Practice Free NS0-165 Exam Online Questions
A Systems Engineer is configuring an NVMe over TCP (NVMe/TCP) SAN fabric.
Unlike traditional FCP or iSCSI which utilize ALUA to inform the host of path states, the NVMe specification uses Asymmetric Namespace Access (ANA).
The engineer triggers a planned HA takeover. node1 goes down, and node2 seamlessly assumes ownership of node1’s namespaces. The Linux hosts experience zero application downtime.
Based on ONTAP’s implementation of the NVMe ANA protocol, which sequence correctly describes how the storage controller communicated the path changes to the Linux host’s multipathing engine during this failover?
- A . The ONTAP Mediator mathematically rewrote the Linux host’s nvme.conf file via a proprietary REST API call, redirecting the Subsystem NQN to node2.
- B . ONTAP sent a Unit Attention condition over the node1 TCP socket; the host subsequently updated the ALUA Target Port Group, transitioning the paths to an Active/Non-Optimized state to pause I/O.
- C . ONTAP instantly disconnected the TCP sockets to node1; the Linux host probed node2, and ONTAP returned an ANA state of Optimized for the node2 paths, allowing the host to resume I/O.
- D . ONTAP broadcasted a Gratuitous ARP (GARP) out of node2’s physical ports, transferring node1’s NVMe IP address, completely bypassing the ANA state machine.
Which statement correctly describes the architectural behavior of a volume configured with a space guarantee of none (thin provisioning) in ONTAP?
- A . ONTAP strictly restricts the volume from utilizing inline storage efficiency features like deduplication to ensure rapid, unhindered dynamic block allocation.
- B . ONTAP reserves zero physical space from the aggregate at volume creation. Physical blocks are allocated dynamically from the aggregate’s free pool only during client writes.
- C . In a thick-provisioned volume (space-guarantee volume), ONTAP allocates the entire logical volume size from the aggregate immediately upon creation. However, the actual writing of physical blocks to disk is deferred until host I/O occurs.
- D . The volume mathematically reserves 100% of its configured capacity from the aggregate, guaranteeing that client writes will never fail due to aggregate capacity exhaustion.
A Security Analyst manages a strict compliance archive using the SnapLock for SnapVault architecture.
The primary volume (vol_financials_prod) is a standard FlexVol. The secondary volume (vol_financials_vault) is a SnapLock Compliance (SLC) volume.
The SnapVault policy is configured to retain weekly snapshots for exactly 7 years on the destination SLC volume.
cluster_vault::> snapmirror policy show -policy Vault_7Y
Rule Keep Preserve
weekly_archive 365 true
In Year 3 of the 7-year retention cycle, the company is sued. The legal department orders the Security Analyst to place an indefinite Legal Hold on the destination snapshot weekly_archive_2023_05_10 residing on vol_financials_vault.
The analyst successfully applies the Legal Hold via the ONTAP CLI.
Fast forward to Year 8. The lawsuit is still actively ongoing. The 7-year retention period defined by the SnapVault policy has mathematically expired for that specific snapshot.
Based on the architectural interaction between SnapLock WORM expiration and active Legal Holds, what is the exact status of snapshot weekly_archive_2023_05_10 on the destination array?
- A . The snapshot is automatically transitioned from a SnapLock Compliance state to a SnapLock Enterprise state to accommodate the expired policy, allowing the legal team to extract the data via SMB before it purges.
- B . The ONTAP storage controller mathematically isolates the snapshot into a hidden, air-gapped aggregate and forces the SnapVault engine to perform a full baseline re-initialization over the WAN.
- C . Upon detecting an active Legal Hold, the WAFL engine prevents deletion of the snapshot. The snapshot remains in a locked WORM state, unaffected by the expiration of the 7-year retention policy, until an administrator explicitly removes the Legal Hold.
- D . As defined by the SnapVault policy with a 7-year retention period, the replication engine is configured to automatically delete the snapshot when the retention timer expires. This automated deletion process takes precedence over any manually applied Legal Hold.
A Security Analyst manages a strict compliance archive using the SnapLock for SnapVault architecture.
The primary volume (vol_financials_prod) is a standard FlexVol. The secondary volume (vol_financials_vault) is a SnapLock Compliance (SLC) volume.
The SnapVault policy is configured to retain weekly snapshots for exactly 7 years on the destination SLC volume.
cluster_vault::> snapmirror policy show -policy Vault_7Y
Rule Keep Preserve
weekly_archive 365 true
In Year 3 of the 7-year retention cycle, the company is sued. The legal department orders the Security Analyst to place an indefinite Legal Hold on the destination snapshot weekly_archive_2023_05_10 residing on vol_financials_vault.
The analyst successfully applies the Legal Hold via the ONTAP CLI.
Fast forward to Year 8. The lawsuit is still actively ongoing. The 7-year retention period defined by the SnapVault policy has mathematically expired for that specific snapshot.
Based on the architectural interaction between SnapLock WORM expiration and active Legal Holds, what is the exact status of snapshot weekly_archive_2023_05_10 on the destination array?
- A . The snapshot is automatically transitioned from a SnapLock Compliance state to a SnapLock Enterprise state to accommodate the expired policy, allowing the legal team to extract the data via SMB before it purges.
- B . The ONTAP storage controller mathematically isolates the snapshot into a hidden, air-gapped aggregate and forces the SnapVault engine to perform a full baseline re-initialization over the WAN.
- C . Upon detecting an active Legal Hold, the WAFL engine prevents deletion of the snapshot. The snapshot remains in a locked WORM state, unaffected by the expiration of the 7-year retention policy, until an administrator explicitly removes the Legal Hold.
- D . As defined by the SnapVault policy with a 7-year retention period, the replication engine is configured to automatically delete the snapshot when the retention timer expires. This automated deletion process takes precedence over any manually applied Legal Hold.