Question No. 1

When you review performance data for a NetApp ONTAP cluster node, there are back-to-back (B2B) type consistency points (CPs) found occurring on the loot aggregate.

In this scenario, how will performance of the client operations on the data aggregates be affected?

ADuring B2B processing, clients will be unable to write data.

BData aggregates will not be affected by B2B processing on another aggregate.

CDuring B2B processing, all I/O to the node is stopped.

DDuring B2B processing, clients will be unable to read data.

Show Answer

Correct Answer: B

A B2B type consistency point (CP) occurs when a new CP is triggered before the previous CP is completed, due to the second memory buffer reaching a watermark. This can cause write latency to increase as user write operations are not replied until a write buffer frees up. However, this only affects the aggregate that is undergoing the B2B processing, and not the other aggregates on the same node. Therefore, the performance of the client operations on the data aggregates will not be affected by B2B processing on the root aggregate.Reference=What is the Back-to-Back (B2B) Consistency Point Scenario?,What are the different Consistency Point types and how are they measured in ONTAP 9?,What are the different Consistency Point types and how are they measured?

Question No. 2

Recently, a CIFS SVM was deployed and is working. The customer wants to use the Dynamic DNS (DDNS) capability available in NetApp ONTAP to easily advertise both data UFs to their clients. Currently. DNS is only responding with one data LIF. DDNS is enabled on the domain controllers.

Referring to the exhibit, which two actions should be performed to enable DDNS updates to work? (Choose two.)

ADisable the -vserver-fqdn parameter for the SVM DDNS services.

BRemove the NFS protocol from the cifs_01 data LIF.

CEnable the -use-secure parameter for the SVM DDNS services.

DEnable the -is-enabled parameter for the SVM DDNS services

Show Answer

Correct Answer: B, D

To enable DDNS updates to work, two actions should be performed:

Remove the NFS protocol from the cifs_01 data LIF.This is because DDNS updates are only supported for LIFs that have only one data protocol enabled1. The cifs_01 LIF has both NFS and CIFS protocols enabled, which prevents it from registering its DNS record dynamically. By removing the NFS protocol from the cifs_01 LIF, it will become eligible for DDNS updates.

Enable the -is-enabled parameter for the SVM DDNS services.This is because the -is-enabled parameter controls whether the SVM sends DDNS updates to the DNS servers2. The exhibit shows that the -is-enabled parameter is set to false for the svm1 SVM, which means that it does not send any DDNS updates. By enabling the -is-enabled parameter, the SVM will start sending DDNS updates for its eligible LIFs.Reference:

1: Configure dynamic DNS services3

2: Manage DNS/DDNS services with System Manager4

Question No. 3

A customer is calling you to troubleshoot why users are unable to connect to their CIFS SVM.

Referring to the Information shown in the exhibit, what Is the source of the problem?

AThe v1db database is offline.

BThe aggregate aggr2 has a failed disk.

CThe databases On Node03 must be Switched from secondary to master.

DThe broken disk in Node03 is the source of the problem.

Show Answer

Correct Answer: D

The broken disk in Node03 is causing the cluster ring to be offline, which prevents the CIFS SVM from being accessible. The cluster ring is a distributed database that stores cluster configuration information and enables communication between cluster nodes. If the cluster ring is offline, the cluster cannot function properly and the CIFS SVM cannot serve data to clients. The other options are not relevant to the CIFS SVM connectivity issue.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

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