NS0-509 NetApp Certified Implementation Engineer\xe2\x80\x94san Specialist Practice Questions
Prepare for NS0-509 with more than an answer.
- Level
- Specialist
- Valid for
- 3 years
Domains covered on the exam 4
- ONTAP SAN Solution Assessment25%
- ONTAP SAN Concepts25%
- ONTAP SAN Implementation and Configuration35%
- ONTAP SAN Implementation Testing and Troubleshooting15%
- 1
True or False: In a standard ONTAP HA pair configuration, all FCP LIFs belonging to a single SVM must reside on ports of the same node.
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Correct answer: B
This statement is false. For high availability and load balancing, it is a best practice to create FCP LIFs for a single SVM on ports across both nodes of the HA pair. This allows for non-disruptive takeover and failover, as the partner node already has active paths to serve data if the home node becomes unavailable.
- 2
An administrator is investigating a connectivity issue where a new ESXi host cannot see its assigned LUNs. The physical connectivity is confirmed, and the FC switch zoning is correct. The
lun mapping showcommand confirms the LUN is mapped to the correct igroup. However, the host is still not listed in theigroup show -vcommand output. What is the most likely cause of this problem?Show answer details
Correct answer: C
The
igroup show -vcommand displays initiators that are currently logged in to the target. If the initiators are not listed despite correct zoning and physical connectivity, it often points to a mismatch in theostypeof the igroup. For example, if theostypeis set towindowsbut the initiator is an ESXi host, ONTAP may not correctly handle the login process, preventing the host from being listed as logged in and seeing its LUNs. - 3
A manufacturing company is setting up a new ONTAP cluster in a physically secure but environmentally harsh location with inconsistent power. The solution design must prioritize data integrity and consistency above all else. Which LUN configuration setting helps ensure that writes are committed to stable storage before acknowledgement is sent back to the host?
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Correct answer: C
The
force-unit-access(FUA) setting on a LUN controls write caching behavior. The default setting (true) honors FUA bits sent by the host OS, which typically requests that critical writes bypass volatile caches and are committed directly to stable media (like NVRAM/NVMEM in ONTAP). This ensures maximum data integrity, as ONTAP will not acknowledge the write until it is safely stored, which is critical in environments with unreliable power. - 4
You are tasked with designing a SAN solution for a customer who requires the ability to instantly create space-efficient, writable copies of their production database LUNs for use in their development environment. Which two NetApp technologies are required to achieve this? (Select TWO)
flowchart TD subgraph Production ProdDB[(Production LUN)] end subgraph Development DevCopy1[(Dev Copy 1)] DevCopy2[(Dev Copy 2)] end ProdDB -- create --> Snap[Snapshot] Snap -- clone --> DevCopy1 Snap -- clone --> DevCopy2Show answer details
Correct answer: B, C
FlexClone is the technology that creates instant, writable, space-efficient virtual copies (clones) of LUNs, files, or volumes.
FlexClone technology is based on an underlying ONTAP Snapshot copy. The process involves taking a Snapshot of the source LUN and then creating a writable clone from that point-in-time image.
- 5
Which command would you use to verify the ALUA state of paths to a LUN from the perspective of the ONTAP cluster?
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Correct answer: D
The
lun mapping show -fields reporting-nodescommand displays which nodes in the cluster are advertising paths to the LUN for a specific igroup. The output will show which nodes are presenting 'optimized' paths (typically the node owning the aggregate) and which are presenting 'non-optimized' paths (typically the HA partner), which directly corresponds to the ALUA state from the storage's perspective. - 6
A financial institution is deploying a new ONTAP 9.10 cluster for a latency-sensitive database application using NVMe/FC. The security team mandates that host initiators should only be able to discover and connect to specific, pre-assigned target ports on the ONTAP cluster. Which ONTAP SAN feature must be configured to enforce this policy?
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Correct answer: B
Portsets are used to bind initiator NQNs (or WWPNs for FC, IQNs for iSCSI) to specific target LIFs on the storage system. This creates an additional layer of security beyond fabric zoning, ensuring that an initiator can only log in through designated network interfaces, fulfilling the security requirement.
- 7
During a pre-deployment assessment for a new iSCSI SAN, a consultant reviews the network switch configuration. The switches are configured with a standard MTU of 1500, but the ONTAP cluster and host initiators will be configured for jumbo frames (MTU 9000). What is the expected outcome when the host attempts to connect to the iSCSI target?
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Correct answer: B
For jumbo frames to work, the MTU must be consistently configured end-to-end: on the host initiator, all network switches in the path, and the ONTAP iSCSI LIFs. An MTU mismatch, where the switch has a smaller MTU than the endpoints, will cause larger packets to be dropped, leading to a failure of the iSCSI login process or severe connectivity issues.
- 8
An administrator is configuring a new Linux host (RHEL 8) for FCP access to an ONTAP cluster. After installing the NetApp Host Utilities, they need to ensure that the multipathing configuration is optimized for ONTAP. Which configuration file is primarily modified by the Host Utilities to set the correct device parameters for DM-Multipath?
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Correct answer: C
The NetApp Host Utilities for Linux automatically create or modify the
/etc/multipath.conffile. This file contains the necessary device stanzas that define the optimal settings for NetApp LUNs, such as the path checker, path selector, failback policy, and I/O timeout values, ensuring proper DM-Multipath behavior. - 9
A storage administrator observes that a volume containing iSCSI LUNs is consistently running low on space due to a large number of Snapshot copies. The administrator needs to guarantee that hosts can continue writing to their LUNs, even if it means automatically deleting Snapshot copies. Which volume option must be configured to achieve this behavior?
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Correct answer: D
The snapshot autodelete policy allows ONTAP to automatically delete Snapshot copies when volume space becomes critically low, prioritizing host writes. Setting the policy to
target_free_space(ortry_first) enables this functionality, ensuring LUNs remain available for writes by reclaiming space from the oldest Snapshot copies first. - 10
True or False: When configuring an ONTAP SVM for NVMe/FC access, you must create an igroup and add the host's WWPNs to it before mapping a namespace.
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Correct answer: B
This statement is false. NVMe uses different terminology and constructs than FCP. Instead of igroups and WWPNs, NVMe uses subsystems and host NQNs (NVMe Qualified Names). You create a subsystem, add the host's NQN to it, and then map the namespace to that subsystem.
