Computer Knowledge

Computer Hardware Devices

1,004 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

Multiple choice

Which of the following is an example of high-tech assistive technology?

  1. Adapted scissors

  2. Speech-generating devices

  3. Computer-aided instruction (CAI) software

  4. Braille displays
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

High-tech assistive technology refers to advanced electronic devices and software that are specifically designed to meet the needs of students with disabilities. Computer-aided instruction (CAI) software is an example of high-tech assistive technology that can provide individualized instruction and support to students with disabilities.

Multiple choice

Which of the following is a common resolution for a digital art display?

  1. 72 DPI

  2. 150 DPI

  3. 300 DPI

  4. 600 DPI
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

72 DPI is a common resolution for a digital art display because it is the resolution that most computer monitors use.

Multiple choice

What type of display is commonly used in smart shoes?

  1. LED

  2. OLED

  3. LCD

  4. E-ink
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

LED (light-emitting diode) displays are commonly used in smart shoes due to their low power consumption and high brightness.

Multiple choice

What is the primary function of a Media Center PC?

  1. Playing video games

  2. Storing and organizing media files

  3. Browsing the internet

  4. Creating presentations
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A Media Center PC is a computer designed specifically for managing and playing media files, such as videos, music, and photos.

Multiple choice

Which technology is commonly used for wireless connectivity in Media Center PCs?

  1. Bluetooth

  2. Wi-Fi

  3. Cellular data

  4. Infrared
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wi-Fi is the most common technology used for wireless connectivity in Media Center PCs, allowing them to connect to the internet and other devices wirelessly.

Multiple choice

Which type of sensor is used to measure the distance between an autonomous vehicle and other objects?

  1. Radar

  2. Lidar

  3. Camera

  4. Ultrasonic
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Radar (Radio Detection and Ranging) is commonly used to measure the distance between an autonomous vehicle and other objects. It emits radio waves and measures the time it takes for the waves to reflect back, providing information about the distance and relative velocity of nearby objects.

Multiple choice

What is the purpose of using multiple sensors in autonomous vehicles?

  1. Redundancy and reliability

  2. Increased field of view

  3. Improved accuracy and precision

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Using multiple sensors in autonomous vehicles provides redundancy and reliability, increases the field of view, and improves the accuracy and precision of perception. By combining data from different sensors, autonomous vehicles can create a more comprehensive and accurate understanding of their surroundings.

Multiple choice

Which type of sensor is used for localization and mapping in autonomous vehicles?

  1. GPS

  2. IMU

  3. Camera

  4. Radar
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

GPS (Global Positioning System) is commonly used for localization and mapping in autonomous vehicles. It provides information about the vehicle's position, velocity, and orientation, allowing the vehicle to determine its location and navigate through the environment.

Multiple choice

What are some of the features that are commonly found on DVD players?

  1. HDMI output

  2. Component video output

  3. S-Video output

  4. Composite video output
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Common features found on DVD players include HDMI output, component video output, S-Video output, and composite video output.

Multiple choice

Which display technology generally offers higher contrast ratios?

  1. OLED

  2. LCD
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

OLED displays have inherently higher contrast ratios compared to LCDs due to their self-emissive nature, allowing for deeper blacks and more vibrant colors.

Multiple choice

Which display technology is more susceptible to image retention or burn-in?

  1. OLED

  2. LCD
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

OLED displays are more prone to image retention or burn-in, where static images can permanently leave a ghosting effect on the screen.

Multiple choice

What is the typical response time of an OLED display compared to an LCD display?

  1. Faster

  2. Slower
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

OLED displays typically have faster response times than LCDs, resulting in smoother motion and reduced motion blur during fast-paced content.

Multiple choice

Which display technology is generally thinner and more flexible?

  1. OLED

  2. LCD
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

OLED displays are thinner and more flexible compared to LCDs, making them suitable for curved or foldable devices.

Multiple choice

Which display technology is less susceptible to color shifting at extreme viewing angles?

  1. OLED

  2. LCD
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

OLED displays exhibit less color shifting at extreme viewing angles compared to LCDs, resulting in more consistent image quality across the entire screen.

Multiple choice

Which display technology is more resistant to motion blur and ghosting?

  1. OLED

  2. LCD
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

OLED displays have faster response times and lower motion blur compared to LCDs, resulting in smoother and clearer motion during fast-paced content.