350-601 · Question #71
What is a feature of NFS?
The correct answer is B. Kerberos-based security model. A key security feature of modern NFS (Network File System) versions, particularly NFSv4 and later, is its support for a Kerberos-based security model, providing strong authentication, integrity, and privacy for file access.
Question
What is a feature of NFS?
Exhibit
Options
- Azone-based access control
- BKerberos-based security model
- Cblock-based file access
- Drole-based access control
How the community answered
(18 responses)- B89% (16)
- C6% (1)
- D6% (1)
Why each option
A key security feature of modern NFS (Network File System) versions, particularly NFSv4 and later, is its support for a Kerberos-based security model, providing strong authentication, integrity, and privacy for file access.
Zone-based access control is a feature primarily associated with network security devices like firewalls for traffic segmentation, not a native security model within the NFS protocol for file access.
Modern versions of NFS, specifically NFSv4 and later, integrate support for Kerberos as a robust security mechanism, allowing for strong authentication, data integrity, and privacy through encryption when accessing shared file systems.
NFS operates at the file level, providing client access to files and directories, which contrasts with block-based access protocols like iSCSI or Fibre Channel that expose raw storage blocks.
While operating systems accessing NFS shares can implement role-based access control (RBAC), RBAC is not an inherent security model within the NFS protocol itself; NFS relies on traditional UNIX-like permissions, and NFSv4 introduced ACLs and Kerberos for authentication, not an internal RBAC system.
Concept tested: NFS security features, Kerberos integration
Source: https://docs.microsoft.com/en-us/windows-server/storage/nfs/nfs-overview
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