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

Big Data's"variety"refers to the challenge of integrating different data types (structured, semi-structured, unstructured) from various sources.

The key challenge is tocombine and manage this data cost-effectively, ensuring analytics systems can process it seamlessly.

Generating real-time datais about velocity, not variety.

Storing data over yearsis about volume.

Reducing volumeis more about data management, not variety.

RAID 6 uses dual parity to provide fault tolerance, which requires additional calculations during write operations. This introduces a write penalty, as the system must compute and write two sets of parity data for each write operation, leading to slower write performance compared to other RAID levels.

Insufficient storage on the RAID controller:Would affect storage capacity, not write performance.

High read I/O load on the array:Impacts read performance, not write performance.

Increased network latency:Affects data transfer times but not the internal write operations of the RAID array.

Write penalty associated with dual parity calculations:The most likely cause of slow write performance in RAID 6.

NAS systemsare purpose-built to handle file sharing and provide:

Centralized file accessfor multiple clients.

Optimized file sharingthrough dedicated hardware and software.

Efficient managementwith file-level protocols (NFS, CIFS/SMB).

FC protocols(Option B) are for block storage, not NAS.

Object ID(Option C) relates to object storage, not NAS.

Speed (Option D): While NAS can offer good speed, its main advantage is shared file access.

AnIDPS (Intrusion Detection and Prevention System)monitors network traffic and system activities for signs of malicious activity and policy violations. It canidentify and blocksecurity threats in real-time.

Antivirus software:Focuses on detecting/removing malware, not broader vulnerabilities.

Password encryption:Secures credentials but does not identify vulnerabilities.

IAM:Manages access but does not detect attacks.

Rapid elasticity is a cloud computing characteristic that allows resources to be scaled up or down quickly and automatically, depending on demand. In the scenario of a sudden traffic surge, rapid elasticity enables the infrastructure to handle increased loads without manual intervention.

Measured service:Refers to monitoring and billing based on resource usage.

On-demand self-service:Allows users to provision resources as needed.

Resource pooling:Involves sharing resources among multiple users.

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.

5Grepresents the fifth generation of mobile networks and offers several significant advantages over 4G, 3G, and earlier generations:

Increased speed:5G delivers data speeds up to 100 times faster than 4G LTE.

Enhanced capacity:Supports more devices per square kilometer, crucial for IoT and smart cities.

Low latency:Reduces delay in data transmission, enabling real-time applications like remote surgeries or autonomous vehicles.

Increased bandwidth(Option B) is part of the overall increased capacity.

Reduced distance(Option C) is incorrect; 5G uses shorter wavelengths, meaning shorter range.

Lower cost(Option D) is not a key advantage of 5G technology itself.

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.