Practice Computer Hardware under Computers for CET 12th Level with 20 free MCQs in Hindi and English.
CET 12th Level — Computer Hardware
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
What happens to the light emitted by a Barcode Reader when it hits the white spaces of a printed barcode?
Question 2 of 20
Which of the following highly portable storage formats operates on the exact same underlying Solid-State NAND flash technology as a high-performance computer SSD?
Question 3 of 20
In a modern optical mouse, what is the role of the Digital Signal Processor (DSP)?
Question 4 of 20
Why is the Magnetic Ink Character Recognition (MICR) technology primarily restricted to the banking and financial sector despite its high accuracy?
Question 5 of 20
What is the primary technological difference between a standard LCD monitor and an LED monitor?
Question 6 of 20
In the sequence of hardware components bridging the operator and the processor, which component is strictly responsible for 'retention'?
Question 7 of 20
Match the specific Input Device (List-I) with its corresponding operational description (List-II):
List-I
1. Biometric Sensors
2. Touchpad
3. Light Pen
List-II
A. The input space coincides with the display area
B. Captures data directly from the environment automatically
C. Requires physical pressing and sliding by a human
Question 8 of 20
Which of the following elements are classified strictly as 'Raw data' gathered during the Input Phase?
1. Text
2. Numbers
3. Executed binary programs
4. Images
5. Sound
Question 9 of 20
Which of the following physical materials serves as the base layer into which microscopic pits and lands are pressed or burned to create an Optical Storage disc?
Question 10 of 20
What primary limitation requires software to operate symbiotically with hardware?
Question 11 of 20
Consider the following statements concerning Inkjet Printers:
1. They provide extremely economical operation for high-volume bulk text printing.
2. They are renowned for producing exceptional color photo quality.
3. They have a highly affordable initial hardware cost but suffer from high ongoing cartridge costs.
Which of the statements given above is/are CORRECT?
Question 12 of 20
Match List-I (Device Component/Mechanism) with List-II (Associated Input Device):
List-I
a. Internal mechanical rollers
b. Alters electrical capacitance
c. Uses Intelligent Character Recognition (ICR)
d. Absorbs emitted light on dark zones
List-II
I. Condenser Microphone
II. Trackball
III. Barcode Reader
IV. Optical Character Recognition (OCR)
Question 13 of 20
Assertion (A): A Barcode Reader inherently possesses internal circuitry that understands human intent without binary translation.
Reason (R): It is an Automatic Input Device that captures data directly from the environment.
Question 14 of 20
In the context of computer storage, the Central Processing Unit (CPU) requires ______ Storage to fetch active instructions because of its nanosecond operational speeds.
Question 15 of 20
Why must an application running on a computer be transferred from the Hard Drive into the Random Access Memory (RAM) before the CPU can interact with it?
Question 16 of 20
Which of the following best represents the format of data immediately after it passes through an input device but before it reaches the CPU?
Question 17 of 20
What is the immediate digital output generated by a barcode reader after its photodiode analyzes alternating light and dark patterns?
Question 18 of 20
What specifically happens to instructions when the Control Unit fetches them from memory during the processing phase?
Question 19 of 20
Which of the following describes the fundamental working mechanism of a Capacitive Touchscreen?
Question 20 of 20
Regarding Non-Impact Printers, consider the following statements:
1. They generate characters by striking a mechanism against an ink ribbon.
2. Laser printers are a type of non-impact printer known for whisper-quiet operation.
3. Inkjet printers are prone to ink smearing if the document gets wet.
Which of the statement(s) is/are correct?
