Files & File Systems: Crash Course Computer Science

The video explores how computers store and organize data using file systems. It covers different file formats like text, WAV, and bitmaps, explaining how metadata helps interpret data. The video also discusses file storage methods, including flat and hierarchical file systems, and the concepts of fragmentation and defragmentation. It highlights the importance of directories in managing files and introduces the idea of hierarchical file systems for better organization.

What is the primary purpose of metadata in a file?

• To store the actual data

• To provide information about the data

• To encrypt the data

• To compress the data

Which file format is typically used for storing audio data?

• TXT

• BMP

• JPEG

• WAV

In a bitmap image, what does a pixel's RGB value of 255, 255, 255 represent?

• Yellow

• Red

• White

• Black

What does a 24-bit color depth in a bitmap image signify?

• 8 bits for each of red, green, and blue

• 24 bits for each color

• 16 bits for each of red, green, and blue

• 32 bits for each color

What is the role of a directory file in a flat file system?

• To encrypt files for security

• To compress files for storage

• To record the location and metadata of other files

• To store the actual data of files

How does a flat file system handle file storage?

• Files are stored back to back

• Files are stored in encrypted form

• Files are stored in a hierarchical manner

• Files are stored in compressed form

What is fragmentation in the context of file systems?

• The deletion of files from storage

• The encryption of files for security

• The breaking up of files across storage blocks

• The process of compressing files

What is the purpose of defragmentation?

• To delete unnecessary files

• To rearrange fragmented files for faster access

• To compress files

• To encrypt files

What is the main advantage of a hierarchical file system over a flat file system?

• It allows for unlimited file sizes

• It enables better organization through directories and subdirectories

• It automatically compresses files

• It encrypts files for security

In a hierarchical file system, what is the root directory?

• The directory containing all other directories and files

• A directory that stores only text files

• A directory that stores only image files

• A directory that stores only audio files