NetApp NS0-593 NetApp certified support engineer - ONTAP specialist Exam Practice Test

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Total 60 questions
Question 1

A customer calls you to troubleshoot a network issue. The customer wants to create a packet trace for all clients on the 192.168.9.0/24 subnet.

Referring to the exhibit, on which interface do you have to run the packet trace?



Answer : B

To create a packet trace for all clients on the 192.168.9.0/24 subnet, you have to run the packet trace on the interface that has an IP address in the same subnet. According to the exhibit, the only interface that matches this criterion is e2a-100, which has an IP address of 192.168.3.1/24. The other interfaces have IP addresses in different subnets, such as 10.92.4.202/16, 10.91.3.132/24, 10.95.7.114/24, and 10.92.6.200/16. Therefore, the correct answer is B. e2a-100.Reference=How to capture packet traces on ONTAP 9.10+ systems,How to capture packet traces (tcpdump) on ONTAP 9.2 to 9.9 systems,How to download captured packet traces from ONTAP


Question 2

You want to assign storage access to an NVMe protocol host.

Which three objects must be configured to accomplish this task? (Choose three.)



Answer : A, C, D

To assign storage access to an NVMe protocol host, you need to configure the following objects:

TheNVMe subsystem, which is a logical entity that represents a group of NVMe namespaces that can be accessed by one or more hosts1.

AnNVMe LIF, which is a logical interface that provides network connectivity for the NVMe subsystem2.

TheNVMe namespace, which is a logical volume that is exposed to the host as an NVMe device1.

You do not need to configure the NVMe broadcast domain or the NVMe LUN, as these are not relevant for NVMe protocol host access.Reference=1:Configuring NVMe-oF - Hitachi Vantara Knowledge2:Basic VMware NVMe Architecture and Components


Question 3

Your customer noticed in NetApp Active IQ that their NetApp Cloud Volumes ONTAP for Azure HA solution is no longer sending AutoSupport messages over HTTPS. A support ticket has been opened to find out why. No changes have been made to the Cloud Volumes ONTAP for Azure HA environment.

In this scenario, which two autosupport command parameters should be used to validate that AutoSupport Is working properly? {Choose two.)



Answer : B, C

= The -transport parameter specifies the protocol used to send AutoSupport messages, which should be HTTPS by default. The -proxy-url parameter specifies the proxy server used to send AutoSupport messages, which should be the Connector's IP address and port if the Cloud Volumes ONTAP nodes do not have outbound internet access. These two parameters can be used to check the AutoSupport configuration and connectivity status.Reference=Verify AutoSupport setup,Troubleshoot your AutoSupport configuration,High-availability pairs in Azure


Question 4

An administrator receives the following error message:

What are two causes for this error? (Choose two.)



Answer : A, D

The error message ''wafl.cp.toolong:error'' indicates that a WAFL consistency point (CP) took longer than 30 seconds to complete. A CP is a process that flushes the data from the NVRAM buffer to the disk.A long CP can cause latency and performance issues for the system1

One possible cause for a long CP is excessive SSD load causing the wear leveling to become unbalanced. Wear leveling is a technique that distributes the write operations evenly across the SSD cells to extend the lifespan of the SSD.If some SSD cells are written more frequently than others, the wear leveling will become unbalanced and the SSD performance will degrade2

Another possible cause for a long CP is an SSD disk performing garbage collection to create a dense data layout. Garbage collection is a process that reclaims the space occupied by invalid or deleted data on the SSD.Garbage collection can improve the write performance and storage efficiency of the SSD, but it can also consume CPU and disk resources and cause long CPs3

A disk failing or being failed is not a likely cause for a long CP, because the system will automatically mark the disk as failed and remove it from the aggregate.The system will also initiate a disk reconstruction or a RAID scrub to restore the data protection and redundancy4

There is no evidence that the system has SATA HDDs, so there is no reason to assume that there is excessive SATA HDD load.Moreover, SATA HDDs are usually used for secondary or backup storage, not for primary or performance-sensitive workloads5


1: Are long Consistency Points (wafl.cp.toolong) normal?- NetApp Knowledge Base2: How to troubleshoot SSD performance issues - NetApp Knowledge Base3: How to troubleshoot SSD garbage collection issues - NetApp Knowledge Base4: How to troubleshoot disk failures and replacements - NetApp Knowledge Base5: ONTAP 9 - Hardware Universe - The Open Group

Question 5

A system panic due to an "L2 watchdog timeout hard reset" error occurred. You have found a FIFO message in the SP log.

Which FIFO message Is useful for Investigating this Issue?



Answer : A

= The FIFO message before NMI is useful for investigating the issue because it shows the state of the system before the non-maskable interrupt (NMI) was triggered by the L2 watchdog timeout. The FIFO message contains information about the CPU registers, the stack pointer, the instruction pointer, and the last executed instructions. This can help identify the cause of the system hang or deadlock that led to the watchdog reset. The other FIFO messages are not useful because they show the state of the system after the reset or shutdown, which may not reflect the original problem.Reference=https://kb.netapp.com/onprem/ontap/hardware/Handling_L2_Watchdog_Resets_on_the_FAS8200_and_AFF_A300_platforms

https://docs.netapp.com/us-en/ontap-metrocluster/install-ip/task_sw_config_restore_defaults.html


Question 6

You are deploying NetApp ONTAP Select. When trying to add VMware vCenter to the inventory, you receive the message shown below.

Credential authentication failed for x.x.x.x with: HostConnectionFailed

In this scenario, how would you correct this problem?



Answer : B

The error message indicates that the ONTAP Select Deploy VM cannot connect to the vCenter server due to a network issue1.

One possible cause of this issue is that the IP address of the ONTAP Select Deploy VM is conflicting with another device on the same network2.

To correct this problem, you need to change the IP address of the ONTAP Select Deploy VM to a unique and valid address that can reach the vCenter server2.

You can change the IP address of the ONTAP Select Deploy VM by using the Deploy web interface or the Deploy CLI2.

After changing the IP address, you need to restart the Deploy services and re-add the vCenter server to the inventory2.Reference:

1: Credential authentication failed with: HostConnectionFailed, NetApp Knowledge Base

2: Changing the IP address of the Deploy VM, ONTAP Select 9 Documentation Center


Question 7

The motherboard of Node-01 is being replaced. To perform this task, a takeover was Initiated from Node-02. Node-02 panics showing the string below.

PANIC; Permanent errors on all HA mailbox disks (while marshalling header) in SKprocess fnmbx_instanceWorker on release 9.5P8 (C)

What has happened in this situation?



Answer : D

The mailbox disks are the first two disks of the root aggregate on each node of an HA pair. They store the HA state information and the panic dump files.The mailbox disks are used for communication between the HA partners and for takeover and giveback operations1

The mailbox destroy local command is used to destroy the mailbox disks on the local node. This command is only available in maintenance mode and should be used with extreme caution.The command is intended for situations where the mailbox disks are corrupted or inaccessible and need to be recreated2

If the mailbox destroy local command is executed on a node that is in takeover mode, the node will panic with the message ''Permanent errors on all HA mailbox disks''.This is because the node will lose the HA state information and the panic dump files of the partner node, and will not be able to communicate with the partner node or perform a giveback operation3

Therefore, if the motherboard of Node-01 is being replaced, and a takeover was initiated from Node-02, and Node-02 panics showing the string ''Permanent errors on all HA mailbox disks'', the most likely cause is that the mailbox destroy local command was executed on Node-02 while in maintenance mode.This is a serious error that can result in data loss and system downtime4


1: ONTAP 9 - High-Availability Configuration Guide - The Open Group2: ONTAP 9 - Commands: Manual Page Reference - The Open Group3: How to troubleshoot a ''Permanent errors on all HA mailbox disks'' panic - NetApp Knowledge Base4: One node PANIC : Permanent errors on all HA mailbox disks - NetApp Knowledge Base

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Total 60 questions