NS0-162 Exam Dumps : NetApp Certified Data Administrator (ONTAP)

The security method that would be used to authenticate targets and initiators in an ISCSI environment is CHAP. CHAP stands for Challenge Handshake Authentication Protocol, and it is a method that validates the identity of targets and initiators during the initial link. CHAP uses a shared secret (a password) that is exchanged between the target and the initiator in a challenge-response manner. CHAP can be used in both one-way and mutual modes, depending on whether both parties need to authenticate each other or not. The other options are not valid for this scenario because:

• NIS is a network information service that provides centralized management of user accounts and host names, but it does not provide authentication for ISCSI devices.
• LDAP is a protocol for accessing and managing directory services, such as user and group information, but it does not provide authentication for ISCSI devices.
• /etc/hosts is a file that maps host names to IP addresses, but it does not provide authentication for ISCSI devices. References :- How iSCSI authentication works, Securing iSCSI Devices, Configure iSCSI authentication

The Active IQ Web site is a tool that provides insights and recommendations for your NetApp systems based on data collected from AutoSupport. You can use the Active IQ Web site to accomplish the task of locating empty SAS ports remotely by accessing the Inventory page and selecting the HA pair. You can then view the details of each node and see the port utilization and availability for each SAS port. The other tools are not suitable for this task because they do not provide the specific information about the SAS ports of your HA pair. ONTAP System Manager is a web-based interface for managing ONTAP clusters, but it does not show the port utilization and availability for SAS ports. Hardware Universe is a tool that provides information about the compatibility and specifications of NetApp hardware products, but it does not show the port utilization and availability for SAS ports. Interoperability Matrix Tool is a tool that provides information about the supported configurations and software versions for NetApp products, but it does not show the port utilization and availability for SAS ports. References :- Active IQ Web - NetApp, Active IQ Inventory - NetApp, Active IQ Documentation - NetApp

Cloud Backup Service is an ONTAP native solution that supports using SnapMirror to mirror your data to public cloud object storage. Cloud Backup Service enables you to back up your ONTAP volumes to Amazon S3 or Azure Blob storage using SnapMirror Cloud technology. You can also restore your data from cloud storage to a different volume or cluster. Cloud Backup Service leverages SnapDiff V3, which is a feature that reduces the amount of data transferred and stored in the cloud by only sending the changed blocks between snapshots. Cloud Backup Service also preserves the ONTAP storage efficiencies and encryption in the cloud. The other options are not correct because they are not ONTAP native solutions or they do not support using SnapMirror to mirror your data to public cloud object storage. Flash Pool is a feature that combines SSDs and HDDs in a hybrid aggregate to improve performance and capacity. Cloud Compliance service is a feature that provides data privacy and security insights for your cloud data. Cloud Sync is a service that enables data synchronization between different sources and destinations, such as NFS, SMB, S3, Azure Blob, Google Cloud Storage, and more. References :- Back up data to the cloud using SnapMirror, A New Backup Architecture for NAS Systems - SnapDiff V3, SnapMirror in the Cloud: New Uses for NetApp Data Replication