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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