CERTIFIED COMPUTER SCIENCE STATE TEST 500+ QUESTIONS WITH VERIFIED ANSWERS LATEST UPDATE 2024

CERTIFIED COMPUTER SCIENCE STATE TEST 500+ QUESTIONS WITH VERIFIED ANSWERS LATEST UPDATE 2024 What is the CPU and what does it do? The CPU is the central processing unit and it carries out all the processing and calculations in a computer. What is ASCII? ASCII (American Standard Code for Information Interchange) is a character system that lets computers and devices process letters, numbers and characters. It is represented by a 7-bit binary number. What is Unicode? Unicode allows for a greater range of characters and symbols than ASCII, including different languages and emojis. It requires between 8 and 32 bits per character. What is resolution? Number of pixels in an image what is colour depth/ bit depth? the number of bits used to represent each color. How do you calculate File size? File size = resolution x bit depth How are Bitmap images are stored? Broken down into pixels Each color of an image stored as a binary number Each pixel is represented as a single value that is different for each color What is compression? Compression exists to reduce the size of the file. The impact of this is that less bandwidth (measure of the amount of data that the medium can transfer over a given period of time), less storage is required and shorter transmssion time.