303-300 · Question #69
Which of the following authentication methods was added to NFS in version 4?
The correct answer is A. Kerberos authentication. NFSv4 introduced native Kerberos authentication support as a major security enhancement over earlier versions, which relied on weak UID/GID-based trust mechanisms. Kerberos provides strong cryptographic identity verification, making it the standard secure auth method in NFSv4…
Question
Which of the following authentication methods was added to NFS in version 4?
Options
- AKerberos authentication
- BSSH hostkey authentication
- CWinbind authentication
- DSSL certificate authentication
How the community answered
(39 responses)- A87% (34)
- B8% (3)
- C3% (1)
- D3% (1)
Explanation
NFSv4 introduced native Kerberos authentication support as a major security enhancement over earlier versions, which relied on weak UID/GID-based trust mechanisms. Kerberos provides strong cryptographic identity verification, making it the standard secure auth method in NFSv4 deployments. SSH host key authentication (B) is specific to the SSH protocol and has no role in NFS. Winbind (C) is a Samba component used for Windows/AD integration and is not an NFS authentication mechanism. SSL certificate authentication (D) is used in protocols like HTTPS/TLS, not native NFS. Memory tip: Think "NFSv4 needs Kerberos" - both are enterprise-grade, and Kerberos (developed at MIT) was the natural fit when NFSv4 was designed to meet enterprise security requirements.
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