Unit 1 Questions CompSci

9

Convert the binary (base-2) number 1001 to decimal (base-10).

10100

Convert the decimal (base-10) number 20 to binary (base-2).

11000000

Which of the following binary (base-2) numbers is LARGEST?

256

How many total numbers can be represented with an 8-bit binary (base-2) system?

The photo is a digital representation of the analog painting

When visiting a museum Lian takes a photo of a painting with a smartphone which stores the photo as an image file. Which of the following best describes the differences between the painting itself and the photo of the painting stored on the smartphone?

A computer represents data as bits which is either a 0 or a 1

Which of the following best describes how computing devices represent information?

Common abstractions that are represented by computing devices include numbers, characters, and color.

Which of the following is NOT true of how computers represent complex information?

With a fixed number of bits some numbers are too large to represent in a computer which will lead to overflow errors.

Which of the following is true of how computers represent numbers?

B. Lossy compression algorithms are typically better than lossless compression algorithms at reducing the number of bits needed to represent a piece of data.

Which of the following is true of lossy and lossless compression algorithms?

16

Your computer uses 4 bits to represent decimal numbers (0, 1, 2, 3 and so on) in binary. What is the SMALLEST number for which an overflow error occurs?