Questions and Answers
Which type of permissions are widely available in most file systems?
What is the per-file attribute in the original File Allocation Table (FAT) file system?
Which file system uses ACLs to provide a complex set of permissions?
What kind of user interface is referred to as permission-driven?
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How many categories of access permissions are there in the OpenVMS file system?
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Which types of permissions are widely available in most file systems?
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What is the per-file attribute in the original File Allocation Table (FAT) file system?
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Which file system uses a permission scheme similar to that of Unix?
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How many categories of access permissions are there in the OpenVMS file system?
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What kind of user interface is referred to as permission-driven?
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Which operating system heavily inspired Linux namespaces?
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What is the main purpose of namespaces in the Linux kernel?
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Which of the following is NOT an example of a resource that can exist in multiple namespaces?
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What is the term 'namespace' often used for in the context of Linux?
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How does a Linux system start out in terms of namespaces?
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Which of the following is an example of a resource that can exist in multiple namespaces?
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What is the main purpose of namespaces in the Linux kernel?
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What inspired the development of Linux namespaces?
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How does a Linux system start out in terms of namespaces?
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What is a fundamental aspect of containers in Linux?
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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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Description
Test your knowledge on file system permissions and learn about the different attributes that control user access to files and directories. Explore the concept of permission-driven user interfaces and discover the two widely available types of permissions in the POSIX file system.
