Multiple
Choice Questions(Computer)
1. Which
of the following is the product of data
processing
a.
information b. data
c.
software program d. system
2. The
process of putting data into a storage location
is called
a. reading
b. writing
c.
controlling d. hand shaking
3. The
process of copying data from a memory
location
is called
a. reading
b. writing
c.
controlling d. booting
4. A list
of instructions used by a computer is
called
a. program
b. CPU
c. text d.
output
5. The CPU
consists of
a. input,
output and processing
b. control
unit, primary storage and secondary
storage
c. Control
unit; arithmetic logic unit and primary
storage
d. input,
processing and storage
6. Which
of the following is true about primary
storage
a. it is a
part of the CPU
b. It
allows very fast access to data
c. It is
relatively more expensive
d. all of
the above
7. Which
of the following is the most powerful
type of
the computer
a. main
frame b. super conductor
c. micro
computer d. super computer
8.
Software instruction intended to satisfy a
user's
specific processing needs are called
a. system
software b. process software
c.
documentation d. application software
9. The
computer device primarily used to provide
hardcopy
is the
a. CRT b.
line printer
c.
computer console d. card reader
10. Which
one of the following can produce the
final
product of machine processing in a form
usable by
humans
a. storage
b. control
c. input
device d. output device
11. The
term 'memory' applies to which one of the
following
a. logic
b. storage
c. input
device d. output device
12. A
program written in machine language is called
........
program.
a. object
b. computer
c.
assembler d. high level
13. A
source program is the program written in
..........
language.
a. English
b. symbolic
c. high
level d. object
14. A
typical modern computer uses
a.
magnetic cores for secondary storage
b. LSI
chips
c.
magnetic tape for primary memory
d. more
than 10,000 vaccum tubes
15. A
collection of 8 bits is called
a. byte b.
record
c. word d.
nibble
16.
General purpose computers are those that can
be adopted
to countless uses simply by
changing
its
a. output
device b. input device
c. processor
d. program
17. The
current generation of computers
a. second
b. fifth
c. fourth
d. third
18. The
boolean expression (A C)
(B C)
simplifies
to
a. C AB b. C(A B)
c. BC A d. None of these
19. To
implement all functions of the basic logic
functions,
it needs
a. OR gate
b. NOT gate
c. AND and
NOT gates
d. None of
these
20. In the
binary number 110.101, the fractional part
has the
value
a. 0.625
b. 0.125
c. 0.875
d. 0.5
21. The
value of binary 1111 is
a. 23 -1
b. 24
c. 24 - 1
d. None of these
22. The
value of 25 in octal system is
a. 20 b.
40
c. 400 d.
None of these
23. A hexa
decimal number 'AO' has the decimal value
a. 80 b.
256 c. 100 d. 160
24. The
binary representation of hexadecimal 'C3' is
a. 1111 b.
110011
c. 110001
d. 11000011
25. The
ASCII code is for information interchange
by a
binary code for
a. numbers
only b. alphabets only
c.
alphanumeric and other common symbols
d. None of
these
26. A four
bit number is given as 1001. Its 1's
complement
is
a. 1001 b.
11001
c. 0110 d.
0101
27. 2's
complement representation of a decimal
number -4
is
a. 0100 b.
1100
c. 1011 d.
1010
28. BCD
numbers are obtained
a. by
converting decimal number to binary
b. by
converting decimal to octal
c. when
each decimal digit is represented by four bit
binary
d. by
converting binary to decimal.
29. A gate
in which all inputs must be low to get a
high
output is called
a. an
inverter b. a NOR gate
c. an AND
gate d. a NAND gate
30. For a
logical circuit there are 'n' binary inputs.
Then the
number of different input
combinations
in the truth table is
a. 2n b.
2/n
c. 2n d.
2(n+1)
31. Which
of the following performs modulation
and
demodulation
a.
Satellite b. modem
c. fiber
optic d. amplifier
32. A
characteristic of multiprogramming system is
a.
simultaneous execution of program
instructions
from two applications
b.
concurrent processing of two or more programs
c.
multiple CPU's
d. all of
the above
33.
Communication circuits that transmit data in
both
directions but not at the same time are
operating
in
a. simplex
mode b. half-duplex mode
c.
full-duplex mode d. asynchronous mode
34.
Operating system functions may include
a.
input/output control b. virtual storage
c.
multiprogramming d. all of the above
35.
Transmission of computerised data from one
location
to another is called
a. data
transfer b. data flow
c. data
communication d. datamanagement
36. Which
of the following items is not used in LAN
a.
computers b. modem
c. printer
d. cable
37. Which
is the device that converts compuer
output
into a form that can be transmitted over
a
telephone line
a.
teleport b. multiplexer
c.
concentrator d. modem
38. What
is the commonly used unit for measuring
the speed
of data transmission
a. bytes
per second b. bits per second
c. baud d.
either b or d
39. A
kilobyte also referred to as KB, is equal to
a. 1000
bytes b. 1024 bytes
c. 2048
bytes d. 512 bytes
40. Inputs
to your computer is accomplished using the
a. Screen
b. keyboard
c. printer
d. plotter
41. Which
of the following is not used as secondary
storage
a.
Semiconductor memory
b.
magnetic disks
c.
magnetic drums
d.
magnetic tapes
42. A
collection of wires that connects several device
is called
a. link b.
bus
c. cable
d. port
43. A
offline device is
a. a
device which is not connected to CPU
b. a device
which is connected to CPU
c. a
device which is in breakdown stage
d. None of
these
44. Which
of the following is the fastest
a. CPU
b.
magnetic tapes and disks
c. video
terminal
d.
sensors, mechanical controllers
45.
Memories in which any location can be reached
in a fixed
and short amount of time after
specifying
its address is called
a.
sequential access memory
b. random
access memory
c.
secondary memory
d. mass
storage
46. The
register which contains the data to be
written
into or read out of the addressed location
is known
as
a. index
register
b. memory
address register
c. memory
data register
d. program
counter
47. The
register which keeps track of the execution
of a
program and which contains the memory
address of
the next instruction to be executed
is known
as
a. index
register b. instruction register
c. memory
address register
d. program
counter
48. Which
of the following is used as storage
locations
both in the ALU and in the control
section of
a computer
a. accumalator
b. register
c. adder
d. decoder
49.
Accumulator is a
a.
hardwired unit b. sequential circuit
c. finite
state machine d. register
50. Non
volatility is an important advantage of
a. CCDs
b.
magnetic tapes and disks
c.
magnetic bubbles d. both b and c
51. Which
of the following memory is volatile
a. RAM b.
ROM
c. EPROM
d. PROM
52. The
memory which is programmed at the time
it is
manufactured is
a. ROM b.
RAM
c. PROM d.
EPROM
53. Which
memory is non volatile and may be
written
only once.
a. RAM b.
EE-PROM
c. EPROM
d. PROM
54. Which
of the following statements is wrong
a.
magnetic core memory, RAMs and ROMs
have
constant access time
b.
magnetic tape is non volatile
c.
semiconductor memories are used as mass
memory
medium
d. An
EPROM can be programmed, erased and
reprogrammed
by the user with an EPROM
programming
instrument
55. The
fastest type of memory is
a. tape
b.
semiconductor memory
c. disk d.
bubble memory
56. In
magnetic disks data is organized on the
platter in
a concentric sets or rings called
a. sector
b. track
c. head d.
block
57. When
we move from the outer most track to
the
innermost track in a magnetic disk, the
density
a.
increases b. decreases
c. remains
the same
d. either
remains constant or decreases
58. Which
of the following device can be used to
directly
input printed text
a. OCR b.
Mouse
c. MIC d.
Joystick
59. Which
device can draw continuous lines
a. daisy
wheel b. plotter
c. chain
printer d. impact printer
60. In
which storage device, recording is done by
burning
tiny pits on a circular disk
a. punched
cards b. floppy disk
c.
magnetic tape d. optical disk
61. Which
of the following printers uses light beam
and
electrostatically sensitive black powder
a. dot
matric printer b. daisy wheel printer
c. chain
printer d. laser printer
62. The
primary purpose of an operating system is
a. to make
the most efficient use of the
computer
hardware
b. to
allow people to use the computer
c. to keep
system programmers employed
d. to make
computers fast.
63. The
operating system manages
a. memory
b. processor
c. disk
and I/O devices d. all of the above
64.
Scheduling is
a.
allowing job to use the processor
b.
unrelated performance considerations
c. quiet
simple to implement, even on large main
frames
d. the
same regardless of the purpose of the system
65. Which
of the following translator program
converts
assembly language program to object
program
a.
assembler b. compiler
c.
macroprocessor d. linker
66.
Multiprogramming systems
a. are
easier to develop than single programming
systems
b. execute
each job faster
c. execute
more jobs in the same time period
d. use
only one large mainframe computer
67. What
device is used for entering x - y
cordinates
a. card
reader b. joystick
c.
keyboard d. all of the above
68. Impact
printers
a. strike
a ribbon against the paper to produce
character
images.
b. include
ink-jet and thermal devices
c. are
more expensive than laser printers
d. use
optical technology
69. Bar
codes stores information using
a. punched
holes b. dots
c. thick
and thin tines d. all of the above
70. How
many types of storage loops exist in
magnetic
bubble memory
a. 8 b. 4
c. 3 d. 2
71. In
comparison to the internal (main) memory,
tape or
disk memory is
a. slower
and more expensive
b. slower
and less expensive
c. faster
and more expensive
d. faster
and less expensive
72. One of
the main features that distinguish
microprocessor
from microcomputers is
a. words
are usually larger in microprocessors
b. words
are shorter in microprocessors
c.
microprocessor doesnot contain I/O devices
d.
computers are not fully integrated
73.
microprocessor with 'n' address lines is capable
of
addressing
a. 2n
locations b. 2(n + 1)locations
c. 2n locations
d. n2 locations
74. Which
technique is preferable for transferring
a large
amount of data to and from a memory in
a short
time
a. DMA b.
Interrupt driven I/O
c.
programmed I/O d. None of these
75.
Boolean expression for the output of X-NOR
(equivalence)
logic gate with inputs A and B is
a. AB AB b. ABAB
c. (A B) (A B) d. (A B) (A B)
76. The
binary representation 100110 is numerically
equivalent
to
a. the
decimal representation 46
b. the
octal representation 46
c. the
hexadecimal representation 46
d. the
binary representation 26
77. The
Boolean expression A.B A.B
A.B is
equivalent
to
a. A + B
b. A.B
c. A B d. A . B
78. The
greatest negative number which can be
stored in
a computer that has 8-bit wordlength
and uses
2's complement arithmetic is
a. -256 b.
-255 c. -128 d. -127
79. By
taking 2's complement again of the 2's
complement
of a binary, one gets
a. the 1's
complement b. the 2's complement
c. the
original number
d. the
sign magnitude form of the numbers
80. The
expression A(A + B) by writing the first term
A as A + )
the expression is best simplified as
a. A + AB
b. AB
c. A d. A
+ B
81. In the
sign magnitude representation, the
leading
bit
a. is a
part of the number itself
b. is unit
for positive numbers
c. is
always unit
d. stands
for the sign
82. Which
of the following is equivalent to the
Boolean
expression Y A
B B C C A
a. AB BCCA
b. (A B) (B C) (A C)
c. (A B)(B C)(C A)
d. (A B) (BC) (CA)
83. The
OSI reference model defines the function
for seven
layers of protocols
a.
including the user and communication
medium.
b. not
including the user or communication
medium
c.
including the communication medium but not the
user
d.
including the user but not the communication
medium
84. The
OSI reference model is
a.
worthless b. a protocol
c. not a
protocol d. None of these
85. A data
packet is a packet header together with
a. a
network layer
b. an
administrative layer
c. user
data d. a packet switch
86. The
application layer of the OSI model is the
a. seventh
layer b. sixth layer
c. fifth
layer d. fourth layer
87.
Working of the WAN generally involves
a.
satellite b. frame delay
c. ATM d.
user agent
88. Which
of the following technique provides
dedicated
communication channel between
two
stations.
a. switch
network b. circuit switching
c. packet
switching d. none of these
89.
End-to-end conncectivity is provided from
host-to-host
in
a. network
layer b. session layer
c. data
link layer d. transport layer
90. Base
band is
a.
transmission of signals without modulation
b. a
signal all of whose energy is contained
within a
finite frequency range.
c. the
simultaneous transmission of data to a
number of
stations
d. all of
the above
91. The
simultaneous transmission of data to a
number of
stations is known as
a. broad
cast b. bandwidth
c. Aloha
d. analog transmission
92. The
communication mode that supports data
in both
directions
a. simplex
b. half duplex
c. duplex
d. multiplex
93.
Modulation is the process of
a. sending
a file from one computer to another
computer
b.
converting digital signals to analog signals
c. converting
analog signals to digital signals
d. echoing
every character that is received
94. A
distributed network configuration in which
all
data/information pass through a central
computer
is
a. bus
network b. star network
c. duplex
d. multiplex
95. To connect
a computer with a device in the
same room,
you might be likely to use
a. a
coaxial cable b. a dedicated time
c. a
ground station d. all of the above
96.
Administrative supervision of database
activities
is the responsibility of the
a. data
base administrator
b. DP
Manager
c. DB
Manager
d. VP-DP
administrator
97. Which
of the following component of a
computer
system is the most important to a
data base
management system
a. mouse
b. high
resolution video display
c. printer
d. high
speed, large capacity disk
98. What
is the serious problem(s) of file
management
systems
a. data
redundancy b. difficult to update
c. program
dependence
d. All of
the above
99. Which
of the following contains complete
record of
all activity that affected the contents
of a
database during a certain period of time
a. master
file b. transaction file
c. report
d. query file
100. In a
database, related fields are grouped to form
a. record
b. file
c. bank d.
field group
101. A
table consists of
a. fields and
columns b. rows and columns
c. rows
and cells d. none of these
102. The
purpose of an index is to provide ........... to
the file
it is indexing
a.
strorage area b. access path
c. name d.
number
103. The
database environment has all of the
following
components execpt
a. users
b. separate files
c.
database d. database adinistrator
104. Which
of the following is an advantage of the
database
approach
a.
elimination of data redundancy
b. ability
to associate related data
c.
increased security
d. All of
the above
105. When
changes occur in a data item, if every file
which
contains that field should not be updated
then, it
leads to
a. data
redundancy b. data inconsistancy
c. data
security d. data loss
106. When
the same data field is stored more than
once in a
file, then it leads to
a. data
redundancy b. data inconsistancy
c. data
dependancy d. data independancy
107. Data
security threats include
a. privacy
invasion b. hardware failure
c.
fraudulent manipulation of data
d. all of
the above
108. Updating
a database means
a.
revising a file structure
b.
reorganizing the database
c.
modifying or adding records
d. all of
the above
109.
Firmware means
a.
software b. hardware
c.
software available on hardware
d. none of
these
110. For
each instructions of program in memory
the CPU
goes through a
a. decode
- fetch - execute sequence
b. execute
- store - decode sequence
c. fetch -
decode - execute sequence
d. fetch -
execute - decode sequence
111. Which
of the following is the ascending order
of data
hierarchy
a. bit -
byte - record - field - data base - file
b. bit -
byte - field - record - file - database
c. bit -
byte - file - field - record - database
d. bit -
record - byte - field - file - database
112. A
microcomputer consists of atleast an input
unit, an
output unit, microprocessor unit and a
a.
stabilizer b. memory unit
c. printer
d. network
113.
Magnetic tape can serve as
a. input
media
b. output
media
c.
secondary storage media
d. all of
the above
114. Super
computers are mainly useful for
a.
mathematical intensive scientific applications
b.
data-retrieval operations
c.
input-output intensive processing
d. all of
the above
115. Which
of the following storage is volatile
a.
semiconductor memory
b. floppy
disk
c. CD-ROM
d. core
memory
116. RAM
chips
a. allow
the computer to store data electronically
b. store
data indefinitely unless you delete it
c. are
secondary memory
d. all of
the above
117.
EEPROM is
a. easily
erasable b. non-erasable
c.
effectively erasable d. electrically erasable
118.
Multiprocessing
a. makes
the operating system simpler
b. allows
multiple processes to run simultaneously
c. is
completely understood by all major computer
vendors
d. allows
the same computer to have multiple
processors
119. How
many units in a single bus structure will
communicate
at a time
a. 1 b. 2
c. 3 d. 14
120.
Arithmetic logic unit
I. perform
arithmetic operations
II. store
data
III.
perform comparison
IV.
communicate with input devices of the
above the
correct one is
a. I only
b. II only
c. I and II only d. I and III only
