Free Practice Quiz Question List

1 Binary Representation and Data Online Quiz Questions

Use this free practice quiz with 20 questions to review 1 Binary Representation and Data, test your knowledge, and prepare for your next test or exam.

20 questions

True or false

1 point

True or false: A bit pattern has a fixed meaning even when no data type or encoding has been specified.

A
True
B
False

Choose one

1 point

A system stores data only in whole bytes. What is the minimum number of bytes needed to store a 19-bit pattern?

A
2 bytes
B
3 bytes
C
8 bytes
D
19 bytes

Written response

1 point

What is the standard term for a numeric value assigned to a character, such as $\text{U+0041}$ ?

Fill in the blank

1 point

Write the hexadecimal value of the binary pattern $00101111_2$ :

True or false

1 point

True or false: UTF-16 uses one or two 16-bit code units to encode a code point.

A
True
B
False

Choose one

1 point

What is the decimal value of the hexadecimal number $\text{0x3A}$ ?

A
36
B
48
C
58
D
310

Choose all

1 point

Select all correct statements about the ranges of 8-bit integers.

A
An 8-bit unsigned integer ranges from $0$ to $255$ .
B
An 8-bit unsigned integer ranges from $-128$ to $127$ .
C
An 8-bit two’s-complement signed integer ranges from $-128$ to $127$ .
D
An 8-bit two’s-complement signed integer ranges from $-255$ to $255$ .

Written response

1 point

Interpret the 8-bit pattern $11010110_2$ as a signed two’s-complement integer. What is its value in decimal?

Fill in the blank

1 point

What is the largest value representable by an unsigned 6-bit integer? Enter the decimal value:

Choose one

1 point

If $10000001_2$ is interpreted as an unsigned 8-bit integer, what is its decimal value?

A
127
B
129
C
-127
D
131

Choose all

1 point

Select all statements supported by the principles of basic data representation.

A
A bit pattern may represent different things under different data types or formats.
B
Every 8-bit pattern must represent a character.
C
Image data can be represented by numerical pixel samples.
D
Audio data can be represented by numerical sound samples.

Choose one

1 point

Which statement correctly distinguishes a Unicode code point from UTF-8?

A
A code point is the number of bytes used to store a character, while UTF-8 is a character.
B
A code point and a UTF-8 byte sequence are always identical concepts.
C
A code point identifies a character, while UTF-8 specifies how code points become stored bytes.
D
UTF-8 assigns code points, while Unicode specifies the number of bits in each byte.

Open ended

1 point

Explain the difference between a Unicode code point and an encoding form. Use the character A to give one example of a code point and how UTF-8 stores it.

Choose one

1 point

Which 8-bit pattern represents $-12$ in two’s complement?

A
$11110011_2$
B
$11110100_2$
C
$00001100_2$
D
$00001101_2$

Choose one

1 point

What decimal value does the unsigned binary numeral $101101_2$ represent?

A
43
B
45
C
53
D
37

Choose one

1 point

Which binary numeral represents the decimal value 46?

A
$101110_2$
B
$101101_2$
C
$110110_2$
D
$111010_2$

Choose one

1 point

Which of these unsigned binary numerals has the greater value: $101011_2$ , $101101_2$ , or $100111_2$ ?

A
$101011_2$
B
$101101_2$
C
They have equal values.
D
$100111_2$

True or false

1 point

For an unsigned binary numeral, changing a bit in the $2^k$ position from 0 to 1 while leaving every other bit unchanged increases the value by $2^k$ .

A
True
B
False

Written response

1 point

In an unsigned binary numeral, what decimal amount does a 1 in the $2^4$ position contribute to the total value?

Written response

1 point

What decimal value does the unsigned binary numeral $1110101_2$ represent?