Computer Science > EXAM > Technical Support Fundamentals: How to Count in Binary WK 1 (All)

Technical Support Fundamentals: How to Count in Binary WK 1

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Technical Support Fundamentals: How to Count in Binary WK 1 Which of these is a valid byte? Check all that apply. 11011011; A byte is composed of eight bits of zeros and ones. 00000000; A byte is co... mposed of eight bits of zeros and ones. How many possible values can we have with 8 bits? 256; Bits use the binary system, which is also known as the base-2 numeral system. So 2^8 allows us 256 values from 0 to 255. Why did UTF-8 replace the ASCII character-encoding standard? UTF-8 can store a character in more than one byte; UTF-8 replaced the ASCII character-encoding standard because it can store a character in more than a single byte. This allowed us to represent a lot more character types, like emoji. What is the highest decimal value we can represent with a byte? 255; There are 256 values in a byte, from the decimal number 0 to 255. The binary value of the ASCII letter "c" is 0110 0011. Using the handy chart that we learned in the lesson, convert this number to its decimal value. You'll need to use some math for this question. 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 99; The decimal value 99 is same as the binary value 0110 0011. So the numbers that are turned ON are 64, 32, 2, and 1 and added up together. In other words, 64 + 32 + 2 + 1 = 99. What are the four layers of the computer architecture? Hardware, operating system, software, user; The layers of computer architecture are the hardware, operating system, software, and user layers. Write a paragraph on examples of abstraction that you encounter in your day-to-day life. For example, driving a car is an example of abstraction, you don't need to understand how a car works underneath the hood in order to drive one. In a computer, I would need a keyboard and a screen in order to work with the hardware and its operating system.; It's amazing how often we use abstraction in our daily lives, without even realizing it. Thank you for submitting your response to this prompt. I encourage you to think of other ways you use abstraction in your daily routine. This habit will help as you prepare to become an IT Support Specialist! [Show More]

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