Operating System Interview Questions Advanced - Set 05 - ObjectiveBooks

Operating System Interview Questions Advanced - Set 05

Practice Test: Question Set - 05


1. An incremental backup
    (A) Should be done each month
    (B) Uses more tapes
    (C) Saves all files
    (D) Saves only files that have recently changed

2. While running DOS on a PC, which command would be used to duplicate the entire diskette?
    (A) COPY
    (B) DISKCOPY
    (C) CHKDSK
    (D) TYPE

3. For how many processes which are sharing common data, the Dekker's algorithm implements mutual exclusion?
    (A) 1
    (B) 2
    (C) 3
    (D) 4

4. Which of the following statement is true?
    (A) The LRU algorithm pages out pages that have been used recently
    (B) Thrashing is a natural consequence of virtual memory systems
    (C) Seek analysis is used for analyzing control-unit busy problems
    (D) All of the above

5. The principle of locality of reference justifies the use of
    (A) Reenterable
    (B) Non reusable
    (C) Virtual memory
    (D) Cache memory

6. Scissoring enables
    (A) A part of data to be displayed
    (B) Entire data to be displayed
    (C) Full data display on full area of screen
    (D) No data to be displayed

7. Assembler is
    (A) A program that places programs into memory and prepares them for execution
    (B) A program that automate the translation of assembly language into machine language
    (C) A program that accepts a program written in a high level language and produces an object program
    (D) Is a program that appears to execute a source program as if it were machine language

8. In analyzing the compilation of PL/I program, the term "Lexical analysis" is associated with
    (A) Recognition of basic syntactic constructs through reductions
    (B) Recognition of basic elements and creation of uniform symbols
    (C) Creation of more optional matrix
    (D) Use of macro processor to produce more optimal assembly code

9. Four necessary conditions for deadlock to exist are: mutual exclusion, no-preemption, circular wait and
    (A) Hold and wait
    (B) Deadlock avoidance
    (C) Race around condition
    (D) Buffer overflow

10. Two basic types of operating systems are:
    (A) Sequential and direct
    (B) Batch and timesharing
    (C) Sequential and Realtime
    (D) Batch and interactive

11. While working with MS-DOS, which command will you use to transfer a specific file from one disk to another?
    (A) DISKCOPY
    (B) COPY
    (C) RENAME
    (D) FORMAT

12. The state transition initiated by the user process itself in an operating system is
    (A) Block
    (B) Dispatch
    (C) Wake up
    (D) Timer run out

13. Link encryption
    (A) Is more secure than end-to-end encryption
    (B) Is less secure than end-to-end encryption
    (C) Cannot be used in a public network
    (D) Is used only to debug

14. To avoid the race condition, the number of processes that may be simultaneously inside their critical section is
    (A) 8
    (B) 1
    (C) 16
    (D) 0

15. The problem of thrashing is affected significantly by:
    (A) Program structure
    (B) Program size
    (C) Primary-storage size
    (D) All of the above

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