NetApp NS0-593 Exam Practice Test Instant Access

Question 1

You have a NetApp ONTAP cluster consisting of four NetApp FAS8200 controllers with two NetApp CN1610 cluster switches running ONIAP 9.8 software. You are receiving several alert messages stating that the cluster network has degraded. After troubleshooting, you determine that the errors are being generated from Node 2, interface e0b.

In this scenario, what should you do first to solve this problem?

AReplace the Twinax cable between Node 2, Interface e0b. and the NetApp CN1610 switch.

BReplace the motherboard on Node 2.

CReplace both NetApp CN1610 switches.

DReplace the NetApp CN1610 switch that connects to Node 2, interface e0b.

Answer : A

A Twinax cable is a type of copper cable that is used to connect cluster ports to cluster switches1.

A cluster port is a network port that is configured for cluster communication and data access2.

A cluster switch is a network switch that is used to interconnect the nodes in a cluster and provide redundancy and load balancing3.

A cluster network is a network that enables cluster communication and data access between the nodes in a cluster and external clients4.

A cluster network can be degraded due to various reasons, such as misconfiguration, malfunction, or excessive link errors on the cluster ports or the cluster switches.

Link errors are errors that occur on the physical layer of the network, such as CRC errors, length errors, alignment errors, or dropped packets.

Link errors can indicate a problem with the cable, the switch port, the network interface card (NIC), or the cable connector.

In this scenario, the alert messages state that the cluster network has degraded and the errors are being generated from Node 2, interface e0b.

The first step to solve this problem is to replace the Twinax cable between Node 2, interface e0b and the NetApp CN1610 switch, as this could be the source of the link errors.

Replacing the cable could resolve the issue and restore the cluster network to a healthy state.

If replacing the cable does not solve the problem, then other steps may be required, such as checking the switch port, the NIC, or the cable connector, or replacing the switch or the motherboard.Reference:

1: Cluster network cabling, ONTAP 9 Documentation Center

2: Cluster ports, ONTAP 9 Documentation Center

3: Cluster switches, ONTAP 9 Documentation Center

4: Cluster network, ONTAP 9 Documentation Center

[5]: How to troubleshoot CLUSTER NETWORK DEGRADED error messages, NetApp Knowledge Base

[6]: Cluster network degraded due to high CRC errors on cluster ports, NetApp Knowledge Base

Question 2

You are attempting to connect a NetApp ONTAP cluster to a very complex network that requires LIFs to fail over across subnets.

How would you accomplish this task?

AConfigure an equal number of UFs on each subnet.

BConfigure VIP LIFs using OSPF.

CConfigure VIP LIFs using BGP.

DConfigure a I IF failover policy for each subnet inside a single broadcast domain.

Answer : C

A LIF (Logical Interface) is a logical entity that represents a network connection point on a node1.

A VIP LIF (Virtual IP LIF) is a LIF that can fail over across subnets within an IPspace2.

BGP (Border Gateway Protocol) is a routing protocol that enables VIP LIFs to advertise their IP addresses to external routers and to update the routing tables when a failover occurs3.

To connect a NetApp ONTAP cluster to a complex network that requires LIFs to fail over across subnets, you need to configure VIP LIFs using BGP on the cluster and on the external routers3.

This way, you can ensure that the network traffic is routed to the optimal node and port for each VIP LIF, and that the network connectivity is maintained in the event of a node or port failure3.Reference:

1: Logical Interfaces, ONTAP 9 Documentation Center

2: VIP LIFs, ONTAP 9 Documentation Center

3: Configuring BGP on a cluster, ONTAP 9 Documentation Center

Question 3

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?

AChange the vCenter password.

BChange the IP address of the ONTAP Select Deploy VM.

CChange the gateway address of the ONTAP Select Deploy VM.

DChange the IP address of the vCenter server.

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 4

A customer enabled NFSv4.0 on an SVM and changed the client mount from NFSv3 to NFSv4. Afterwards, the customer found that the directory owner was changed from root to nobody.

In this scenario, which statement is true?

AThe customer did not configure name services on the SVM.

BThe clients must be restarted to start using NFSv4.

CThe export policy is not configured properly.

DThe ID mapping domains do not match between the client and server.

Answer : D

NFSv4 is a network file system protocol that supports security, performance, and scalability features.NFSv4 uses ID mapping to ensure that the permissions of files and directories are consistent across different NFSv4 servers and clients1

ID mapping is the process of translating the user and group identifiers (UIDs and GIDs) of the local system to the user and group names (user@domain and group@domain) of the remote system, and vice versa.ID mapping is done by the idmapd service, which uses the /etc/idmapd.conf file to determine the domain name of the system2

ID mapping requires that the NFSv4 server and client have the same domain name configured in the /etc/idmapd.conf file.If the domain names do not match, the idmapd service cannot map the UIDs and GIDs to the user and group names, and the permissions of the files and directories will be shown as nobody:nobody, which is the default anonymous user3

Therefore, if a customer enabled NFSv4.0 on an SVM and changed the client mount from NFSv3 to NFSv4, and found that the directory owner was changed from root to nobody, the most likely cause is that the ID mapping domains do not match between the client and server.The customer should check and correct the /etc/idmapd.conf file on both systems, and restart the idmapd service and remount the NFSv4 share4

1: ONTAP 9 - Network File System (NFS) - The Open Group2: ONTAP 9 - NFSv4 and NFSv4.1 Enhancements - The Open Group3: NFSv4 mount incorrectly shows all files with ownership as nobody:nobody - Red Hat Customer Portal4: NFSv4 mountpoint shows incorrect ownerships as nobody:nobody in CentOS/RHEL - The Geek Diary

Question 5

Your customer mentions that they have accidentally destroyed both root aggregates in their two-node cluster.

In this scenario, what are two actions that must be performed? (Choose two.)

ARejoin the second node to the re-created cluster.

BRe-create the cluster from the local backup.

CInstall ONTAP from a USB device.

DRe-create the cluster from the remote backup.

Answer : A, C

If both root aggregates are destroyed in a two-node cluster, the cluster will be inoperable and the data will be inaccessible. To recover from this situation, you need to perform the following actions:

Install ONTAP from a USB device on one of the nodes. This will create a new root aggregate and a new cluster on that node.

Rejoin the second node to the re-created cluster. This will also create a new root aggregate on the second node and synchronize it with the first node.

Restore the cluster configuration and data from a backup, if available.Reference=

ONTAP 9 Documentation Center

Storage System Recovery Troubleshooting

Recovering from a root aggregate failure

Question 6

Refer to the exhibit.

Referring to the exhibit, what do you need to do to return the MetroCluster to a normal state?

AEnter the metroclustor switchback command on Site B.

BEnter the metrocluster switchback command on Site A.

CEnter the storage failover giveback command on Site B.

DEnter the storage failover giveback command on Site A.

Answer : B

The question refers to a MetroCluster configuration, which is a disaster recovery solution that uses two physically separated, mirrored clusters1.

The exhibit shows a MetroCluster switchover scenario, where Site A has experienced a disaster and Site B has taken over the tasks of Site A2.

To return the MetroCluster to a normal state, you need to perform a MetroCluster switchback operation, which reverses the switchover and activates the original sync-source storage virtual machines (SVMs) on Site A3.

To perform a MetroCluster switchback, you need to enter themetrocluster switchbackcommand on the cluster that was the source of the switchover, which is Site A in this case3.

The other options are not correct, because:

A)Entering themetrocluster switchbackcommand on Site B will not work, as Site B is the destination of the switchover, not the source3.

C)Entering thestorage failover givebackcommand on Site B will not work, as this command is used for local HA failover within a cluster, not for MetroCluster switchover between clusters4.

D)Entering thestorage failover givebackcommand on Site A will not work, as this command is used for local HA failover within a cluster, not for MetroCluster switchover between clusters4.Reference:

Understanding MetroCluster data protection and disaster recovery - NetApp

Perform IP MetroCluster switchover and switchback - NetApp

Performing a switchback - NetApp

High-availability configuration - NetApp

Question 7

You have a customer complaining of long build times from their NetApp ONTAP-based datastores. They provided you packet traces from the controller and client. Analysis of these traces shows an average service response time of 1 ms. QoS output confirms the same. The client traces are reporting an average of 15 ms in the same time period.

In this situation, what would be your next step?

AThe cluster is responding slowly and requires further investigation using performance archives.

BThe client that reports high latency should be investigated.

CThe cluster interconnects should be investigated.

DA sync core should be triggered.

Answer : B

The question describes a scenario where the controller and client have a significant difference in their reported latency for the same datastores.

The controller's latency is 1 ms, which is within the normal range for ONTAP-based datastores1.

The client's latency is 15 ms, which is much higher than the controller's latency and could indicate a performance issue on the client side2.

Therefore, the next step is to investigate the client that reports high latency and identify the possible causes, such as network congestion, misconfiguration, resource contention, or application issues23.

The other options are not relevant or appropriate for this scenario, because:

A) The cluster is not responding slowly, as the controller's latency is low and QoS output confirms the same.