1) Which of the following is not a form of compression? a) Lose it b) Lossy c) Lossless d) 7-Zip e) Win-Zip 2) Which describes run length encoding? a) Simple form of lossless compression and demonstrates the nature of how lossless compression seeks to find patterns b) A method of encryption that will allow the user to remove their own sections of the file. c) Compression that will store all of the data in a lossy file. d) A type of encoding that deals with Python programs at run time. 3) Which describe a TIFF? a) Storing raster graphics, popular amongst artists. b) Has transparent backgrounds and is used for online images. c) Series of images that will loop. d) Most common format and used in photographs. 4) Picture Elements can be shortened to what? a) Pixels b) Picels c) Snaps d) BitMaps 5) A higher DPI will do what to an image's quality? a) Increase it. b) Reduce it. c) Nothing. d) Delete it. 6) Which will not be stored in metadata? a) Sound a pixel makes. b) Bits Per Pixel. c) Width. d) Height. e) Image Data. 7) 2 to the power of 24 provides how many different colours? a) 16,777,216 b) 65,536 c) 48 d) 10,181,546 8) What is missing? Sound File Size = sample rate x resolution x [ ] a) seconds b) minutes c) hours d) bits per second 9) Storing repeating sections of a sentence will come under what type of encoding? a) Dictionary b) Thesaurus c) Sound d) Lossless 10) What is the algorithm for Hashing a value? a) key_value MOD number of memory locations b) number of memory locations MOD key_value c) 100111 + 101101 d) Index DIV Data value 11) What would 34133 MOD 1000 output? a) 133 b) 341 c) 3411 d) 4133 12) Hashed values stored in the same index are known as what? a) Collisions b) Interupts c) Take Overs d) Overflow Errors 13) Symmetric encryption uses how may encryption keys? a) 1 b) 2 c) 3 d) 6 14) Which type of encryption carries a public key? a) Asymmetric b) Symmetric c) ROT13 d) Caesar Cipher 15) What does persistent mean? a) Permanent b) Temporary c) Gradually d) Encrypted 16) Database tables can be referred to as.... a) Entities b) Attributes c) Fields d) Records 17) Database software should follow what acronym? a) CRUD b) GOOD c) KISS d) FRUBE 18) Databases that tables that link are known as what? a) Relational b) Flatfile c) Spreadsheet d) SQL 19) What does a Primary Key do? a) Uniquely identifies each record. b) Links tables together. c) Turns into a foreign key. d) Allows a table to accept data. 20) What does an E.R.D do? a) Shows the layout of a relational database. b) Displays the records that need to be entered. c) Creates many-to-many relationships. d) Creates one-to-many relationships.

1.3 - Exchanging Data

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