Crash Course Computer Science #20 - Files & File Systems

What is this episode about?

• files

• file systems

• magnetic tapes

• storage

It is most useful and practical for data inside a file to be organized somehow, called a

• file system

• coding source

• file format

• folder format

The most straightforward file format is text, or ___, files. They are just huge lists of binary.

• .text

• .tx

• .txt

• .tex

What's the character encoding standard that we previously discussed in episode 4?

• Python

• ASCII

• Java

• Binary

A ​ (a)   , or .wav, file stores audio. Before we can correctly ​ (b)   the data, we need to know some information, like the ​ (c)   and whether it's a single track or stereo. Data, about data, is called ​ (d)   .

• wave
• read
• bit rate
• metadata
• wavelength
• execute
• data2

Audio files store data about sound waves. The ups and downs of the wave are converted to numbers. Larger numbers mean higher sound pressure, called...

• amplitude

• channels

• volume

• expansion

What stores pictures?

• technicolor

• gallery

• bitmaps

• albums

What are the 3 colors that make up pixels in pictures?

• red

• green

• blue

• yellow

• purple

Match the following

• black

• red + green

• white

• all colors are lowest intensity

• yellow

• all colors at max intensity

What's a special file that records where other files are located?

• mapping file

• directory file

• index file

• address file