NS0-157 · Question #310
UNIX allows file access based on___________.
The correct answer is C. GID or UID and UNIX permissions.. UNIX file access is governed by UID/GID identifiers combined with the traditional read/write/execute permission bits assigned to owner, group, and others.
Question
UNIX allows file access based on___________.
Options
- ANT ACLs and UNIX permissions.
- BNT ACLs and SID.
- CGID or UID and UNIX permissions.
- DGID or UID and ACLs.
How the community answered
(33 responses)- B3% (1)
- C94% (31)
- D3% (1)
Why each option
UNIX file access is governed by UID/GID identifiers combined with the traditional read/write/execute permission bits assigned to owner, group, and others.
NT ACLs are a Windows-specific access control mechanism and are not native to UNIX file access; UNIX does not use NT ACLs by default.
SIDs (Security Identifiers) are Windows constructs used in NT ACLs and Active Directory; they have no role in native UNIX file permission evaluation.
UNIX uses a combination of the User ID (UID) and Group ID (GID) to identify a process's identity, and then evaluates the standard UNIX permission bits (rwx for owner, group, and other) to determine access. This model is fundamental to all UNIX and Linux systems and is distinct from Windows-style ACL-based access control.
While GID and UID are correct identifiers, ACLs are not part of the traditional UNIX permission model - standard UNIX uses permission bits, not ACLs, unless POSIX ACLs are explicitly enabled.
Concept tested: UNIX UID/GID-based file permission model
Source: https://docs.netapp.com/us-en/ontap/nfs-admin/unix-file-permissions-concept.html
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