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Binary and Data Representation Quiz

Authored by Wisdom Ativi

Computers

9th - 12th Grade

Used 2+ times

Binary and Data Representation Quiz
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many bits are in a nibble?

2

4

8

16

Answer explanation

A nibble consists of 4 bits. It is half of a byte, which contains 8 bits. Therefore, the correct answer is 4.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which term represents 1,024 bytes?

Kilobyte

Kibibyte

Megabyte

Mebibyte

Answer explanation

A Kibibyte (KiB) is defined as 1,024 bytes, while a Kilobyte (KB) is often used to refer to 1,000 bytes. Therefore, the correct term for 1,024 bytes is Kibibyte.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary advantage of using hexadecimal over binary in data representation?

Hexadecimal uses fewer digits

Hexadecimal is faster to compute

Hexadecimal allows for more accurate calculations

Hexadecimal represents negative numbers better

Answer explanation

The primary advantage of using hexadecimal over binary is that hexadecimal uses fewer digits to represent the same value. This makes it more compact and easier to read, especially for large binary numbers.

4.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the maximum number that can be stored in 8 bits?

Evaluate responses using AI:

OFF

Answer explanation

In 8 bits, the maximum value is calculated as 2^8 - 1, which equals 255. This is because 8 bits can represent values from 0 to 255, making 255 the highest number that can be stored.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the sample rate measured in?

Bits

Bytes

Hertz (Hz)

Kilobytes

Answer explanation

The sample rate refers to the number of samples taken per second in audio processing, which is measured in Hertz (Hz). This indicates how many times per second the audio signal is sampled.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when binary shifts left by one place?

Divides the number by 2

Multiplies the number by 2

Divides the number by 4

Adds 1 to the number

Answer explanation

Shifting a binary number left by one place effectively multiplies the number by 2. Each left shift increases the value by a factor of 2, making 'Multiplies the number by 2' the correct choice.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many characters can be represented using 7-bit ASCII?

64

128

256

512

Answer explanation

7-bit ASCII uses 7 bits to represent characters, allowing for 2^7 combinations. This results in 128 unique characters, including control characters and printable symbols. Therefore, the correct answer is 128.

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