Chapter 2: Computer Hardware and Peripheral Devices (Set-3)
Which CPU part mainly manages the flow of data and instructions between memory, ALU, and I/O during processing
A Hard disk
B USB port
C Inkjet head
D Control unit
The control unit coordinates instruction execution by controlling signals between CPU parts, memory, and input/output. It does not do calculations like ALU, and it is not a storage device or port.
Which feature on a motherboard decides how many and what type of expansion cards can be installed
A Heat sink
B SMPS fan
C Expansion slots
D CMOS battery
Expansion slots like PCIe allow adding graphics, network, or sound cards. The number and type of slots limit upgrade options. Heat sinks cool chips, SMPS fan cools power supply, CMOS battery stores settings.
If a PC boots but frequently restarts under load, which basic hardware issue is a common cause
A Overheating issue
B Wrong keyboard
C Small monitor
D Old mouse pad
When CPU or GPU temperatures rise too high, the system may shut down or restart to protect hardware. Causes include dust, failed fan, poor airflow, or dried thermal paste.
Which internal component protects a desktop from sudden power loss by giving a few minutes of backup time
A VGA cable
B UPS device
C SATA port
D DVI plug
A UPS provides battery backup power for a short time, allowing safe shutdown and reducing risk of data corruption. Cables and ports only connect devices; they do not supply backup power.
Which type of connector is mainly used to connect headphones to a laptop for listening audio
A RJ45 port
B SATA port
C Audio jack
D VGA port
The audio jack is designed for analog sound output to headphones or speakers and sometimes input for microphones. RJ45 is for Ethernet, SATA is for storage, and VGA is for video output.
What is the most accurate meaning of “device driver” in a computer
A Hardware control software
B Data backup tool
C Screen recording app
D Antivirus database
A driver is software that enables the operating system to communicate with a hardware device and use its features properly. Without correct drivers, hardware may not work or may work partially.
When Windows cannot recognize a newly attached device, which basic feature normally helps detect it automatically
A File compression
B Disk cleanup
C Plug and play
D Screen saver
Plug and play helps the OS detect new hardware, allocate resources, and load drivers automatically. Compression and cleanup manage storage, while screen saver is a display function.
Which internal storage is used to hold frequently accessed CPU data so processing becomes faster
A Cache memory
B Optical disk
C Pen drive
D External HDD
Cache is very fast memory that stores frequently used data and instructions close to the CPU. This reduces waiting time compared to RAM. External and optical storage are far slower.
Which storage device uses spinning magnetic platters and mechanical heads to read and write data
A SSD drive
B HDD drive
C RAM memory
D ROM chip
Hard disk drives store data magnetically on rotating platters with moving read/write heads. SSDs have no moving parts and use flash memory. RAM and ROM are memory types, not mechanical drives.
In a computer, which unit is commonly used to measure file size like photos and apps
A Volt unit
B Hertz unit
C Megabyte unit
D Ampere unit
Megabytes are commonly used to measure file sizes of images, apps, and documents. Volt, hertz, and ampere measure electrical and frequency properties, not storage size.
Which type of printer is generally best for sharp text and fast printing in offices
A Laser printer
B Barcode reader
C Webcam device
D Joystick device
Laser printers use toner and a drum to print quickly with crisp text, making them ideal for office documents. Barcode readers scan codes, webcams capture video, and joysticks are input devices.
Which output device is mainly used to produce sound from a computer during videos or music
A Mouse device
B Scanner device
C Keyboard device
D Speaker device
Speakers convert electrical audio signals into sound waves. Mouse, scanner, and keyboard provide input. Sound output needs speakers or headphones, not input peripherals.
Which device is mainly used to capture and input printed documents into the computer as digital files
A Plotter device
B Projector device
C Scanner device
D Monitor device
A scanner converts paper documents and images into digital form like PDF or image files. Plotters and projectors are output devices, and monitors display information.
Which connector is most commonly used for wired LAN internet connection on a desktop
A HDMI connector
B RJ45 connector
C Audio jack
D VGA connector
RJ45 is the standard connector used with Ethernet cables for LAN and internet. HDMI and VGA connect displays, while audio jack connects sound devices.
For connecting a modern monitor with both video and audio, which port is most commonly used
A HDMI port
B SATA port
C RJ11 port
D PS/2 port
HDMI carries digital video and audio in a single cable, common for monitors and TVs. SATA is for storage, RJ11 is telephone, and PS/2 is an older keyboard/mouse connector.
Which port is commonly used to connect many devices like pen drives, keyboards, and printers
A DVI port
B VGA port
C USB port
D SATA port
USB is a universal interface for many peripherals and supports plug-and-play. DVI and VGA are display ports, while SATA is an internal storage interface.
Which connector is mainly used for older monitors and sends analog video signals
A VGA connector
B RJ45 connector
C SATA connector
D USB connector
VGA is an analog video connector common on older PCs and monitors. RJ45 is for networking, SATA is for internal storage, and USB is for peripherals.
Which connector type is mainly used for internal storage data connection between motherboard and drive
A HDMI connector
B Audio jack
C SATA connector
D RJ11 connector
SATA connects internal HDDs and SSDs to the motherboard for data transfer. HDMI is for video/audio, audio jack is for sound, and RJ11 is for phone lines.
Which device allows wireless short-range file transfer between phone and laptop without internet
A VGA cable
B Bluetooth
C DVI cable
D SATA cable
Bluetooth provides short-range wireless communication for file transfer, audio devices, and peripherals. VGA/DVI are display cables and SATA is for internal storage connections, not wireless transfer.
If a desktop has no built-in Wi-Fi, which device can add wireless connectivity easily
A Heat sink
B CMOS battery
C Printer spool
D Wi-Fi adapter
A Wi-Fi adapter, often USB-based, adds wireless networking capability to desktops. Heat sinks cool components, CMOS batteries keep settings, and print spool is a software service.
Which tool in Windows helps you check whether a device driver is working properly
A Notepad app
B Paint tool
C Device Manager
D Calculator app
Device Manager lists hardware devices, shows errors, and allows updating or rolling back drivers. Notepad, Paint, and Calculator are basic apps and do not manage hardware drivers.
Which situation best suggests that a missing driver is causing a hardware problem
A Device shows warning
B Mouse moves fast
C Monitor looks bright
D Keyboard feels soft
A warning symbol in Device Manager often indicates missing, wrong, or corrupted drivers. It can cause devices to not function properly. Mouse speed and brightness are settings, not driver proof.
Which update is mainly done to fix bugs or add support at the hardware firmware level
A File rename
B Firmware update
C Folder copy
D Screen rotate
Firmware updates improve device internal software, such as motherboard BIOS/UEFI, SSD firmware, or router firmware. It can fix stability issues and improve compatibility, unlike file or screen actions.
Why is it important to install the correct chipset driver on a motherboard in many cases
A Better device communication
B More printer ink
C Bigger screen view
D Faster typing speed
Chipset drivers help the OS properly communicate with motherboard controllers for USB, storage, and other interfaces. Without them, some devices may not work optimally. Ink, screen size, and typing speed are unrelated.
Which is a correct statement about 64-bit operating systems and drivers
A Uses VGA only
B Disables BIOS
C Needs 64-bit drivers
D Removes cache
A 64-bit OS typically requires 64-bit drivers for proper hardware support. Driver mismatch can cause device failures. VGA, BIOS, and cache are unrelated to OS driver architecture.
Which device is used mainly for printing large maps and engineering designs on big paper
A Dot matrix
B Speaker device
C Mouse device
D Plotter device
Plotters create large, high-precision drawings like blueprints and maps. Dot matrix is used for forms, speakers output sound, and mouse is for pointing input.
What is the main advantage of an SSD over an HDD in daily computer use
A Faster access speed
B Uses more noise
C Needs ink toner
D Needs laser light
SSDs have much lower access time and faster read/write speeds, improving boot time and app loading. They have no moving parts, unlike HDDs, which can be slower and noisier.
In a typical desktop, what is the purpose of the SMPS fan
A Store BIOS settings
B Increase Wi-Fi range
C Cool power supply
D Print faster pages
The SMPS fan removes heat from the power supply unit to maintain stable operation and prevent overheating. BIOS settings are stored via CMOS/firmware, and Wi-Fi/printing are unrelated.
Which component is most responsible for keeping BIOS settings like boot order when the power is off
A USB hub
B CMOS battery
C HDMI cable
D Monitor stand
The CMOS battery powers the real-time clock and helps preserve BIOS/UEFI settings when the system is unplugged. Other listed items do not store or maintain motherboard settings.
Which action is safest before replacing RAM or adding a new internal card in a PC
A Play video
B Increase volume
C Unplug power cable
D Open browser
Unplugging power prevents electric shock and avoids damaging components during installation. It also reduces risk of short circuits. Software actions like playing video or browsing are irrelevant to hardware safety.
Which ESD protection practice best reduces static damage risk while handling RAM sticks
A Use wrist strap
B Use loud speakers
C Use bright monitor
D Use printer ink
An anti-static wrist strap grounds the body and prevents static discharge into sensitive components like RAM and motherboard chips. Static damage can be invisible but harmful. Audio and display settings do not help.
Which maintenance step helps airflow and reduces heating in desktop computers over time
A Change file names
B Clean dust regularly
C Add desktop icons
D Increase screen zoom
Dust blocks vents and fans, reducing cooling efficiency and increasing temperatures. Regular cleaning improves airflow and component life. File names, icons, and zoom settings do not affect cooling.
Which memory type usually stores firmware instructions permanently and is non-volatile
A RAM memory
B Cache memory
C ROM memory
D Register memory
ROM keeps data without power and is used for firmware storage. RAM and cache lose data when power is off, and registers are temporary CPU storage during processing.
What does “hot plugging” mean for many USB devices in modern systems
A Delete files quickly
B Print without paper
C Reduce CPU heat
D Connect while running
Hot plugging allows connecting or removing devices while the system is on. USB supports this feature widely, and the OS detects devices automatically. It is unrelated to printing, file deletion, or cooling.
Which device is an output device that displays text and images for user interaction
A Monitor device
B Webcam device
C Scanner device
D Microphone device
A monitor shows the graphical output of the computer, including text, images, and video. Webcam, scanner, and microphone are input devices used to send data into the computer.
If the screen shows “No signal” but the CPU is running, which basic check is most relevant first
A Format hard disk
B Install antivirus
C Check display cable
D Delete cache files
A loose or damaged HDMI/VGA/DVI cable can stop the monitor from receiving video signal. Checking cable and input source is the first step. Disk formatting and antivirus do not fix display signal issues.
Which is the most common reason to use a voltage stabilizer with a desktop in some locations
A Control voltage fluctuation
B Improve internet speed
C Increase RAM size
D Reduce printer noise
A stabilizer protects devices from over-voltage and under-voltage conditions that can damage SMPS or components. It does not affect internet speed, RAM capacity, or printer noise.
Which device is most suitable for capturing voice clearly during online classes
A Projector device
B Plotter device
C VGA adapter
D Microphone device
A microphone converts sound into digital input for calls and recordings. Projectors and plotters are output devices, and VGA adapters are for video signals, not audio input.
Which connector is mainly used to connect a keyboard and mouse in very old desktop PCs
A HDMI port
B PS/2 port
C RJ45 port
D SATA port
PS/2 ports were traditionally used for keyboards and mice on older PCs. HDMI is for display, RJ45 is networking, and SATA is for internal storage devices.
What is the common purpose of a “USB hub” in everyday computer use
A Add more USB ports
B Increase hard drive speed
C Replace motherboard chipset
D Store BIOS settings
A USB hub expands one USB port into multiple ports to connect more devices. It does not speed up internal drives, replace chipset hardware, or store BIOS settings.
Which term describes the standard size/layout of a motherboard like ATX or microATX
A Screen resolution
B File extension
C Form factor
D Print queue
Form factor defines motherboard dimensions, mounting points, and layout. It determines cabinet compatibility and expansion options. Resolution relates to display, file extension to documents, and print queue to printing tasks.
Which is a correct basic difference between inkjet and laser printers
A Ink uses liquid
B Laser uses liquid
C Both use toner
D Both are impact
Inkjet printers use liquid ink sprayed through nozzles, often good for photos. Laser printers use toner powder and a drum for fast text printing. Neither is impact like dot matrix.
In RAID, what is the main general purpose of combining multiple drives together
A Better keyboard feel
B Speed or safety
C Brighter monitor
D Quieter speakers
RAID can improve performance, provide redundancy, or both depending on RAID level. It is a storage management method. It does not change how peripherals like keyboard, monitor, or speakers behave.
Which internal component holds RAM modules firmly and provides electrical connection to the motherboard
A VGA port
B RJ45 jack
C RAM slot
D DVI plug
RAM slots (DIMM slots) are designed to fit memory modules securely and connect them electrically. VGA, RJ45, and DVI are external connectors for video or network, not memory installation.
Which device is best for scanning codes quickly at a billing counter
A Barcode reader
B Dot matrix
C UPS device
D Heat sink
Barcode readers scan printed barcodes and send the decoded number to the computer instantly. Dot matrix is a printer, UPS provides power backup, and heat sink is a cooling component.
Which output device is best for showing presentations to a classroom without printing
A Laser printer
B Inkjet printer
C Plotter device
D Projector device
A projector displays the computer’s screen to a large audience, ideal for teaching and presentations. Printers and plotters create paper output, which is not needed for classroom display.
What is the basic meaning of “BIOS” in a traditional PC
A Antivirus program
B Startup firmware
C Internet browser
D Audio driver
BIOS is firmware that initializes hardware during startup and starts the boot process. It runs before the operating system loads. It is not an antivirus, browser, or regular device driver.
Which storage device is most suitable for sharing files among many users in an office network
A NAS storage
B DVD disk
C Floppy disk
D Cache chip
NAS provides shared network storage accessible by many users with permissions and backups. DVDs and floppies are removable media for small storage, and cache chips are internal performance memory.
If a USB device is recognized but not working correctly, which driver-related step is most useful first
A Change screen saver
B Increase brightness
C Update the driver
D Rename the folder
Updating the driver can fix bugs, improve compatibility, and restore proper device function. Display settings and file renaming do not affect hardware communication or device behavior.
Which safety practice helps avoid accidental electric shock while working inside a desktop
A Use long HDMI
B Use loud speaker
C Use new mouse
D Remove power plug
Unplugging the computer removes live power and reduces risk of shock and short circuits. It is a basic safety step before changing internal components like RAM, drives, or expansion cards.