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ECAT Computer Science Online Test MCQs With Answers
Question # 1
The hexadecimal number system is widely used in analyzing and programming in.
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analog computers
binary computers
decimal computers
micro computers
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Question # 2
An arrangement in which data is transmitted in both directions at a time is called
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Simplex
Full duplex
Half duplex
Multi-duplex
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Question # 3
Communication between a computer and a keyboard involves
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Simplex
half-duplex
Full-duplex
automatic
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Question # 4
The device drive is an example of :
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Application software
System software
Freeware
Shareware
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Question # 5
Binary Coded decimal number express each decimal digit as
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binary digits
nibble
word
byte
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Question # 6
A disk pack withing a sealed data module is a.
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Backup unit
Winchester
diskette
CD-ROM
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Question # 7
Most mainframe computers are basically.
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4 bit machines
8 bit machines
32 bit machines
16 bit machines
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Question # 8
Maximum length of co-axial cable used in LAN is
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120 meter
110 meter
100 meter
90 meter
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Question # 9
Word is 16 bits is
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65536
64526
32526
34526
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Question # 10
Testing of each individual program or module is called.
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program testing
volume testing
system testing
unit testing
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Question # 11
Laser beam technology is used in one of the following
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Monitors
Magnetic Disk
Optical Disks
Mouse
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Question # 12
The signal that the computer is awaiting a command from the user
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prompt
time slice
event
interrupt
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Question # 13
In a computer system,which of the following has largest number of mechanical components and thus most unreliable :
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magnetic disk
magnetic drum
floppy disk
printer
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Question # 14
Which of the following is not a category of network problems.
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Newsgroup problems
Physical problems
Electrical problems
Viruses
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Question # 15
The _____________ is the physical path over which the message travels :
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Protocol
Medium
Signal
All of the above
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Question # 16
A digital computer system consists of a central processing unit (CPU) interfaced with.
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input devices
auxilary storage
output devices
all of the above
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Question # 17
A computer that accepts handwritten input on a screen.
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minicomputer
desktop computer
mainframe
pen-based computer
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Question # 18
A bit can be
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1 and 0
1 or 0
1 only
0 only
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Question # 19
Data is represented on a computer by means of a two-state on/off system called
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the octal system
the binary system
a word
ROM
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Question # 20
Scheduling deadlines and milestones can be shown on a.
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system survey
decision table
prototype
Gantt chart
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Question # 21
Data transmission speed of wire pair is
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9600 bps
9500 bps
3600 bps
3500 bps
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Question # 22
126
8
+ 425
8
= __________
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111101011
2
101101001
2
101101011
2
101100011
2
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Question # 23
The transfer of data from one place to another is called
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Data processing
Data distribution
Data communication
Data encryption
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Question # 24
A systems analyst would observe the flow of data and interrelations of people within an organization during.
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detail design
preliminary design
systems analysis
a system survey
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Question # 25
In EBCDIC (extended binary coded decimal interchange code) each character is denoted by
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3 bits
4 bits
5 bits
8 bits
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Question # 26
The lowest level of programming language is
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nonprocedural language
assembly language
BASIC
machine language
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Question # 27
A computer has very high speed, accuracy and reliability . Its intelligent quotient could be of the order of
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0
10
15
20
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Question # 28
During the development of a program, drawing a flowchart is a means to
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plan the solution
code the program
define the problem
document the problem
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Question # 29
An emerging technology that provides nonvolatile memory chips is.
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flash memory
PROM
CMOS
CISC
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Question # 30
A bootstrap is.
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a memory device
a device to support the computer
a small initialization program to start up a computer
an error correction technique
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Question # 31
Communication between a computer and keyboard involes __________ transmission.
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Half duplex
Full-duplex
Simplex
Automatic
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