NS0-162 Practice Exam Questions with Answers NetApp Certified Data Administrator (ONTAP) Certification

To cache on-premises ONTAP volumes into the cloud with Cloud Volumes ONTAP, you need to use the FlexCache feature, which creates a writable, persistent cache of a data volume that is consistent and coherent with its original data set and stored in a remote location. FlexCache supports both SMB and NFS protocols, which are the traditional file access protocols for Windows and UNIX/Linux systems respectively. You can control file access using UNIX-style permissions, NTFS-style permissions, or a mix of both. Clients can access the same files using both SMB and NFS protocols123.

• NVMe and iSCSI are not supported by FlexCache, as they are block protocols that run on standard Ethernet networks. FlexCache is a file-based solution that works with file protocols only12. References :- Client protocols | NetApp Documentation, Client protocols - NetApp, Cloud Volumes ONTAP for AWS: Storage for the Cloud Era.

The performance capacity report shows the current and optimal performance metrics for the CPU resource on each node of the cluster. The current metrics reflect the actual workload on the resource, while the optimal metrics reflect the workload that would result in the best performance. The performance capacity, or headroom, is the difference between the current and optimal metrics. A low or negative headroom indicates that the resource is over utilized and may experience performance degradation. The exhibit shows that both nodes have negative headroom for the CPU resource, which means that the CPU has been over utilized. A storage failover event will cause performance issues, as the surviving node will have to handle the workload of both nodes, which will further reduce the headroom and increase the latency. References :- Identify remaining performance capacity, What is Performance Capacity in ONTAP 9 and Unified Manager?

 Active IQ Unified Manager, Cloud Insights, and Active IQ OneCollect are three NetApp products that can export the monthly performance data of your ONTAP 9.8 cluster to a CSV file for further processing. Active IQ Unified Manager is a web-based application that monitors and manages the health and performance of your ONTAP clusters. You can export data to CSV and PDF files for reporting from the Active IQ Unified Manager web UI1. Cloud Insights is a cloud-based monitoring and optimization tool that provides insights into your hybrid cloud infrastructure. You can export data to CSV files from the Cloud Insights dashboard. Active IQ OneCollect is a data collection tool that gathers configuration and performance data from your NetApp and third-party storage systems. You can export data to CSV files from the Active IQ OneCollect GUI. References :- Performance monitoring and management overview, Exporting data to CSV files for reporting, Exporting data to CSV and PDF files for reporting, [Exporting data to CSV files], [Exporting data to CSV files]

Active IQ Unified Manager is a web-based tool that monitors the health, performance, capacity, and protection of clusters and SVMs. It provides alerts, reports, dashboards, and recommendations to help optimize and troubleshoot the ONTAP environment. Active IQ Unified Manager can be used to validate the deployment of a NetApp AFF A400 cluster by checking the cluster configuration, status, and efficiency1.

Active IQ Config Advisor is a desktop tool that scans the cluster and its components for configuration issues, best practices violations, and potential problems. It generates a report that identifies the errors, warnings, and informational messages along with the suggested actions to resolve them. Active IQ Config Advisor can be used to validate the deployment of a NetApp AFF A400 cluster by verifying the hardware, software, network, and storage settings2.

The other tools are not relevant for validating the deployment of a NetApp AFF A400 cluster. OnCommand Workflow Automation is a tool that automates storage management tasks using predefined or custom workflows. Active IQ Web site is a tool that provides insights and recommendations based on the data collected from NetApp systems34. References :- Active IQ Unified Manager overview, Active IQ Config Advisor overview, OnCommand Workflow Automation overview, Active IQ overview

To find out how many files are in the NAS volumes of the cluster and how old these files are, you can use the following two tools:

• ONTAP System Manager 9.8 provides a way for admins to find out file system information in any NAS storage volume quickly and easily by enabling a low-impact scanner for each volume. This scanner crawls the ONTAP file system in the background with a low priority job and delivers a wealth of information that is available as soon as you navigate to the volume details page. You can see the file and directory count, the file-age histograms, the capacity use, and other parameters for each volume1.
• ONTAP CLI provides the filestats command that can display a summary of file statistics within a volume on a storage system by reading the file information from a snapshot copy that you specify. You can use various options to filter the output by file size, file type, file age, and so on2.
• Active IQ Config Advisor and Active IQ Unified Manager are not the tools that can fulfill this requirement, as they are mainly used for monitoring and managing the health, performance, and configuration of the cluster, not the file system details of the volumes34. References :- Active IQ Config Advisor, Active IQ Unified Manager, How to report file sizes within a volume using the filestats command, ONTAP 9.8 Feature Overview.

The number of root aggregates that are created during deployment of two NetApp AFF A400 HA pairs is 8. Each AFF A400 HA pair consists of two nodes, and each node has one root aggregate that contains the root volume. Therefore, two AFF A400 HA pairs have 2 x 2 x 2 8 root aggregates in total. The other options are incorrect because they do not match the number of nodes and root aggregates in the scenario. References :- Manage node root volumes and root aggregates, AFF A400 All-Flash Storage Array

The NetApp solution that fulfills the requirements is SnapMirror Business Continuity (SM-BC). SM-BC is a business continuity solution for zero RPO and near zero RTO that was introduced in ONTAP 9.8. SM-BC enables transparent application failover and failback between two ONTAP clusters without requiring any application reconfiguration. SM-BC supports ISCSI LUNs as well as NFS and SMB file shares. The other options are not suitable for this scenario because:

• SyncMirror is a local high availability solution that mirrors data within a single HA pair, not across clusters.
• SVM DR is a disaster recovery solution that replicates data and configuration of an SVM to another cluster, but requires manual intervention to activate the destination SVM and reconfigure the application.
• SMS is a synchronous replication solution that provides zero RPO, but not zero RTO, as it also requires manual intervention to activate the destination volume and reconfigure the application. References :- SnapMirror Business Continuity overview, SnapMirror Business Continuity for ONTAP 9.12, SnapMirror Business Continuity FAQ

 The route is a network configuration that defines how the traffic from a LIF is routed to a destination. The route consists of a destination, a gateway, and a metric. The destination is the IP address or subnet that the LIF wants to reach. The gateway is the IP address of the next-hop router that forwards the traffic to the destination. The metric is a numerical value that indicates the preference of the route. In this scenario, the route for the SVM vs0 has a destination of 0.0.0.0/0, which means any IP address or subnet. The gateway is 10.61.208.1, which is the IP address of the router that connects the LIF to the rest of the network. The metric is 20, which is a relatively low value that indicates a high preference. However, the gateway is incorrect, as it does not match the subnet of the LIF. The LIF has an IP address of 192.0.2.130 and a netmask of 255.255.255.0, which means its subnet is 192.0.2.0/24. The gateway should be an IP address within the same subnet, such as 192.0.2.1. This would allow the LIF to communicate with the router and reach other destinations. The incorrect gateway causes connectivity issues, as the LIF cannot find a valid route to send or receive traffic. To resolve this issue, the route needs to be modified to reflect the correct gateway using the network route create or network route modify commands or the System Manager GUI12. References :- Create a route, Modify a route

File System Analytics is a native ONTAP feature that collects and aggregates data in real time, providing detailed information concerning file and directory count, file-age histograms, capacity use, and other parameters1. You can use ONTAP System Manager to visualize the data using industry standard measures such as hot, warm, and cold2. File System Analytics is available on ONTAP 9.8 and later versions3. Quality of Service, Logical Space Reporting, and volume autosizeare not features that report real-time file counts, but rather features that manage performance, efficiency, and capacity of volumes45 . References :- TR-4867: Best Practice Guidelines for ONTAP FIle System Analytics, File System Analytics overview, File System Analytics feature availability, [Quality of Service overview], [Logical space reporting overview], [Volume autosize overview]

 ONTAP System Manager and ONTAP CLI are two tools that you can use to monitor system performance in real time. ONTAP System Manager is a web-based interface that provides a graphical view of the cluster performance, including CPU, network, disk, and volume utilization. You can also drill down to view the performance of individual nodes, aggregates, LIFs, and protocols. ONTAP CLI is a command-line interface that provides various commands to view the performance statistics of the cluster, such as sysstat, statistics, qos, and perf. You can use these commands to view the performance metrics in different formats, intervals, and levels of detail. The other tools are not suitable for real-time performance monitoring, as they provide historical or predictive analysis. Active IQ Unified Manager is a tool that collects and analyzes performance data from multiple clusters and provides alerts, reports, and recommendations based on the data. Active IQ Digital Advisor is a tool that provides insights and recommendations for your NetApp systems based on data collected from AutoSupport. References :- Monitor cluster performance, What commands are useful to monitor performance in ONTAP 9?, Analyze performance graphs, NetApp launches monitoring, alerting, and troubleshooting for ONTAP from cloud

 You can use either XCP or the in-place conversion feature to move data from a FlexVol volume to a FlexGroup volume. XCP is a data migration tool that can copy data between different types of volumes, such as FlexVol and FlexGroup. The in-place conversion feature, introduced in ONTAP 9.7, allows you to convert a FlexVol volume to a FlexGroup volume without requiring a data copy or additional disk space. However, you cannot convert a FlexGroup volume back to a FlexVol volume. SnapMirror is not a valid option for this scenario, because it does not support replicating data from FlexVol to FlexGroup volumes. A FlexVol to FlexGroup conversion is supported, but only for transitioned volumes starting from ONTAP 9.8. References :- Converting FlexVol volumes to FlexGroup volumes overview, Can a FlexGroup be converted to a FlexVol?, Can I convert a Flexvol to FlexGroup without rewarming the tiered data?

 A thin-provisioned LUN is one for which storage is not reserved in advance, but allocated dynamically as it is needed. To create a thin-provisioned LUN, the -space-reservation parameter must be set to disabled, which means that the LUN does not reserve any space from the containing volume. The other parameters are either irrelevant or contradictory to thin provisioning. References :- Thin provisioning - NetApp, How to convert a volume or LUN from thick to thin provisioned, ONTAP - Provisioning volumes

 To troubleshoot the issue of iSCSI LUNs not visible on the host, you should verify that the iSCSI data protocol has been enabled on the ports and that the controller has not been taken over. If the iSCSI data protocol is disabled on the ports, the storage system will not accept iSCSI connections or requests over those ports. If the controller has been taken over by its partner, the iSCSI LUNs on the taken-over node will not be available to the host. You can use the vserver iscsi connection show command to check the status of the iSCSI connections and the storage failover show command to check the status of the controller. References :- Troubleshoot iSCSI LUNs not visible on the host, vserver iscsi connection show, storage failover show

 The correct way to warm the cache before clients access the cache volume for the first time is to prepopulate the cache volume with data from the origin volume using the flexcache prepopulate start command. This command copies the data blocks from the origin volume to the cache volume in the background, without affecting the client access to the origin volume. The other options are not valid for this scenario because:

• Enabling block-level invalidation using the volume flexcache origin config modify command does not warm the cache, but rather allows the origin volume to invalidate the cached data blocks when they are modified or deleted.
• Copying the data from the origin volume to the cache volume with the NetApp XCP Migration Tool is not recommended, as it can cause data inconsistency and performance degradation. XCP is a data migration tool that can copy data between different types of volumes, such as FlexVol and FlexGroup, but not between FlexCache and origin volumes.
• Synchronizing the origin and cache first with the volume flexcache sync-properties command does not warm the cache, but rather ensures that the cache volume inherits the properties of the origin volume, such as size, security style, and export policy. References :- Prepopulate a FlexCache volume, FlexCache volume concepts, FlexCache volume best practices

IPspaces enable you to create multiple logical networks on a single physical network. Each IPspace contains a set of ports, broadcast domains, subnets, and routing groups that are isolated from other IPspaces. By using IPspaces, you can avoid IP address conflicts and routing issues when connecting to different networks that use the same or overlapping IP subnets. In this scenario, you can create a separate IPspace for the intercluster LIFs of AcmeClusOl and WidgetsClusOl, and assign them different subnets that do not overlap with the local subnet at your company. This way, the clusters can communicate with each other without interference from the local network traffic. References :- ONTAP 9 Network Management Guide, ONTAP 9 Cluster and SVM Peering Express Guide, ONTAP 9 Cluster and SVM Peering Guide

 You can use ONTAP System Manager or the command line interface to disable the unused Ethernet ports in an ONTAP 9.8 cluster. ONTAP System Manager is a web-based graphical user interface that enables you to manage storage systems, clusters, and resources. The command line interface is a text-based interface that enables you to perform administrative tasks using commands. Both methods allow you to modify the network port settings and remove the ports from the broadcast domain. Active IQ Config Advisor and Active IQ Unified Manager are not methods to disable the unused Ethernet ports, but tools to monitor and optimize the cluster performance and configuration. References :- Monitor the reachability of network ports in ONTAP 9.8 and later, Map network ports using ONTAP 9.8 or later, Map network ports using ONTAP 9.7 or earlier

 NetApp ONTAP Select is a software-only version of ONTAP that can run on commodity servers with direct-attached storage. It supports both block and file protocols, including NFS, NVMe, and CIFS. SCSI and FCP are not supported by ONTAP Select. References :- ONTAP Select overview, Client protocols, Software-Defined Storage with ONTAP Select

To delegate administration of the SVM to an SVM administrator, you need to create the vsadmin user account in the new SVM and configure role-based access control (RBAC) for the vsadmin user account. The vsadmin user account is the default SVM administrator account that has full access to the SVM resources and can perform all SVM-related tasks. RBAC is a feature that allows you to control the access and permissions of users and groups based on their roles. You can use RBAC to assign roles, capabilities, and access methods to the vsadmin user account. Creating a LIF for SVM management and setting a password for the vsadmin user account are optional tasks that you can perform after creating the vsadmin user account and configuring RBAC for it. References :- Delegate administration to SVM administrators with System Manager - ONTAP 9.7 and earlier, Create a new SVM, Role-Based Access Control (RBAC) Express Guide

The exhibit shows the details of VOL_A volume, including its IOPS allocations. The “Peak IOPS Allocation” is listed as “used-space,” and the “Expected IOPS” is 1000IOPS/TB. Since the size of VOL_A is 100GB (or 0.1TB), the expected IOPS would be 100, but it’s essential to consider that the “Absolute Minimum IOPS” is stated as 500IOPS/TB. However, since there’s no provided maximum limit in the exhibit, we can’t definitively state a maximum possible IOPS from this information alone. References :-The answer and explanation are inferred from the provided image as there’s no direct reference available in NetApp Data Administrator (ONTAP) documents and learning resources.

To enable Active Directory (AD) domain users and groups to access the cluster or SVMs for administration purposes, you need to set up an authentication tunnel through an SVM that has a CIFS server created and joined to the domain. This can be either an existing CIFS SVM or a dedicated admin SVM. You also need to use the vserver active-directory create command to create a computer account on the domain for the SVM that you want to access. This command works for both CIFS and non-CIFS SVMs. Configuring an authentication tunnel through anadmin SVM or an existing CIFS SVM are both valid actions to accomplish this task. However, using the vserver active-directory create command to create a computer account on the domain for a CIFS SVM is not necessary, as this is done automatically when the CIFS server is created and joined to the domain. References :- Configure Active Directory domain controller access overview, How to configure AD authentication for cluster when CIFS is not licensed, Create a CIFS server

 Temperature Sensitive Storage Efficiency (TSSE) is a method of compressing data based on data “temperature”, or how often the data is used. “Cold” data, or data that is not used often, is recompressed with a higher compression ratio for increased storage efficiency. TSSE is enabled automatically on newly created thinly provisioned AFF volumes, not thick provisioned volumes. TSSE operations on AFF arrays are automatically throttled depending on whether data is hot or cold, to balance performance and efficiency. TSSE is not supported on Cloud Volumes ONTAP or ONTAP Select, as these platforms have different storage characteristics and requirements. References :- Temperature-sensitive storage efficiency overview, How does Temperature Sensitive Storage Efficiency affect SnapMirror?, ONTAP Temperature Sensitive Storage Efficiency (TSSE) – A Simple Introduction