Chapter 2: Computer Hardware and Peripheral Devices (Set-9)
If a monitor shows “No signal,” which connector check is most important before changing any settings
A Update printer driver
B Clear browser cache
C Check HDMI/VGA cable
D Rename desktop files
A loose or damaged display cable is a very common cause of “No signal.” Checking cable connection and the correct input source on the monitor is the fastest first troubleshooting step.
Which port type is most suitable for connecting a laptop to a modern TV with both sound and video
A HDMI port
B RJ45 port
C PS/2 port
D SATA port
HDMI carries both digital video and audio through one cable, making it ideal for connecting laptops to TVs. RJ45 is for Ethernet, PS/2 is old input, and SATA is internal storage.
When connecting a desktop to a projector in an older classroom setup, which port is commonly used
A SATA port
B VGA port
C Audio jack
D RAM slot
Many older projectors accept VGA input for analog video. SATA is for storage, audio jack is for sound, and RAM slot is for memory modules.
Which connector is typically used for wired network connection and has 8 contacts
A RJ11 connector
B DVI connector
C Audio jack
D RJ45 connector
RJ45 is used for Ethernet LAN cables and typically has 8 contacts. RJ11 is used for telephone lines, DVI is display, and audio jack is for sound.
Which connector type mainly carries digital video and is common on many desktop monitors
A DVI connector
B SATA connector
C PS/2 connector
D RJ11 connector
DVI is designed for video signals and often provides digital display quality. SATA is for drives, PS/2 for old input devices, and RJ11 is telephone.
A phone can read a pen drive using which feature with an OTG adapter
A RAID support
B BIOS support
C USB OTG support
D VGA support
USB OTG allows a smartphone to act as a USB host to use devices like pen drives, keyboards, or mice through an OTG adapter. RAID and BIOS are unrelated.
Which port is most commonly used today to connect printers to computers by cable
A USB port
B VGA port
C DVI port
D PS/2 port
USB is the standard wired connection for printers and supports plug-and-play. VGA and DVI are display ports and PS/2 is for old keyboard/mouse connections.
Which cable type is commonly used inside a PC for data connection to SATA HDD or SATA SSD
A HDMI cable
B VGA cable
C Speaker cable
D SATA data cable
SATA data cables connect the motherboard to SATA drives for data transfer. HDMI/VGA carry display signals and speaker cables are for audio output, not storage data.
Which connector from SMPS provides power to SATA drives inside a desktop
A VGA connector
B RJ45 connector
C SATA power plug
D DVI connector
SATA power connectors provide DC power from the SMPS to HDDs and SSDs. VGA/DVI are video connectors and RJ45 is for networking, so they do not power drives.
Which audio connector is most commonly used for headphones on a desktop PC
A 3.5mm audio jack
B RJ45 connector
C SATA connector
D VGA connector
The 3.5mm audio jack is commonly used for headphones and speakers. RJ45 is for LAN, SATA is storage, and VGA is video output.
Which option best describes what a “device driver” does
A Stores backup files
B Speeds up internet
C Prints photos only
D Controls hardware operation
A driver is software that helps the operating system communicate with hardware devices. Without proper drivers, devices may not work or may run with limited features.
Which Windows tool helps you update, disable, or uninstall device drivers
A Device Manager
B File Explorer
C Paint tool
D Calculator
Device Manager displays installed hardware and driver details and allows troubleshooting actions like updating or uninstalling drivers. It is the standard Windows tool for driver management.
Which symbol usually indicates driver problems in Device Manager
A Green tick icon
B Blue folder icon
C Yellow warning icon
D Red underline
A yellow warning sign often indicates missing, corrupted, or incompatible drivers, or a resource issue. Installing the correct driver usually fixes the problem.
If a graphics driver is missing, which common issue is most likely seen
A Faster printing speed
B Low screen resolution
C More storage space
D Stronger Wi-Fi signal
Without a proper graphics driver, the OS may use a basic display driver with limited resolution and poor performance. Printing, storage, and Wi-Fi are unrelated to GPU drivers.
Why can a wrong driver sometimes stop a device from working even if hardware is fine
A Compatibility mismatch
B More disk free space
C Better cooling system
D Higher monitor size
Drivers must match the device model and OS version. Wrong drivers may fail to load or may control the hardware incorrectly, causing errors or device non-function.
Which is the safest source to download device drivers from
A Random file sharing
B Unknown email link
C Social media post
D Official manufacturer site
Official sites provide correct, tested drivers and reduce malware risk. Unknown links may contain wrong drivers or harmful software, causing security issues or system instability.
Which OS feature helps detect and configure many devices automatically when connected
A Disk defragment
B Screen capture
C Plug and play
D File encryption
Plug and play allows the system to detect devices and load suitable drivers automatically in many cases. This helps devices like USB mouse, keyboard, and printers work quickly.
A 64-bit Windows system generally requires which driver type for proper hardware support
A 64-bit drivers
B 16-bit drivers
C Text-only drivers
D BIOS-only drivers
A 64-bit OS needs 64-bit drivers to communicate properly with hardware. 32-bit drivers typically won’t install or function correctly on 64-bit Windows.
What is “firmware” in hardware devices like BIOS, SSD, and router
A Office document file
B Internal device software
C Internet browser app
D Temporary RAM data
Firmware is low-level software stored in hardware that controls device functions. Updating firmware can fix bugs and improve stability, but it must be done carefully to avoid failures.
Which feature provides backup power so a PC can be shut down safely during a power cut
A VGA splitter
B HDMI switch
C UPS device
D USB hub
A UPS provides short battery backup and protects from sudden shutdown. This helps avoid data corruption and gives time for safe shutdown. Splitters, switches, and hubs don’t provide backup power.
Which device mainly reduces voltage fluctuation damage to computer hardware
A Voltage stabilizer
B Barcode reader
C Microphone
D Plotter
A stabilizer regulates voltage to a safe level when supply is unstable. It helps protect SMPS and motherboard from damage due to over-voltage or under-voltage.
Which motherboard battery is responsible for keeping system time when power is off
A USB battery
B GPU battery
C Monitor battery
D CMOS battery
The CMOS battery powers the real-time clock and helps retain BIOS settings. If it is weak, the system time and settings may reset after shutdown or unplugging.
Which symptom most strongly suggests the CMOS battery is weak
A Mouse moves slow
B Printer prints light
C Time resets often
D Screen looks bright
A weak CMOS battery causes the clock to reset and BIOS settings to return to default after power loss. Mouse speed and printing quality usually relate to other causes.
Which basic action best reduces overheating risk in a dusty CPU cabinet
A Clean dust buildup
B Change desktop theme
C Rename user folder
D Increase brightness
Dust blocks airflow and reduces fan efficiency. Cleaning vents, fans, and heatsinks improves cooling and prevents thermal shutdowns or throttling during heavy use.
Which condition often causes thermal throttling in CPUs during heavy work
A Low font size
B High temperature
C Large desktop icons
D Dark wallpaper
Thermal throttling happens when CPU temperature rises too high, so the CPU reduces speed to protect itself. Cooling improvements reduce throttling and improve performance stability.
Which safety tool is best to prevent static electricity damage while repairing a PC
A Paper towel
B HDMI cable
C Anti-static wrist strap
D Mouse pad
An anti-static strap grounds the technician and prevents electrostatic discharge into sensitive parts like RAM and chipset. Static damage may not be visible but can cause failures later.
Which surface is safest for placing computer parts during repair to reduce static damage
A Anti-static mat
B Carpet floor
C Wool cloth
D Plastic sheet
An anti-static mat reduces static buildup and protects components. Carpets and wool can generate static. Plastic sheets may increase static charge and are not recommended.
Which cabinet design stands upright and usually offers better expansion space
A Flat cabinet
B Tablet body
C Scanner bed
D Tower cabinet
Tower cabinets are vertical and often have more room for extra drives, fans, and expansion cards. Flat cabinets have less expansion space and airflow options.
Motherboard sizes like ATX and microATX are known by which term
A Form factor
B Refresh rate
C Bit depth
D File format
Form factor defines motherboard dimensions and mounting points, affecting cabinet compatibility and available slots. It is a physical standard, not a display or file concept.
Which RAID level has no redundancy and fails completely if one drive fails
A RAID 1
B RAID 5
C RAID 0
D RAID 10
RAID 0 stripes data across drives for speed but provides no backup. If any drive fails, data is usually lost. RAID 1, 5, and 10 provide redundancy.
Which RAID level mirrors data on two drives for basic data safety
A RAID 0
B RAID 1
C RAID 3
D RAID 6
RAID 1 duplicates the same data on two drives. If one drive fails, the other can continue working, providing basic redundancy, though usable capacity is reduced.
Which printer type is most suitable for very fast office text printing
A Laser printer
B Inkjet printer
C Dot matrix
D Thermal printer
Laser printers print quickly with sharp text and low per-page cost for documents. Inkjet is good for photos, dot matrix for multi-part forms, and thermal for receipts.
Which printer type is most commonly used for receipt printing in billing machines
A Laser printer
B Inkjet printer
C Plotter
D Thermal printer
Thermal printers print using heat on special paper and are common in billing counters and ATMs. They are fast and require no ink, but prints may fade over time.
Which printer type is impact-based and can print multi-part forms
A Laser printer
B Inkjet printer
C Dot matrix
D Photo printer
Dot matrix printers use pins to strike an ink ribbon, making them impact printers. This allows printing carbon copies and multi-part forms, which most non-impact printers cannot do.
Which statement is correct about LED monitors in common market terms
A LCD with LED backlight
B CRT with LED tubes
C Plasma with ink
D OLED is always LCD
Most “LED monitors” are LCD panels that use LED backlighting. This improves efficiency and slim design compared to older CCFL backlights. They are not CRT or plasma displays.
Which display connector carries analog video and is common in older systems
A HDMI connector
B RJ45 connector
C SATA connector
D VGA connector
VGA transmits analog video and is commonly seen on older computers and monitors. HDMI is digital audio/video, RJ45 is network, and SATA is storage data.
Which connector is most commonly used for modern wired LAN networking
A RJ45 connector
B RJ11 connector
C VGA connector
D DVI connector
RJ45 is used for Ethernet LAN connections. RJ11 is phone line, while VGA and DVI are display connectors and do not provide network connectivity.
Which action is most helpful if a printer is detected but does not print due to driver issues
A Change monitor cable
B Clean keyboard keys
C Reinstall printer driver
D Replace mouse battery
A corrupted or wrong printer driver can block printing even if the printer is detected. Reinstalling the correct driver restores proper communication and enables full printing features.
Which step helps if a USB device is detected but frequently disconnects
A Change screen saver
B Update USB driver
C Decrease brightness
D Rename files
Updating drivers can fix stability bugs and compatibility issues. Also checking cable and port helps. Screen saver and brightness do not affect device connection stability.
Which port is used mainly for audio output, not for data networking
A Audio jack
B RJ45 port
C SATA port
D USB port
Audio jacks carry analog sound signals to speakers or headphones. RJ45 is networking, SATA is storage data, and USB is general-purpose data and power.
Which basic check is useful when Wi-Fi adapter is not showing networks on a desktop
A Change desktop icons
B Increase font size
C Delete pictures
D Reconnect Wi-Fi adapter
Reconnecting the adapter forces re-detection by the OS and can fix loose connections. If needed, try a different port and reinstall drivers. Visual settings and deleting files won’t help.
Which Windows feature helps safely disconnect a pen drive to reduce data corruption
A Disk defragment
B Screen rotate
C Safely remove hardware
D Driver rollback
Safely remove ensures pending write operations finish before unplugging. This prevents file corruption on USB storage devices, especially when copying files.
Which condition indicates a possible hardware resource conflict in Windows
A Device shows exclamation
B Wallpaper changes
C Cursor becomes large
D Speaker sounds loud
An exclamation mark in Device Manager can indicate driver problems or resource conflicts like IRQ issues. The OS may disable the device until the conflict is resolved.
Which connector is mainly used for telephone line connections
A RJ45 connector
B RJ11 connector
C HDMI connector
D USB connector
RJ11 connectors are used for telephone and DSL lines. RJ45 is used for Ethernet LAN networking, and HDMI/USB serve different purposes.
Which statement is correct about HDMI compared to VGA
A VGA carries audio
B HDMI is analog
C HDMI carries audio
D VGA is digital
HDMI carries both digital video and audio. VGA is analog video only and needs a separate audio cable. HDMI is not analog, and VGA is not digital.
Which is the safest action before opening a desktop cabinet to install an expansion card
A Power off and unplug
B Open YouTube video
C Increase speaker volume
D Change wallpaper
Turning off and unplugging prevents electrical shock and reduces the risk of short circuits. It protects the user and the components when installing cards or adding internal cables.
Which tool is used to regulate incoming voltage and protect computer components
A USB hub
B HDMI splitter
C DVI adapter
D Voltage stabilizer
A voltage stabilizer keeps the input voltage within a safe range, reducing risk of damage in areas with unstable electricity. It does not expand ports or split display signals.
Which connector type is mainly used for digital video output and often found on older GPUs
A DVI connector
B RJ11 connector
C SATA connector
D PS/2 connector
DVI is a common digital video connector used on many older PCs and GPUs. RJ11 is telephone, SATA is storage, and PS/2 is an old keyboard/mouse connector.
Which step is best if a device works after restart but fails again later due to driver corruption
A Increase monitor size
B Add desktop shortcuts
C Clean reinstall driver
D Change mouse speed
A clean driver reinstall removes corrupted files and installs a fresh correct version. This fixes repeated driver failures. Monitor size, shortcuts, and mouse speed do not repair drivers.
Which issue can cause a USB storage device to not appear in File Explorer even though it is connected
A Low speaker volume
B No drive letter
C Wrong wallpaper
D Printer offline
Sometimes a drive is detected but has no assigned drive letter, so it won’t appear in File Explorer. Disk Management can assign a letter or fix partition issues.