File System and Features

Question 1

What’s a File System? What are various types depending on OS?

Answer 1

• Is a method or technology within an OS as to how files/folders and data are stored within a storage device such as HDD, SSD.
• NTFS for windows, FAT32, EXT4 for linux, HFS+ for MacOS.

Question 2

What do the following features within an file system do?
* Compression. How’s it achieved?
* Encryption.
* Permissions.
* Journalling.

Answer 2

• Compression is the reduction of files stored on a disk to allow for more storage. Done via 7zip or other ways of generating zip files.
• Encryption is ensuring that data,files or disk space is secured and encrypted byy converting it into a format that can only be read with the correct decryption key.
• Permissions is assigning users certain permissions to access data, files/folders or services.
• Journalling is generating logs to keep track of file system changes; useful in recovery from unexpected failures.

Question 3

What’s a folder and directory?

Answer 3

• Folder is a container that stores files within.
• Directory is how files/folders are saved and organised within a filesystem.

Question 4

What’s a file extension?

Answer 4

Is a suffix added to a file that determines what type of a file a file is and what apps can run it.

Question 5

What are attributes and permissions?

Answer 5

• Attributes are metadata associated with computer file that also states it’s properties. e.g: Read Only, Hidden, Archive, System.
• Permissiosn determines who can access a file and what they can do with it. E.g: Full Control, Modify, Read/List/Execute.