Pass the EMC DCA-ISM D-ISM-FN-01 Questions and answers with ExamsMirror

RAID 1isdisk mirroring. It writes identical copies of data to two disks simultaneously, providing redundancy.

Minimum of 2 disks (no parity, no striping).

Excellent read performance, write performance equivalent to a single disk.

Providesfault tolerancebecause data is duplicated.

A screenshot of a computer AI-generated content may be incorrect.

✅Flexible data access method:Object storage can offer multiple ways to access and interact with stored data, such as REST/SOAP APIs (for object-based access) and file-sharing protocols (CIFS, NFS) for file-level access.

✅Metadata-driven policy:Object storage uses rich metadata to define how objects are placed, protected, and managed, driven by policies that respond to service-level requirements.

✅Data protection:Object storage systems implement data protection at a global scale through replication or erasure coding to ensure data durability and availability.

✅Global namespace:Object storage abstracts physical locations, providing a single namespace (a unified view) so that applications can seamlessly access data regardless of where it physically resides.

Signature-based detectionis the most common method of malware detection. It works by comparing files and data to a database of known malware signatures:

Fast and efficient for known threats.

Updated regularly by security vendors.

Reputation-based:Looks at the trustworthiness of files/domains.

Behavioral:Monitors actions and identifies suspicious patterns.

Heuristic:Detects new malware based on file behaviors and patterns, useful for unknown threats.

Remote data protection and recovery solutions, like replication and cloud-based backup, are primarily designed to ensuremaximum application and information availability. They protect data in the event of:

Local failures(disk, server, or site outages)

Natural disasters(floods, fires)

Ransomware attacks

By having off-site copies and failover options, businesses maintain continuous access to critical data.

VM cloningallows administrators to createexact copiesof a virtual machine quickly.

Saves time compared to manually configuring new VMs.

Useful for testing, development, and scaling environments.

Each clone can be independently modified after creation.

Same IP addressis typically not the case (clones get unique addresses).

Snapshotsprovide rollback points, not full VM clones.

Performancedoes not improve because of cloning itself.

Thefirst step in any ML projectis tocollect the datasetsthat will be used to train and validate the model.

This data collection step ensures you haveenough representative examples.

After this, data is analyzed, learning type is chosen, and the model is trained.

To implement anFC-NVMe SAN(NVMe over Fibre Channel), you need:

NVMe storage systemsthat expose NVMe namespaces.

FC-NVMe capable switchesthat support the new NVMe protocol over Fibre Channel.

Servers with NVMe HBAs(already mentioned in the question).

Option B:Ethernet networks are for NVMe-oF over TCP/RoCE, not FC-NVMe.

Option E:These drivers are for TCP/RoCE, not FC transports.

Native NVMeis a protocol designed for direct-attached storage (DAS) environments. It allows a host to communicate with NVM storage devices (like NVMe SSDs) within the same server.

Limitation:Native NVMedoes notsupport external NVMe storage connectivity beyond the server.

To connect to external shared NVMe storage, protocols likeNVMe over Fabrics (NVMe-oF)are used.

TheTransport layer (Layer 4)of the OSI model ensures reliable data transfer between systems by providing:

End-to-end connections– manages communication sessions

Sequencing– orders data packets

Integrity– error detection and correction

Session (Layer 5): Manages sessions and controls dialogues between systems.

Data Link (Layer 2): Deals with local network frame delivery.

Presentation (Layer 6): Translates data formats (like encryption, compression).

Using SSDs as asecondary cache(sometimes called a “flash cache”) helps:

Improve read performanceby storing frequently accessed data in the faster SSDs.

Reduce latency for read requests because SSDs are much faster than traditional spinning hard drives (HDDs).

Power consumption (A): SSDs do use less power, but the primary goal here is performance.

Data backup (C): SSD cache doesn’t impact backup operations.

Storage capacity (D): This is not the main focus; the SSDs act as a cache layer only.