Unit 2: Data
Showing 20 of 35 questions
How is the decimal number 13 represented in binary?
What is the decimal equivalent of the binary number 10110?
An image is stored using 3 bits per pixel. How many different colors can each pixel represent?
Which of the following is a primary purpose of data compression?
What is the difference between lossy and lossless compression?
Which of the following is an example of metadata?
A computer uses 4 bits to represent each pixel of a black-and-white image. The image is 100 pixels wide and 200 pixels tall. How many bits are needed to store this image (without compression)?
Which of the following statements about overflow errors is true?
A music streaming service uses a sampling rate of 44,100 samples per second and 16 bits per sample for stereo audio (2 channels). How many bits are needed for one second of audio?
A dataset contains information about students including name, grade, and test scores. Which of the following questions CANNOT be answered using only this dataset?
An analog sound wave is sampled at different rates. Which statement about sampling rate is correct?
What is the largest unsigned integer that can be represented with 4 bits?
What is the decimal value of the binary number 1011?
An overflow error occurs when:
Lossless compression:
Which is an example of lossy compression?
When converting an analog signal to digital, the process involves:
In an RGB color model, each color channel uses 8 bits. How many total bits are needed to represent one pixel?
When cleaning data from a large dataset, which is most important?
What is the decimal value of binary 11001?
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