How does the NTFS directory s

Answer:The NTFS namespace is organized as a hierarchy of directories where each directory uses a B+ tree data structure to store an index of the filenames in that directory.The index root of a directory contains the top level of the B+tree.Each entry in the directory contains the name and file reference of the file as well as the update timestamp and file size.The Unix operating system simply stores a table of en-tries mapping names to i-node numbers in a directory file.Lookups

and updates require a linear scan of the directory structure in Unix systems.