NS0-593 NetApp Certified Support Engineer - ONTAP Specialist (NCSE ONTAP) Practice Questions
Prepare for NS0-593 with more than an answer.
- Exam fee
- $200 USD
- Level
- Specialist
- Valid for
- 24 months
Domains covered on the exam 4
- ONTAP OS25%
- Hardware25%
- Protocols25%
- Performance25%
- 1
When troubleshooting a persistent WAFL inconsistency on a volume after a severe ungraceful shutdown, a NetApp Support engineer instructs the administrator to run a WAFLiron. Which of the following statements is true regarding the execution of WAFLiron in ONTAP 9?
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Correct answer: C
WAFLiron is a highly intrusive, advanced filesystem repair tool used to fix WAFL metadata inconsistencies. It requires the aggregate to be offline (making the data inaccessible) and can potentially result in data loss if run incorrectly. Therefore, it is strictly recommended to run WAFLiron only under the guidance of NetApp Support.
- 2
A hardware technician is preparing to update the firmware on the Service Processor (SP) of an ONTAP node. What is the recommended best practice to ensure the node remains highly available during this process?
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Correct answer: B
The Service Processor (SP) is an out-of-band management controller that runs independently of the main ONTAP operating system. Updating the SP firmware reboots the SP itself but does not disrupt the ONTAP OS or data serving operations. Therefore, it is a non-disruptive procedure.
- 3
A support engineer is troubleshooting a cluster interconnect issue on a pair of Broadcom BES-53248 switches. Node 2 is reporting degraded cluster connectivity. The engineer wants to verify the switch port state and statistics. Which command allows the engineer to gather this information directly from the ONTAP CLI without logging into the switch?
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Correct answer: D
ONTAP provides the Cluster Switch Management System (CSMS) to monitor and manage cluster interconnect switches. The command 'system cluster-switch show' (and its subcommands like 'system cluster-switch port show') allows the administrator to view switch health, port status, and firmware versions directly from the ONTAP CLI.
- 4
A storage administrator is investigating an issue where a 4-node ONTAP 9.12.1 cluster experienced a temporary split-brain scenario due to an interconnect switch failure. The administrator notices that one specific node played a critical role in maintaining cluster operations. Which of the following ONTAP OS concepts provides the tie-breaking mechanism in an evenly numbered cluster?
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Correct answer: B
In an ONTAP cluster, quorum is maintained when more than half of the eligible voting nodes are healthy and communicating. In clusters with an even number of nodes, epsilon is assigned to one node to provide an extra fractional vote (tie-breaker) to prevent a split-brain scenario.
- 5
A support engineer receives an alert regarding a high lag time on a SnapMirror relationship between a primary AFF A400 cluster and a secondary FAS8300 cluster. The engineer runs the 'snapmirror show' command and observes that the state is 'Snapmirrored' and the status is 'Idle'. Which two factors are the most likely causes of the increasing lag time? (Select TWO)
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Correct answer: D, E
If the relationship status is 'Idle', it means no transfer is currently attempting to run. Therefore, network bandwidth degradation is not the immediate cause of the idle state (it would show as 'Transferring' for a long time). An idle state with increasing lag time typically indicates that the schedule is not triggering the updates, or the source volume is not generating new snapshots to trigger the update.
If the relationship status is 'Idle', it means no transfer is currently attempting to run. Therefore, network bandwidth degradation is not the immediate cause of the idle state (it would show as 'Transferring' for a long time). An idle state with increasing lag time typically indicates that the schedule is not triggering the updates, or the source volume is not generating new snapshots to trigger the update.
- 6
During an ONTAP OS upgrade on an HA pair, the node 'Node-1' suddenly panics and reboots. The storage architect needs to investigate the root cause of this disruption. Which of the following statements accurately describes how ONTAP handles the panic data, and what the architect should look for?
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Correct answer: D
When an ONTAP node panics, it dumps its memory contents to a core file on the local root volume during the boot process (saving core). The 'system node coredump show' command is used to view these generated core dumps, which can then be uploaded to NetApp support for root-cause analysis.
flowchart LR A[Node Panic] --> B[Reboot Sequence Initiated] B --> C[Memory Dumped to Local Root Vol] C --> D[System Node Coredump Show] D --> E[Upload to NetApp Support]
