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ISM 40-80

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ISM 4 tests Quiz on ISM 40-80, created by Damo Cza on 11/07/2017.
Damo Cza
Quiz by Damo Cza, updated more than 1 year ago
Damo Cza
Created by Damo Cza almost 7 years ago
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Resource summary

Question 1

Question
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?
Answer
  • 2800
  • 5600
  • 11200
  • 8400

Question 2

Question
What is an accurate statement about a software RAID implementation?
Answer
  • Supports the upgrade of RAID software on incompatible O/S
  • Uses CPU cycles of a compute system to perform RAID calculation
  • Uses a specialized hardware controller to perform RAID calculation
  • Supports all RAID levels

Question 3

Question
What is an accurate statement about a hardware RAID implementation?
Answer
  • Uses CPU cycles of a compute system to perform RAID calculations
  • Uses a specialized hardware controller installed on a storage array
  • Offers a low-cost solution for providing disk protection
  • Requires a RAID controllerand operating system to be compatible

Question 4

Question
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?
Answer
  • Thin
  • Traditional
  • Journal
  • Bitmap

Question 5

Question
Which LUN expansion technique provides both capacity expansion and performance improvement?
Answer
  • Virtual metaLUN
  • Concatenated metaLUN
  • Striped metaLUN
  • Partitioned metaLUN

Question 6

Question
What provides the ability to automatically relocate extents across physical storage drives over the entire pool when new drives are added to the pool?
Answer
  • Storage pool tiering
  • Storage pool rebalancing
  • Extent relocation
  • Automated extent tiering

Question 7

Question
What is a benefit of implementing the server flash caching technology in a storage environment?
Answer
  • Improves the network performance during peak workloads
  • Eliminates the need for cache on a storage system
  • Reduces the number of storage systems in a data center
  • Provides performance acceleration for read intensive workloads

Question 8

Question
Which technique protects the data in cache from power failures?
Answer
  • Mirroring
  • Cache tiering
  • Vaulting
  • Idle flushing

Question 9

Question
Which EMC block-based storage system uses a cluster design to scale both capacity and performance?
Answer
  • Isilon
  • XtremSF
  • ScaleIO
  • XtremIO

Question 10

Question
To improve performance, which EMC product allows a PCIe flash card to be deployed in a compute system?
Answer
  • XtremIO
  • ScaleIO
  • XtremCache
  • XtremSF

Question 11

Question
Which NAS implementation requires separate management of the NAS head and the storage?
Answer
  • Scale-out
  • Gateway
  • Integrated
  • Unified

Question 12

Question
Which operation is performed by a scale-out NAS cluster when clients send data to the cluster?
Answer
  • Data is consolidated into a block and then stored on the NAS head
  • Data is divided and stored on multiple nodes in parallel
  • NAS file system and cluster grow dynamically to store the data
  • Data is evenly distributed to every file system in the cluster

Question 13

Question
What is an accurate statement about the Network File System (NFS) protocol?
Answer
  • Provides a set of remote procedure calls to access a remote file system
  • Uses the server message block protocol to provide file locking capability
  • Translates block I/O requests from a file system into object-level requests
  • Automatically scales the file systems on clients as the workload increases

Question 14

Question
What is an accurate statement about the Common Internet File System (CIFS) protocol?
Answer
  • Uses a Remote Procedure Call mechanism to provide access to the CIFS supported file systems
  • Contains an open variation of the stateless user datagram protocol that stores information about open files
  • Uses file system locking to enable users to simultaneously overwrite all metadata of a file system
  • Enables a CIFS server to maintain connection information regarding every connected client

Question 15

Question
What is an accurate statement about an integrated NAS controller?
Answer
  • Stripes data across multiple NAS systems for data protection
  • Contains a specialized operating system dedicated to file serving
  • Abstracts and pools NAS controllers across multiple NAS systems
  • Contains an FC Forwarder that is optimized for file sharing functions

Question 16

Question
What accurately describes the function of the policy engine in a file-level storage tiering environment?
Answer
  • Creates a stub file in secondary storage pointing to data on the primary storage
  • Runs the backup agent and determines the files to be copied to the secondary storage
  • Facilitates moving data from primary storage to secondary storage based on pre-defined policies
  • Ensures that primary and secondary storage have identical data for compliance

Question 17

Question
Which process uses a file-level storage tiering technique to perform policy-based data movement?
Answer
  • Backup
  • Replication
  • Deduplication
  • Archiving

Question 18

Question
Which elements are associated with an object in an object-based storage system?
Answer
  • Data, metadata, object ID, and attributes
  • Metadata, object ID, attributes, and file path
  • LUN ID, data, metadata, and object ID
  • Object ID, attributes, LUN ID, and file path

Question 19

Question
Which EMC product is a hyper-scale storage infrastructure that provides universal accessibility with support for object and HDFS?
Answer
  • XtremIO
  • Data Domain
  • ECS Appliance
  • Centera

Question 20

Question
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?
Answer
  • 12
  • 9
  • 6
  • 3

Question 21

Question
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?
Answer
  • 4
  • 6
  • 10
  • 14

Question 22

Question
Which feature of an object-based storage system abstracts and provides a common view of storage independent of location to applications?
Answer
  • Flexible data access
  • Multi-tenancy
  • Global namespace
  • Scale-out architecture

Question 23

Question
What is an advantage of a software-based object storage implementation?
Answer
  • Requires less storage capacity to store a large number of objects
  • Provides the flexibility to reuse the existing infrastructure
  • Provides the flexibility to create more than one object ID for an object
  • Requires less hardware to support scalable architecture

Question 24

Question
Which EMC product provides a software-defined platform that supports both block and file storage services?
Answer
  • ScaleIO
  • ViPR Controller
  • Elastic Cloud Storage
  • XtremIO

Question 25

Question
Which EMC product provides a software-defined storage platform that supports object storage services?
Answer
  • Elastic Cloud Storage
  • ScaleIO
  • ViPR Controller
  • XtremIO

Question 26

Question
Which EMC product provides a software-defined storage platform to create a compute-based storage area network?
Answer
  • ScaleIO
  • Isilon
  • XtremIO
  • Atmos

Question 27

Question
Which component of a software-defined storage (SDS) environment manages and provisions storage?
Answer
  • REST API
  • SDS controller
  • SDS web service
  • Storage agent

Question 28

Question
Which component of a software-defined storage (SDS) environment enables integration with external monitoring tools?
Answer
  • SDS web service
  • REST API
  • Metadata service
  • Storage agent

Question 29

Question
What is a function of the metadata manager in a compute-based storage area network (SAN)?
Answer
  • Performs the I/O operations on the local storage of a compute system as requested by a client
  • Controls all data read and write operations in a compute-based SAN
  • Provides an interface to the software-defined storage controller
  • Controls load balancing and data migration in a compute-based SAN

Question 30

Question
Which global addressing does the REST application programming interface use for the discovery of a storage service?
Answer
  • Namespace
  • Uniform Resource Identifier
  • Extensible Markup Language
  • Controller-provided MAC address

Question 31

Question
What is a benefit of link aggregation in a SAN?
Answer
  • Distributes the network traffic across all virtual SANs, ensuring even virtual SAN utilization
  • Optimizes performance by consolidating all inter-switch links into a single physical link
  • Provides a higher throughput than a single inter-switch link can provide
  • Provides the flexibility to deploy the same inter-switch links for both FC and iSCSI traffic

Question 32

Question
What accurately describes link aggregation in a SAN?
Answer
  • Combines two or more parallel inter-switch links into a single logical inter-switch link
  • Consolidates compute-to-compute traffic and storage traffic into a single inter-switch link
  • Replaces multiple parallel inter-switch links by a single physical inter-switch link
  • Aggregates the data transmission rate of all HBA and storage system port pairs

Question 33

Question
What is a benefit of a storage area network (SAN)?
Answer
  • Ensures secure data transmission using only channel technologies
  • Ensures high response times without the protocol overhead
  • Enables consolidation of control and data planes in a single system
  • Enables compute systems across locations to access shared storage

Question 34

Question
What is a characteristic of software-defined networking?
Answer
  • Abstracts and separates the control plane from the data plane
  • Controller in network switches takes over data plane functions
  • Data plane sends instructions to the control plane to handle network traffic
  • External software combines both data plane and control plane functions

Question 35

Question
What is a function of the FC-1 layer of the Fibre Channel (FC) protocol stack?
Answer
  • Provides FC addressing
  • Defines data encoding
  • Maps upper layer protocols to FC layers
  • Defines the physical interface

Question 36

Question
What keeps the name server up-to-date on all switches in a fabric?
Answer
  • Management server
  • Zoning
  • SW-RSCN
  • FLOGI

Question 37

Question
Which data structure enables two node ports to identify and manage a set of information units in a Fibre Channel (FC) SAN?
Answer
  • Domain
  • Sequence
  • Frame
  • Exchange

Question 38

Question
What is a benefit of block-level storage virtualization?
Answer
  • Enhances performance by limiting the RSCN traffic
  • Enables the online expansion of virtual volumes
  • Improves security through logical segmentation of block storage devices
  • Increases scalability through separation of FC addresses across VSANs

Question 39

Question
Which fabric service distributes SW-RSCNs to the other switches in a Fibre Channel SAN?
Answer
  • Fabric controller
  • Fabric login server
  • Fabric management server
  • Name server

Question 40

Question
What accurately describes a VSAN?
Answer
  • 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
  • A logical fabric across FC SANs that allows non-disruptive file mobility between the SANs

Question 41

Question
What maps the logical path of a file system to its physical path in a file-level virtualization implementation?
Answer
  • Remote procedure call
  • Global namespace
  • Distributed file system
  • Cache coherency
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