the file before the change and append .bak to the filename.

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