An organization requires NFSv4 mounts to authenticate users via Kerberos. The administrator has set up the KDC and created service principals for the NFS server. On the client, the user can obtain a ticket-granting ticket, but mounting the NFS share fails with an authentication error. Which step is most likely missing?

Restarting the NFS server after modifying /etc/krb5.conf.

Adding the client's host principal to the server's /etc/exports with the 'sec=krb5' option.

Creating a keytab file on the client for the NFS service principal.

Setting the 'sync' option on the export to ensure write operations are committed.

An administrator needs to copy NFSv4 ACLs from one file to another on the same NFSv4 share. Which command should be used?

nfs4_setfacl -a source.txt target.txt

nfs4_getfacl source.txt | nfs4_setfacl -S - target.txt

getfacl source.txt | setfacl --set-file=- target.txt

LPIC-3 Security

Domain 3Objective 3

327.3 Network File Systems (weight: 3) LPIC-3-SECURITY Practice Questions (Page 5)

Part of the Topic 327: Access Control domain, which makes up ~19% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–11 in this domain), expect 2–4 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

30questions here

6free pages

10concepts

Questions 21–25

21application · medium
An organization requires NFSv4 mounts to authenticate users via Kerberos. The administrator has set up the KDC and created service principals for the NFS server. On the client, the user can obtain a ticket-granting ticket, but mounting the NFS share fails with an authentication error. Which step is most likely missing?
Select an answer first
22foundation · easy
Which CIFS security mode requires a Key Distribution Center (KDC)?
Select an answer first
23foundation · easy
Which mount option enables CIFS Unix Extensions?
Select an answer first
24application · medium
An administrator needs to copy NFSv4 ACLs from one file to another on the same NFSv4 share. Which command should be used?
Select an answer first
25application · medium
A client workstation mounts an NFSv4 share with the default options. The user reports that files created on the client appear with incorrect ownership on the server. The server uses Kerberos for authentication. Which mount option is most likely missing?
Select an answer first

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327.3 Network File Systems (weight: 3) LPIC-3-SECURITY Practice Questions (Page 5)

Questions 21–25

Which CIFS security mode requires a Key Distribution Center (KDC)?

Which mount option enables CIFS Unix Extensions?

An administrator needs to copy NFSv4 ACLs from one file to another on the same NFSv4 share. Which command should be used?

A client workstation mounts an NFSv4 share with the default options. The user reports that files created on the client appear with incorrect ownership on the server. The server uses Kerberos for authentication. Which mount option is most likely missing?

Keep studying — Topic 327: Access Control