NS0-162 Netapp NetApp Certified Data Administrator (ONTAP) Free Practice Exam Questions (2025 Updated)

The easiest and fastest way to restore a single file from a Snapshot copy is to use the Windows Shadow Copy Client, which allows the user to access and restore Data ONTAP Snapshot files from the Previous Versions tab in the Properties menu. This does not require any CLI commands or ONTAP System Manager operations. References :- Restoring files from Snapshot copies, Restore a single file from a Snapshot copy

The problem of being unable to upload large files or migrate VMs to the new NFS datastore is likely caused by a mismatch in the maximum transmission unit (MTU) settings between the network switches, the ONTAP cluster, and the vSphere hosts. The exhibit shows that the broadcast domain for the NFS LIF has an MTU of 9,000 bytes, which means that it is configured for jumbo frames. However, the default MTU for the VMkernel ports on the vSphere hosts is 1,500 bytes, which means that they are not configured for jumbo frames. This can result in packet fragmentation, dropped packets, or reduced performance. To correct the problem, the MTU of the VMkernel ports on the vSphere hosts should be changed to 9,000 bytes to match the MTU of the broadcast domain and the network switches. This will enable the vSphere hosts to send and receive jumbo frames and improve the NFS performance. References :- ProvisionNFS storage for VMware datastores, vSphere NFS datastore - Version 3 with ONTAP, Configure jumbo frames for VMkernel networking

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?

 According to the NetApp best practices, flow control should be disabled on data network ports and cluster network ports using 10GbE Ethernet. This is because flow control can cause excessive pause frames, xon/xoff frames, or packets being re-queued, which can affect the network performance and TCP throughput. Flow control works at the physical link layer and does not consider the upper level protocols. Therefore, it is recommended to disable flow control end-to-end on both data and cluster network ports for optimal performance. References :- How to modify flow control on cluster port in ONTAP, What are the flow control best practices for Ethernet?, Configure your network for best performance

 The action that you should take to ensure that the LIF only fails over to the correct ports is to change the LIF’s failover policy to sfo-partner-only. This failover policy restricts the target ports to the home node and its storage failover (SFO) partner only, excluding any other nodes in the cluster. This way, the LIF will only fail over to port eOc or eOd on either storage node, as shown in the exhibit. The other options are not valid for this scenario because:

Creating a DNS load balancing zone does not affect the LIF failover behavior, but rather provides a way to distribute client requests across multiple LIFs using DNS round-robin.

Splitting the broadcast domain does not ensure that the LIF only fails over to the correct ports, but rather creates separate groups of ports that are on the same Ethernet broadcast domain. This may affect the LIF reachability and performance.

Creating an IPspace does not ensure that the LIF only fails over to the correct ports, but rather isolates network traffic for a set of SVMs within a cluster. This may affect the LIF connectivity and security. References :- Network interface failover policies - behavior and uses, Configure failover settings on a LIF, storage failover takeover

 To increase the number of files that can be created in a volume, you need to increase the number of files permitted on the volume and increase the size of the volume. The number of files permitted on the volume is determined by the maxfiles parameter, which affects the maximum number of public inodes the volume can have. You can change the maxfiles parameter using the maxfiles command. The size of the volume is determined by the total space allocated to the volume. You can increase the size of the volume using the vol size command. Increasing the number of files permitted and the size of the volume will allow more files to be created in the volume, as long as there is enough free space and inodes available. References :- How to increase the maximum number of files for a flexible volume, Changing the maximum number of files allowed in a volume, [Increasing the size of a volume]

 The NetApp Hardware Universe (HWU) is a web-based tool that provides information about NetApp hardware products, including system specifications, supported configurations, and compatibility matrices. The HWU can help you determine which ports to use to expand your cluster by selecting your system model and viewing the available ports and their functions. You can also compare different models and generate reports based on your criteria. References :- NetApp Hardware Universe, Detailed guide - AFF A400

https://docs.netapp.com/us-en/ontap/data-protection/convert-mode-snapmirror-synchronous-task.html On the link above it states: You cannot modify the policy of a Snapmirror Synchronous relationship to convert its mode.

 The ONTAP Mediator service is a software component that monitors the health and connectivity of the MetroCluster IP nodes and sites. It enables automatic switchover to the surviving site in case of a site disaster by providing quorum to the surviving cluster. The ONTAP Mediator service must be installed on a Linux host that has network connectivity to both MetroCluster sites and is located in a third site. References :- ONTAP Mediator service overview, ONTAP MetroCluster IP Implementation

 The problem is that the host IP address does not match the export policy rule. The export policy rule shown in the exhibit specifies that any client with an IP address within the 10.0.1.0/24 subnet can access the volume using NFSv3, as indicated by “Access Protocol” set to “any” and “Client Match” set to “10.0.1.0/24”. However, the Linux host has an IP address of 10.0.1.24, which falls outside this range, leading to a mismatch between the host IP and export policy rule. To fix this problem, the export policy rule should be modified to include the host IP address or a broader subnet that covers it. References :- Add a rule to an export policy, vserver export-policy rule create, Create an export policy for the volume

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]

 CIFS is the NetApp implementation of the SMB protocol, which enables file sharing between Windows clients and NetApp storage systems. To use CIFS, the storage system must have a valid CIFS license installed and configured. If a node fails on an HA configuration, the surviving node takes over the resources and services of the failed node, including the CIFS server. However, if the surviving node does not have a CIFS license, the CIFS server cannot start and the clients cannot access their data. Therefore, the lack of CIFS license on the surviving node is a possible cause of the problem. References :- CIFS and SMB overview, Licensing overview, Troubleshooting CIFS issues

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1blob:https://www.bing.com/fd7a4a79-678a-424a-ad84-79514273271f netapp.com2blob:https://www.bing.com/fd7a4a79-678a-424a-ad84-79514273271f netapp.com3blob:https://www.bing.com/fd7a4a79-678a-424a-ad84-79514273271f netapp.com4blob:https://www.bing.com/7b982e78-3207-461c-97da-fcc23f1329eb docs.netapp.com5blob:https://www.bing.com/7ce1b44c-d8cb-4ba4-9151-bade91d99ed5 marks4sure.com6blob:https://www.bing.com/f15e8a57-3f23-4381-8f79-1ea4ae2553b7 kb.vmware.com7learn.microsoft.com8docs.vmware.com9blob:https://www.bing.com/bd9c3c7b-3bbc-45ee-89e8-e45d62e9c94c community.netapp.com

 To increase access security in both NFS and iSCSI environments, you can use Kerberos and CHAP as authentication methods. Kerberos is a network authentication protocol that uses tickets to provide mutual authentication between clients and servers. CHAP is a challenge-response protocol that verifies the identity of a peer by using a shared secret. ONTAP supports Kerberos for NFS exports, which allows you to secure NFS traffic with encryption and integrity checking. ONTAP also supports CHAP for iSCSI LUN access, which prevents unauthorized access to iSCSI targets and initiators. References :- NFS security overview, iSCSI Security Configuration

FC switch zoning is the process of assigning a set of WWPNs to a zone, which is a group of ports that can communicate with each other. Zoning is required for FC SAN hosts to access LUNs on the SVM. If the zoning is not done correctly, the host might not be able to discover the LUNs or might see LUNs that belong to other hosts. Therefore, FC switch zoning is a possible cause of the issue with SVM eplc_fcp when mapping a namespace to a host. References :- Configure an SVM for FC, Configure FC protocol and FCoE protocol on SVMs with System Manager

SnapDiff is an internal ONTAP engine that quickly identifies the file and directory differences between two Snapshot copies. SnapDiff can be used by backup applications to perform incremental backups, by reducing the amount of data that needs to be scanned and transferred. SnapDiff can also be used by other ONTAP features, such as SnapMirror and SnapVault, to optimize data replication and protection. References :- How incremental tape backup uses SnapDiff and Snapshot copies, Commvault Adds Features to Fortify Ransomware Security, Rubrik | Better NAS Backup RPO with Changelist Snapshots, Snapshot copies

 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 and ONTAP AutoSupport are the two NetApp components that satisfy the requirements. Active IQ is a cloud-based platform that uses telemetry data from NetApp products to provide insights, analytics, and recommendations for optimizing performance, availability, security, and efficiency. ONTAP AutoSupport is a feature that enables ONTAP systems to automatically send configuration, status, performance, and system events data to NetApp. This data helps NetApp to provide proactive support, identify security risks, notify bug fixes, and suggest ONTAP updates. Active IQ and ONTAP AutoSupport work together to enable automatic support case creation and resolution in case of hardware failures. References :- Security and privacy of NetApp telemetry data, Detect Security Vulnerability, Enable AutoSupport to get more insights and analytics for your StorageGRID system

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

To find the MAC address of the offline interface e0c, you need to look at the output of the network port show command for Node1, which shows the MAC address and the health status of each port. The MAC address of e0c is 00:a0:98:f1:2e:b2 and its health status is degraded, indicating that it has gone offline. This is the MAC address that you would supply to the engineering team.

The other MAC addresses are not correct, as they belong to different interfaces or nodes. The MAC address of e0d is 00:a0:98:f1:2e:b3 and its health status is healthy, indicating that it is still online. The MAC address of a0a is 02:a0:98:f1:2e:be and it is the active MAC address of the ifgrp that includes e0c and e0d. The MAC address of ala is 02:a0:98:f1:21:88 and it is the active MAC address of the ifgrp on Node2, which is not relevant to the question. References :- network port show - NetApp, network interface show - NetApp, How does a VIF MAC address get assigned in ONTAP 7?.