File System Permissions Quiz

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Questions and Answers

Which type of permissions are widely available in most file systems?

  • System, Owner, Group, and World permissions
  • Read and Write permissions
  • Execute and Delete permissions
  • POSIX file system permissions and access-control lists (ACLs) (correct)

What is the per-file attribute in the original File Allocation Table (FAT) file system?

  • Read-only (correct)
  • Execute-only
  • Write-only
  • Delete-only

Which file system uses ACLs to provide a complex set of permissions?

  • OpenVMS
  • NTFS (correct)
  • POSIX
  • FAT

What kind of user interface is referred to as permission-driven?

<p>Permission-driven interface (B)</p> Signup and view all the answers

How many categories of access permissions are there in the OpenVMS file system?

<p>Four (A)</p> Signup and view all the answers

Which types of permissions are widely available in most file systems?

<p>POSIX file system permissions and ACLs (D)</p> Signup and view all the answers

What is the per-file attribute in the original File Allocation Table (FAT) file system?

<p>Read-only attribute (A)</p> Signup and view all the answers

Which file system uses a permission scheme similar to that of Unix?

<p>OpenVMS (B)</p> Signup and view all the answers

How many categories of access permissions are there in the OpenVMS file system?

<p>4 (C)</p> Signup and view all the answers

What kind of user interface is referred to as permission-driven?

<p>Menu-driven interface (C)</p> Signup and view all the answers

Which operating system heavily inspired Linux namespaces?

<p>Plan 9 from Bell (D)</p> Signup and view all the answers

What is the main purpose of namespaces in the Linux kernel?

<p>To partition kernel resources (A)</p> Signup and view all the answers

Which of the following is NOT an example of a resource that can exist in multiple namespaces?

<p>File sizes (A)</p> Signup and view all the answers

What is the term 'namespace' often used for in the context of Linux?

<p>A particular space of names (A)</p> Signup and view all the answers

How does a Linux system start out in terms of namespaces?

<p>With a single namespace of each type (C)</p> Signup and view all the answers

Which of the following is an example of a resource that can exist in multiple namespaces?

<p>Process IDs (B)</p> Signup and view all the answers

What is the main purpose of namespaces in the Linux kernel?

<p>To partition kernel resources (D)</p> Signup and view all the answers

What inspired the development of Linux namespaces?

<p>Plan 9 from Bell (D)</p> Signup and view all the answers

How does a Linux system start out in terms of namespaces?

<p>With a single namespace of each type (D)</p> Signup and view all the answers

What is a fundamental aspect of containers in Linux?

<p>Namespaces (A)</p> Signup and view all the answers

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Study Notes

File System Permissions

  • Common permissions across most file systems include read, write, and execute.
  • The original File Allocation Table (FAT) file system allows for a per-file attribute known as the "hidden" attribute.
  • Access Control Lists (ACLs) are used by file systems like NTFS to manage intricate permission settings.
  • Unix-style permission schemes are implemented in file systems such as ext3 and ext4.

OpenVMS File System

  • OpenVMS file system features three categories of access permissions: owner, group, and world.

User Interfaces and Permissions

  • A permission-driven user interface offers options and access based on the user's permissions and roles.

Linux Namespaces

  • Linux namespaces were heavily inspired by the features of the Solaris operating system.
  • The main purpose of namespaces in the Linux kernel is to isolate processes, allowing multiple instances of resources without conflict.
  • The term 'namespace' commonly refers to a logical container for those resources that helps organize and separate them in the Linux environment.
  • On initialization, a Linux system starts within a default set of namespaces, typically sharing certain resources with the host.
  • An example of a resource existing in multiple namespaces includes network interfaces, which can be virtualized.
  • A fundamental aspect of Linux containers is their ability to use namespaces to create lightweight, isolated user-space instances.

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