20 Questions
What is the primary purpose of mounting a file system?
To allow access to the file system
What is the main benefit of using a distributed file system?
Allowing files to be shared across a network
What is the primary function of the Network File System (NFS)?
To allow file sharing across a network
What is the purpose of a mount point?
To specify the location of a file system
What is the advantage of using a stateless protocol like NFS?
Easy recovery from failure
What is the purpose of access lists and groups?
To control file access permissions
What is the benefit of using a protection scheme?
Control over file access permissions
What is the purpose of a cycle detection algorithm in file systems?
To detect and prevent cycles
What is the main difference between Unix file system (UFS) and Andrew File System (AFS) semantics?
UFS has session semantics, AFS does not
What is the purpose of User IDs and Group IDs in file systems?
To identify users and groups for access control
What type of file organization allows for logical grouping of files by properties?
Tree-structured directories
What is the purpose of the file-open count in the open-file table?
To allow removal of data from the open-file table when the last process closes it
What type of file system organization allows for shared subdirectories and files?
Acyclic-graph directories
What is the purpose of backpointers in acyclic-graph directories?
To allow deletion of all pointers when a directory is deleted
What is the term for the process of moving the content of a file from disk to memory?
Open
What is the purpose of the file pointer in the open-file table?
To keep track of the last read/write location
What type of file system organization allows for efficient searching and grouping of files by properties?
Tree-structured directories
What is the term for the collection of nodes containing information about all files?
Directory structure
What is the purpose of the file type attribute in a file system?
To determine the appropriate actions to take when a file is accessed
What is the term for the process of moving the content of a file from memory to disk?
Close
This quiz covers the concepts of file systems, including file concept, access methods, directory structure, file-system mounting, and file sharing. It also discusses file-system design tradeoffs and protection. Based on the 8th edition of Operating System Concepts by Silberschatz, Galvin, and Gagne.
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