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Network Appliance NS0-093 Certification Materials, NS0-093 Reliable Test Prep

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Network Appliance NS0-093 (NetApp Accredited Hardware Support Engineer) Exam is a certification exam that is designed to test the knowledge and skills of hardware support engineers who work with NetApp storage systems. NS0-093 exam is an industry-recognized certification that demonstrates a candidate's expertise in supporting NetApp storage systems, including installation, configuration, and troubleshooting.

Network Appliance NS0-093 certification provides a comprehensive understanding of NetApp storage systems, seeking to establish the competency of candidates as hardware support engineers. Achieving this certification demonstrates a proficiency in applying knowledge and skills to real-world scenarios, and establishes expertise in NetApp protocols and hardware components. NetApp Accredited Hardware Support Engineer certification is highly desirable for hardware support engineers and storage administrators, validating their knowledge and skills in NetApp storage systems.

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Network Appliance NetApp Accredited Hardware Support Engineer Sample Questions (Q19-Q24):

NEW QUESTION # 19
An aggregate has experienced a multiple disk failure due to a failing I/O module (IOM). The module has been replaced and the aggregate is still failed.
What step can be taken to recover the aggregate?

A. Run wafliron from the boot_menu.
B. Unfail the drives in the order that they failed from the clustershell
C. Use diskcopy from maintenance mode.
D. Unfail the drives from maintenance mode.

Answer: D

Explanation:
When an aggregate fails due to multiple disk failures caused by a faulty I/O module (IOM), the first step after replacing the faulty IOM is to manually unfail the affected drives. This process is done in maintenance mode.
* Enter Maintenance Mode:
* Reboot the node and interrupt the boot process to access maintenance mode.
* Identify Failed Drives:
* Use the command:
Steps to Recover the Aggregate:sql
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storage show disk -broken
This command lists all failed (broken) drives.
* Unfail the Drives:
* Use the following command for each failed drive:
php
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disk unfail <disk-name>
* Reconstruct the Aggregate:
* Once all drives are unfail, the system should begin reconstructing the RAID groups in the aggregate.
* A. Use diskcopy from maintenance mode:
* Diskcopy is used for cloning or copying data between disks, not for recovering failed aggregates.
* B. Run wafliron from the boot_menu:
* wafliron is used to repair WAFL inconsistencies, but it does not help recover failed aggregates due to disk issues.
* D. Unfail the drives in the order that they failed from the clustershell:
* Drives must be unfail in maintenance mode, not from the clustershell.
Why Other Options Are Incorrect:
* NetApp's "Aggregate and RAID Troubleshooting Guide" explains the process of recovering aggregates and using maintenance mode commands.
* "ONTAP Disk Recovery Guide" outlines steps to unfail disks and recover RAID groups.
References:

NEW QUESTION # 20
Which three commands can be used to manually generate a kernel core file? (Choose three.)

A. ::> reboot -node <node_name> -dump true
B. SP> system core
C. ::> system node panic -node <node_name>
D. SP> system power cycle
E. ::> halt -dump true -node <node_name>

Answer: A,C,E

Explanation:
To manually generate a kernel core file in ONTAP, the following commands can be used:
* What it does:Reboots the specified node and generates a core dump before rebooting.
* Example Usage:
1. ::> reboot -node <node_name> -dump truereboot -node <node_name> -dump true
* What it does:Halts the specified node and generates a core dump before shutting down.
* Example Usage:
2. ::> halt -dump true -node <node_name>halt -dump true -node <node_name>
* What it does:Forces a panic on the specified node, which triggers a kernel core dump.
* Example Usage:
3. ::> system node panic -node <node_name>system node panic -node <node_name>
* A. SP> system power cycle:
* This command reboots the system from the Service Processor but does not generate a core dump.
* E. SP> system core:
* This command displays core file information but does not generate a new core dump.
Why Other Options Are Incorrect:
* NetApp "Kernel Core Dump Guide" explains the use of reboot, halt, and panic commands to trigger core dumps.
* ONTAP CLI Reference includes the syntax for these commands.
References:

NEW QUESTION # 21
Which of the following scenarios could result in a NetApp WAFL inconsistency in a RAID DP aggregate?

A. two disks failing within seconds of each other
B. two disks failing and a block error during reconstruction
C. both party disks failing
D. rebooting a node during a disk reconstruction

Answer: B

Explanation:
A NetApp WAFL (Write Anywhere File Layout) inconsistency in a RAID-DP aggregate could occur in the following scenarios:
* Why this causes inconsistency:
* RAID-DP is designed to handle up to two concurrent disk failures. However, if a block error occurs during the reconstruction process (e.g., unreadable data on the surviving disks), the RAID group cannot rebuild the lost data, leading to WAFL inconsistencies.
1. Two disks failing and a block error during reconstruction
* Why this causes inconsistency:
* If two disks in the same RAID group fail nearly simultaneously (before the RAID-DP can reconstruct data from the first failed disk), the system cannot recover the data, resulting in WAFL inconsistencies.
2. Two disks failing within seconds of each other
* B. rebooting a node during a disk reconstruction:
* Rebooting a node does not cause WAFL inconsistency because ONTAP ensures that RAID reconstructions resume upon reboot without data loss.
* D. both party disks failing:
* This is not a valid RAID-DP term.
Why Other Options Are Incorrect:
* "WAFL and RAID-DP Operations Guide" explains failure scenarios that could cause inconsistencies.
* NetApp's "Troubleshooting RAID Groups and Aggregates" covers recovery procedures for double-disk failures and reconstruction errors.
References:

NEW QUESTION # 22
A node has failed.
Which two conditions must be met for an automatic takeover to be triggered? (Choose two.)

A. The combined utilization of both nodes must be less than 100%.
B. Mailbox disks must be reachable.
C. The cluster network must be available.
D. NVRAM must be synchronized.

Answer: B,D

Explanation:
For an automatic takeover to occur in an HA pair, the following conditions must be met:
* The HA pair uses mailbox disks to coordinate and ensure that both nodes have consistent cluster state information.
* If the mailbox disks are not reachable, the takeover process cannot proceed.
1. Mailbox Disks Must Be Reachable:
* The nodes in an HA pair continuously mirror NVRAM data to ensure that writes are protected.
* If NVRAM is not synchronized, the takeover cannot safely handle active workloads.
2. NVRAM Must Be Synchronized:
* A. The combined utilization of both nodes must be less than 100%:
* This is not a requirement for automatic takeover. ONTAP can handle higher utilization during failover scenarios.
* B. The cluster network must be available:
* While the cluster network is critical for normal operation, takeover can still occur if the cluster network is unavailable, as long as the HA interconnect is operational.
Why Other Options Are Incorrect:
* NetApp "ONTAP High Availability Guide" outlines the requirements for automatic takeover in HA pairs.
* "ONTAP NVRAM Synchronization and Failover Guide" explains NVRAM mirroring requirements.
References:

NEW QUESTION # 23
Which two tools can you use to invoke AutoSupport? (Choose two.)

A. NetApp Cloud Insights
B. CLI
C. the SmartSolve tool
D. the NetApp Active IQ website

Answer: B,D

Explanation:
To invoke AutoSupport in ONTAP, the following tools can be used:
* How to use:Run the command:
1. CLI (Command Line Interface)python
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autosupport invoke -node <nodename> -type all
* This triggers AutoSupport to collect and send logs and system information.
* How to use:Log in to the Active IQ portal and use its interface to request an AutoSupport message from the connected ONTAP systems.
2. NetApp Active IQ website
* A. NetApp Cloud Insights:
* This tool is used for monitoring and performance analysis, not for triggering AutoSupport messages.
* D. the SmartSolve tool:
* SmartSolve is used for case resolution guidance but does not invoke AutoSupport.
Why Other Options Are Incorrect:
* "ONTAP AutoSupport Guide" provides instructions for invoking AutoSupport via CLI and Active IQ.
References:

NEW QUESTION # 24
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