Free D-ISM-FN-01 sample questions

Correct answer: Dell PowerMax with SRDF/S (Synchronous)

For a near-zero RPO, synchronous replication is required. SRDF/S (Synchronous) ensures that a write I/O is committed to both the primary and secondary sites before the host is acknowledged, guaranteeing zero data loss in the event of a primary site failure. Asynchronous replication introduces a small delta of data loss, and snapshot-based methods have a much higher RPO. CDP is excellent for granular recovery but SRDF/S is the gold standard for zero-RPO block replication over this distance.

Correct answer: An edge computing model

Edge computing is specifically designed for scenarios where data needs to be processed close to its source to reduce latency and conserve network bandwidth. By deploying compute and storage resources at the 'edge' (the factory floor), the company can perform real-time analytics and control machinery without the delay of a round-trip to a central data center. The other models involve centralized processing, which would not meet the low-latency requirement.

Correct answer: RAID 10 (1+0)

RAID 10 (a stripe of mirrors) is the best choice for write-intensive workloads like database transaction logs. It offers excellent write performance because it does not have the write penalty associated with parity calculations found in RAID 5 and RAID 6. It also provides redundancy by mirroring data, protecting against a single drive failure within each mirrored pair.

Correct answer: Switch: F_Port, HBA: N_Port

An N_Port (Node Port) is an end device in the fabric, such as a server HBA or a storage array port. An F_Port (Fabric Port) is a port on a switch that connects to an N_Port. Therefore, the HBA has an N_Port, and the switch port it connects to is an F_Port. E_Ports are used to connect switches to each other (Inter-Switch Links).

Correct answer: Dell PowerProtect Cyber Recovery

Dell PowerProtect Cyber Recovery is specifically designed to combat ransomware by creating a secure, isolated recovery vault. It uses an operational air gap, meaning the connection between the production environment and the vault is severed and only opened for brief, policy-driven data synchronization. This isolation prevents malware from traversing the network to compromise the recovery data, providing a clean copy for restoration.

Correct answer: Another process, such as an antivirus scan or a data synchronization tool, is modifying files and resetting the archive bit after the backup completes.

Incremental backups that use the archive bit rely on the bit being cleared after a file is backed up. If another process (like an antivirus scanner touching every file) runs after the backup, it can reset the archive bit on all files. This makes the backup software think every file has been modified, causing the next incremental backup to behave like a full backup and transfer all data again.

Correct answer: Object storage system like Dell ECS

Object storage is the ideal choice for this use case. It is designed for massive scalability and durability, often across geographic locations. Its flat namespace and metadata-rich objects are perfect for unstructured data like video files. Most importantly, it provides access through RESTful APIs (like S3), which directly meets the requirement for web application integration.

Correct answers: Priority-based Flow Control (PFC); Enhanced Transmission Selection (ETS)

Correct answer: False

A core principle of software-defined storage (SDS) is the abstraction and decoupling of the storage control plane (software) from the underlying physical hardware. This allows SDS solutions like Dell PowerFlex to run on commodity, off-the-shelf server hardware, providing flexibility and avoiding hardware vendor lock-in.

Correct answer: Simplified lifecycle management and automated, unified operations.

The primary advantage of HCI solutions like VxRail is the simplification of IT operations. By integrating compute, storage, and virtualization into a single, pre-engineered system, it streamlines deployment, management, scaling, and patching. This automated and unified lifecycle management significantly reduces operational complexity compared to managing separate silos of servers, storage arrays, and networks.