18 Questions
What is a key characteristic of Discretionary Access Control (DAC)?
It is discretionary and allows the owner to decide who is authorized
In a Linux system, what is the purpose of Access Control Lists (ACLs)?
To provide an additional layer of access control beyond traditional permissions
What is a default ACL associated with?
A directory
What is the limitation of traditional file permissions?
Each file and directory can have only one user and group owner at a time
In which operating systems is DAC typically implemented with ACLs?
Windows and Linux
What is an access ACL associated with?
A specific file or directory
What is the primary purpose of Discretionary Access Control (DAC)?
To specify and enforce access authorization based on user identity
What is the primary function of the Real UserID in Linux?
To define the files that a process can access
What is the purpose of the Effective UserID in Linux?
To enable a non-privileged user to access files that can only be accessed by a privileged user
What is the purpose of the Saved UserID in Linux?
To temporarily switch to a non-privileged account when a process is running with elevated privileges
What is the purpose of Access Control Lists (ACLs)?
To specify the access permissions of a user to a resource
What is the purpose of the 'append' access permission?
To add new content to the end of a resource
What is the primary purpose of setting a default ACL on a directory?
To ensure that new files and directories inherit certain ACLs
How can you add multiple entries with the same command when modifying ACLs?
By separating each entry with a comma
What is the purpose of the Mask entry in an ACL?
To limit the permissions of named users and groups
What type of ACL is used to control access to a file for users not in the user group for the file?
Other ACL
When modifying ACLs on a directory, what is the key difference compared to modifying ACLs on a file?
The inclusion of the execute permission on the list entries
What is the purpose of the getfacl command?
To view the ACL of a file or directory
Learn about Discretionary Access Control (DAC), its implementation with Access Control Lists (ACL), and its use in operating systems like Windows and Linux. Understand how DAC works with file permissions and access control.
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