Curious about Actual NetApp NCSE (NS0-593) Exam Questions?

Here are sample NetApp certified support engineer - ONTAP specialist (NS0-593) Exam questions from real exam. You can get more NetApp NCSE (NS0-593) Exam premium practice questions at TestInsights.

Page: 1 /
Total 60 questions
Question 1

After expanding a two-node AFF A300 cluster with two AFF A700 nodes, you observe latencies when data is accessed indirectly. The system node run -node -command netstat command shows retransmits and packet drops on the LIFs. The AFF A700 nodes with 40 Gbps and the AFF A300 connect with 10 Gbps to the cluster interconnect. You are using Cisco Nexus 3132Q cluster interconnect switches. You just updated to ONTAP 9.8 software.

In this scenario, what is causing this problem?


Correct : A

A speed mismatch occurs when the cluster ports on different nodes have different speeds, such as 10 Gbps and 40 Gbps1.

A speed mismatch can cause packet loss, retransmits, and latency on the cluster network, especially when data is accessed indirectly, meaning that the node serving the data is different from the node hosting the LIF2.

In this scenario, the AFF A300 nodes have 10 Gbps cluster ports, while the AFF A700 nodes have 40 Gbps cluster ports, creating a speed mismatch on the cluster interconnect34.

The Cisco Nexus 3132Q cluster interconnect switches support both 10 Gbps and 40 Gbps cluster ports, but they have a shallow buffer size of 9 MB per port, which can be easily overwhelmed by the bursty traffic generated by the speed mismatch.

To solve this problem, you need to either upgrade the cluster ports on the AFF A300 nodes to 40 Gbps, or downgrade the cluster ports on the AFF A700 nodes to 10 Gbps, to achieve a homogeneous cluster interconnect1.

Alternatively, you can use QoS policies to limit the bandwidth of the cluster ports to avoid oversubscription and congestion on the cluster interconnect.Reference:

1: Cluster network cabling, ONTAP 9 Documentation Center

2: Cluster Network Latency - Troubleshooting Guide, NetApp Knowledge Base

3: AFF A300 Tech Specs, NetApp

4: AFF A700 Tech Specs, NetApp

[5]: Why do network speed mismatches create problems with shallow buffered switches?, NetApp Knowledge Base

[6]: How to use QoS to limit the bandwidth of cluster ports, NetApp Knowledge Base


Options Selected by Other Users:
Mark Question:

Start a Discussions

Submit Your Answer:
0 / 1500
Question 2

You are trying to deploy a Connector in the AWS cloud from NetApp Cloud Manager. The deployment fails and shows the message 'Insufficient permissions to deploy Cloud Connector". You have verified the AWS access key and the AWS secret key.

In this scenario, what Is the reason that the deployment failed?


Correct : B

= The Connector is a software component that enables Cloud Manager to manage resources and processes within your AWS environment. To deploy a Connector in AWS, you need to have the correct IAM policies attached to your user account or role. These policies grant the Connector the permissions to perform various actions on your behalf, such as creating and deleting EC2 instances, VPCs, security groups, and so on. If you do not have the required IAM policies, the deployment will fail with the message 'Insufficient permissions to deploy Cloud Connector'. You can find the list of required IAM policies in theConnector deployment policy for AWS.Reference=Creating a Connector in AWS from Cloud Manager, page 3-4.


Options Selected by Other Users:
Mark Question:

Start a Discussions

Submit Your Answer:
0 / 1500
Question 3

Your customer added a new DS4246 shelf to their FAS2750 single-node system and created a new aggregate on the new shelf. Two weeks later, they log into Active IQ and discover the Medium Impact error shown below.

Shelves with both connections via the same SAS path detected

Referring to the exhibit, which statement is correct?


Correct : B

According to the SAS cabling rules and concepts for shelves with IOM12/IOM12B modules1, one of the goals is to provide a single, easily understood universal algorithm for all SAS products and configurations. One of the rules is that of the two paths to a single disk storage stack from a single node, one should connect to the top and one to the bottom of the storage stack. This ensures maximum possible resilience and minimizes the reliance on controller takeovers. The exhibit shows that both SAS connections from one controller go to the same shelf, which violates this rule and causes the error message. This situation is not normal for a FAS2750 single-node system and can reduce reliability and availability.The cables should be reconnected according to the SAS cabling rules and the controller-to-stack cabling worksheet template for quad-pathed connectivity2.Reference=SAS cabling rules and concepts - shelves with IOM12/IOM12B modules,SAS cabling issue: Both SAS connections from one controller go to the same shelf,Controller-to-stack cabling worksheet template for quad-pathed connectivity.


Options Selected by Other Users:
Mark Question:

Start a Discussions

Submit Your Answer:
0 / 1500
Question 4

You notice poor performance on your FlexGroup and execute the system node run -node * flexgroup show command for more Information. You notice the "Urge" column has non-zero values.

In this scenario, which statement is true?


Correct : C

= The ''Urge'' column in the flexgroup show command indicates the urgency of data rebalancing for each constituent volume. A non-zero value means that the data placement is uneven across the volumes, which can affect the performance of the FlexGroup. The target value is the desired percentage of data for each volume, and the difference value is the deviation from the target. The FlexGroup tries to balance the data placement by moving data between the volumes, but this process can be slow or interrupted by other factors. Therefore, it is recommended to monitor the ''Urge'' column and take corrective actions if the values are high or persistent.Reference=What do ''flexgroup show'' target and urgency and other columns mean?,NetApp ONTAP FlexGroup volumes --- Best practices and implementation guide


Options Selected by Other Users:
Mark Question:

Start a Discussions

Submit Your Answer:
0 / 1500
Question 5

A customer wants to connect a NetApp AFF A700 system to a 40GbE switch. The controllers have a 10/40G Ethernet card in slot 4 for this purpose. The link comes up fine on node 2, but it will not come up on node 1. You look at the AutoSupport data for the nodes in question and see the output shown in the exhibit.

What is the cause of the customer's problem?


Correct : D

= The cause of the customer's problem is that the port has an incorrect SFP inserted.According to the AutoSupport data, the node 1 has a device type of XL710 BQ, which is a 40GbE adapter that requires a QSFP+ transceiver1.However, the part number of the adapter is 111-02590, which is a 10GbE adapter that requires a SFP+ transceiver2. This mismatch prevents the link from coming up on node 1.The customer should replace the adapter with the correct one or use a compatible transceiver for the existing adapter.Reference=1:NetApp Hardware Universe - X1144A2:NetApp Hardware Universe - X1147A


Options Selected by Other Users:
Mark Question:

Start a Discussions

Submit Your Answer:
0 / 1500
Page:    1 / 12   
Total 60 questions