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Questions and Answers
If a system attempts to represent the number 1,000,000,000,000,000 (one quadrillion) but can only accurately store numbers up to 999,999,999, what type of error will occur?
If a system attempts to represent the number 1,000,000,000,000,000 (one quadrillion) but can only accurately store numbers up to 999,999,999, what type of error will occur?
- Sampling error
- Round-off error
- Lossy compression error
- Overflow error (correct)
Which of the following is an example of data represented using a binary system?
Which of the following is an example of data represented using a binary system?
- A volume control knob on a stereo system
- A light switch with only 'on' or 'off' positions (correct)
- A dial thermometer displaying temperature
- A digital clock displaying time in hours and minutes
A digital audio recording is created by measuring the amplitude of an analog sound wave at regular intervals. This process is best described as:
A digital audio recording is created by measuring the amplitude of an analog sound wave at regular intervals. This process is best described as:
- Binary encoding
- Lossy compression
- Round-off correction
- Sampling (correct)
Which of the following scenarios is most likely to involve the use of 'lossy compression'?
Which of the following scenarios is most likely to involve the use of 'lossy compression'?
Why would a music streaming service use lossy compression techniques for its audio files?
Why would a music streaming service use lossy compression techniques for its audio files?
Which of the following best illustrates the concept of intellectual property?
Which of the following best illustrates the concept of intellectual property?
A programmer notices that their calculations involving very small fractions are consistently slightly off. This is most likely due to:
A programmer notices that their calculations involving very small fractions are consistently slightly off. This is most likely due to:
Which of the following data types is inherently analog?
Which of the following data types is inherently analog?
An author wants to allow others to freely share, use, and build upon their copyrighted work. Which type of license would best enable this?
An author wants to allow others to freely share, use, and build upon their copyrighted work. Which type of license would best enable this?
Which of these processes is reversible?
Which of these processes is reversible?
Flashcards
Binary
Binary
Representing information using only two options (0 and 1).
Decimal
Decimal
Representing information using ten options (0-9).
Bit
Bit
Short for 'Binary Digit'; the smallest unit of data in a computer.
Byte
Byte
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Overflow Error
Overflow Error
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Round-off Error
Round-off Error
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Analog Data
Analog Data
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Digital Data
Digital Data
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Sampling
Sampling
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Lossless Compression
Lossless Compression
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Study Notes
- Binary representation uses only two options to represent information.
- Decimal representation uses ten options to represent information.
- A bit is a contraction of "Binary Digit" and represents the single unit of information in a computer, typically as a 0 or 1.
- A byte consists of 8 bits.
- An overflow error occurs when a number is too large to be represented.
- A round-off error occurs when a number is too precise, and the value is rounded.
- Analog data has values that change continuously or smoothly over time, with examples including music, colors of a painting, or the position of a sprinter during a race.
- Digital data changes discretely through a finite set of possible values.
- Sampling is a process for creating a digital representation of analog data by measuring the analog data at regular intervals called samples.
- Lossless compression reduces the number of bits needed to represent something without losing any information, and this process is reversible.
- Lossy compression reduces the number of bits needed to represent something, but some information is lost or thrown away, making this process not reversible.
- Intellectual property is a work or invention resulting from creativity, such as a piece of writing or a design, to which one has rights and for which one may apply for a patent, copyright, trademark, etc.
- Creative Commons is a collection of public copyright licenses that enable the free distribution of an otherwise copyrighted work, used when an author wants to give people the right to share, use, and build upon a work that they have created.
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