D-ISM-FN-01 Exam Dumps - Dell Information Storage and Management Foundations v2 Exam

Routers are networking devices that determine the optimal path for data packets to travel across networks. They primarily operate at Layer 3 of the OSI model, known as the Network Layer. This layer is responsible for logical addressing and routing, enabling data to move between different networks.

Layer 2 (Data Link Layer):Handles physical addressing and is the primary domain of switches.

Layer 3 (Network Layer):Manages logical addressing (IP addresses) and routing; the main operational layer for routers.

Layer 4 (Transport Layer):Ensures reliable data transfer but is not the primary layer for routers.

Layer 7 (Application Layer):Interfaces with end-user applications; not relevant to routing functions.

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).

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.

OSD gateways provide access to object storage systems through APIs. The most common interfaces are:

REST (Representational State Transfer): A stateless protocol using standard HTTP methods, widely used for web services.

SOAP (Simple Object Access Protocol): A protocol for exchanging structured information in web services, using XML.

These APIs allow applications to interact with object storage systems over HTTP/HTTPS protocols.

SSH and SMB: SSH is for secure shell access; SMB is for file sharing, not typically used for object storage.

HTTP and HTTPS: These are transport protocols; while used by REST and SOAP, they are not interfaces themselves.

NFS and CIFS: File-based interfaces, not used for object storage.

FCIP (Fibre Channel over IP) is a protocol used to connect Fibre Channel SANs across geographically dispersed locations over IP networks. It does this byencapsulating Fibre Channel frames into IP packets(Layer 3). This allows FC SAN traffic to be transmitted across IP-based WANs.

Ethernet networks(Layer 2) are not involved in the FCIP encapsulation process directly because FCIP uses IP packets.

Splitting LAN/SAN datais not the method used; FCIP encapsulatesall FC frames.

Separating LAN and SAN dataalso does not describe the tunneling function.

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.

Confidentialityensures that sensitive data is only accessible to authorized users. This is a primary goal of information security, achieved by:

Access controls(authentication, authorization)

Encryptionto protect data in transit and at rest

Monitoring and auditingto detect unauthorized access

Availability:Ensuring data/services are accessible when needed.

Accountability:Tracking actions of users (audit trails).

Integrity:Protecting data from unauthorized modification.

Data deduplication is a technique that eliminates redundant copies of data, storing only unique instances. When multiple copies of the same data are found, deduplication replaces them with references to a single stored copy, significantly reducing storage requirements.

Data replication:Involves copying data to another location for redundancy, not reducing storage size.

Data encryption:Secures data but doesn't affect storage size.

Data compression:Reduces data size by encoding information more efficiently but doesn't eliminate duplicates.