Computer Knowledge
Computer Hardware Devices
893 Questions
Computer Hardware Devices focuses on the physical components of a computer system, including input, output, and memory devices. It tests practical understanding of ports, displays, and peripheral technologies. This topic is common in the computer knowledge section of banking and SSC exams.
Input output devicesMonitor settingsComputer portsAssistive technologyHardware components
Computer Hardware Devices Questions
-
Floppy drive
-
Hard disk drive
-
Sound card
-
Video card
B
Correct answer
Explanation
EIDE (Enhanced Integrated Drive Electronics) cables connect motherboards to storage devices like hard disk drives. Floppy drives use FDD cables, while sound cards and video cards use different interface connections.
-
Office
-
Desk
-
Chair
-
In front of Computer
-
Video camera
-
Speaker
-
Microphone
-
All the above are built-in
-
Keyboard
-
CD
-
Mouse
-
Monitor
B
Correct answer
Explanation
CD is the odd one out. Keyboard, Mouse, and Monitor are all computer input/output devices that are essential components. A CD is a storage medium - not a peripheral device but rather a removable data carrier.
B
Correct answer
Explanation
The iPod touch was one of Apple's iPod models. The question appears to be testing recognition of Apple product lines and the 'touch' designation specifically belonged to the iPod family, not Mac, iTunes, or iPhone.
-
Floppy disk
-
Magnetic card reader
-
CRT
-
All of these
-
Joystick
-
Touch pad
-
Keyboard
-
Mouse
A
Correct answer
Explanation
The joystick was originally developed for controlling aircraft and was first used in aviation during World War I. It allowed pilots to maneuver aircraft more effectively than previous control mechanisms. Later, this technology was adapted for video games and computer interfaces.
-
How many times the screen saver starts.
-
How often you clean it
-
How often the screen’s image is redrawn
-
How many beverages you drink it while sitting in front of it
C
Correct answer
Explanation
Refresh rate is the number of times per second a display screen updates its image, measured in Hertz (Hz). A 60Hz monitor refreshes 60 times each second, showing 60 frames per second. Higher refresh rates result in smoother motion and reduced eye fatigue. The 'screen saver' option (A) is unrelated to refresh rate - it's a power-saving feature.
-
How many times the screen saver starts.
-
How often you clean it
-
How often the screen’s image is redrawn
-
How many beverages you drink it while sitting in front of it
C
Correct answer
Explanation
Refresh rate is the number of times per second a display screen updates its image, measured in Hertz (Hz). A 60Hz monitor refreshes 60 times each second, showing 60 frames per second. Higher refresh rates result in smoother motion and reduced eye fatigue. The 'screen saver' option (A) is unrelated to refresh rate - it's a power-saving feature.
-
Skimmer
-
Scammer
-
Scanner
-
Hammer
A
Correct answer
Explanation
A skimmer is a malicious device illegally attached to ATMs, card readers, or payment terminals to capture credit and debit card information. When a victim slides their card through the compromised reader, the skimmer records the card's magnetic strip data, which criminals then use to create counterfeit cards or make fraudulent purchases.
-
Keyboard
-
Mouse
-
ESC key
-
LCD monitor
B
Correct answer
Explanation
Douglas Engelbart invented the computer mouse in 1964 while working at Stanford Research Institute. It was patented in 1970 and revolutionized human-computer interaction by making personal computers much more accessible.
-
FastEthernet Measuring Device
-
Flashing Media Diode
-
Flash Media Driver
-
Fluorescent Multi-Layer Disc
D
Correct answer
Explanation
FMD (Fluorescent Multi-Layer Disc) was an optical disc format that used multiple fluorescent layers to achieve higher storage capacity than conventional DVDs. The technology relied on fluorescent materials rather than reflective layers like traditional optical media.
-
DLP (Digital light processing)
-
PD (Plasma display)
-
CRT (Cathode ray tube)
-
TFT (Thin-film transistor)
D
Correct answer
Explanation
LCD monitors are commonly referred to as TFT (Thin-Film Transistor) displays because TFT technology is used to improve image quality and response times in LCD panels. TFT is an active-matrix LCD technology. The other options are different display technologies: DLP uses micromirrors, Plasma uses gas cells, and CRT uses electron beams on phosphor coatings.
-
DLP (Digital light processing)
-
PD (Plasma display)
-
CRT (Cathode ray tube)
-
TFT (Thin-film transistor)
D
Correct answer
Explanation
LCD (Liquid Crystal Display) monitors commonly use Thin-Film Transistor (TFT) technology to improve image quality, such as addressability and contrast. While CRT and Plasma are different display technologies entirely, TFT is the specific active-matrix technology used in modern LCDs.
-
Extended Capabilities Port
-
Extra Compatible Part
-
Extended Connection Port
-
External Cordless Peripheral
A
Correct answer
Explanation
ECP stands for Extended Capabilities Port, a parallel port mode defined in IEEE 1284 standard that supports high-speed bidirectional communication. It's commonly used for connecting printers and other peripherals to computers. The other options with 'Part', 'Connection', and 'Peripheral' are fabricated expansions.