AP CSP Unit 1 Test Questions With Solved Solutions 2024.

Best describe how computing devices represent information - Answer A computer represents data as bits which is either a 0 or a 1 What is NOT true of how computers represent complex information? - Answer Abstraction helps represent complex information by surfacing complexity that might otherwise be hidden 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? - Answer The photo is a digital representation of the analog painting our 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 occur? - Answer 16 (4 to the second power= 4x4=16) How do computers represent numbers? - Answer With a fixed number of bits some numbers are too large to represent in a computer which will lead to overflow errors. Convert the binary (base-2) number 1001 to decimal (base-10). - Answer 9 Convert the decimal (base-10) number 20 to binary (base-2). - Answer 10100 Which of the following binary (base-2) numbers is LARGEST? A. B. C. D. - Answer A. How many total numbers can be represented with an 8-bit binary (base-2) system? - Answer 256 (2^8)