Which of the following can be considered as alphanumeric data?

A. Letters and special symbols like #, ^, *

C. Only alphabetic letters A-Z and a-z

D. Only special symbols like @, !, &

Computer · Introduction to Computing · page 1 of 13

Number Systems & Digital MCQs with Answers

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Number Systems & Digital Logic MCQs (1–10)

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Past paper MCQs in this chapter · See all past papers

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1.
Past Paper MCQ
How many choices are available in a binary decision?
Correct Answer: B. Two
One-liner
A binary decision has exactly two choices, as "binary" means composed of two parts.
2.
Past Paper MCQ
Instructions are written in machine language as
Correct Answer: A. Binary Code
One-liner
Instructions are written in machine language as Binary Code.
3.
What is the process called that transforms a continuous-tone image into a digital format?
Correct Answer: B. Quantization
One-liner
The process of transforming a continuous-tone image into a digital format is called Quantization.
4.
EBCDIC encoding system can represent how many distinct characters?
Correct Answer: B. 256
One-liner
EBCDIC (Extended Binary Coded Decimal Interchange Code) is an 8-bit encoding system that can represent 256 distinct characters.
5.
How many bits are there in a word?
Correct Answer: C. 32
One-liner
A word in computing typically consists of 32 bits (4 bytes), though the exact size depends on the processor architecture.
6.
Which of the following can be considered as alphanumeric data?
Correct Answer: A. Letters and special symbols like #, ^, *
One-liner
Alphanumeric data consists of letters and special symbols like #, ^, * along with digits, representing any combination of alphabetic, numeric, and special characters.
7.
Which logic gate has only one input?
Correct Answer: C. NOT gate
One-liner
The NOT gate is the only logic gate that has a single input.
8.
Which gate gives output 1 if any input is 1?
Correct Answer: B. OR gate
One-liner
The OR gate gives output 1 if any input is 1.
9.
NOT Gate has only _ input?
Correct Answer: A. 1
One-liner
A NOT gate has only 1 input, and it produces the inverted/complemented output of that single input.
10.
The Boolean expression of an AND gate is ?
Correct Answer: D. A . B
One-liner
The Boolean expression of an AND gate is A . B (also written as A·B or AB), representing logical multiplication.

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Number Systems & Digital MCQs with Answers

Number Systems & Digital Logic MCQs (1–10)

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