EMC E10-001 Online Practice Questions and Exam Preparation

EMC E10-001 Online Questions & Answers

• Question 131:

  In what way does an integrated NAS solution differ from a Gateway NAS solution?

  A. Integrated NAS manages storage devices through NAS software. Gateway NAS relies on storage array management software to manage storage devices.
  B. Integrated NAS allows both file and block level access to the clients. Gateway NAS allows only block level access to the clients.
  C. Integrated NAS utilizes specialized operating systems. Gateway NAS utilizes generic operating systems.
  D. Integrated NAS uses Fibre Channel disks only. Gateway NAS uses both Fibre Channel and SATA disks.
  B. Integrated NAS allows both file and block level access to the clients. Gateway NAS allows only block level access to the clients.

  ---

  NAS Implementation

  The unified NAS consolidates NAS-based and SAN-based data access within a unified storage platform and provides a unified management interface for managing both the environments.

  Unified NAS performs file serving and storing of file data, along with providing access to block- level data. It supports both CIFS and NFS protocols for file access and iSCSI and FC protocols for block level access. Due to consolidation of

  NAS-based and SAN-based access on a single storage platform, unified NAS reduces an organization's infrastructure and management costs.

  A gateway NAS device consists of one or more NAS heads and uses external and independently managed storage. Similar to unified NAS, the storage is shared with other applications that uses block-level I/O. Management functions in this

  type of solution are more complex than those in a unified NAS environment because there are separate administrative tasks for the NAS head and the storage.

  EMC E10-001 Student Resource Guide. Module 7: Network-Attached Storage (NAS)

• Question 132:

  Which technology enables the detachment of the user state, the O/S, and has the applications from end- point devices?

  A. Desktop virtualization
  B. Compute virtualization
  C. Application virtualization
  D. Memory virtualization
  A. Desktop virtualization

• Question 133:

  Consider a storage array with two LUNs that store data for the engineering and marketing departments One LUN is masked to the engineering department; the second LUN is masked to the marketing department.

  What is a benefit of this architecture?

  A. Both departments can access all the data
  B. Both departments can replicate all the data
  C. Data availability and performance is increased
  D. Risk to data integrity and security is reduced
  D. Risk to data integrity and security is reduced

  ---

  LUN Masking

  LUN masking is a process that provides data access control by defining which LUNs a host can access. The LUN masking function is implemented on the storage array. This ensures that volume access by hosts is controlled appropriately,

  preventing unauthorized or accidental use in a shared environment.

  For example, consider a storage array with two LUNs that store data of the sales and finance departments. Without LUN masking, both departments can easily see and modify each other's data, posing a high risk to data integrity and security.

  With LUN masking, LUNs are accessible only to the designated hosts. EMC E10-001 Student Resource Guide. Module 4: Intelligent Storage System

• Question 134:

  What is a key advantage of performing cumulative backups compared to incremental backups for the same data?

  A. Facilitates faster restores
  B. Facilitates faster backups
  C. Reduces the storage space required for backups
  D. Eliminates the need for full backups
  A. Facilitates faster restores

• Question 135:

  What is an advantage of reporting on storage arrays?

  A. Planning for capacity
  B. Monitoring the number of arrays
  C. Monitoring the number of disks in a RAID group
  D. Planning for storage groups
  A. Planning for capacity

  ---

  Reporting

  Reporting on a storage infrastructure involves keeping track and gathering information from various components/processes. This information is compiled to generate reports for trend analysis, capacity planning, chargeback, and performance.

  Capacity planning reports contain current and historic information about the utilization of storage, file systems, database tablespace, ports, and so on. Configuration and asset management reports include details about device allocation, local

  or remote replicas, and fabric configuration.

  This report also lists all the equipment, with details, such as their purchase date, lease status, and maintenance records. Chargeback reports contain information about the allocation or utilization of storage infrastructure components by

  various departments or user groups. Performance reports provide details about the performance of various storage infrastructure components. EMC E10-001 Student Resource Guide. Module 15: Managing the Storage Infrastructure

• Question 136:

  What is the correct sequence of steps to store objects in an object-based storage device (OSD)?

  Select and Place

  

  

• Question 137:

  Which cache management algorithm occurs continuously, at a modest rate, when the cache utilization level is between the high and low watermark?

  A. Forced flushing
  B. Idle flushing
  C. Vault flushing
  D. High watermark flushing
  B. Idle flushing

  ---

  Cache Management: Watermarking

  As cache fills, the storage system must take action to flush dirty pages (data written into the cache but not yet written to the disk) to manage space availability. Flushing is the process that commits data from cache to the disk. On the basis of

  the I/O access rate and pattern, high and low levels called watermarks are set in cache to manage the flushing process. High watermark (HWM) is the cache utilization level at which the storage system starts high-speed flushing of cache

  data. Low watermark (LWM) is the point at which the storage system stops flushing data to the disks. The cache utilization level drives the mode of flushing to be used:

  -Idle flushing: Occurs continuously, at a modest rate, when the cache utilization level is between the high and low watermark.

  -High watermark flushing: Activated when cache utilization hits the high watermark. The storage system dedicates some additional resources for flushing. This type of flushing has some impact on I/O processing. ?Forced flushing: Occurs in

  the event of a large I/O burst when cache reaches 100 percent of its capacity, which significantly affects the I/O response time. In forced flushing, system flushes the cache on priority by allocating more resources.

  EMC E10-001 Student Resource Guide. Module 4: Intelligent Storage System

• Question 138:

  What is a characteristic of EMC Atmos?

  A. Consolidates block, file, and object accesses in one solution
  B. Supports storage multitenancy
  C. Provides compute, storage, network, and virtualization products in one solution
  D. Provides source-based deduplication
  B. Supports storage multitenancy

  ---

  EMC Atmos EMC Atmos supports object-based storage for unstructured data, such as pictures and videos. Atmos combines massive scalability with specialized intelligence to address the cost, distribution, and management challenges associated with vast amounts of unstructured data.

  Atmos can be deployed in two ways: as a purpose-built hardware appliance or as software in VMware environments, where Atmos VE can leverage the existing servers and storage. The hardware appliance is comprised of servers (nodes)

  connected to standard disk enclosures.

  The rack includes a 24-port Gigabit Ethernet switch to provide internode communication.

  The Atmos software is installed on each node.

  Atmos VE enables users to exploit the power of Atmos in a virtualized environment. It can be deployed on a virtual machine in VMware ESXi hosts and configured with the VMware certified back-end storage.

  Following are the key features offered by EMC Atmos:

  -Policy-based management: EMC Atmos improves operational efficiency by automatically distributing content based on business policy. The administrator-defined policies dictate how, when, and where the information resides.

  -Protection: Atmos offers two options to protect the objects, replication and Geo Parity:

  Replication ensures that the content is available and accessible by creating redundant copies of an object at multiple designated locations.

  Geo Parity ensures that the content is available and accessible by dividing objects into multiple segments plus parity segments and distributing them to one or more designated locations. -Data services: EMC Atmos includes the data services,

  such as, compression, and deduplication. These features are native to Atmos and can be managed and accessed via a policy. -Web services and legacy protocols: EMC Atmos provides flexible web services access (REST/SOAP) for web-

  scale applications and file access (CIFS/NFS/Installable File System/Centera API) for traditional applications. -Automated system management: EMC Atmos provides auto-configuring, auto-managing, and auto- healing capabilities to reduce

  administration and downtime.

  -Multitenancy: EMC Atmos enables multiple applications to be served from the same infrastructure. Each application is securely partitioned and cannot access the other application's data. Multitenancy is ideal for service providers or large

  enterprises that want to provide cloud computing services to multiple customers or departments allowing logical and secure separation within a single infrastructure. -Flexible administration: EMC Atmos can be managed via a graphical user

  interface (GUI) or command line interface (CLI).

  EMC E10-001 Student Resource Guide. Module 8: Object-based and Unified Storage

• Question 139:

  What is an accurate statement about Software as a Service?

  A. A consumer has limited control over user-specific application configuration settings.
  B. A consumer has control over the operating systems and deployed applications.
  C. A consumer has control over the configuration settings of the application-hosting environment.
  D. A consumer has limited control over select networking components, such as host firewalls.
  A. A consumer has limited control over user-specific application configuration settings.

• Question 140:

  What is an accurate statement about the Data Center Bridging Exchange protocol?

  A. Enables Converged Enhanced Ethernet (CEE) devices to convey and configure their features with other CEE devices
  B. Creates virtual FCoE links over an existing Ethernet network to transport FC frames over virtual links independently
  C. Enables an FCoE switch to send signals to other FCoE switches that need to stop or slow down their transmissions
  D. Enables an FCoE switch to transport both TCP/IP and FC frames over a single virtual FCoE link
  A. Enables Converged Enhanced Ethernet (CEE) devices to convey and configure their features with other CEE devices

  ---

  Data Center Brdiging Exchange Protocol (DCBX)

  DCBX protocol is a discovery and capability exchange protocol, which helps Converged Enhanced Ethernet devices to convey and configure their features with the other CEE devices in the network. DCBX is used to negotiate capabilities

  between the switches and the adapters, and it allows the switch to distribute the configuration values to all the attached adapters. This helps to ensure consistent configuration across the entire network.

  EMC E10-001 Student Resource Guide. Module 6: IP SAN and FCoE