01
Choose one
1 point
What decimal value is represented by the binary number 101101₂?
Free Practice Quiz Question List
2. Binary and Digital Representation Online Quiz Questions
Use this free practice quiz with 20 questions to review 2. Binary and Digital Representation, test your knowledge, and prepare for your next test or exam.
20 questions
02
Choose one
1 point
Which option correctly describes how the character A is represented in UTF-8?
- A
U+0041 as the two-byte sequence 40 01
- B
U+0041 as the single decimal byte 41
- C
U+0041 as the single hexadecimal byte 41
- D
U+0041 as the four-byte sequence 00 00 00 41
03
Choose all
1 point
Select all statements that correctly describe digital image representation.
- A
An 8-bit grayscale pixel can have 256 possible shades.
- B
An RGB image with 8 bits per channel uses 24 bits per pixel.
- C
Greater spatial resolution means more pixels across the image.
- D
A vector image stores mathematical descriptions of shapes rather than every pixel.
- E
A vector image must store one numerical value for every displayed pixel.
04
Choose all
1 point
Select all factors that determine the amount of uncompressed digital audio sample data.
- A
Sampling rate
- B
Bit depth
- C
Number of channels
- D
Duration
- E
The file name alone
05
True or false
1 point
True or false: A sequence of bits has a fixed meaning even when no data type, encoding, or file format is specified.
- A
True
- B
False
06
True or false
1 point
True or false: Increasing the bit depth of digital audio provides finer measurement levels for each sample.
- A
True
- B
False
07
Written response
1 point
What decimal value is represented by 11010₂? Enter the decimal value as a whole number.
08
Written response
1 point
Which Unicode encoding form uses one to four bytes for a Unicode character? Enter the encoding form's standard name.
09
Fill in the blank
1 point
Complete the statement: To store sound digitally, a computer repeatedly measures the analog signal through and assigns each measurement a numerical value through .
10
Fill in the blank
1 point
Complete the statement: A raster image is a of .
11
Open ended
1 point
Explain how digital systems represent fractional and real-number values. In your answer, describe the role of powers of 2 after a binary point, explain the main fields in a floating-point representation, and state why more bits do not make every real number exactly representable.
12
True or false
1 point
True or false: A floating-point format can represent every real number exactly if it uses fields for a sign, exponent, and fraction.
- A
True
- B
False
13
Choose one
1 point
What is the greatest decimal value that can be represented by an unsigned byte?
- A
128
- B
254
- C
256
- D
255
14
Choose one
1 point
How many bits are contained in one byte?
- A
2 bits
- B
8 bits
- C
16 bits
- D
256 bits
15
Choose one
1 point
What is the decimal value of the binary number 10110₂?
- A
18
- B
20
- C
22
- D
24
16
Written response
1 point
Convert the binary number 101101₂ to decimal. Enter the decimal value as a whole number.
17
Choose one
1 point
Which eight-bit binary pattern represents the decimal value 5 as an unsigned byte?
- A
00000101₂
- B
00000111₂
- C
10100000₂
- D
11111011₂
18
Written response
1 point
In digital audio, what is the single technical term for assigning each sampled signal measurement a numerical value?
19
Choose one
1 point
Which statement accurately describes how UTF-8 stores Unicode characters?
- A
Exactly one byte for every character
- B
Exactly two bytes for every character
- C
Exactly four bytes for every character
- D
Between one and four bytes, depending on the character
20
Choose one
1 point
An 8-bit grayscale image uses one 8-bit value for each pixel. How many different pixel values can it represent?
- A
8
- B
256
- C
512
- D
2,048