Hot NS0-093 Passguide | Valid Network Appliance NS0-093: NetApp Accredited Hardware Support Engineer 100% Pass
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The NS0-093 certification exam is intended for professionals who have experience in the IT industry and possess a strong understanding of NetApp hardware products. NS0-093 exam covers a wide range of topics, including installation, configuration, troubleshooting, and maintenance of NetApp hardware products. NS0-093 Exam is designed to test the candidate's ability to address complex issues related to NetApp hardware products.
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Network Appliance NetApp Accredited Hardware Support Engineer Sample Questions (Q17-Q22):
NEW QUESTION # 17
In a SAS stack of shelves, what is the topology of the connection between expander and disk?
Answer: C
Explanation:
In a SAS stack of shelves, the connection between the expander and the disk uses a point-to-point topology.
* Point-to-Point:
* Each SAS disk in a shelf connects directly to the expander using a dedicated channel. This ensures that communication between the disk and expander is independent of other disks, improving performance and reliability.
* Why SAS Uses Point-to-Point:
* SAS (Serial Attached SCSI) eliminates the shared bandwidth limitations of traditional bus architectures (e.g., arbitrated loop or ring) by dedicating a connection to each device.
Key Details:
* A. arbitrated loop:
* Arbitrated loop is a topology used in Fibre Channel systems, not SAS.
* C. loop:
* SAS does not use loop-based communication; this is typical of older technologies like SCSI Parallel Interface (SPI).
* D. ring:
* Ring topology is not used in SAS stacks.
Why Other Options Are Incorrect:
* "NetApp SAS Shelf and Disk Configuration Guide" specifies point-to-point communication between expanders and disks in SAS environments.
References:
NEW QUESTION # 18
What should be the first step taken after detecting a NetApp WAFL inconsistency?
Answer: B
Explanation:
When a WAFL inconsistency is detected, the first step is to stabilize the system before attempting any repairs or recovery.
* Stabilize the System:
* Ensure that the system is not experiencing ongoing hardware or software issues.
* Avoid making changes to the affected aggregate or volume until the system is stable.
* Assess the Impact:
* Determine which aggregates or volumes are affected and the severity of the inconsistency.
Steps to Handle WAFL Inconsistency:
* A. Run wafliron:
* Running wafliron should only be done after stabilizing the system and under guidance from NetApp Support.
* C. Force offline the affected aggregate:
* Forcing an aggregate offline without proper assessment can lead to data loss.
* D. Run a dump to null:
* Dumping data is not relevant for resolving a WAFL inconsistency.
Why Other Options Are Incorrect:
* "NetApp WAFL Troubleshooting Guide" specifies that stabilization is the first step after detecting inconsistencies.
* NetApp Support documentation provides guidelines for handling WAFL inconsistencies safely.
References:
NEW QUESTION # 19
Which two of the following methods are valid ways to access a node which is not booting? (Choose two.)
Answer: B,C
Explanation:
If a node is not booting, the following methods can be used to access the system for troubleshooting:
* What it does:The SP provides out-of-band management access to the node, even if the node is not booting.
* How to use:
* Connect to the SP using SSH or a direct console connection.
* Use SP commands to gather logs or perform diagnostics.
1. Service Processor (SP)
* What it does:The serial console provides direct access to the node's bootloader or maintenance mode.
* How to use:
* Connect to the serial port using a terminal emulator.
* Use console commands to interact with the system.
2. Serial Console
* A. node management port:
* The node management interface is only accessible if the node is booted and ONTAP is running.
* B. cluster management port:
* The cluster management interface requires the cluster to be operational, which is not possible if the node is not booting.
Why Other Options Are Incorrect:
* NetApp "Service Processor and Serial Console Guide" provides instructions for accessing a non- booting node.
References:
NEW QUESTION # 20
Which of the following scenarios could result in a NetApp WAFL inconsistency in a RAID DP aggregate?
Answer: C
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 # 21
Which two NetApp tools should be used when troubleshooting the root cause of an unexpected controller reboot? (Choose two.)
Answer: A,C
Explanation:
To troubleshoot the root cause of an unexpected controller reboot, the following tools are commonly used:
* What it does:Provides monitoring and performance data for the ONTAP cluster, including historical event logs that may help identify the root cause of a reboot.
1. Active IQ Unified Manager
* What it does:The CLI allows you to gather logs and status information directly from the affected node.
Commands like event log show and system core are essential for identifying the reason behind the reboot.
2. ONTAP CLI
* B. Active IQ Digital Advisor:
* This tool focuses on predictive analytics and proactive recommendations, not troubleshooting unexpected reboots.
* D. ONTAP Mediator:
* This tool is used for managing MetroCluster configurations, not for troubleshooting reboots.
* E. Active IQ Config Advisor:
* This tool checks for configuration best practices but does not provide detailed logs or reboot diagnostics.
Why Other Options Are Incorrect:
* NetApp "ONTAP System Management Guide" emphasizes the use of Unified Manager and CLI for troubleshooting system issues.
References:
NEW QUESTION # 22
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