Question No. 1

You have a customer who is concerned with high CPU and disk utilization on their SnapMirror destination system. They are worried about high CPU and disk usage without any user operations.

In this situation, what should you tell the customer?

ASuggest that the customer manually cancel any scanners on the destination to reduce CPU usage.

BExplain that background tasks such as SnapMirror throttle up in the absence of user workload.

CSuggest that the customer throttle their SnapMirror relationships to reduce resource consumption.

DExplain that only user workload should use the CPU and Investigate further.

Show Answer

Correct Answer: B

SnapMirror is a data replication technology that allows efficient and flexible data protection and disaster recovery for NetApp ONTAP storage systems1

SnapMirror transfers data between source and destination volumes using a network connection.SnapMirror can use storage efficiency features such as compression and deduplication to reduce the amount of data transferred and stored1

SnapMirror transfers are scheduled and controlled by policies that define the frequency, retention, and priority of the transfers.SnapMirror policies can also specify the network bandwidth limit for the transfers2

SnapMirror transfers are considered background tasks that run in the absence of user workload.SnapMirror transfers can consume CPU and disk resources on both source and destination systems, depending on the amount and type of data being replicated3

SnapMirror transfers can throttle up or down depending on the availability of system resources and network bandwidth. SnapMirror transfers will throttle up when there is no user workload, and throttle down when there is user workload.This is to ensure that SnapMirror transfers do not impact the performance of user operations3

Therefore, if a customer is concerned with high CPU and disk utilization on their SnapMirror destination system, the best answer is to explain that background tasks such as SnapMirror throttle up in the absence of user workload.This is normal and expected behavior, and it does not indicate a problem with the system3

1: ONTAP 9 Data Protection - SnapMirror - The Open Group2: ONTAP 9 Data Protection - SnapMirror Policies - The Open Group3: SnapMirror storage efficiency configurations and behavior - Resolution Guide - NetApp Knowledge Base

Question No. 2

Your customer calls you because one application is not able to access a NetApp ONTAP S3 bucket. While reviewing the EMS log on the cluster, you see the following message:

The same credentials work in another application.

In this scenario, what would cause this problem?

AThe application is trying to log in as an anonymous user.

BThe application is using v2 signatures.

CThe application is using v4 signatures.

DThe application is trying to access using the HTTP protocol.

Show Answer

Correct Answer: B

The error message indicates that the access is denied for user 'anonymous user' (Vserver 50), from client IP 10.10.10.10 accessing resource '/offload-target'. This means that the application is not providing a valid user name or access key to authenticate with the ONTAP S3 server.According to the NetApp documentation1, ONTAP S3 server supports both v2 and v4 signatures, but v2 signatures are deprecated and not recommended. Therefore, the application should use v4 signatures to access the ONTAP S3 bucket.Additionally, the application should specify the bucket name in the host name, not in the resource path, as shown in the following example2:

https://bucket-name.s3-server-name.com/object-name

Reference=1ONTAP S3 Server Overview - NetApp Documentation2Accessing an ONTAP S3 bucket - NetApp Documentation

Question No. 3

When an administrator tries to create a share for an existing volume named voll, the process fails with an error.

Referring to the exhibit, what Is the reason for the error?

AThe volume must have a type of DP.

BThe volume has not been mounted.

CThe CIFS service is not authenticating properly with the domain controller.

DThe CIFS service is not in workgroup mode.

Show Answer

Correct Answer: B

The error message indicates that the specified path ''/vol1'' does not exist in the namespace belonging to Vserver ''svm1''. This means that the volume ''vol1'' has not been mounted to the Vserver's namespace, which is required for creating a share. The volume type, the CIFS service status, and the CIFS service mode are not relevant to the error.Reference=https://www.netapp.com/support-and-training/netapp-learning-services/certifications/support-engineer/

https://mysupport.netapp.com/site/docs-and-kb

Question No. 4

A customer reports that some of their client computers are unable to access a FlexGroup over CIFS. This problem involves only their older Windows XP clients and some printers and scanners.

In this scenario, which statement Is correct?

AFlexGroup requires CIFS shares to be located in qtrees, which these clients do not support.

BFlexGroup requires CIFS shares to use the Continuously Available Feature, which these clients do not support.

CThese systems use the SMQI protocol which Is an unsupported feature in FlexGroup

DThese systems use Offloaded Data Transfer, which is an unsupported feature in FlexGroup.

Show Answer

Correct Answer: B

FlexGroup requires CIFS shares to use the Continuously Available Feature, which enables transparent failover and recovery of SMB sessions in the event of a node failure or takeover. This feature is only supported by Windows 8 and later clients, and some printers and scanners may not support it either. Therefore, these older Windows XP clients and some printers and scanners are unable to access a FlexGroup over CIFS.Reference=Supported and unsupported configurations for FlexGroup volumes,NetApp ONTAP FlexGroup volumes --- Best practices and implementation guide(page 24)

Question No. 5

Your customer has mounted an NFS SVM from a Linux client unci performance is very poor. The customer is certain that they have jumbo frames enabled. They have verified an MTU of 9000 on both the Linux client and the broadcast domain on the NetApp ONTAP 9.8 cluster.