9534299
Pregunta 1
Pregunta
An application generates 4200 small random I/Os at peak workloads with a read/write ratio of 2:1. What is the disk load at peak activity for a RAID 6 configuration?
Respuesta
-
2800
-
5600
-
11200
-
8400
Pregunta 2
Pregunta
What is an accurate statement about a software RAID implementation?
Respuesta
-
Supports the upgrade of RAID software on incompatible O/S
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Uses CPU cycles of a compute system to perform RAID calculation
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Uses a specialized hardware controller to perform RAID calculation
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Supports all RAID levels
Pregunta 3
Pregunta
What is an accurate statement about a hardware RAID implementation?
Respuesta
-
Uses CPU cycles of a compute system to perform RAID calculations
-
Uses a specialized hardware controller installed on a storage array
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Offers a low-cost solution for providing disk protection
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Requires a RAID controllerand operating system to be compatible
Pregunta 4
Pregunta
Which type of LUN provides full control for precise data placement and allows an administrator to create LUNs on different RAID sets if there is workload contention?
Respuesta
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Thin
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Traditional
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Journal
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Bitmap
Pregunta 5
Pregunta
Which LUN expansion technique provides both capacity expansion and performance improvement?
Respuesta
-
Virtual metaLUN
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Concatenated metaLUN
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Striped metaLUN
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Partitioned metaLUN
Pregunta 6
Pregunta
What provides the ability to automatically relocate extents across physical storage drives over the entire pool when new drives are added to the pool?
Respuesta
-
Storage pool tiering
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Storage pool rebalancing
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Extent relocation
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Automated extent tiering
Pregunta 7
Pregunta
What is a benefit of implementing the server flash caching technology in a storage environment?
Respuesta
-
Improves the network performance during peak workloads
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Eliminates the need for cache on a storage system
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Reduces the number of storage systems in a data center
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Provides performance acceleration for read intensive workloads
Pregunta 8
Pregunta
Which technique protects the data in cache from power failures?
Respuesta
-
Mirroring
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Cache tiering
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Vaulting
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Idle flushing
Pregunta 9
Pregunta
Which EMC block-based storage system uses a cluster design to scale both capacity and performance?
Respuesta
-
Isilon
-
XtremSF
-
ScaleIO
-
XtremIO
Pregunta 10
Pregunta
To improve performance, which EMC product allows a PCIe flash card to be deployed in a compute system?
Respuesta
-
XtremIO
-
ScaleIO
-
XtremCache
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XtremSF
Pregunta 11
Pregunta
Which NAS implementation requires separate management of the NAS head and the storage?
Respuesta
-
Scale-out
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Gateway
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Integrated
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Unified
Pregunta 12
Pregunta
Which operation is performed by a scale-out NAS cluster when clients send data to the cluster?
Respuesta
-
Data is consolidated into a block and then stored on the NAS head
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Data is divided and stored on multiple nodes in parallel
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NAS file system and cluster grow dynamically to store the data
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Data is evenly distributed to every file system in the cluster
Pregunta 13
Pregunta
What is an accurate statement about the Network File System (NFS) protocol?
Respuesta
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Provides a set of remote procedure calls to access a remote file system
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Uses the server message block protocol to provide file locking capability
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Translates block I/O requests from a file system into object-level requests
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Automatically scales the file systems on clients as the workload increases
Pregunta 14
Pregunta
What is an accurate statement about the Common Internet File System (CIFS) protocol?
Respuesta
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Uses a Remote Procedure Call mechanism to provide access to the CIFS supported file systems
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Contains an open variation of the stateless user datagram protocol that stores information about open files
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Uses file system locking to enable users to simultaneously overwrite all metadata of a file system
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Enables a CIFS server to maintain connection information regarding every connected client
Pregunta 15
Pregunta
What is an accurate statement about an integrated NAS controller?
Respuesta
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Stripes data across multiple NAS systems for data protection
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Contains a specialized operating system dedicated to file serving
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Abstracts and pools NAS controllers across multiple NAS systems
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Contains an FC Forwarder that is optimized for file sharing functions
Pregunta 16
Pregunta
What accurately describes the function of the policy engine in a file-level storage tiering environment?
Respuesta
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Creates a stub file in secondary storage pointing to data on the primary storage
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Runs the backup agent and determines the files to be copied to the secondary storage
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Facilitates moving data from primary storage to secondary storage based on pre-defined policies
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Ensures that primary and secondary storage have identical data for compliance
Pregunta 17
Pregunta
Which process uses a file-level storage tiering technique to perform policy-based data movement?
Respuesta
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Backup
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Replication
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Deduplication
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Archiving
Pregunta 18
Pregunta
Which elements are associated with an object in an object-based storage system?
Respuesta
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Data, metadata, object ID, and attributes
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Metadata, object ID, attributes, and file path
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LUN ID, data, metadata, and object ID
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Object ID, attributes, LUN ID, and file path
Pregunta 19
Pregunta
Which EMC product is a hyper-scale storage infrastructure that provides universal accessibility with support for object and HDFS?
Respuesta
-
XtremIO
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Data Domain
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ECS Appliance
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Centera
Pregunta 20
Pregunta
In an object-based storage system, data is divided into 9 data segments and 3 coding segments using the erasure coding technique. What is the maximum number of disk drive failures against which data is protected by this configuration?
Respuesta
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12
-
9
-
6
-
3
Pregunta 21
Pregunta
In an object-based storage system, data is divided into 10 data segments and 4 coding segments using the erasure coding technique. What is the maximum number of disk drive failures against which data is protected by this configuration?
Respuesta
-
4
-
6
-
10
-
14
Pregunta 22
Pregunta
Which feature of an object-based storage system abstracts and provides a common view of storage independent of location to applications?
Respuesta
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Flexible data access
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Multi-tenancy
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Global namespace
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Scale-out architecture
Pregunta 23
Pregunta
What is an advantage of a software-based object storage implementation?
Respuesta
-
Requires less storage capacity to store a large number of objects
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Provides the flexibility to reuse the existing infrastructure
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Provides the flexibility to create more than one object ID for an object
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Requires less hardware to support scalable architecture
Pregunta 24
Pregunta
Which EMC product provides a software-defined platform that supports both block and file storage services?
Respuesta
-
ScaleIO
-
ViPR Controller
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Elastic Cloud Storage
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XtremIO
Pregunta 25
Pregunta
Which EMC product provides a software-defined storage platform that supports object storage services?
Respuesta
-
Elastic Cloud Storage
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ScaleIO
-
ViPR Controller
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XtremIO
Pregunta 26
Pregunta
Which EMC product provides a software-defined storage platform to create a compute-based storage area network?
Respuesta
-
ScaleIO
-
Isilon
-
XtremIO
-
Atmos
Pregunta 27
Pregunta
Which component of a software-defined storage (SDS) environment manages and provisions storage?
Respuesta
-
REST API
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SDS controller
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SDS web service
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Storage agent
Pregunta 28
Pregunta
Which component of a software-defined storage (SDS) environment enables integration with external monitoring tools?
Respuesta
-
SDS web service
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REST API
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Metadata service
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Storage agent
Pregunta 29
Pregunta
What is a function of the metadata manager in a compute-based storage area network (SAN)?
Respuesta
-
Performs the I/O operations on the local storage of a compute system as requested by a client
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Controls all data read and write operations in a compute-based SAN
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Provides an interface to the software-defined storage controller
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Controls load balancing and data migration in a compute-based SAN
Pregunta 30
Pregunta
Which global addressing does the REST application programming interface use for the discovery of a storage service?
Respuesta
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Namespace
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Uniform Resource Identifier
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Extensible Markup Language
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Controller-provided MAC address
Pregunta 31
Pregunta
What is a benefit of link aggregation in a SAN?
Respuesta
-
Distributes the network traffic across all virtual SANs, ensuring even virtual SAN utilization
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Optimizes performance by consolidating all inter-switch links into a single physical link
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Provides a higher throughput than a single inter-switch link can provide
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Provides the flexibility to deploy the same inter-switch links for both FC and iSCSI traffic
Pregunta 32
Pregunta
What accurately describes link aggregation in a SAN?
Respuesta
-
Combines two or more parallel inter-switch links into a single logical inter-switch link
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Consolidates compute-to-compute traffic and storage traffic into a single inter-switch link
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Replaces multiple parallel inter-switch links by a single physical inter-switch link
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Aggregates the data transmission rate of all HBA and storage system port pairs
Pregunta 33
Pregunta
What is a benefit of a storage area network (SAN)?
Respuesta
-
Ensures secure data transmission using only channel technologies
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Ensures high response times without the protocol overhead
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Enables consolidation of control and data planes in a single system
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Enables compute systems across locations to access shared storage
Pregunta 34
Pregunta
What is a characteristic of software-defined networking?
Respuesta
-
Abstracts and separates the control plane from the data plane
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Controller in network switches takes over data plane functions
-
Data plane sends instructions to the control plane to handle network traffic
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External software combines both data plane and control plane functions
Pregunta 35
Pregunta
What is a function of the FC-1 layer of the Fibre Channel (FC) protocol stack?
Respuesta
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Provides FC addressing
-
Defines data encoding
-
Maps upper layer protocols to FC layers
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Defines the physical interface
Pregunta 36
Pregunta
What keeps the name server up-to-date on all switches in a fabric?
Respuesta
-
Management server
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Zoning
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SW-RSCN
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FLOGI
Pregunta 37
Pregunta
Which data structure enables two node ports to identify and manage a set of information units in a Fibre Channel (FC) SAN?
Respuesta
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Domain
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Sequence
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Frame
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Exchange
Pregunta 38
Pregunta
What is a benefit of block-level storage virtualization?
Respuesta
-
Enhances performance by limiting the RSCN traffic
-
Enables the online expansion of virtual volumes
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Improves security through logical segmentation of block storage devices
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Increases scalability through separation of FC addresses across VSANs
Pregunta 39
Pregunta
Which fabric service distributes SW-RSCNs to the other switches in a Fibre Channel SAN?
Respuesta
-
Fabric controller
-
Fabric login server
-
Fabric management server
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Name server
Pregunta 40
Pregunta
What accurately describes a VSAN?
Respuesta
-
A logical fabric on an FC SAN that has a 1-to-1 relationship with a zone in the FC SAN
-
A logical fabric on an FC SAN that enables communication among a group of nodes
-
A logical fabric across FC SANs that aggregates the FC SANs to create a network pool
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A logical fabric across FC SANs that allows non-disruptive file mobility between the SANs
Pregunta 41
Pregunta
What maps the logical path of a file system to its physical path in a file-level virtualization
implementation?
Respuesta
-
Remote procedure call
-
Global namespace
-
Distributed file system
-
Cache coherency
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