EMC - E20-001 Flashcards

Test 1
Terms Definitions
Data is being replicated from Site A to site B using disk buffering to create extended distance consistent point in time copies every hour. In the event of a site failure at A, what is the maximum amount of data that will be missing at site B?A. 1 hourB.
B. 2 hours
What is a remote replication solution for EMC CLARiiON storage systems?A. MirrorView/AB. SnapViewC. SRDF/ARD. TimeFinder
A. MirrorView/A
Which represents a common implementation of a storage network with limited scalability?A. CSMA/CDB. Fibre Channel Arbitrated LoopC. Store and ForwardD. Switched Fabric
B. Fibre Channel Arbitrated Loop (FCAL)
What is the process that writes physical address information to a disk?A. ConcatenatingB. FormattingC. PartitioningD. Striping
B. Formatting
The Recovery Point Objective (RPO) of a company is 4 hours. Which statement is true in the event of a disaster?A. Must be able to restart their network within 4 hours.B. Must be able to restart their servers within 4 hours.C. Must be able to resume produc
D. No more than 4 hours of production data can be lost.
Which technology is designed for storage of fixed content data?A. CASB. DASC. NASD. SAN
A. CAS
In SAN, if the primary concern is cabling flexibility, what method of zoning should be employed?A. Hard ZoningB. Mixed ZoningC. Port ZoningD. WWN Zoning
D. WWN Zoning
A disk has Cylinder Head Sector (CHS) values of 1000, 4 and 25. What address range will be used for the Logical Block Address (LBA) values for this disk?A. 0 – 49,999B. 0 – 99,999C. 1 – 50,000D. 1 – 100,000
B. 0 - 99,999
Which key requirement of the Data Center infrastructure addresses the concern of data on storage systems being accessible 24X7?A. AvailabilityB. ManageabilityC. PerformanceD. Scalability
A. Availability
What is the protocol used by Windows client to communicate with a NAS device?A. CIFSB. FCPC. NFSD. SCSI
A. CIFS
What are two parts of cache?A. Bitmap store and dirty storeB. Data store and bitmap storeC. Data store and tag RAMD. Tag RAM and dirty store
C. Data store and tag RAM
Which Data Center element stores customer and product information when the server is connected to an array?A. ApplicationB. DatabaseC. ServerD. Storage Array
B. Database
What do you monitor as part of server performance?A. Filesystem utilizationB. HBA statusC. Memory utilizationD. Power supply status
C. Memory utilization
What is the name of the drive subassembly containing the platters and R/W heads?A. ATAB. HBAC. HDAD. IDE
C. HDA
What is a set of CLARiiON disks used to provide storage space to a host?A. Disk Array EnclosureB. Disk Processor EnclosureC. Logical Unit NumberD. RAID Group
D. RAID Group
What are replicated in storage based remote replication?A. I/Os to source devicesB. Reads from source devicesC. Writes to source devicesD. Writes to target devices
C. Writes to source devices
An application uses 9 GB devices. A full volume local replica of the application is required every 6 hours. Each replica will be kept for 24 hours. How many replica devices are required?A. 50B. 10C. 30D. 40
D. 40
What best describes a Fibre Channel SAN?A. Dedicated storage networkB. Global interconnectivity networkC. Multi-protocol storage networkD. Multipurpose system network
A. Dedicated storage network
Which storage method will make data most accessible?A. JukeboxB. Magnetic DiskC. Optical DiskD. Tape
B. Magnetic Disk
What is a feature of Internal DAS?A. File level I/O utilizationB. High CPU I/O utilizationC. Local storage provisioningD. Simultaneous volume level operating system accessibility
C. Local storage provisioning
Which aspect of monitoring will allow you to predict the possible failure of FC Switch ports before the ports actually fail?A. CapacityB. HealthC. PerformanceD. Security
C. Performance
What are the three key data center management activities that are interdependent?A. CapacityB. HealthC. PerformanceD. Security
C. Performance
What are the three key data center management activities that are interdependent?A. Installation, Configuration, Problem SolvingB. Manageability, Integrity, CostC. Provisioning, Monitoring, ReportingD. Scalability, Accessibility, Security
C. Provisioning, Monitoring, Reporting
Which remote replication method is most affected by the distance between source and target?A. AsynchronousB. Disk bufferingC. Log shippingD. Synchronous
D. Synchronous
Which Celerra component is used to manage and configure the NAS solution?A. Control StationB. Data MoverC. Disk Array EnclosureD. Storage Processor
A. Control Station
When is it necessary to hold application I/O to ensure a consistent copy?A. Just after creating a point in time replicaB. Just before creating a point in time replicaC. Only when an application spans multiple hostsD. Only when an application spans multipl
B. Just before creating a point in time replica
Which statement is true about iSCSI names?A. Every initiator or target has a unique iSCSI nameB. iSCSI name is derived from the IP addressC. Only a target requires an iSCSI nameD. Only an initiator requires an iSCSI name
A. Every initiator or target has a unique iSCSI name
What is the standard layer that resides between managed objects and management software?A. CIFSB. FC-SWC. HDAD. SMI-S
D. SMI-S
What is an advantage of using tape over disk as the backup destination device?A. Faster restore timeB. PortabilityC. RAID ProtectionD. Random access
B. Portability
What is a requirement for a client initiated restore?A. Backup catalog must be availableB. Backup device must be diskC. Must be initiated through a CLID. Separate storage node must exist
A. Backup catalog must be available
What is a reason for implementing single HBA zoning?A. Increases PLOGI efficiencyB. Minimizes impact to nodes after an RSCNC. Prevents host from seeing the same volumes via multiple HBAsD. Reduces the number of zones required in the SAN
B. Minimizes impact to nodes after an RSCN
What is a key management task that applies to all data center elements?A. Capacity managementB. Interval managementC. Server managementD. Switch management
A. Capacity management
What is the advantage of using multiple ISLs between two FC switches?A. AvailabilityB. ManageabilityC. ScalabilityD. Security
A. Availability
What is the basic unit of storage in a CAS implementation?A. BlockB. FileC. FrameD. Object
D. Object
A five disk set is configured as RAID 5. Each disk has a Mean Time Between Failure (MTBF) of 500,000 hours. What is the MTBF of the set?A. 100,000 hoursB. 125,000 hoursC. 1,000,000 hoursD. 2,500,000 hours
A. 100,000 hours
What does a cache dirty bit flag?A. Changed data not yet written to diskB. Changed data written to diskC. Data read from disk but not accessed by the hostD. Data requested by host but not yet fetched
A. Changed data not yet written to disk
What is a disadvantage of synchronous remote replication compared to other methods of remote replication?A. Need for disk buffer spaceB. Need for time stamping writesC. Potential for data lossD. Response time elongation
D. Response time elongation
A local replica of an application was created with pointer based replication technology. What is a requirement to perform a successful restore?A. Save location size must be bigger than the size of all source devicesB. Save location size must be equal to t
C. Source devices must be healthy.
Which component in an EMC Symmetrix Array provides physical connectivity to hosts?A. Back-end adapterB. CacheC. Front-end adaptorD. Storage Processor
C. Front-end adaptor
Which feature applies only to an integrated NAS device?A. Allows external hosts access to storage devicesB. Manages storage devices via array softwareC. Manages storage devices via NAS softwareD. Utilizes external switch access to storage devices
C. Manages storage devices via NAS software
What failure does RAID technology guard against?A. Disk failureB. Host bus Adaptor failuresC. Host failuresD. Switch Failure
A. Disk failure
What is a benefit of SAN?A. Provides file level access to dataB. Provides secure access to dataC. Uses CIFS for transport, ensuring high performanceD. Uses Objects as storage unit
B. Provides secure access to data
What is a factor in performance for DAS?A. Bus typeB. Disk capacityC. LUN numberD. Power consumption
A. Bus type
You have five disks in a RAID 0 set, and have assigned a stripe depth of 128 blocks (64kB). What is the STRIPE size (kB)?A. 64B. 128C. 320D. 256
C. 320
What is a physical component of a storage environment?A. ApplicationB. BusC. Operating SystemD. Protocol
B. Bus
What is a SAN availability management task?A. Configuring redundant fabricsB. LUN maskingC. Monitoring port statusD. Replicating logical volumes
A. Configuring redundant fabrics
Why do array based local replication technologies track changes made to source and target devices after the creation of a replica?A. For a faster initial synchronizationB. For a faster re-synchronizationC. To allow multiple replicasD. To lower Recovery Ti
B. For a faster re-synchronization
A disk is divided into three LUNs. One LUN is presented to a host. How does the LUN appear to the host?A. As a mirrored pairB. As a partition of a diskC. As a RAID arrayD. As a single disk
D. As a single disk
What is a role of the backup server in a backup and recovery environment?A. Gathers data for backupB. Maintains the backup catalogC. Retrieves metadata from the storage nodeD. Writes the data set to the backup device
B. Maintains the backup catalog
A Copy on First Access target is being used for decision support operations. When is data copied from the source to the target?A. A read issued for the first time from a location on the sourceB. A read or write issued for the first time to a location on t
B. A read or write issued for the first time to a location on the target
Why would you implement an iSCSI solution?A. All storage arrays supply GigE portsB. Block storage over IP is much faster than FCC. iSCSI HBAs are inexpensiveD. Leverages existing IP network infrastructure
D. Leverages existing IP network infrastructure
What is a disadvantage of a Fibre Channel hub when compared to a Fibre Channel switch?A. Higher costB. Larger footprintC. Limited interoperabilityD. Limited performance
D. Limited performance
What is a critical design factor when deciding whether or not to deploy IP SAN?A. Application response timeB. HOST HBA typeC. Host memoryD. Number of nodes
A. Application response time
Which component of EMC ControlCenter holds the information collected about the Managed Objects?A. AgentB. RepositoryC. ServerD. Store
B. Repository
Which technology supports high availability of data?A. CachingB. ClusteringC. FlushingD. Journaling
B. Clustering
Which local replication technology does EMC TimeFinder/Mirror implement?A. Copy on First AccessB. Copy on First WriteC. Full Volume MirroringD. Pointer based
C. Full Volume Mirroring
A company has two SAN islands approximately one mile apart. The company wants to link both sites over its public WAN connection. The fabrics must remain separate but allow device access from either site. Which protocol is recommended to connect the sites?
C. iFCP
Which task is an example of monitoring the health of a data center object?A. Detecting when a file system has reached critical utilizationB. Examining the operational status of a device portC. Listing the servers attached to a particular storage arrayD. V
B. Examining the operational status of a device port
A pointer based replica has been created. Source devices are being used for production operations. When is data copied from the source to the save location?A. All reads from a location on the source.B. All writes to a location on the sourceC. First read f
D. First write to a location on the source
In a given environment, the peak writes are 50 MB/s and average writes are 25 MB/. Peak reads are 45 MB/s and average reads are 20 MB/s. How much network bandwidth must be provided if asynchronous remote replication will be used in this environment?A. 20
B. 25 MB/s
What does partitioning do?A. Divides a logical disk into physical volumesB. Divides a logical disk into physical zonesC. Divides a physical disk into logical volumesD. Divides a physical disk into logical zones
C. Divides a physical disk into logical volumes
Which topology increases connectivity within the SAN while conserving overall port utilization?A. Arbitrated LoopB. Full MeshC. Partial MeshD. Core Edge
D. Core Edge
Which remote replication solution has the highest bandwidth requirements?A. Array based synchronous replicationB. Asynchronous ordered writesC. Log shipping over IP networksD. Host based asynchronous LVM Mirroring
D. Host based asynchronous LVM Mirroring
Which statement applies to NAS?A. General purpose server for block level accessB. General purpose server for content addressed dataC. Specialized server for block level data accessD. Specialized server for content addressed data
C. Specialized server for block level data access
What is a benefit of NAS solution?A. Enables the ability to share data across platformsB. Improved network bandwidthC. Improved network performanceD. Introduces block level I/O to the networked environment
A. Enables the ability to share data across platforms
Which protocol is used by a host to access block level storage over IP?A. CIFSB. InfinibandC. iSCSID. NFS
C. iSCSI
What do you monitor as part of an array capacity check?A. Allocated storageB. Back-end throughputC. Disk statusD. Replication process
A. Allocated storage
What is an objective of SMI-S?A. To create a common command line interface for device replication tasksB. To define a complete SAN object modelC. To define a standard GUI feature setD. To limit management of storage arrays only
B. To define a complete SAN object model
Which management task eliminates single points of failure in a data center?A. AvailabilityB. CapacityC. PerformanceD. Security
A. Availabilty
Which statement describes logical volumes?A. May be a partition of a larger physical diskB. May be presented to a host as several larger physical disksC. May consist of interleaved physical disksD. May consist of several file systems
A. May be a partition of a larger physical disk
The queued writes on the source side exceed the size of the dedicated log file. Which remote replication technology requires a full synchronization between source and target in this situation?A. Array based synchronous remote replicationB. Disk buffered c
C. LVM based remote replication
What is a disadvantage of storage array based local replication?A. Cannot span storage arraysB. Replication is performed at the array device levelC. Requires an alternate host for Business Continuance operationsD. Uses host CPU resources
A. Cannot span storage arrays
Which Celerra component allows management of volumes and filesystems?A. Control StationB. Data MoverC. Disk Array EnclosureD. Storage Processor
A. Control Station
What represents the layering of protocols in a Fibre Channel SAN?A. ATA over FCB. FC over SATAC. FC over SCSID. SCSI over FC
D. SCSI over FC
Which statement describes Content Address (CA)?A. A set of functions that enable communication between applicationsB. An identifier that uniquely addresses the content of a file and its locationC. An identifier that uniquely addresses the content of a fil
C. An identifier that uniquely addresses the content of a file and not its location
How does Asynchronous remote replication improve application performance, compared to Synchronous remote replication?A. Reads are serviced by the remote replicaB. Reads are serviced by the sourceC. Writes are acknowledged immediately by the remote replica
D. Writes are acknowledged immediately by the source
What is a benefit of SAN?A. Enables centralized provisioning and management of the storage resourcesB. Leverages existing investment in DAS hardwareC. Provides file level accessD. Simplifies management by enforcing a “one storage volume per host” mode
B. Leverages existing investment in DAS hardware
You have a SAN environment and want to introduce NAS functionality. Which NAS solution is most appropriate?A. Bridged NAS with iSCSI technologyB. Gateway NAS system solutionC. Integrated NAS system solutionD. Integrated NAS system with iSCSI technology
B. Gateway NAS system solution
Which layer of the protocol stack re-transmits dropped packets in iSCSI?A. IPB. SCSIC. TCPD. UDP
C. TCP
What is the process of dividing a disk into logical containers?A. Logical Block AddressingB. PartitioningC. SectoringD. Zoned-bit recording
B. Partitioning
Which remote replication technology absolutely requires host involvement?A. AsynchronousB. Disk buffered consistent point in time (PIT) copiesC. Logical volume manager (LVM) MirroringD. Synchronous
C. Logical Volume Manager (LVM) Mirroring
An application uses ten 9 GB Devices. A pointer based replica of the application is required every 4 hours. Each replia will be kept for 24 hours. The data changes by 10% every 4 hours. How many replica devices are required?A. 6B. 10C. 60D. 90
C. 60
Which statement is true about integrated NAS systems?A. Integrated NAS systems do not require storage array connectionB. NAS components and storage arrays are managed by NAS softwareC. NAS components and storage arrays are managed via array management sof
B. NAS components and storage arrays are managed by NAS software
Which database is used by EMC ControlCenter as the Repository?A. InformixB. Microsoft SQL ServerC. OracleD. Sybase
C. Oracle
What is the advantage of single-mode fiber over multi-mode fiber?A. Better bandwidth since it enables full-duplex connectionB. Enables optical connections over longer distancesC. Lower costD. More compact cabling
B. Enables optical connections over longer distances
What describes DAS?A. Externally deployed content access storageB. Externally deployed file level access storageC. Internally deployed block level access storageD. Internally deployed file level access storage
C. Internally deployed block level access storage
What is the role of the back-end in an intelligent disk system?A. To communicate between Tag RAM and data storeB. To communicate between the host and the storage systemC. To communicate between the host and the switchD. To move data between the cache and
D. To move data between the cache and the disks
What is an advantage of using disk over tape as the backup destination device?A. CostB. Faster restoreC. PortabilityD. Sequential access
B. Faster restore
Which tool can be used to view the logical and physical topology of an MDS SAN?A. Device ManagerB. EWSC. Fabric ManagerD. Switch Manager
C. Fabric Manager
How are nodes typically connected to a two tier Core Edge fabric?A. Host and storage on Edge, ISL only on CoreB. Placement is irrelevantC. Storage on Edge, host on EdgeD. Host on Edge, storage on Core
D. Host on Edge, storage on Core
You have a backup and recovery solution in your environment. Several tapes are available. You want to use different tapes for each set of backup clients. Which backup component do you configure?A. CatalogB. GroupC. PoolD. Storage Node
C. Pool
What is a remote replication solution on EMC Symmetrix Arrays?A. EMC TimeFinder/MirrorB. MirrorView/AC. SnapViewD. SRDF/S
D. SRDF/S
What is a logical component of a storage environment?A. ApplicationB. BusC. MemoryD. Storage array
B. Bus
What is a benefit of reporting on storage arrays?A. Configuring RAIDB. Creating authorization rulesC. Determining filesystem utilizationD. Planning for capacity
D. Planning for capacity
What is a fundamental characteristic of a CAS implementation?A. Distributed object managementB. Globally unique identifier for every data objectC. Object name resolution using DNSD. Object transport via Fibre Channel
B. Globally unique identifier for every data object
What is the Reserved LUN Pool in EMC CLARiiON SnapView replication?A. A pool of LUNs reserved for use by a specific hostB. A pool of LUNs that can be used as hot sparesC. A pool of LUNs that can hold COFW dataD. A pool of LUNs that do not yet have a RAID
C. A pool of LUNs that can hold COFW data
A local replica of a database is required. Business requirements demand that the database be available 24X7. Which operation should be performed to ensure a consistent replica of the database?A. Hold I/O to the source devices immediately after the creatio
C. Hold I/Os to the source devices just before the creation of the replica
How many simultaneous operations can an eight disk RAID 5 set perform?A. 4 reads and 8 writesB. 4 reads or 8 writesC. 8 reads and 4 writesD. 8 reads or 4 writes
B. 4 reads or 8 writes
A company has two SAN islands approximately one mile apart. The company wants to create a single fabric over its public WAN connection. Which protocol is recommended to connect the sites?A. FCIPB. FCPC. iFCPD. iSCSI
A. FCIP
What is a primary concern when using Internal DAS?A. Bandwidth restrictionsB. Limited disk device supportC. Limited interconnect optionsD. Single points of failure
D. Single points of failure
What is a purpose of iSNS?A. To assist with discovery of iSCSI targetsB. To implement TCP offload for better bandwidthC. To translate EUI-format names into iQN-format namesD. To translate iQN-format names into EUI-format names
A. To assist with discovery of iSCSI targets
What is a primary concern when using Internal DAS?A. Bandwidth restrictionsB. Limited disk device supportC. Limited interconnect optionsD. Single points of failure
D. Single points of failure
What is a purpose of iSNS?A. To assist with discovery of iSCSI targetsB. To implement TCP offload for better bandwidthC. To translate EUI-Format names into iQN-format namesD. To translate iQN-format names into EUI-format names
A. To assist with discovery of iSCSI targets
What is a reason for implementing single HBA zoning?A. Decrease reset time for any change made in the state of the fabricB. Increase reset time for any change made in the state of the fabricC. Prevent host from seeing the same volumes via multiple HBAsD.
A. Decrease reset time for any change made in the state of the fabric
Which data access pattern will have its performance affected most by slow seek times?A. Random, large readsB. Random, small writesC. Sequential, large writesD. Sequential, small reads
B. Random, small writes
What is a disadvantage of array based remote replication?A. Cannot manage log shippingB. Limited to specific databasesC. Limited to specific operating systemsD. Uses host CPU resources
A. Cannot manage log shipping
Which task is an example of monitoring the utilization of a data center object?A. Determining which device ports have the highest rates of errorsB. Listing the number of disks in all storage arraysC. Monitoring the status of processes on the hostD. Viewin
D. Viewing a list of filesystems that are nearly full
When is data copied from the source to the target using Copy on First Access replica technology?A. A read issued for the first time to a location on the sourceB. A write issued for the first time to a location on the sourceC. All reads issued to a locatio
B. A write issued for the first time to a location on the source.
Which aspect of monitoring will allow you quickly respond to the failure of a Host Bus Adaptor (HBA)?A. CapacityB. HealthC. PerformanceD. Security
B. Health
Many FCAL nodes are attempting to simultaneously send I/O to a storage array. How is control of the loop determined?A. Hub by-pass circuitB. Hub name serviceC. Node that owns the tokenD. Node with highest priority
D. Node with highest priority
The Recovery Time Objective (RTO) of a company is 4 hours. Which statement below is true in the event of a disaster?A. Must be able to restart the network within 4 hours.B. Must be able to restart the servers within 4 hoursC. Must be able to resume produc
C. Must be able to resume production within 4 hours
Which feature differentiates an integrated NAS device from a NAS Gateway device?A. Allows external hosts access to storage devicesB. Manages storage devices via array softwareC. Manages storage devices via NAS softwareD. Utilizes external switch access to
C. Manages storage devices via NAS software
Data is being replicated from site A to site B using disk buffering to create extended distance consistent point in time copies every hour. In the event of a site failure at A, what is the maximum amount of data that will be missing at site B?A. 1 hourB.
B. 2 hours
A pointer based replica has been created and is being used for decision support. When is data copied from the source to the save location?A. All reads from a location on the targetB. All writes to a location on the targetC. First read from a location on t
D. First write to a location on the target
What are three advantages of a disk array compared with JBOD?A. Data protection, less expensive, multiple host I/O channelsB. Higher speed interconnects, data protection, multiple host I/O channelsC. Less expensive, single server connection, data protecti
B. Higher speed interconnects, data protection, multiple host I/O channels
What is a benefit of disk mirroring compared to a single disk?A. Improved read performanceB. Improved space utilizationC. Improved write performanceD. Lower cost
A. Improved read performance
Which Data Center infrastructure component does the Array receive read/write commands from?A. ApplicationB. DatabaseC. NetworkD. Server
D. Server
You need to consolidate a storage environment. The applications require high bandwidth and block level I/O. Which storage solution best meets these requirements?A. CASB. DASC. NASD. SAN
D. SAN
Which event is known as a head crash?A. A R/W head has touched the disk data areaB. A read head and a write head have touched each otherC. Two adjacent disk platters have touched each otherD. Two R/W heads have touched each other
A. A R/W head has touched the disk data area
What is a purpose of zoning?A. To isolate ISL traffic from host-to-storage trafficB. To isolate switch ports into separate logical SANsC. To logically connect array ports and host HBAsD. To logically connect LUNs on a storage array to different HBAs
C. To logically connect array ports and host HBAs
Which host component is the high speed interconnect between the Central Processing Unit and memory?A. BIOSB. BusC. NICD. Port
B. Bus
What are three requirements of storage systems?A. Availability, Capacity, ScalabilityB. Compliance, Capacity, ScalabilityC. Maintenance, Security, UtilizationD. Performance, Utilization, Data Integrity
A. Availability, Capacity, Scalability
What provides maximum data protection and availability on the back end of a storage array?A. Command queuing processesB. Dual controllersC. Multi-pathing softwareD. SCSI addressing
B. Dual controllers
Which remote replication solution has the lowest bandwidth requirement?A. Array based synchronous replicationB. Asynchronous ordered writesC. Host based LVM MirroringD. Log shipping over IP networks
D. Log shipping over IP networks
Which data center activity is responsible for maintaining an audit trail of configuration changes?A. AvailabilityB. Data ProtectionC. ManageabilityD. Security
D. Security
What are the four components of an intelligent storage system?A. Back-end, cache, front-end, physical disksB. Back-end, cache, switch, physical disksC. Back-end, disk cache, front-end, physical disksD. Back-end, disk cache, front-end, logical disks
A. Back-end, cache, front-end, physical disks
A Copy on First Access replica has been created. The source devices are being used for production operations. When is data copied from the source to the target?A. A read issued for the first time from a location on the sourceB. A read or write issued for
C. All write issued for the first time to a location on the source.
How is the Content Address derived in CAS?A. From a combination of the data and the metadata of the objectB. From the contents of the objectC. From the creation of time and anticipated retention time of the objectD. From the size, in bytes, of the object
B. From the contents of the object
Which statement describes the iFCP protocol?A. IP-based gateway-to-gateway protocol that can be used for SAN extensionB. IP-based protocol that is required to present block storage from a NAS applianceC. IP-based protocol that is required to present FC ta
A. IP-based gateway-to-gateway protocol that can be used for SAN extension
A disk drive has a rotational speed of 100 revolutions per second. What is the average rotational latency?A. 3 msB. 5 msC. 10 msD. 15 ms
B. 5 ms
Which SAN topology allows IP initiators to communicate with FC targets?A. BridgedB. ConsolidatedC. HybridD. Native
A. Bridged
What is a disadvantage of multi-mode fiber relative to single-mode fiber?A. Cabling complexityB. Limited distanceC. Limited to half-duplexD. Substantially higher cost
B. Limited distances
What do you monitor as part of a SAN health check?A. Disk statusB. Fan-in/Fan-out ratioC. ISL utilizationD. Port status change
D. Port status change
What happens when the EMC/TimeFinder Mirror Restore operation is performed?A. All data from Standard Volume is copied to the BCVB. All data from the BCV is copied to the Standard VolumeC. BCV is made independently accessibleD. Data is copied incrementally
B. All data from the BCV is copied to the Standard Volume
What is the role of a bus?A. Control point for all host activities and resourcesB. Device for storing dataC. High speed interconnect among CPU, memory, and disksD. Temporary location for commands and data
C. High speed interconnect among CPU, memory, and disks
What best defines NAS?A. General purpose server for content addressed dataB. General purpose server for file level accessC. Specialized server for content addressed dataD. Specialized server for file level data access
D. Specialized server for file level data access
Which type of front-end port is found on an intelligent storage system used in a SAN?A. ATAB. EIDEC. FCD. SCSI
C. FC
Which statement describes the choice of cylinders used in a partition?A. Cylinders must be contiguous and from different zonesB. Cylinders must be contiguous and may be in the same zoneC. Cylinders must be non-contiguous and from different zonesD. Cylinde
B. Cylinders must be contiguous and may be in the same zone
What is a valid member of a zone in a SAN?A. A Domain IDB. A HBA WWPNC. The IP address of a hostD. The serial number of a storage array
B. The HBA WWPN
What is a benefit of a NAS solution?A. Allows host to access data directly from storage arrayB. Allows the customer to directly connect to the storage arrayC. Centralizes storage and simplifies the managementD. Improves network bandwidth
C. Centralizes storage and simplifies the management
An application uses a file system. A local replica of the application is required. Business requirements demand that the application be available on a 24X7 basis. Which operation should be performed for a consistent file system replica?A. Flush file syste
B. Flush file system buffers before the creation of the replica
What is a role of the backup client in a backup and recovery environment?A. Gather data for backupB. Maintain the backup catalogC. Retrieve metadata from the storage nodeD. Write the data set to the backup device
A. Gather data for backup
What is a disadvantage of JBOD versus disk arrays?A. Access is slowB. Data is unprotectedC. Disks cannot be independently addressed by the serverD. Storage capacity is lower
B. Data is unprotected
What are the five core elements of the data center infrastructure?A. Applications, Databases, JBOD, Networks, Storage ArraysB. Applications, Databases, Servers/Operating Systems, DAS, NASC. Applications, Databases, Servers/Operating Systems, Networks, Sto
C. Applications, Databases, Servers/Operating Systems, Networks, Storage Arrays
What does partitioning do to a physical disk?A. Concatenates the disk together with other disksB. Divides a disk into logical containersC. Mirrors the diskD. Presents the disk as one logical volume
B. Divides a disk into logical containers
If site A is 1000 miles (1600 km) away from site B, which method is NOT suitable for remotely replicating data from A to B?A. AsynchronousB. Extended distance consistent PITC. Log shippingD. Synchronous
D. Synchronous
During EMC CLARiiON MirrorView/A remote replication, the communication link between a mirror’s primary image and its secondary image fails. What is the state of the secondary image?A. FracturedB. InconsistentC. IndependentD. Synchronizing
A. Fractured
Which component of EMC ControlCenter collects information about Managed Objects?A. AgentB. RepositoryC. ServerD. Store
A. Agent
What describes External DAS?A. Array provided device managementB. Array provided global access volumesC. Host provided content addressed objectsD. Host provided data addressing
A. Array provided device management
Which EMC product family allows management and configuration of Fibre Channel switched fabrics?A. CeleraB. CenteraC. CLARiiOND. Connectrix
D. Connectrix
Which sequence of activities describes a read cache hit?1. Read data is sent to the host2. Host sends read request to storage system3. Cache is searched, and data is foundA. 1, 2, 3B. 1, 3, 2C. 2, 3, 1D. 3, 1, 2
C. 2,3,1
Which statement applies to Internal DAS?A. Internally deployed parallel encapsulated protocol storageB. Internally deployed parallel protocol storageC. Internally deployed serial encapsulated protocol storageD. Internally deployed Transmission Control Pro
B. Internally deployed parallel protocol storage
Which task is an example of monitoring the performance of a data center object?A. Creating a list of filesystems that are under utilizedB. Examining the operational status of a device portC. Graphing the rates of user login failures per dayD. Viewing rate
D. Viewing rates of data transmission of all disks
What distinguishes a FC director from a FC switch?A. Dual-redundant power suppliesB. Greater connectivity capacityC. More options for SAN management softwareD. Support for both LC and SC optical connectors
B. Greater connectivity capacity
An application uses ten 10 GB Devices. A pointer based replica of the application is required. The replica will be kept for 24 hours. The data changes by 20% every 24 hours. How much storage should be allocated for the replication?A. 2 GbB. 10 GBC. 20 GBD
C. 20 GB
What is the correct order of operations for array based synchronous replication?1. Write is received by the source array from host/server2. Remote array sends acknowledgement to the source array3. Source array signals write complete to host/server4. Write
B. 1, 4, 2, 3
What does the number of files to be backed up affect in a backup and recovery environment?A. Amount of mediaB. Catalog sizeC. Media typeD. Number of tape libraries
B. Catalog size
What is stored in tag RAM?A. Data written by the host but not yet saved to diskB. Flags that indicate whether or not data is duplicated in cacheC. Pointers to the location of data in cache and on diskD. Read-ahead data fetched by the storage array
C. Pointers to the location of data in cache and on disk
Which disk drive component is responsible for positioning the R/W heads?A. Actuator arm assemblyB. R/W head controllerC. R/W interfaceD. Radial arm assembly
A. Actuator arm assembly
Which feature can mult-pathing software provide?A. Load balancingB. LUN maskingC. Port zoningD. Write coalescing
A. Load balancing
What is a benefit of tracking changes to the source and target devices after a point in time replica is created?A. Reduces the Recovery Point Objective for restart operations from the targetB. Reduces the Recovery Time Objective for restart operations fro
D. Speeds up the re-synchronization of the source and target
What channel is valid for connecting storage arrays directly to IP networks for remote replication?A. ESCONB. FCC. Gigbit EthernetD. SCSI
C. Gigbit Ethernet
What is the size of the unique Content Address when the CAS stores a data object?A. 16 bitB. 32 bitC. 64 bitD. 128 bit
D. 128 bit
What is CIM?A. A block-level disk drive I/O protocolB. A language and methodology for describing management dataC. A measure of the rotational speed of a disk driveD. A standard for file share modeling, visualization, and management
B. A language and methodology for describing management data
The Recovery Point Objective (RPO) of a company is 2 hours. Which statement is true in the event of a disaster?A. No more than 2 hours of production data can be lost.B. No more than 4 hours of production data can be lost.C. Time to resume production opera
A. No more than 2 hours of production data can be lost.
Which SAN management feature prevents unauthorized or accidental access to volumes?A. Fibre Channel Persistent IDB. LUN MaskingC. Secure Fabric OSD. Single HBA Zoning
B. Lun masking
Which requirement is a reason for deploying NAS?A. Array managed data securityB. Content addressed storageC. Global access to dataD. Host managed storage volumes
C. Global access to data
What is a server capacity management task?A. Establishing user quotasB. Installing multi-path softwareC. Maintaining user loginsD. Monitoring faults and events
A. Establishing user quotas
You want to ensure that your storage solution can grow with your business. Which requirement of storage systems applies to this goal?A. AvailabilityB. ManageabilityC. PerformanceD. Scalability
D. Scalability
You are planning for disaster recovery of your backup and recovery environment. Which backup server component must be included?A. CatalogB. Device configurationC. Log filesD. Reports
A. Catalog
Which component in an EMC Symmetrix Array handles physical disk I/O operations?A. Back-end adaptorB. CacheC. Front-end adaptorD. Storage Processor
A. Back-end adaptor
A Celerra system is servicing NAS clients over two Data Movers that are configured Primary/Primary. The Control Station fails. How does this failure impact data access?A. Temporary loss of data access, since both Data Movers must rebootB. Temporary loss o
C. There is no impact
What is an advantage of RAID 5 relative to RAID 1?A. Faster rebuild times after failureB. Higher availabilityC. Improved space utilizationD. Improved write performance
C. Improved space utilization
Which statement is true of parity-based RAID?A. Parity is read each time a read is performedB. Parity is read only when a full stripe is readC. Parity is updated each time a write is performedD. Parity is updated when writes fill a stripe
C. Parity is updated each time a write is performed
During DR planning in a two data center setup you determine that: The remote site B will hold a copy of data that is 5 minutes behind the production to site B. An additional 3 hours will be needed to power up the servers, bring up the network and redirect
A. Five minutes
Which network technology uses time division multiplexing for sending data from multiple subscribers as an optical signal?A. DWDMB. Gigabit EthernetC. SONETD. T3
C. SONET
What are the physical ports that interconnect two FC switches referred to as?A. E_PortsB. F_PortsC. G_PortsD. N_Ports
A. E_Ports
In which management task would you collect and analyze ISL traffic metrics?A. AvailabiltyB. Health C. PerformanceD. Security
C. Performance
When is data copied from the source to the save location in pointer based replica technology?A. All writes to a location on the sourceB. All writes to a location on the targetC. First read from a location on the targetD. First write to a location on the s
D. First write to a location on the source
Which statement describes the iSCSI protocol?A. ATA over SCSIB. IP over SCSIC. SCSI over ATAD. SCSI over IP
D. SCSI over IP
What is a concern of NAS management?A. Configuring the system to meet application performance requirementsB. Configuring the system to meet limited interconnectivity optionsC. Managing the systems to integrate multiple block level access ports to the NAS
A. Configuring the system to meet application performance requirements
You must create a chargeback system for cost recovery in the IT department. Which activity supports this goal?A. Capacity planningB. MonitoringC. ProvisioningD. Reporting
D. Reporting
What is a logical component of a storage environment?A. BusB. DiskC. FilesystemD. Memory
C. Filesystem
What is a logical component of a storage environment?A. BusB. DiskC. FilesystemD. Memory
C. Filesystem
Which aspect of monitoring will allow you to prevent a file system from running out of space?A. Array CapacityB. Array HealthC. Server CapacityD. Server Health
C. Server Capacity
Which Connectrix switches can be managed using WebToolsA. B-seriesB. CX-SeriesC. M-SeriesD. MDS-Series
A. B-Series
What does a Domain ID identify?A. A management server within a fabricB. A primary server within a fabricC. A storage array within a fabricD. A switch within a fabric
D. A switch within a fabric
Which service is used by iSCSI initiators to discover targets?A. DNSB. iSNSC. NISD. WINS
B. iSNS
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