NS0-594 sample questions

Question 1

A storage support engineer is investigating unexpected warning messages on an ONTAP 9 cluster. When running the command 'event log show' with no additional parameters, which event severity levels are displayed by default?

Accepted Answer

EMERGENCY, ALERT, and ERROR

Answer

EMERGENCY, ALERT, ERROR, and NOTICE

Answer

All severity levels from DEBUG to EMERGENCY

Answer

Only EMERGENCY and ALERT

Question 2

During an unscheduled maintenance call, an engineer needs to immediately generate and transmit a full diagnostic telemetry bundle for node-01 to NetApp Active IQ support without waiting for the scheduled weekly transmission. Which ONTAP CLI command performs this task?

Accepted Answer

system node autosupport invoke -node node-01 -type all -message "Case_12345"

Answer

system node autosupport transmit -node node-01 -priority urgent -include-all

Answer

system support bundle generate -node node-01 -destination netapp-support

Answer

system health alert autosupport-send -node node-01 -level full

Question 3

A 4-node ONTAP cluster experiences a dual-link failure on the dedicated cluster interconnect network, isolating node-03 and node-04 from node-01 and node-02. Node-01 holds cluster epsilon. How does cluster quorum resolve this partition?

Accepted Answer

Nodes node-01 and node-02 maintain quorum because node-01 possesses epsilon, giving their partition 2.5 votes out of 4; node-03 and node-04 drop out of quorum.

Answer

All four nodes remain in quorum because each 2-node HA pair operates independently of cluster-wide voting.

Answer

All nodes drop out of quorum immediately to prevent split-brain until manual intervention re-establishes connectivity.

Answer

Nodes node-03 and node-04 assume master status because epsilon is automatically transferred to the partition with higher disk I/O.

Question 4

A support specialist observes that the command 'cluster ring show' indicates the 'mgwd' unit is offline or in a master-less state across two nodes in an 8-node cluster, while all other rings (vldb, vifmgr, bcom) show healthy quorum.

```mermaid
flowchart TD
subgraph RDB_Rings [Replicated Database Rings]
VLDB[VLDB: In Quorum / Master Elected]
VIFMGR[VIFMGR: In Quorum / Master Elected]
BCOM[BCOM: In Quorum / Master Elected]
MGWD[MGWD: Offline / Quorum Lost]
end
RDB_Rings --> Effect{Impact on Storage System}
```

What is the direct operational impact on the ONTAP cluster?

Accepted Answer

Administrative CLI/API/System Manager commands fail or become unresponsive on affected nodes, but SAN/NAS data traffic continues uninterrupted.

Answer

All NAS data LIFs are immediately taken offline, causing widespread CIFS and NFS disconnections across the entire cluster.

Answer

The nodes initiate an uncoordinated panic reboot because the kernel heartbeats depend strictly on mgwd ring health.

Answer

SnapMirror replication relationships fail over permanently to asynchronous mode regardless of configuration.

Question 5

A scheduled SnapMirror asynchronous update operation repeatedly fails with the status error: 'Transfer failed. (Cannot find common Snapshot copy between source and destination)'. Which troubleshooting workflow is required to restore replication while preserving destination retention history if possible?

Accepted Answer

Inspect the source volume snapshot list; if an older snapshot matching the destination base still exists, restore commonality, or execute a 'snapmirror resync' using an existing valid base snapshot.

Answer

Execute 'snapmirror abort -hard' on the destination cluster to force ONTAP to dynamically synthesize a base snapshot.

Answer

Increase the SnapMirror transfer window size on the intercluster LIFs to bypass snapshot validation.

Answer

Delete all snapshots on the destination volume and restart the ONTAP mgwd process on the source node.

Question 6

When diagnosing a failing SnapMirror relationship across two peered clusters, an engineer executes 'cluster peer health show' and discovers that Ping Status shows 'reachable' but Data Operation Status reports 'unreachable' on node-02. What is the most probable root cause?

Accepted Answer

ICMP traffic is permitted between intercluster LIFs, but TCP port 11104 or 11105 is blocked by an intermediate firewall.

Answer

The node-02 cluster interconnect switches are configured with jumbo frames (MTU 9000).

Answer

SnapMirror licenses are expired on the source cluster controller.

Answer

The SVM peer permission was configured with read-only access instead of data-protection access.

Free NS0-594 sample questions

A storage support engineer is investigating unexpected warning messages on an ONTAP 9 cluster. When running the command 'event log show' with no additional parameters, which event severity levels are displayed by default?

During an unscheduled maintenance call, an engineer needs to immediately generate and transmit a full diagnostic telemetry bundle for node-01 to NetApp Active IQ support without waiting for the scheduled weekly transmission. Which ONTAP CLI command performs this task?

A 4-node ONTAP cluster experiences a dual-link failure on the dedicated cluster interconnect network, isolating node-03 and node-04 from node-01 and node-02. Node-01 holds cluster epsilon. How does cluster quorum resolve this partition?

When diagnosing a failing SnapMirror relationship across two peered clusters, an engineer executes 'cluster peer health show' and discovers that Ping Status shows 'reachable' but Data Operation Status reports 'unreachable' on node-02. What is the most probable root cause?

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