NS0-165 NetApp Certified Data Administrator, ONTAP (NS0-165) Practice Questions
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- v1NetApp Certified Data Administrator, ONTAP (NS0-165) 150 questions Current
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- 1
When provisioning a new data Storage Virtual Machine (SVM) in ONTAP, what is the role and characteristic of the SVM's root volume?
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Correct answer: A
The SVM root volume is created automatically when the SVM is provisioned. It serves as the top-level root ('/') of the SVM's file system namespace. All subsequent NAS volumes containing user data are mounted into this namespace via junction paths. Best practice dictates that the SVM root volume should contain no user data files and remain small, protected by Snapshot copies or SnapMirror.
- 2
Complete the statement: To verify whether all cluster nodes are communicating normally across the cluster interconnect and verify the status of the cluster management database rings in ONTAP CLI, the command to inspect the ring status is 'cluster ring _____'.
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Correct answer: A
The command 'cluster ring show' displays the status of all internal replicated database rings (mgmt, vldb, vif, bcom, crs) across all nodes in the cluster. It validates whether each node's database unit is in quorum and running the same epoch and transaction numbers.
- 3
A financial analytics company is designing a high-capacity repository for machine learning datasets. The dataset is projected to reach 1.8 PB in size and will contain over 8 billion small files. The files will be ingested concurrently by thousands of compute worker nodes via NFSv3 and SMB shares.
Key requirements:
- Provide a single unified namespace path for client access.
- Scale past the traditional single-volume capacity (300 TB) and file count limitations (2 billion files) of a traditional FlexVol volume.
- Distribute ingest traffic evenly across multiple nodes and SSD aggregates.
graph TD Clients[NFS/SMB Compute Clients] --> Junction['/datasets' FlexGroup] subgraph Cluster['ONTAP Cluster Nodes & Aggregates'] Junction --> C1[Constituent Vol 1: Node-1 Aggr1] Junction --> C2[Constituent Vol 2: Node-2 Aggr2] Junction --> C3[Constituent Vol 3: Node-3 Aggr3] Junction --> C4[Constituent Vol 4: Node-4 Aggr4] endWhich ONTAP storage feature must the architect implement to satisfy these requirements?
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Correct answer: A
A FlexGroup volume acts as a single container volume with a single namespace that can scale up to 20 PB and 400 billion files in ONTAP. Internally, a FlexGroup consists of multiple constituent FlexVols striped across multiple aggregates and cluster nodes. ONTAP automatically balances file creation and ingest across these constituents, delivering massive scale, high ingest concurrency, and linear throughput scaling beyond single-FlexVol boundaries.
- 4
Which TWO statements regarding NetApp Temperature-Sensitive Storage Efficiency (TSSE) in ONTAP are correct? (Select TWO)
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Correct answer: A, C
TSSE (Temperature-Sensitive Storage Efficiency), enabled by default on AFF platforms in recent ONTAP releases, dynamically applies compression based on block access temperature. Hot, actively modified data is compressed using lightweight 8 KB compression groups to minimize latency and write amplification, whereas colder data is scanned and compressed in the background using higher-ratio 32 KB compression groups.
TSSE integrates inline efficiency features (inline deduplication, inline compression, and inline compaction) with an intelligent background process that monitors data activity over time to achieve superior space savings without compromising write latency.
- 5
A storage architect is designing an enterprise SAN infrastructure for high-throughput, low-latency database workloads. The customer is evaluating NetApp All-SAN Array (ASA) platforms versus standard AFF A-Series systems. Which architectural behavior uniquely characterizes NetApp ASA platforms compared to standard AFF systems?
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Correct answer: A
NetApp All-SAN Array (ASA) platforms present symmetric active-active multipathing to host initiators across both controller nodes in an HA pair. This means all paths via both nodes are active/optimized, eliminating failover path state transitions and avoiding inter-controller traffic traversal over the cluster interconnect during normal I/O. In contrast, standard AFF systems employ asymmetric logical unit access (ALUA) where paths to the node owning the volume are active/optimized, while paths to the HA partner are active/non-optimized.
- 6
An organization is deploying Cloud Volumes ONTAP (CVO) in Amazon Web Services (AWS) using a high-availability (HA) multi-Availability Zone (AZ) configuration. Which role does the Cloud Volumes ONTAP Mediator perform in this architecture?
graph TD AZ1[AWS AZ 1: CVO Node 1] AZ2[AWS AZ 2: CVO Node 2] AZ3[AWS AZ 3: CVO Mediator] AZ1 -.-> AZ3 AZ2 -.-> AZ3Show answer details
Correct answer: B
In multi-AZ deployments of Cloud Volumes ONTAP, the Mediator instance resides in a third Availability Zone. It provides quorum tiebreaking to prevent split-brain conditions and orchestrates the re-pointing of AWS route tables for floating IP addresses when storage failover occurs between CVO Node 1 and Node 2. NVRAM replication occurs directly between the two ONTAP instances, not through the Mediator.
