NS0-093 NetApp Practice Questions
Prepare for NS0-093 with more than an answer.
- Exam fee
- $20 USD
- Level
- Accreditation
- Valid for
- 3 years
Domains covered on the exam 5
- Introduction to NetApp Storage System Architecture and Components20%
- Data Access Protocols and Management20%
- Monitoring, Manageability, and Performance20%
- Troubleshooting Techniques25%
- Advanced Features and ONTAP 9.0 Enhancements15%
- 1
An administrator finds that a node was unexpectedly rebooted overnight. There was no scheduled maintenance. Which TWO log files should be examined first to differentiate between a software panic and a user-initiated reboot command? (Select TWO).
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Correct answer: A, C
The audit log tracks all commands executed on the system, including
rebootorhalt. If a user initiated the reboot, it will be recorded here, along with the user's name and source IP address.The messages log will contain the panic string and stack trace if the reboot was caused by a software or hardware fault. It will also record the normal shutdown sequence for a user-initiated reboot, but the presence of a panic message is the definitive indicator of a crash.
- 2
A support engineer needs to verify the currently installed firmware version for all I/O Modules (IOMs) in a stack of DS460C shelves. Which command will display this specific information?
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Correct answer: C
The
storage shelf show-firmwarecommand is specifically designed to display the firmware versions of various disk shelf components, including the IOMs, across the entire system. It provides a concise summary for verification and troubleshooting purposes. - 3
To enable jumbo frames for optimal performance on a 10GbE network port, the MTU size for that port should be set to ______.
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Correct answer: B
The standard MTU size for jumbo frames is 9000 bytes. This must be configured consistently on the NetApp controller's network port, the physical switch ports, and the client interfaces to function correctly and avoid fragmentation.
- 4
A storage administrator is unable to connect to a node's management LIF via SSH or System Manager. The node is powered on and appears to be serving data, but is unresponsive to in-band management. What is the recommended method for gaining command-line access to troubleshoot the node?
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Correct answer: C
The Service Processor (SP) provides an independent, out-of-band management interface. It has its own network port and IP address, allowing administrators to access the system console, check hardware status, and perform low-level tasks even if ONTAP or its management interface is unresponsive. This is the primary method for remote troubleshooting in such scenarios.
sequenceDiagram participant Admin participant Mgmt_Network as Management Network participant SP as Service Processor (Out-of-Band) participant ONTAP as ONTAP OS (In-Band) Admin->>Mgmt_Network: SSH to Management LIF Mgmt_Network-->>ONTAP: Forward Request ONTAP--xAdmin: No Response (Unresponsive) Admin->>Mgmt_Network: SSH to SP IP Mgmt_Network-->>SP: Forward Request SP-->>Admin: Login Prompt (Success) Admin->>SP: Access System Console - 5
A university is expanding its 4-node AFF A-series cluster by adding two new nodes of the same model. After cabling the new nodes to the cluster interconnect switches and powering them on, the
cluster showcommand indicates that the cluster interconnect health is degraded. All physical links are up, and the new nodes are visible but cannot join the cluster properly.The existing cluster uses two Cisco Nexus switches for the interconnect. The network team confirms they copied the port configuration from an existing cluster port to the new ports being used by the new nodes. All ports are configured as access ports on the same VLAN.
What is the most likely configuration error preventing the new nodes from integrating correctly?
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Correct answer: D
NetApp cluster interconnect switches require specific configurations for stable operation. A common error when adding nodes is forgetting to apply settings like portfast (which allows the port to transition to forwarding state immediately) and disabling spanning-tree protocol (which can cause ports to be blocked during convergence). Even if VLAN and other settings are copied, missing these critical settings can cause discovery and communication delays that lead to a degraded health status.
- 6
A field engineer is onsite to replace a failed hot-swappable Power Supply Unit (PSU) in a DS224C disk shelf that is part of a production AFF A250 system. The system must remain online during the procedure. After physically identifying the failed PSU by its amber fault LED, what is the correct next step to ensure a safe and non-disruptive replacement?
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Correct answer: B
DS224C PSUs are fully redundant and hot-swappable. The correct procedure is to disconnect the power source from the failed unit, allow a brief period for it to power down completely, and then physically remove it. The redundant PSU will maintain power to the shelf. Placing the node in maintenance mode or taking the shelf offline is unnecessary and would cause an outage.
- 7
An administrator reports that a node in an AFF A400 cluster is unable to achieve cluster quorum after an unscheduled reboot. The other nodes in the cluster are healthy. The
cluster showcommand output indicates the node is unhealthy and cannot communicate with its peers. Which TWO of the following are the most likely causes for this issue? (Select TWO).Show answer details
Correct answer: A, C
A VLAN mismatch will prevent the node from communicating with other nodes over the cluster network, directly impacting its ability to join the quorum.
A physical layer issue, such as a bad cable or SFP, is a primary cause for a single node to lose connectivity to the cluster interconnect, preventing it from participating in the quorum.
- 8
An administrator needs to collect detailed, real-time performance statistics for a specific LUN named 'SQL_LUN_01' that is reportedly experiencing high latency. The goal is to view the IOPS, throughput, and latency broken down by read, write, and other operations. Which command should the administrator use?
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Correct answer: D
The
qos statistics lun performance showcommand provides detailed, real-time performance data for a specific LUN, including IOPS, throughput, and latency. This is the correct tool for investigating performance at the individual LUN level. The other commands either provide less detail, operate at a different object level (like volume), or are legacy/incorrect syntax. - 9
A financial services company runs a mixed workload on a single SVM hosted on a FAS8300 cluster running ONTAP 9.12.1. The IT department has received complaints about poor performance from users accessing SMB shares. Simultaneously, an automated NFS-based data ingestion process runs on the same SVM. A network administrator confirms there are no dropped packets on the switches connecting the storage to the clients.
A junior storage administrator provides the following details:
- The SVM has a single data LIF serving both SMB and NFS traffic.
- The LIF is part of a single-port interface group using port e0c.
- The NFS data ingestion workload is known to be very aggressive, often saturating the network link.
- EMS logs show frequent messages indicating that the
gNFS_ExQoS policy, which has no throughput limit, is being used by the NFS clients. - SMB clients are not governed by any specific QoS policy.
What is the most likely cause of the poor SMB performance?
graph TD subgraph Corporate Network SMB_Clients[SMB Clients] --> Switch NFS_Client[NFS Data Ingestion Client] --> Switch end subgraph FAS8300 Cluster Switch --> e0c[Port e0c] e0c --> LACP[ifgrp a0a] LACP --> DataLIF[Data LIF: 192.168.10.100] DataLIF --> SVM end SVM -- Serves --> SMB_Share[SMB Share] SVM -- Serves --> NFS_Export[NFS Export] NFS_Client -- Aggressive Traffic --> NFS_Export SMB_Clients -- Slow Access --> SMB_ShareShow answer details
Correct answer: B
The core issue is resource contention on the shared network path (port e0c and the single data LIF). The aggressive NFS workload has no QoS limits, allowing it to consume all available network bandwidth. This creates a 'noisy neighbor' problem, where the SMB traffic cannot get sufficient bandwidth, resulting in high latency and poor performance. The solution would be to apply a QoS ceiling to the NFS workload or create separate network paths/LIFs for each protocol.
- 10
True or False: During an unplanned takeover in a NetApp HA pair, the surviving node replays the contents of its local NVLOG to commit writes that were in-flight on the failed node.
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Correct answer: B
This statement is false. The surviving node replays the contents of the FAILED node's NVRAM, which is mirrored synchronously over the HA interconnect. The surviving node's own NVLOG contains its own in-flight writes, not the partner's. This process ensures that no acknowledged writes are lost during the failover.
