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ISM 4 tests Quiz on ISM 40-80, created by Damo Cza on 11/07/2017.

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ISM 40-80

Question 1 of 41

1

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?

Select one of the following:

  • 2800

  • 5600

  • 11200

  • 8400

Explanation

Question 2 of 41

1

What is an accurate statement about a software RAID implementation?

Select one of the following:

  • 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

Explanation

Question 3 of 41

1

What is an accurate statement about a hardware RAID implementation?

Select one of the following:

  • 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

Explanation

Question 4 of 41

1

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?

Select one of the following:

  • Thin

  • Traditional

  • Journal

  • Bitmap

Explanation

Question 5 of 41

1

Which LUN expansion technique provides both capacity expansion and performance improvement?

Select one of the following:

  • Virtual metaLUN

  • Concatenated metaLUN

  • Striped metaLUN

  • Partitioned metaLUN

Explanation

Question 6 of 41

1

What provides the ability to automatically relocate extents across physical storage drives over the entire pool when new drives are added to the pool?

Select one of the following:

  • Storage pool tiering

  • Storage pool rebalancing

  • Extent relocation

  • Automated extent tiering

Explanation

Question 7 of 41

1

What is a benefit of implementing the server flash caching technology in a storage environment?

Select one of the following:

  • 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

Explanation

Question 8 of 41

1

Which technique protects the data in cache from power failures?

Select one of the following:

  • Mirroring

  • Cache tiering

  • Vaulting

  • Idle flushing

Explanation

Question 9 of 41

1

Which EMC block-based storage system uses a cluster design to scale both capacity and performance?

Select one of the following:

  • Isilon

  • XtremSF

  • ScaleIO

  • XtremIO

Explanation

Question 10 of 41

1

To improve performance, which EMC product allows a PCIe flash card to be deployed in a compute system?

Select one of the following:

  • XtremIO

  • ScaleIO

  • XtremCache

  • XtremSF

Explanation

Question 11 of 41

1

Which NAS implementation requires separate management of the NAS head and the storage?

Select one of the following:

  • Scale-out

  • Gateway

  • Integrated

  • Unified

Explanation

Question 12 of 41

1

Which operation is performed by a scale-out NAS cluster when clients send data to the cluster?

Select one of the following:

  • 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

Explanation

Question 13 of 41

1

What is an accurate statement about the Network File System (NFS) protocol?

Select one of the following:

  • 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

Explanation

Question 14 of 41

1

What is an accurate statement about the Common Internet File System (CIFS) protocol?

Select one of the following:

  • 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

Explanation

Question 15 of 41

1

What is an accurate statement about an integrated NAS controller?

Select one of the following:

  • 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

Explanation

Question 16 of 41

1

What accurately describes the function of the policy engine in a file-level storage tiering environment?

Select one of the following:

  • 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

Explanation

Question 17 of 41

1

Which process uses a file-level storage tiering technique to perform policy-based data movement?

Select one of the following:

  • Backup

  • Replication

  • Deduplication

  • Archiving

Explanation

Question 18 of 41

1

Which elements are associated with an object in an object-based storage system?

Select one of the following:

  • 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

Explanation

Question 19 of 41

1

Which EMC product is a hyper-scale storage infrastructure that provides universal accessibility with support for object and HDFS?

Select one of the following:

  • XtremIO

  • Data Domain

  • ECS Appliance

  • Centera

Explanation

Question 20 of 41

1

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?

Select one of the following:

  • 12

  • 9

  • 6

  • 3

Explanation

Question 21 of 41

1

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?

Select one of the following:

  • 4

  • 6

  • 10

  • 14

Explanation

Question 22 of 41

1

Which feature of an object-based storage system abstracts and provides a common view of storage independent of location to applications?

Select one of the following:

  • Flexible data access

  • Multi-tenancy

  • Global namespace

  • Scale-out architecture

Explanation

Question 23 of 41

1

What is an advantage of a software-based object storage implementation?

Select one of the following:

  • 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

Explanation

Question 24 of 41

1

Which EMC product provides a software-defined platform that supports both block and file storage services?

Select one of the following:

  • ScaleIO

  • ViPR Controller

  • Elastic Cloud Storage

  • XtremIO

Explanation

Question 25 of 41

1

Which EMC product provides a software-defined storage platform that supports object storage services?

Select one of the following:

  • Elastic Cloud Storage

  • ScaleIO

  • ViPR Controller

  • XtremIO

Explanation

Question 26 of 41

1

Which EMC product provides a software-defined storage platform to create a compute-based storage area network?

Select one of the following:

  • ScaleIO

  • Isilon

  • XtremIO

  • Atmos

Explanation

Question 27 of 41

1

Which component of a software-defined storage (SDS) environment manages and provisions storage?

Select one of the following:

  • REST API

  • SDS controller

  • SDS web service

  • Storage agent

Explanation

Question 28 of 41

1

Which component of a software-defined storage (SDS) environment enables integration with external monitoring tools?

Select one of the following:

  • SDS web service

  • REST API

  • Metadata service

  • Storage agent

Explanation

Question 29 of 41

1

What is a function of the metadata manager in a compute-based storage area network (SAN)?

Select one of the following:

  • 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

Explanation

Question 30 of 41

1

Which global addressing does the REST application programming interface use for the discovery of a storage service?

Select one of the following:

  • Namespace

  • Uniform Resource Identifier

  • Extensible Markup Language

  • Controller-provided MAC address

Explanation

Question 31 of 41

1

What is a benefit of link aggregation in a SAN?

Select one of the following:

  • 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

Explanation

Question 32 of 41

1

What accurately describes link aggregation in a SAN?

Select one of the following:

  • 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

Explanation

Question 33 of 41

1

What is a benefit of a storage area network (SAN)?

Select one of the following:

  • 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

Explanation

Question 34 of 41

1

What is a characteristic of software-defined networking?

Select one of the following:

  • 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

Explanation

Question 35 of 41

1

What is a function of the FC-1 layer of the Fibre Channel (FC) protocol stack?

Select one of the following:

  • Provides FC addressing

  • Defines data encoding

  • Maps upper layer protocols to FC layers

  • Defines the physical interface

Explanation

Question 36 of 41

1

What keeps the name server up-to-date on all switches in a fabric?

Select one of the following:

  • Management server

  • Zoning

  • SW-RSCN

  • FLOGI

Explanation

Question 37 of 41

1

Which data structure enables two node ports to identify and manage a set of information units in a Fibre Channel (FC) SAN?

Select one of the following:

  • Domain

  • Sequence

  • Frame

  • Exchange

Explanation

Question 38 of 41

1

What is a benefit of block-level storage virtualization?

Select one of the following:

  • 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

Explanation

Question 39 of 41

1

Which fabric service distributes SW-RSCNs to the other switches in a Fibre Channel SAN?

Select one of the following:

  • Fabric controller

  • Fabric login server

  • Fabric management server

  • Name server

Explanation

Question 40 of 41

1

What accurately describes a VSAN?

Select one of the following:

  • 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

Explanation

Question 41 of 41

1

What maps the logical path of a file system to its physical path in a file-level virtualization
implementation?

Select one of the following:

  • Remote procedure call

  • Global namespace

  • Distributed file system

  • Cache coherency

Explanation

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