NetApp NCIE SAN ONTAP NS0-520 Questions & Answers

• Question 11:

  You have a SAN host that is only sending traffic to an ONTAP cluster using active non- optimized paths. In this scenario, over which network type does the node that is hosting the target LUN receive the traffic?

  A. Fibre Channel network

  B. Cluster network

  C. ISCSI network

  D. Intercluster network

  Correct Answer: B

  The Cluster Network This is used for traffic that is going between the nodes themselves, such as system information that is being replicated between the nodes. Also, if incoming client data traffic hits a network port on a different controller than the one which owns the disks, that traffic will also go over the cluster network.

• Question 12:

  You are configuring a new Netapp ONTAP cluster and are connecting the nodes to Cisco MDS SAN switches. You connect one of the nodes to switch port fc1/11 and run the commands that are shown in the exhibit. The SAN LIFs are enabled but are not operationally online, and none of the SAN hosts can access their LUNs on the ONTAP cluster.

  In this scenario, which configuration would cause this problem?

  

  A. Interoperability mode is not enabled on the switches

  B. The in-order guarantee is not enabled on the switch

  C. NPV is not enabled on the switches

  D. NPIV is not enabled on the switches

  Correct Answer: D

  in-order guarantee and interoperability mode are default configuration on a VSAN NPV is the core switch where NPIV is going to be enabled. The NPV core switch is defined as an upstream switch on which NPIV is enabled. The NPV core switch receives traffic that is passed to it from a downstream switch that has NPV enabled on it. A switch that is in NPV mode does not switch traffic; instead, it passes traffic to the upstream NPV core switch on which NPIV is enabled. After NPIV is enabled on the core NPV switch, the port should automatically come up (unless there are other issues). You can find more information on this link: https://www.cisco.com/c/en/us/td/docs/storage/san_switches/mds9000/sw/rel_3_x/troubles hooting/guide/trblgd/ts_npv.html#wp131957

• Question 13:

  Your customer asks you how to connect a host for SAN access to the newly installed AFF A400 system. In this scenario, which two statements are correct? (choose two)

  A. Direct Connection to the nodes from the hosts with ISCSI is supported

  B. Direct Connection to the nodes from the hosts with ISCSI is not supported

  C. Direct Connection to the nodes from the hosts with FC is not supported

  D. Direct Connection to the nodes from the hosts with FC is supported

  Correct Answer: AC

  ISCSI-Direct-attachment: In a direct-attached configuration, one or more hosts are directly connected to the controllers.

  You cannot directly attach FC or FC-NMVE SAN hosts to single nodes without using an FC switch.

  You can find more information on this link:

  https://docs.netapp.com/ontap-9/index.jsp?topic=%2Fcom.netapp.doc.dot-cm- sanconf%2FGUID-193CC377-5C6F-4D3C-B42E-CE71AB6AA77F.html

• Question 14:

  Referring to the exhibit, which two actions would you perform to ensure that each host has valid multipathing? (choose two)

  

  A. Verify that the VLANs are properly configured on the switches

  B. Verify that the VLANs are properly configured on the ONTAP cluster

  C. Verify that ALUA is enabled on the switches

  D. Verify that ISCSI service is started on the ONTAP cluster

  Correct Answer: AB

  Iscsi is already started, we can not run those commands successfully if the protocol is not started ALUA is enabled on hosts, It is not enabled on switches VLANs are configured on the Netapp and switches, they need to be properly configured on both sides to work correctly You can find more information on this link: https://docs.netapp.com/ontap-9/index.jsp?topic=%2Fcom.netapp.doc.dot-cm- nmg%2FGUID-52AE6E9C-13B6-49BA-B030-545C1C7647AC.html

• Question 15:

  A customer has an existing legacy ISCSI storage environment that is connected to upstream network switches with various Windows hosts. The customer wants to purchase a new Netapp array to migrate their data. In this scenario which two tools would help to validate the prerequisites for this Netapp configuration? (choose two)

  A. Interoperability Matrix Tool (IMT)

  B. Active IQ OneCollect

  C. Hardware Universe (HWU)

  D. Active IQ Config Advisor

  Correct Answer: AB

  ActiveIQ OneCollect is a tool from NetApp that will create an inventory of your environment that will include hosts, switches and storage and validate it against the IMT (Interoperability Matrix Tool).

• Question 16:

  An administrator is configuring their existing Ethernet network switches to provide ISCSI LUNs to several servers. The network switches are also used for other traffic from various hosts. In this scenario, which statement is true?

  A. Increase the ratio of access ports to trunk ports to 2:1

  B. Configure the MTU size to be larger on the switch and storage than on the host.

  C. Use multiple VLANs to isolate traffic from other network traffic

  D. Netapp recommends using the same LIFs for NFS and ISCSI traffic

  Correct Answer: C

  VLANs offer specific benefits, such as increased security and improved network reliability that you might want to leverage in iSCSI.

  You can find more information on this link:

  https://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm- sanconf/SAN%20configuration.pdf (page 5)

• Question 17:

  A customer is deploying a SAN cluster of A700 nodes and wants to ensure that the SAN cluster will maintain a quorum in the event of a rack level power failure. Which two statements are true in this scenario? (choose two.)

  A. Six nodes are required

  B. Four nodes are required

  C. Three racks are required

  D. Two racks are required

  Correct Answer: AC

  The quorum rule states that to make changes to the configuration in our cluster, we need to have more than half of the nodes available. This prevents configuration conflicts if we lose connectivity between the nodes in our cluster.

  So, if we have only 2 racks and 4 nodes we could never get more than half of the nodes available if one of those racks power fails.

  We need 6 nodes separated on 3 racks, so we can have more than half of the nodes available if one of those racks power fails.

• Question 18:

  You are asked to separate production FC traffic from test development FC traffic. In this scenario, at a minimum, which two configurations would accomplish this task? (choose two)

  A. VLANs

  B. Shared igroup

  C. SVMs

  D. Cisco VSANs

  Correct Answer: CD

  SVMs will help us to separate traffic creating production_LIFs and development_LIFs VLANs will not affect anything, because it is asking about FC traffic Cisco VSans will help us to create separate virtual SANs within the same switch.

• Question 19:

  You are configuring FC ports on front-end SAN switches for a 4-node Metrocluster configuration across two data centers. You need to ensure that each data center serves FC LUNs when an FC port goes offline in one data center. In this scenario, which front end switch setting must be modified to avoid overlap when a new port comes online?

  A. NPIV enabled

  B. NPIV reject

  C. WWPN reject

  D. ANA mapped

  E. WWNN reject

  Correct Answer: A

  Best practice: NPIV is required for FC LIFs to operate correctly. Before creating FC LIFs, make sure that any fabrics attached to an ONTAP system have NPIV enabled.

  You can find more information on this link:

  https://www.netapp.com/pdf.html?item=/media/10680-tr4080pdf.pdf

• Question 20:

  What are two considerations when creating a physical reference drawing for adding an ASA AFF A700 system to your existing FC SAN environment? (Choose two)

  A. available cooling

  B. Hardware Compatibility

  C. available rack space

  D. switch connectivity

  Correct Answer: CD

  A physical reference drawing should be used to know the rack space and the distance between that space and the equipment to which it will be connected ... Being an ASA, it must be connected to a SAN switch