LPI LPIC-3 (306-300) Certification Sample Questions
The purpose of this Sample Question Set is to provide you with information about the LPI High Availability and Storage Clusters exam. These sample questions will make you very familiar with both the type and the difficulty level of the questions on the 306-300 certification test. To get familiar with real exam environment, we suggest you try our Sample LPI LPIC-3 Certification Practice Exam. This sample practice exam gives you the feeling of reality and is a clue to the questions asked in the actual LPIC-3 High Availability and Storage Clusters certification exam.
These sample questions are simple and basic questions that represent likeness to the real LPI 306-300 exam questions. To assess your readiness and performance with real time scenario based questions, we suggest you prepare with our Premium LPI LPIC-3 Certification Practice Exam. When you solve real time scenario based questions practically, you come across many difficulties that give you an opportunity to improve.
LPI 306-300 Sample Questions:
01. When a partition loses quorum, it should keep running the resources it already has, because many clients can still reach that side. While it remains without quorum, however, it must not start, move or recover any resource.
Which crmsh command configures this behavior?
a) crm configure property no-quorum-policy=stop
b) crm configure property no-quorum-policy=ignore
c) crm configure property no-quorum-policy=suicide
d) crm configure property no-quorum-policy=freeze
02. From the admin node you ran ceph-deploy new node1, ceph-deploy install node1 node2, ceph-deploy mon create-initial and ceph-deploy osd create --data /dev/sdb node2. On node2, /etc/ceph/ceph.conf is present, but ceph -s fails with an error that no keyring for client.admin was found.
Which command fixes this?
a) ceph-deploy admin node2
b) ceph-deploy gatherkeys node1
c) ceph-deploy config push node2
d) ceph-deploy mon add node2
03. After an unclean power loss, all OSDs are up and every PG of the pool archive reports active+clean. Because the pool holds compliance records, you want Ceph to verify PG 6.2c's object data itself, reading every replica in full and comparing checksums, not just comparing object metadata. The check must only report problems and must not rewrite any copy.
Which command starts this check?
a) ceph pg scrub 6.2c
b) ceph pg deep-scrub 6.2c
c) ceph pg repair 6.2c
d) ceph-bluestore-tool fsck --deep --path /var/lib/ceph/osd/ceph-6
04. Two keepalived nodes are meant to act as one VRRP pair for the virtual IP 192.0.2.50. After a maintenance window, ip addr shows 192.0.2.50 on both nodes and each node logs that it has entered MASTER state, although the nodes can still ping each other.
Which conditions would each cause this?
(Choose TWO correct answers.)
a) A host firewall drops IP protocol 112 traffic between the two nodes
b) The two nodes use different priority values in the instance
c) The BACKUP node has nopreempt set in its vrrp_instance
d) The two nodes use different virtual_router_id values
e) The two nodes use the same advert_int value in the instance
05. Each OSD host has HDDs and SSDs, and ceph osd tree already shows the right hdd or ssd value in the CLASS column for every OSD. The existing pool hotpool (size 3) uses the default replicated rule and must be moved onto SSD OSDs only, still keeping one copy per host.
Which two commands achieve this?
(Choose TWO correct answers.)
a) ceph osd crush add-bucket fast root
b) ceph osd crush set-device-class ssd osd.4 osd.5 osd.6
c) ceph osd crush rule create-replicated fast default host ssd
d) ceph osd pool application enable hotpool ssd
e) ceph osd pool set hotpool crush_rule fast
06. osd.7 on osd-host-2 reports a rising count of reallocated sectors but is still up and serving I/O. Every pool is replicated with size 3. You must remove osd.7 from the cluster without any object ever dropping below three copies during the work.
Which procedure meets this requirement?
a) Run ceph osd out 7 with the daemon still running, wait for active+clean, then stop the daemon and purge the OSD
b) Stop the osd.7 daemon, wait until every PG reports active+clean again, then purge the OSD from the cluster
c) Set noout, stop the osd.7 daemon and purge the OSD, then unset noout and let backfill finish
d) Run ceph osd down 7, wait for active+clean, then stop the daemon and purge the OSD
07. gluster volume info gv0 reports Type: Distributed-Replicate and Number of Bricks: 2 x 3 = 6. To add capacity, an administrator runs gluster volume add-brick gv0 srv7:/data/b1 srv8:/data/b1 on srv1, where srv7 and srv8 are already peers, and the command is rejected.
Which change lets the expansion succeed while every file keeps three copies?
a) Append replica 2 to the command so the two bricks form a two-way set
b) Append force to the command so glusterd accepts a partial set
c) Start gluster volume rebalance gv0 first, then repeat the command
d) Include a third new brick in the command, then run a rebalance
08. A trusted storage pool consists of srv1, srv2 and srv3, which serve the volume gv0. On the newly installed server srv4, glusterd is running and the firewall allows Gluster traffic. The administrator runs gluster peer probe srv1 on srv4, and the probe fails with a message that srv1 is already part of another cluster.
What adds srv4 to the existing pool?
a) Run gluster peer probe srv4 on srv1, srv2 or srv3 instead
b) Run gluster peer probe srv2 on srv4, targeting a different pool member
c) Restart glusterd on srv4 and run the same probe once it is back up
d) Run gluster peer detach srv1 on srv4 first
09. LINSTOR manages DRBD 9 resources across five nodes. The node running the LINSTOR controller suffers a hardware fault and stays down for an hour. The satellites and their DRBD resources are not affected by the fault itself.
What happens to the DRBD-replicated volumes during that hour?
a) They are demoted to Secondary on every node until the LINSTOR controller is reachable again
b) They keep replicating and serving I/O; only creating or changing resources must wait
c) Replication stops and every DRBD connection goes StandAlone until the controller returns
d) One satellite promotes itself to controller and continues serving linstor commands
10. Before a firmware update on osd-host-4, an administrator ran ceph osd set noout. The update failed, and the host will stay offline for the rest of the day. ceph -s now shows:
health: HEALTH_WARN
noout flag(s) set
1 host (4 osds) down
Degraded data redundancy: 41290/1238700 objects degraded (3.333%), 96 pgs degraded, 96 pgs undersized
The surviving hosts have ample free space, yet hours later no recovery or backfill is in progress. What explains this?
a) Degraded placement groups wait for a deep scrub of the surviving copies before recovering
b) Recovery is paused, as the monitors lose quorum when a whole host of OSDs goes down
c) The down OSDs remain in while noout is set, so CRUSH keeps mapping their placement groups to them
d) Each pool's min_size must be lowered first, so recovery can read from a single copy
Answers:
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Question: 01 Answer: d |
Question: 02 Answer: a |
Question: 03 Answer: b |
Question: 04 Answer: a, d |
Question: 05 Answer: c, e |
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Question: 06 Answer: a |
Question: 07 Answer: d |
Question: 08 Answer: a |
Question: 09 Answer: b |
Question: 10 Answer: c |
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