Unit 1 Test Retakes Flashcards
If you take a picture on your pjone and post it on the internet ; and Beatrice sees your picture and copies it and post it on a website with a an attached Creative Commons license . Who owns the photo and Why?
I do because I’m the orignal creator and did not license the photo .
You have created an app that needs to quickly seend low quality photos to users . What form type of compressions should you use.
Lossy Compressions
BIN Which of the following best describes how computing devices represent information?
A computer represents data as bits which is either a 0 or a 1.
(True or false ?) Abstraction helps represent complex information by revealing complexity that might otherwise be hidden.
False
If You take a picture of a painting at a museum on your smart phone . How would you describe the differences between the painting itself and the photo taken on the smartphone .
The photo is a digital representation of the analog painting.
BIN 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 occur?
16
Examples of what can be represented by a single binary digit .
-The state of a light switch
- The remainders of the following quotients: 4/3, 15/5, 10/2, 17/4
When finding the ASCII Symbols repersented by Binary value ( When the Binary value is given ) what are the steps to find the ASCII Symbol.
- First put the binary digit to decimal form
- In the colum where the decimal number is you will find the ASCII symbols
Side Note
ASCII Symbol for 00100001 (33 in decimal ) is !
A store uses binary numbers to assign a unique binary sequence to each item in its inventory.What is the minimum number of bits required for each binary sequence if the store has between 75 and 100 items in its inventory?
7
A binary number is to be transformed by appending three 0s to the end of the number. For example, 11101 is transformed to 11101000. Which of the following correctly describes the relationship between the transformed number and the original number?
The transformed number is 8 times the value of the original number.
A program developed for a Web store represents customer account balances using a format that approximates real numbers. While testing the program, a software developer discovers that some values appear to be mathematically imprecise. Which of the following is the most likely cause of the imprecision?
The account balances are represented using a fixed number of bits, resulting in round-off errors.
BIN Which of the following is true of how computers represent numbers?
With a fixed number of bits some numbers are too large to represent in a computer which will lead to overflow errors.
Your sending a large image to somone for a group project . Which is most likely true if you opt to compres the image before sending it ?
The image will require fewer bits in order to be represented.
Is this True or False about lossy and lossless compression algorithms?
Lossy compression algorithms are typically better than lossless compression algorithms at reducing the number of bits needed to represent a piece of data.
