A smart card reader is used for: MCQ with Answer and Explanation

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A smart card reader is used for:

A. Printing

B. Scanning photos

C. Mouse input

D. Secure authentication with chip cards

Answer: Option D

Solution (By JKSSB Mock Tests)

Banking and ID.

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Question #1

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The standard for wireless keyboard and mouse is:

A. Infrared

B. Bluetooth or 2.4GHz dongle

C. USB cable only

D. HDMI

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Correct Answer: Option B

Explanation:
Modern wireless peripherals use these.

This question belongs to: Computer Computer Hardware

Question #2

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The number of keys in a standard keyboard is usually:

A. 75

B. 101 or 104

C. 50

D. 200

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Correct Answer: Option B

Explanation:
Full-size keyboards.

This question belongs to: Computer Computer Hardware

Question #3

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What is a light pen used for?

A. Audio input

B. Printing

C. Scanning documents

D. Direct input on CRT screens

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Correct Answer: Option D

Explanation:
Light pen is an old pointing device for screens.

This question belongs to: Computer Computer Hardware

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