NTFS allows file access based on which components?

NTFS allows file access based on which components?

• A. NT ACLs and SID.
• B. NT ACLs and UNIX permissions.
• C. SID and password.
• D. UNIX permissions.

Answer: (A)

NTFS file access decisions come from the file’s security descriptor, specifically the NTFS ACL that lists permissions for security principals identified by SIDs. When you try to access a file, Windows uses the DACL on that file to determine whether your security identifier (SID) — which represents you or a group you belong to — has the rights requested (read, write, execute, etc.). Authentication (like a password) confirms identity, but authorization for a given file is determined by the ACL entries associated with SIDs. UNIX permissions don’t apply to NTFS, and a password isn’t used to grant file access directly, so the only components that govern NTFS access are NT ACLs and SIDs.

NTFS file access decisions come from the file’s security descriptor, specifically the NTFS ACL that lists permissions for security principals identified by SIDs. When you try to access a file, Windows uses the DACL on that file to determine whether your security identifier (SID) — which represents you or a group you belong to — has the rights requested (read, write, execute, etc.). Authentication (like a password) confirms identity, but authorization for a given file is determined by the ACL entries associated with SIDs.

UNIX permissions don’t apply to NTFS, and a password isn’t used to grant file access directly, so the only components that govern NTFS access are NT ACLs and SIDs.