Code HS Questions and Answers Graded A+

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Code HS Questions and Answers Graded A+ What is data abstraction? ✔✔The process of simplifying complicated data into manageable chunks Which of the following are examples of encoding informati... on? ✔✔Representing fast food meals as numbers on the menu. For example a number 1 represents a hamburger. Assigning a numeric value to every area of a region, for example zip codes in the United States Assigning a number to every character of the alphabet so we can represent sentences as series of simple digits. What is the number base of the binary number system? ✔✔2 In the binary value 1002, what is the place value of the 1? ✔✔4s place How many possible values can be created with only 2 bits? ✔✔4 How many bits are used to encode a character according to the ASCII encoding scheme? ✔✔8 bits (ex: 0100 0001 encodes 'A') What is a pixel? ✔✔A single tiny dot, or square, of color in a digital image. What is the value of 9F16 in binary? ✔✔1001 11112 What is the value of F16 in decimal? ✔✔15(10) What are the 3 color channels that make up a pixel according to the RGB color scheme? ✔✔Red, Green, and Blue What is the range of values (expressed in decimal) that each color channel can have? ✔✔(0)10 - 255(10) Which of the following pixels has a color value of #ff0000 (expressed in hexadecimal) ✔✔(Red Pixel) Which of the following instructions would brighten a pixel? Assume R is the red value of the pixel, G is the green value, and B is the blue value. ✔✔R = Math.min(R + 50, 255); G = Math.min(G + 50, 255); B = Math.min(B + 50, 255); Which of the following describes the instructions for a general image filter? ✔✔Given an image: for every (x, y) coordinate in the image Get the current pixel at (x, y) Modify the pixel according to a function Update image at (x, y) with this modified pixel Which of the following functions properly removes all green and blue from a pixel and returns the modified pixel? ✔✔var RED = 0; var GREEN = 1; var BLUE = 2; function removeGreenAndBlue(pixel) { pixel[GREEN] = 0; pixel[BLUE] = 0; return pixel; } [Show More]

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