Question 1 of 81Introduction to Information Technology
Who is regarded as the 'Father of the Computer'?
AAlan Turing
BCharles Babbage
CJohn von Neumann
DBlaise Pascal
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Question 2 of 81Introduction to Information Technology
Which characteristic means a computer performs repetitive tasks without fatigue?
AAccuracy
BVersatility
CDiligence
DAutomation
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Question 3 of 81Introduction to Information Technology
The stored-program concept was introduced with which machine?
AENIAC
BEDVAC
CAbacus
DPascaline
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Question 4 of 81Introduction to Information Technology
Which unit of the CPU performs arithmetic and logical operations?
AControl Unit
BALU
CRegister
DInput Unit
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Question 5 of 81Introduction to Information Technology
Second-generation computers used which technology?
AVacuum tubes
BTransistors
CIntegrated Circuits
DMicroprocessors
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Question 6 of 81Introduction to Information Technology
Which type of computer combines features of analog and digital computers?
AMainframe
BMinicomputer
CHybrid computer
DSupercomputer
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Question 7 of 81Introduction to Information Technology
Which is the fastest and most powerful category of computer?
AMicrocomputer
BMinicomputer
CMainframe
DSupercomputer
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Question 8 of 81Introduction to Information Technology
Integrated Circuits (ICs) characterize which generation of computers?
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Question 9 of 81Introduction to Information Technology
A computer is said to have 'no IQ' because it:
ACannot store data
BOnly executes given instructions
CCannot perform arithmetic
DWorks only with numbers
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Question 10 of 81Introduction to Information Technology
Which unit directs and coordinates the operations of all other units?
AALU
BMemory Unit
CControl Unit
DOutput Unit
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Question 11 of 81Storage system
Which type of memory loses its content when power is switched off?
AROM
BRAM
CEEPROM
DFlash memory
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Question 12 of 81Storage system
Which ROM type is erased using ultraviolet light?
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Question 13 of 81Storage system
Magnetic tape is an example of which access method?
ADirect access
BRandom access
CSequential access
DIndexed access
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Question 14 of 81Storage system
Which storage device uses a laser beam to read and write data?
AHard disk
BMagnetic tape
COptical disk (CD/DVD)
DRAM
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Question 15 of 81Storage system
Which of the following is non-volatile memory?
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Question 16 of 81Storage system
AOnly once, mechanically
BUsing ultraviolet light
CElectrically, byte-by-byte
DBy formatting the hard disk
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Question 17 of 81Storage system
A hard disk provides which type of data access?
ASequential access only
BDirect/Random access
CTape access
DWrite-once access
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Question 18 of 81Storage system
Which device is a solid-state secondary storage device with no moving parts?
AMagnetic tape
BHard disk
CFlash/USB drive
DZip drive
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Question 19 of 81Storage system
APrimary Read Only Memory
BProgrammable Read Only Memory
CProtected Read Only Memory
DProcess Read Only Memory
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Question 20 of 81Storage system
Compared to secondary storage, primary storage is generally:
ASlower and cheaper
BFaster and more expensive per byte
CNon-volatile and huge in capacity
DOnly used for backups
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Question 21 of 81Software
Which of the following is an example of system software?
AMS Word
BOperating System
CMS Excel
DPhotoshop
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Question 22 of 81Software
Which programming language level uses only 0s and 1s?
AHigh-level language
BAssembly language
CMachine language
DFourth-generation language
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Question 23 of 81Software
Assembly language programs require which translator to run?
ACompiler
BInterpreter
CAssembler
DLinker only
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Question 24 of 81Software
Which is the main advantage of a high-level language?
AFastest execution speed
BDirectly understood by hardware
CEasy to write, read, and machine-independent
DNo need for translation
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Question 25 of 81Software
Which software category includes antivirus and disk cleanup tools?
AApplication software
BUtility programs
CPresentation software
DDBMS software
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Question 26 of 81Software
Which application software is used to organize data in rows and columns with formulas?
AWord processor
BSpreadsheet
CPresentation software
DGraphics software
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Question 27 of 81Software
A translator that converts an entire high-level program into machine code before execution is a:
ACompiler
BInterpreter
CAssembler
DLinker
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Question 28 of 81Software
Which is an example of DBMS software?
AMS PowerPoint
BMS Paint
COracle
DNotepad
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Question 29 of 81Software
Software that instructs hardware and provides a platform for other programs to run is called:
AApplication software
BOperating System
CUtility software
DFirmware
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Question 30 of 81Software
Which is a disadvantage of machine language?
AIt runs slowly
BIt needs a compiler
CIt is very hard to write and debug
DIt is machine-independent
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Question 31 of 81Computer networks
How many layers does the OSI reference model have?
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Question 32 of 81Computer networks
Which OSI layer is responsible for logical addressing and routing?
AData Link
BNetwork
CTransport
DSession
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Question 33 of 81Computer networks
The TCP/IP model condenses the OSI model into how many layers?
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Question 34 of 81Computer networks
Which device forwards data based only on broadcasting to all ports, with no intelligence?
ASwitch
BRouter
CHub
DBridge
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Question 35 of 81Computer networks
A Router operates at which layer of the OSI model?
APhysical
BData Link
CNetwork
DTransport
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Question 36 of 81Computer networks
Which of the following is a guided transmission medium?
ARadio waves
BMicrowaves
CFiber-optic cable
DInfrared
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Question 37 of 81Computer networks
A firewall is primarily used to:
AIncrease internet speed
BFilter network traffic for security
CConvert digital signals to analog
DStore backup data
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Question 38 of 81Computer networks
In asymmetric cryptography, encryption and decryption use:
AThe same single key
BA public key and a private key pair
CNo key at all
DOnly a private key
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Question 39 of 81Computer networks
Which OSI layer deals with framing and MAC addressing?
APhysical
BData Link
CNetwork
DApplication
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Question 40 of 81Computer networks
A Denial of Service (DoS) attack primarily aims to:
ASteal encryption keys
BMake a service unavailable to legitimate users
CPhysically damage hardware
DSpeed up network traffic
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Question 41 of 81Data communication
Which communication mode allows data to flow in both directions but not simultaneously?
ASimplex
BHalf-duplex
CFull-duplex
DBroadcast
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Question 42 of 81Data communication
A modem's main function is to:
AAmplify digital signals only
BConvert digital signals to analog and back
CStore network data
DFilter viruses
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Question 43 of 81Data communication
Which network type covers an area as large as a country or continent?
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Question 44 of 81Data communication
In which LAN topology are all devices connected to a single central cable?
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Question 45 of 81Data communication
Which topology becomes completely non-functional if the central hub fails?
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Question 46 of 81Data communication
A telephone conversation is an example of which communication mode?
ASimplex
BHalf-duplex
CFull-duplex
DNone of these
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Question 47 of 81Data communication
Which topology connects every node to every other node directly?
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Question 48 of 81Data communication
Bandwidth of a communication channel refers to:
AThe physical length of the cable
BIts maximum data-carrying capacity/frequency range
CThe number of computers connected
DThe cost of the medium
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Question 49 of 81Data communication
FTP is a protocol primarily used for:
ASending email
BTransferring files between computers
CBrowsing web pages
DVideo conferencing
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Question 50 of 81Data communication
A PAN (Personal Area Network) typically covers:
AA whole city
BA country
CA few meters around a single person
DA continent
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Question 51 of 81Business data processing
In the data storage hierarchy, which is the smallest unit?
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Question 52 of 81Business data processing
A group of 8 bits is commonly called a:
AField
BByte
CRecord
DNibble
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Question 53 of 81Business data processing
A group of related fields is called a:
AFile
BRecord
CDatabase
DByte
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Question 54 of 81Business data processing
Which file holds relatively permanent data that is updated periodically?
ATransaction file
BReport file
CMaster file
DSort file
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Question 55 of 81Business data processing
Which data organization method allows both sequential and direct access using an index?
ASequential organization
BDirect/Random organization
CIndexed Sequential organization (ISAM)
DHierarchical organization
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Question 56 of 81Business data processing
Which file type contains day-to-day data used to update the master file?
ABackup file
BTransaction file
CSort file
DMaster file
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Question 57 of 81Business data processing
A group of related records is called a:
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Question 58 of 81Business data processing
Which file utility combines two sorted files into one sorted file?
ACopy
BMerge
CRename
DCompress
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Question 59 of 81Business data processing
A backup file is primarily used for:
AFaster processing
BRecovery in case the original file is lost or damaged
CReducing file size
DSorting records
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Question 60 of 81Business data processing
Which data organization method offers the fastest access to any individual record?
ASequential organization
BDirect/Random organization
CTape-based organization
DBackup organization
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Question 61 of 81Basic Electrical & Electronics
When a cylinder is unrolled (opened in rope form), what shape is formed?
AInvolute
BHelix
CCycloid
DRectangle
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Question 62 of 81Basic Electrical & Electronics
How many transistors does a class B push-pull amplifier use?
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Question 63 of 81Basic Electrical & Electronics
In which region does a class B amplifier operate?
ASaturation
BCut-off
CActive
DLinear
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Question 64 of 81Basic Electrical & Electronics
Which quantity remains constant (same) throughout a series circuit?
AVoltage
BCurrent
CResistance
DPower
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Question 65 of 81Basic Electrical & Electronics
In a star (Y) connected three-phase system, what is the relationship between line voltage (Vₗ) and phase voltage (Vₚₕ)?
AVₗ = Vₚₕ
BVₗ = √3 × Vₚₕ
CVₗ = Vₚₕ / √3
DVₗ = 3 × Vₚₕ
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Question 66 of 81Basic Electrical & Electronics
What is the primary advantage of CMOS logic technology?
AHighest switching speed
BMinimum power consumption
CHighest noise margin
DMaximum fan-out
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Question 67 of 81Basic Electrical & Electronics
What type of feedback do oscillators use to sustain oscillations?
ANegative
BPositive
CZero
DMixed
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Question 68 of 81Basic Electrical & Electronics
Which theorem gives the condition for maximum power transfer from a source to a load?
ANorton's Theorem
BThevenin's Theorem
CMaximum Power Transfer Theorem
DSuperposition Theorem
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Question 69 of 81Basic Electrical & Electronics
According to Ohm's Law, which relationship is correct?
ACurrent = Voltage / Resistance
BResistance = Voltage × Current
CVoltage = Current / Resistance
DPower = Voltage + Current
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Question 70 of 81Basic Electrical & Electronics
Three equal resistors in series dissipate 10 W. How much power do they dissipate when connected in parallel (same supply voltage)?
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Question 71 of 81Basic Electrical & Electronics
A semiconductor is primarily used for:
AStoring electrical energy
BConverting AC to DC
CControlling electrical current
DAmplifying magnetic fields
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Question 72 of 81Basic Electrical & Electronics
Two copper wires of the same length have cross-sectional area ratio 1 : 4. What is the ratio of their resistances (small : large)?
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Question 73 of 81Basic Electrical & Electronics
A wire has resistance 40 Ω. Another wire of the same length has 4× the cross-sectional area. What is the resistance of the second wire?
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Question 74 of 81Basic Electrical & Electronics
The Superposition Theorem is NOT applicable to which type of circuit analysis?
APower calculations
BVoltage calculations
CCurrent calculations
DResistive circuits
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Question 75 of 81Basic Electrical & Electronics
The current through a capacitor is known as:
AConduction current
BLeakage current
CDisplacement current
DEddy current
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Question 76 of 81Basic Electrical & Electronics
A bridge rectifier operating at 50 Hz produces an output of:
A50 Hz pulsating DC
B100 Hz pulsating DC
C25 Hz pulsating DC
DPure DC
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Question 77 of 81Basic Electrical & Electronics
An inductor and resistor are connected in series and a DC voltage V is applied. At steady state, what is the current?
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Question 78 of 81Basic Electrical & Electronics
Three resistors each of 2 Ω are connected in delta. What is the equivalent resistance between any two terminals?
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Question 79 of 81Basic Electrical & Electronics
A 1 Ω resistor is connected in parallel with a 3 Ω resistor. What is the equivalent resistance?
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Question 80 of 81Basic Electrical & Electronics
What is the Standing Wave Ratio (SWR) when the reflection coefficient is 0.8?
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Question 81 of 81Basic Electrical & Electronics
A transmission line has Z₀ = 50 Ω and termination impedance Za = 75 Ω. What is the SWR and reflection coefficient?
ASWR = 1.5, RC = 0.2
BSWR = 2.5, RC = 0.4
CSWR = 1.5, RC = 0.5
DSWR = 3, RC = 0.6
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