NS0-185 Practice Questions

Before removing a node from an ONTAP cluster, NetApp installation procedures require several validation steps to ensure cluster quorum and availability are preserved. The exhibit shows cluster ring information indicating quorum status and master node assignment.

First,high availability must be confirmed. The node being removed must have an HA partner capable of taking over resources. This ensures nondisruptive operation during and after node removal, which is a mandatory prerequisite for the cluster remove-node command.

Second, the node must be marked asineligibleusing the cluster modify -eligibility false command. This prevents ONTAP from attempting to assign cluster responsibilities or data ownership to the node while it is being removed. This step is explicitly required in NetApp removal workflows.

MovingEpsilon(the quorum tie-breaker) to the node being removed would be incorrect and dangerous, as Epsilon must remain on a stable node to maintain cluster quorum. Additionally, the cluster does not automatically re-elect a new master simply because a node is removed; mastership is determined before removal.

Therefore, the correct statements areA and B.

NetApp hardware installation documentation strictly definessupported cable types and distancesfor Ethernet connectivity. For 40GbE connections using QSFP+ interfaces, NetApp supports both copper and optical cabling, each with specific distance limitations.

The exhibit shows supported copper cable options, including10-meter NetApp-supported copper cables, which exceed the current seven-meter requirement. Installing these supported cables is a valid and compliant solution.

Alternatively, the customer can change the requirement tooptical cables, which support significantly longer distances and are fully supported for AFF A400 40GbE connectivity. Optical cables are commonly used when distance exceeds passive copper limitations.

Relocating equipment is not required when supported cabling options exist. Changing “Ethernet cable requirements” generically is not a valid technical action.

Therefore, the correct answers areB and D.

AFF A250 systems are not supported on CN1610 cluster switches. Therefore, they cannot be added to an existing cluster that uses those switches. Valid options are to either create a new switched cluster using the CN1610 switches (if supported for that configuration) or deploy the AFF A250 as a switchless 2-node cluster.

ONTAP clusters require that all nodes run the same ONTAP version before a node can join the cluster under normal conditions. The exhibit clearly indicates that the join operation failed because the cluster is running ONTAP 9.8 while the new node is running ONTAP 9.7, resulting in a mixed-version cluster restriction.

One nondisruptive solution is toupgrade the new node to ONTAP 9.8before attempting to join it to the cluster. This approach aligns the software version of the new node with the existing cluster and fully complies with NetApp-supported installation procedures. It does not impact cluster availability and is the preferred long-term solution.

The second nondisruptive option is to use the-allow-mixed-version-joinparameter. ONTAP explicitly allows this method to temporarily permit a mixed-version cluster for the purpose of expansion or upgrade workflows. This option is designed for controlled scenarios and allows the node to join without disrupting existing cluster operations. However, the mixed-version state is intended to be temporary and must be resolved by upgrading the remaining nodes.

Reverting the cluster or reinitializing all nodes would be disruptive and violate nondisruptive installation principles. Therefore, the correct answers areC and D.