Vocab lesson 5-10 Unit 1

What is an Overflow Error?

• Error from attempting to represent a number that is too large.

• Error from attempting to represent a number that is too precise.

• Data with values that change continuously over time.

• A process for creating a digital representation of analog data.

Answer explanation

An Overflow Error occurs when a calculation results in a number that exceeds the maximum limit that can be represented in a given data type, making 'Error from attempting to represent a number that is too large' the correct choice.

What is a Round-off Error?

• Error from attempting to represent a number that is too large.

• Error from attempting to represent a number that is too precise.

• Data with values that change continuously over time.

• A process for creating a digital representation of analog data.

Answer explanation

A round-off error occurs when a number is approximated to a certain precision, leading to inaccuracies. The correct choice highlights that this error arises from trying to represent a number that is too precise for the available format.

Which type of data changes continuously or smoothly over time?

• Digital Data

• Analog Data

• Lossless Compression

• Lossy Compression

Answer explanation

Analog data changes continuously over time, representing values in a smooth manner, unlike digital data which is discrete. This makes analog data suitable for capturing real-world phenomena like sound and light.

Which type of data changes discretely through a finite set of possible values?

• Digital Data

• Analog Data

• Lossless Compression

• Lossy Compression

Answer explanation

Digital data changes discretely through a finite set of values, such as binary (0s and 1s). In contrast, analog data varies continuously, making digital data the correct choice for this question.

What is the process of creating a digital representation of analog data by measuring the analog data at regular intervals called?

• Lossless Compression

• Lossy Compression

• Sampling

• Round-off Error

Answer explanation

The process of creating a digital representation of analog data by measuring it at regular intervals is called sampling. This technique captures the essential information of the analog signal for digital processing.

What is Lossless Compression?

• A process for reducing the number of bits needed to represent something without losing any information.

• A process for reducing the number of bits needed to represent something in which some information is lost.

• Data with values that change continuously over time.

• Error from attempting to represent a number that is too large.

Answer explanation

Lossless compression reduces data size without losing any information, making it ideal for applications where data integrity is crucial. The correct choice accurately describes this process.

What is Lossy Compression?

• A process for reducing the number of bits needed to represent something without losing any information.

• A process for reducing the number of bits needed to represent something in which some information is lost.

• Data with values that change continuously over time.

• Error from attempting to represent a number that is too large.

Answer explanation

Lossy compression reduces file size by removing some data, which means some information is lost. This is different from lossless compression, where no information is lost. Thus, the correct choice describes lossy compression accurately.

Which of the following is an example of analog data?

• A digital clock

• A music recording

• A text file

• A binary number

Answer explanation

A music recording is an example of analog data because it captures continuous sound waves. In contrast, a digital clock, text file, and binary number represent data in discrete formats.

Which of the following is NOT an example of digital data?

• A text file

• A binary number

• A digital clock

• Colors of a painting

Answer explanation

Colors of a painting are not digital data; they are analog and represent physical properties. In contrast, a text file, binary number, and digital clock are all forms of digital data.

Which error occurs when attempting to represent a number that is too precise?

• Overflow Error

• Round-off Error

• Sampling Error

• Compression Error

Answer explanation

A Round-off Error occurs when a number is approximated to fit within a certain precision limit, leading to a loss of accuracy. This is the correct choice when representing a number that is too precise.