EMC Exam E05-001
Information Storage and Management Version 3 Exam
[Total Questions：171]
- Which EMC product provides automated monitoring and reporting of a software-defined storage infrastructure?
哪种EMC产品可提供对软件定义的存储基础架构的自动监视和报告？
ANSWER：ViPR SRM 软件定义的存储平台 - What is an accurate statement about a virtual tape library?
关于虚拟磁带库的准确陈述是什么？
ANSWER：Legacy backup software can be used without additional modules or changes
可以使用旧版备份软件，而无需其他模块或更改 - Which VMware product provides a network virtualization platform for a software-defined data center?
哪种VMware产品为软件定义的数据中心提供了网络虚拟化平台？
ANSWER：NSX VMware NSX-网络虚拟化平台 - What is a function of a Fibre Channel Forwarder in an FCoE SAN?
FCoE SAN中的光纤通道转发器有什么功能？
ANSWER：Applies zoning configurations and provides fabric services
应用分区配置并提供光纤服务
Functions as the communication bridge between CEE and FC networks, also handles FCoE login requests, applies zoning, and provides fabric services, as well as encapsulation and decapsulation FC frames. So the answer is Apply Zoning.
功能作为 CEE 和 FC 网络之间的通信桥，还处理 FCoE 登录请求、应用分区、提供交换矩阵服务以及封装和解封 FC 帧。因此，答案是应用分区。 - How do VSANs ensure security in an IT infrastructure?
VSAN如何确保IT基础架构的安全性？
ANSWER：By providing isolation over a shared infrastructure
通过在共享基础架构上提供隔离 - What is a benefit of N_Port virtualization (NPV)?
N_Port虚拟化（NPV）有什么好处？
ANSWER：Reduces the number of domain IDs in a fabric
减少光纤结构中的域ID数量
N_Port virtualization (NPV)
addresses this concern by reducing the number of domain IDs in a fabric. Edge switches supporting NPV do not require a domain ID. They pass traffic between the core switch and the compute systems.
N_Port虚拟化 （NPV）
通过减少结构中的域 IP 数来解决这一问题。边缘开关支持的净现值不需要域 ID。它们在核心交换机和
计算系统。 - Which data center management process involves collating and presenting the utilization of resources?
哪个数据中心管理过程涉及整理和介绍资源利用情况？
ANSWER：Reporting 报告 - What is a benefit of link aggregation in a SAN?
SAN中的链路聚合有什么好处？
ANSWER：Provides a higher throughput than a single interswitch link can provide
提供比单个交换机间链路可以提供的吞吐量更高的吞吐量 - Which capability is provided by a software-defined storage controller?
软件定义的存储控制器提供哪些功能？
ANSWER：Ability to pool and abstract physical storage and presentit as an open storage platform
能够汇总和抽象物理存储并将其呈现为开放存储平台的能力 - What is an accurate statement about a hardware RAID implementation?
关于硬件RAID实施的准确说法是什么？
ANSWER：Uses a specialized hardware controller installed on a storage array
使用安装在存储阵列上的专用硬件控制器 - What is an accurate statement about OpenID control?
关于OpenID控件的准确说法是什么？
ANSWER：Enables an organization to use authentication services from an identity provider
使组织能够使用来自身份提供者的身份验证服务 - What is an accurate statement about Infrastructure as a Service?
关于基础架构即服务的准确陈述是什么？
ANSWER：Consumer has control over the operating systems and the deployed applications
消费者可以控制操作系统和已部署的应用程序 - What is a benefit of implementing the server flash caching technology in a storage environment?
在存储环境中实施服务器闪存缓存技术有什么好处？
ANSWER：Provides performance acceleration for read intensive workloads
为读取密集型工作负载提供性能加速 - What determines how far back the recovery points can go in a continuous data protection (CDP) solution?
什么决定了连续数据保护（CDP）解决方案中恢复点可以走多远？
ANSWER：Amount of space that is configured for the journal
为日记配置的空间量 - Which capability does big data analytics provide?
大数据分析提供哪些功能？
ANSWER：Enabling data-driven decisions from large volumes of data
从大量数据中执行以数据为依据的决策 - Which EMC product is a hyper-scale storage infrastructure that provides universal accessibility with support for object and HDFS?
哪种EMC产品是超大规模存储基础架构，可提供对对象和HDFS的支持的通用访问性？
ANSWER：ECS Appliance - Dell EMC Elastic Cloud Storage (ECS) 应用装置是一种多用途、软件定义的云存储平台
B、XtremIO 一款集成了全闪存介质的可扩展企业级存储阵列。它的设计初衷就是为应用带来更好的性能体验。
C、Data Domain 备份存储
D、Centera 数据归档系统
ECS Appliance provides a hyper-scale storage infrastructure that is specifically designed to support modern applications with unparalleled availability, protection, simplicity, and cale. It provides universal accessibility with support for object, and HDFS. ECS Appliance enables cloud service providers to deliver competitive cloud storage services at scale. ECS provides a single platform for all web, mobile, Big Data, and social media applications.
ECS 设备提供超大规模存储基础架构，专为支持具有无与伦比的可用性、保护、简单性和简单性的现代应用程序而设计。它提供通用可访问性，支持对象和 HDFS。ECS 设备使云服务提供商能够大规模提供具有竞争力的云存储服务。ECS 为所有 Web、移动、大数据和社交媒体应用程序提供单一平台。 - Which type of Fibre Channel (FC) ports do the labels "X" and "Y" represent in the exhibit?
ANSWER：X is an F_Port and Y is an N_Port
N端口：Node Port节点端口；节点连接点；光纤通道通信的终端
F端口：Fabric Port 光纤端口；一种交换连接端口，也就是两个N端口连接的"中间端口" - Which component of a software-defined storage (SDS) environment enables integration with external monitoring tools?
软件定义存储（SDS）环境的哪个组件可以与外部监视工具集成？
ANSWER：REST API - What accurately describes the flow control mechanism in an FC SAN?
什么能准确描述FC SAN中的流控制机制？
ANSWER：Both transmitting and receiving ports agree on the number of buffers available during port login
发送端口和接收端口都同意在端口登录期间可用的缓冲区数量 - What enables an administrator to create device groups in an IP-SAN for restricting device communications to a group?
什么使管理员能够在IP-SAN中创建设备组以将设备通信限制到组？
ANSWER：iSNS discovery domain iSNS发现域
iSNS((Internet Storage Name Service,因特网储存名称服务) - What is the purpose of monitoring capacity in a storage infrastructure?
监视存储基础架构中的容量的目的是什么？
ANSWER：Tracking the amount of storage infrastructure resources used and available
跟踪已使用和可用的存储基础架构资源的数量 - What is a benefit of a storage area network (SAN)?
存储区域网络（SAN）有什么好处？
ANSWER：Enables compute systems across locations to access shared storage
使跨位置的计算系统能够访问共享存储 - What is an accurate statement about a virtual desktop infrastructure?
关于虚拟桌面基础架构的准确说法是什么？
ANSWER：Each user is provided a dedicated desktop VM with its own operating system and applications
为每个用户提供了一个专用的桌面VM，该VM具有自己的操作系统和应用程序 - An organization plans to deploy a new backup device in their data center. The organization wants the new backup device to support their legacy backup software without requiring any changes to the software. In addition, the organization wants the backup device to provide random data access for better performance.
Which backup device should be recommended?
组织计划在其数据中心中部署新的备份设备。 组织希望新的备份设备支持其旧式备份软件，而不需要对该软件进行任何更改。 另外，组织希望备份设备提供随机数据访问以提高性能。
应该推荐哪个备份设备？
ANSWER：Virtual tape library 虚拟磁带库 - In an FC SAN environment, which security mechanism prevents a switch port from being enabled even after a switch reboot?
在FC SAN环境中，即使在交换机重启后，哪种安全机制仍会阻止启用交换机端口？
ANSWER：Port locking 端口锁定
通过交换机端口锁定功能，可以限制未知、不受信任或可能存有敌意的VM假装拥有未分配给它们的MAC或IP地址的能力，从而控制从这些VM发送的流量。可以使用端口锁定命令，在默认情况下阻止网络上的所有流量，也可以定义特定IP地址，以便允许个别VM从中发送流量。 - What is an accurate statement about hypervisor-based continuous data protection (CDP)?
关于基于管理程序的连续数据保护（CDP）的准确说法是什么？
ANSWER：Write splitter is embedded in the hypervisor
写入拆分器嵌入在管理程序中 - In continuous data protection (CDP) remote replication, where are the two split write I/Os of an incoming write I/O directed?
在连续数据保护 （CDP） 远程复制中，传入写入 I/O 的两个拆分写入 I/O 指示在哪里？
ANSWER：One I/O goes to the local CDP appliance and the other I/O goes to the production volume
一个 I/O 转到本地 CDP 设备，另一个 I/O 转到生产卷 - Which EMC product provides a remote replication solution for EMC VMAX3 storage systems?
哪种 EMC 产品为 EMC VMAX3 存储系统提供了远程复制解决方案？
ANSWER：SRDF 远程镜像软件 Symmetrix Remote Data Facility
建立物理上独立的两个Symmetrix系统之间完全的、实时的数据镜像，而两者距离可以是近在咫尺或相距千里之遥。
B、SnapSure 一种用于创建和管理文件快照的软件功能
C、MirrorView 盘阵之间做LUN镜像的,支持同步和异步
D、ProtectPoint 可让应用程序所有者在不影响其应用程序性能的情况下,全面掌控数据保护,从而获得不折不扣的高效数据保护。 - Which EMC block-based storage system uses a cluster design to scale both capacity and performance?
哪个基于 EMC 块的存储系统使用群集设计来扩展容量和性能？
ANSWER：XtremIO XEMC的XtremIO是一款集成了全闪存介质的可扩展企业级存储阵列。
B、Isilon
C、XtremSF
D、ScaleIO - What is determined by the recovery point objective in a business continuity solution?
业务连续性解决方案中的恢复点目标决定了什么？
ANSWER：Frequency of the backup 备份频率 - What is an accurate statement about the application streaming technique of application virtualization?
关于应用程序虚拟化的应用程序流技术，什么是准确的陈述？
ANSWER：Application is downloaded in portions on the client for local execution
应用程序在客户端上的部分下载，以便本地执行 -
Which type of storage device does the “X” represent in the exhibit?
"X"在展览中代表哪种类型的存储设备？
ANSWER：Object-based 基于对象 - What is an accurate statement about VLANs and VSANs in an FCoE environment with an existing FC SAN?
在现有 FC SAN 的 FCoE 环境中，关于 VLAN 和 VSAN 的准确陈述是什么？
ANSWER：A dedicated VLAN must be configured for each VSAN
必须为每个 VSAN 配置专用 VLAN
Multiple VSANs are not allowed to share a VLAN; hence a dedicated VLAN must be configured at the FCoE switch for each VSAN. It is also recommended that VLANs that carry regular LAN traffic should not be used for VSAN traffic
不允许多个 VSAN 共享 VLAN;因此，一个专用的VLAN必须在每个 VSAN 的 FCoE 交换机上配置。还建议 VLAN
携带常规 LAN 流量不应用于 VSAN 流量 - What accurately describes the seek time of a disk drive?
什么准确地描述了磁盘驱动器的寻道时间？
ANSWER：Time taken to position the read/write head over the correct track
将读/写头定位在正确的轨道上所用的时间 - An application generates 8400 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 5 configuration?
应用程序在峰值工作负载时生成 8400 个小随机 I/O，读/写比为 2：1。RAID 5 配置在高峰活动时的磁盘负载是多少？
ANSWER：16800
Formula by an ISM curriculum manager:
Peak workload = 8400 I/Os 峰值工作
Read/write ratio = 2:1 读/写比
Therefore, reads = 2/3 8400 = 5600 I/Os 读
And writes = 1/3 8400 = 2800 I/Os 写
For RAID 10, write penalty is 4. 写入惩罚
Therefore, Disk load = (5600 1) + (2800 4) = 5600 + 11200 = 16800 I/Os - What is an accurate statement about the application presentation technique of application virtualization?
关于应用程序虚拟化的应用程序表示技术的准确表述是什么？
ANSWER：Application executes remotely and its user interface is transmitted to the client
应用程序远程执行，其用户界面被传输到客户端 - To improve performance, which EMC product allows a PCIe flash card to be deployed in a compute system?
为了提高性能，哪种 EMC 产品允许 PCIe 闪存卡部署在计算系统中？
ANSWER：XtremSF
"Xtrem"标志存在于Server Side PCIe Flash (XtremSF), Server Side caching (XtremSW Cache), Hybrid Storage arrays (VMAX, VNX)和一种全新的Flash array(XtremIO)中.
B、XtremCache EMC XtremCache是一个基于服务器端的闪存软件,它配合服务器端的PCIe Flash闪存卡XtremSF技术用来加速存储的处理速度与减低存储响应延时。
C、ScaleIO EMC ScaleIO 是一款软件,它可从本地应用程序服务器存储创建基于服务器的 SAN,以便按需提供具有弹性的可扩展性能和容量。
D、XtremIO EMC的XtremIO是一款集成了全闪存介质的可扩展企业级存储阵列。 - What is a benefit of deploying a multi-site storage system-based remote replication solution?
部署基于多站点存储系统的远程复制解决方案有什么好处？
ANSWER：Ensures disaster recovery protection remains available in the event of source or remote site failures
确保灾难恢复保护在源或远程站点发生故障时保持可用 - What is a benefit of configuring EX_Ports on each Fibre Channel over IP (FCIP) gateway in an FCIP tunnel implementation?
在 FCIP 隧道实施中，通过 IP （FCIP） 网关在每个光纤通道上配置EX_Ports有什么好处？
ANSWER：Enables FC-FC routing through the FCIP tunnel without merging the fabrics
支持 FC-FC 路由通过 FCIP 隧道，而无需合并结构 - What is signified by the “variability” characteristic of big data?
大数据的"可变性"特征意味着什么？
ANSWER：Meaning of the data changes constantly 数据的含义不断变化 - What improves the performance of multi-threaded large block I/O workloads on a solid state drive?
在固态驱动器上，什么可以提高多线程大块 I/O 工作负载的性能？
ANSWER：Parallel I/O channels 并行 I/O 通道
For large block I/Os, SSDs tend to use all internal I/O channels in parallel.
对于大块 I/O，SSD 倾向于并行使用所有内部 I/O 通道。 - 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?
应用程序在峰值工作负载时生成 4200 个小随机 I/O，读/写比为 2：1。RAID 6 配置在高峰活动时的磁盘负载是多少？
ANSWER：11200
Peak workload = 4200 I/Os
Read/write ratio = 2:1
Therefore, reads = 2/3 4200 = 2800 I/Os
And writes = 1/3 4200 = 1400 I/Os
For RAID 6, write penalty is 6.
Therefore, Disk load = (2800 1) + (1400 6) = 2800 + 8400 = 11200 I/Os - Which component of a software-defined storage (SDS) environment manages and provisions storage?
软件定义存储 （SDS） 环境的哪个组件管理和预配存储？
ANSWER：SDS controller SDS 控制器 -
Which type of fabric topology does the exhibit represent?
展览代表哪种类型的结构拓扑？
ANSWER：Full mesh 全网格
B、Partial mesh 部分网格
C、Single core-edge 单核边缘
D、Dual core-edge 双核边缘 - Which LUN expansion technique provides both capacity expansion and performance improvement?
哪种 LUN 扩展技术提供容量扩展和性能改进？
ANSWER：Striped metaLUN 条纹元LUN
Striped MetaLUN顾名思义使用了数据条带化技术(data striping)。在数据被条带化的过程中，数据会被轮询地(round-robin)写入各个component LUN
由于Base LUN上的数据会被重新条带化(restriping)至各个component LUN，因此新增的空间不像concatenated一样可被立即使用。重新条带化所需的时间取决于Base LUN已使用空间、component LUN的个数和原始base LUN (或base component)的大小。必须谨慎地规划扩容方案以免空间用完后重新条带化过程还未结束。Striped MetaLUN能提升性能，因为条带化后所有的component LUN都能并行处理I/O (甚至能跨多个Bus)。不要对同一个RAID group上的LUN做Striped MetaLUN，这会影响性能并增加重新条带化所需的时间。
Striped MetaLUN要求base LUN和component LUN必须容量相同。同时，其RAID类型和硬盘种类也必须相同。Striped MetaLUN的component最多能有32个FLARE Component LUN：
- An organization plans to deploy a new application in their environment. The new application requires 3 TB of storage space. During peak workloads, the application is expected to generate 2450 IOPS with a typical I/O size of 2 KB. The capacity of each available disk drive is 500 GB. The maximum number of IOPS a drive can perform at with 70percent utilization is 90 IOPS.
组织计划在其环境中部署新应用程序。新应用程序需要 3 TB 的存储空间。在高峰工作负载期间，应用程序预计将生成 2450 个 IOPS，典型 I/O 大小为 2 KB。每个可用磁盘驱动器的容量为 500 GB。驱动器在 70% 利用率下可以执行的最大 IOPS 数为 90 IOPS。
What is the minimum number of disk drives needed to meet the application’s capacity and performance requirements given a RAID 0 configuration?
给定 RAID 0 配置，满足应用程序的容量和性能要求所需的最小磁盘驱动器数是多少？
ANSWER：28 2450 / 90 =27.2222 so … 28 disks - What is an accurate statement about infrastructure discovery?
关于基础结构发现的准确陈述是什么？
ANSWER：Creates an inventory of infrastructure components and provides information about the components
创建基础结构组件的清单，并提供有关组件的信息 - What does the transformation of an operating model for third platform adoption involve?
第三平台采用的运营模式的转换涉及哪些内容？
ANSWER：Provisioning IT resources through a self-service portal
通过自助服务门户配置 IT 资源 - What is an advantage of performing cumulative backups compared to incremental backups for the same data?
与针对相同数据的增量备份相比，执行累积备份的优势是什么？
ANSWER：Facilitates faster restores 促进更快的恢复 - An administrator has defined a backup policy. Full backups will be performed at 8 PM every Monday and incremental backups performed at 8 PM the remaining days.
管理员已定义备份策略。完整备份将在每周一晚上 8 点执行，增量备份将在剩余天数的晚上 8 点执行。
How many backup copies are required to restore the files if they were accidentally deleted on Friday morning?
如果文件在周五早上意外删除，则需要多少备份副本才能还原这些文件？
ANSWER：4 (full) Monday + Tu + We + Th.
周一晚8点 完整备份
周二晚8点 增量备份
周三晚8点 增量备份
周四晚8点 增量备份
周五早上 - What is an accurate statement about Challenge Handshake Authentication Protocol (CHAP) control?
关于挑战握手身份验证协议 （CHAP） 控制，什么是准确声明？
ANSWER：Enables initiators and targets to authenticate each other by using a shared secret code
使启动者和目标能够使用共享的密钥代码相互验证 - What is a function of the FC-1 layer of the Fibre Channel (FC) protocol stack?
光纤通道 （FC） 协议堆栈的 FC-1 层的函数是什么？
ANSWER：Defines data encoding 定义数据编码 - Which method does an intrusion detection and prevention system (IDPS) use to identify intrusions by scanning and analyzing events to detect if they are statistically different from normal events?
***检测和预防系统 （IDPS） 使用哪种方法通过扫描和分析事件来识别***，以检测事件是否与正常事件在统计上不同？
ANSWER：Anomaly-based 基于异常 - What is an accurate statement about a hybrid cloud?
关于混合云的准确表述是什么？
ANSWER：Supports data and application portability for load balancing between clouds
支持数据和应用程序可移植性，实现云之间的负载平衡 - What contains the information about backup configuration and backup metadata?
有关备份配置和备份元数据的信息是什么？
ANSWER：Backup catalog 备份目录 - Which cloud computing characteristic enables multi-tenancy and abstracts the location of provided resources?
哪种云计算特性支持多租户，并抽象提供资源的位置？
ANSWER：Resource pooling 资源池 - What is a benefit of deploying a Defense in Depth strategy?
部署深度防御战略有什么好处？
ANSWER：Provides additional time for organizations to detect and respond to an attack
为组织提供额外时间来检测和响应*** - 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?
哪种类型的 LUN 提供精确数据放置的完整控制，并允许管理员在存在工作负载争用时在不同的 RAID 集中创建 LUN？
ANSWER：Traditional 传统
Traditional LUNs are suited for applications that require predictable performance. Traditional LUNs provide full control for precise data placement and allow an administrator to create LUNs on different RAID groups if there is any workload contention. Organizations that are not highly concerned about storage space efficiency may still use traditional LUNs.
传统的 LUN 适用于需要可预测性能的应用程序。传统 LUN 提供精确数据放置的完全控制，并允许管理员在存在任何工作负载争用时在不同的 RAID 组上创建 LUN。不太关注存储空间效率的组织可能仍然使用传统的 LUN。 - Which product provides an integrated IT infrastructure solution for data center deployment by combining IT resources into a single package?
哪种产品通过将 IT 资源组合到单个包中，为数据中心部署提供了集成的 IT 基础架构解决方案？
ANSWER：VCE Vblock - What accurately describes the function of the policy engine in a file-level storage tiering environment?
`在文件级存储分层环境中，什么准确描述了策略引擎的功能？
ANSWER：Facilitates moving data from primary storage to secondary storage based on pre-defined policies
根据预定义的策略，促进将数据从主存储移动到辅助存储 - What is an example of a security management task in a storage infrastructure?
存储基础结构中的安全管理任务示例是什么？
ANSWER：Configuring LUN masking to restrict hosts from accessing a specific LUN
答案：配置 LUN 屏蔽以限制主机访问特定 LUN
16.2.4 Security Management Security management prevents unauthorized access and configuration of storage infrastructure components. For example, while deploying an application or a server, the security management tasks include managing user accounts and access policies, that authorizes users to perform role-based activities. The security management tasks in the SAN environment include configuration of zoning to restrict an HBA’s unauthorized access to the specific storage array ports. LUN masking prevents data corruption on the storage array by restricting host access to a defined set of logical devices.
16.2.4 安全管理 可防止未经授权访问和配置存储基础结构组件。例如，在部署应用程序或服务器时，安全管理任务包括管理用户帐户和访问策略，这些策略授权用户执行基于角色的活动。SAN 环境中的安全管理任务包括分区配置，以限制 HBA 对特定存储阵列端口的未授权访问。LUN 屏蔽通过限制主机对一组定义的逻辑设备的访问来防止存储阵列上的数据损坏。 - 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?
在基于对象的存储系统中，使用擦除编码技术将数据划分为 10 个数据段和 4 个编码段。此配置保护数据的磁盘驱动器故障的最大数量是多少？
ANSWER：4
擦除编码技术：作原理是将存储系统接收到的大块数据进行切割并编码，之后再对切割后的数据进行再次切割并编码，重复这一操作直到数据切割到满意的数据块大小为止，这样使得数据块分散成多个数据块，再进行冗余校验，将不重复的数据块和编码写入存储系统之中。 - An organization performs a full back up every Sunday and incremental back ups on the remaining days at 9:00 AM. However, at 10 PM on Friday, a data corruption occurs that requires a data restoration from the backup copies.
组织每周日执行完全备份，并在剩余日期上午 9：00 执行增量备份。但是，在周五晚上 10 点，会发生数据损坏，需要从备份副本中还原数据。
How many backup copies are required to perform this restoration?
执行此还原需要多少备份副本？
ANSWER：6
周日 完全备份
周一9点 增量备份
周二9点 增量备份
周三9点 增量备份
周四9点 增量备份
周五9点 增量备份
周五晚10点 数据损坏 -
What is an accurate statement about three-way NDMP backup in a NAS environment?
关于 NAS 环境中的三向 NDMP 备份的准确表述是什么？
ANSWER：Backup data is sent directly from NAS to the backup device
备份数据直接从 NAS 发送到备份设备 - Which data center characteristic ensures that data is stored and retrieved exactly as it was received?
哪个数据中心特性可确保数据的存储和检索完全按照接收方式进行？
ANSWER：Data integrity 数据完整性
Data integrity: Data integrity refers to mechanisms, such as error correction codes or parity bits, which ensure that data is stored and retrieved exactly as it was received
数据完整性：数据完整性是指错误更正代码或奇偶校验位等机制，它们确保数据的存储和检索与接收数据完全一样 - Why should a replica be consistent with its source?
为什么副本应该与其源一致？
ANSWER：Ensure the usability of the replica 确保副本的可用性
Consistency is a primary requirement to ensure the usability of replica device. In case of file systems (FS), consistency can be achieved either by taking FS offline i.e. by un-mounting FS or by keeping FS online by flushing compute system buffers before creating replica.
一致性是确保复制设备可用性的首要要求。在文件的情况下系统 （FS），可以通过使 FS 脱机（即通过未安装 FS 或
通过在创建副本之前刷新计算系统缓冲区来保持 FS 联机。 - Which NAS implementation requires separate management of the NAS head and the storage?
哪些 NAS 实施需要分别管理 NAS 头和存储？
ANSWER：Gateway 网关 - What is an accurate statement about an integrated NAS controller?
`关于集成 NAS 控制器的准确陈述是什么？
ANSWER：Contains a specialized operating system dedicated to file serving
包含专用于文件服务的专用操作系统 - A system has three components and all three components need to be operational for 24 hours; Monday through Friday. During a particular week, failure of component 3 occurred as follows:
系统有三个组件，所有三个组件都需要 24 小时运行;星期一到星期五在特定周内，组件 3 发生故障的情况如下：
✑ Tuesday = 8 AM to 1 PM 5 hours
✑ Thursday = 5 PM to 10 PM 5 hours
✑ Friday = 5 AM to 10 AM 5 hours
What is the mean time between failures on component 3 for that week?
该周组件 3 发生故障之间的平均时间是多少？
ANSWER：35 hours
= ((245) -(5+5+5))/3=35
MTBF=Total Uptime (245-15)/number of failures (3) =105/3=35 - Which type of digital data has no defined format but has a self-describing structure that enables its analysis?
哪种类型的数字数据没有定义的格式，但具有能够进行分析的自描述结构？
ANSWER：Semi-structured data 半结构化数据 - What is a benefit of backing up data to a disk library?
将数据备份到磁盘库有什么好处？
ANSWER：Provides improved backup and recovery performance
提供改进的备份和恢复性能 - The exhibit represents an FCIP tunnel configuration that merges the two FC SANs at either end of the tunnel. Which types of ports do the labels "X" and "Y" represent on the FCIP gateway shown in the exhibit?
ANSWER：X = E_Port and Y = VE_Port
E端口：Expansion Port 扩展端口；用于通过ISL（内部交换链接）连接多个交换机
VE_Port：虚拟E_Port，它用于FCIP网络中。 - Which process uses a file-level storage tiering technique to perform policy-based data movement?
哪个进程使用文件级存储分层技术执行基于策略的数据移动？
ANSWER：Archiving 归档 - What is an example of an active attack on an IT infrastructure?
对 IT 基础结构进行主动***的示例是什么？
ANSWER：Attempt to modify information for malicious purposes尝试出于恶意目的修改信息 - What is an accurate statement about Platform as a Service?
关于平台即服务的精确表述是什么？
ANSWER：Consumer has control over the deployed applications
使用者可以控制已部署的应用程序 - Which cloud service does VMware vCloud Air provide?
VMware vCloud Air 提供哪些云服务？
ANSWER：Infrastructure as a Service 基础设施即服务 - What is a function of the metadata manager in a compute-based storage area network (SAN)?
基于计算的存储区域网络 （SAN） 中的元数据管理器的功能是什么？
ANSWER：Controls load balancing and data migration in a compute-based SAN
在基于计算的 SAN 中控制负载平衡和数据迁移 - Which technique protects the data in cache from power failures?
哪种技术可保护缓存中的数据免受电源故障的影响？
ANSWER：Vaulting 跳马 - What is a function of a virtual machine manager?
虚拟机管理器的功能是什么？
ANSWER：Abstracts physical hardware and presents it to a virtual machine
抽象物理硬件并将其呈现给虚拟机 - Which benefit does the measured service characteristic provide to a cloud service provider?
测量的服务特征为云服务提供商提供哪些好处？
ANSWER：Enables control and optimization of resource use
启用控制和支持资源使用的优化 - What is an accurate statement about remote desktop services?
关于远程桌面服务的准确表述是什么？
ANSWER：Operating system and applications hosted on a remote compute system are shared by multiple users
托管在远程计算系统上的操作系统和应用程序由多个用户共享 - What is a benefit of implementing a virtual machine (VM) storage migration?
实现虚拟机 （VM） 存储迁移有什么好处？
ANSWER：Balances storage utilization by redistributing VMs across different storage systems
通过跨不同的存储系统重新分配 VM 来平衡存储利用率
In a VM storage migration, VM disk files are moved from one storage system to another system without any downtime or service disruption. This approach enables the administrator to move VM disk files across dissimilar storage systems.
在 VM 存储迁移中，VM 磁盘文件从一个存储系统移动到另一个系统没有任何停机时间或服务中断。此方法使管理员能够移动VM磁盘文件跨不同的存储系统。 - In which data access method does the file system access an iSCSI storage system over a network?
文件系统通过网络访问 iSCSI 存储系统的方法是什么？
ANSWER：Block-based 基于块 - What is a characteristic of software-defined networking?
软件定义的网络的特征是什么？
ANSWER：Abstracts and separates the control plane from the data plane
抽象控制平面并将其与数据平面分开 - Why is it important for organizations to maintain a copy of data at a remote site?
为什么组织在远程站点维护数据副本很重要？
ANSWER：Ensure disaster recovery 确保灾难恢复 - Which global addressing does the REST application programming interface use for the discovery of a storage service?
REST 应用程序编程接口用于发现存储服务？
ANSWER：Uniform Resource Identifier 统一资源标识符 - What is an accurate statement about the Network File System (NFS) protocol?
关于网络文件系统 （NFS） 协议的准确声明是什么？
ANSWER：Provides a set of remote procedure calls to access a remote file system
提供一组远程过程调用以访问远程文件系统 -
Which data structure enables two node ports to identify and manage a set of information units in a Fibre Channel (FC) SAN?
哪种数据结构使两个节点端口能够识别和管理光纤通道 （FC） SAN 中的一组信息单元？
ANSWER：Exchange 交换 - What is an example of an availability management task in storage infrastructure management?
存储基础结构管理中的可用性管理任务的示例是什么？
ANSWER：Designing a new replication solution for data redundancy
为数据冗余设计新的复制解决方案 - A customer has a requirement to perform a backup each night. However, the customer has a limited amount of time for backups to run on week nights,Monday through Friday evenings.
Which backup granularity type is recommended to meet the backup window for those nights?
客户要求每晚执行备份。但是，客户在星期一到星期五晚上运行备份的时间有限。
建议使用哪种备份粒度类型来满足这些夜晚的备份窗口？
ANSWER：Incremental 增量 -
Which fabric login type occurs between two N_Ports to exchange FC-4 upper layer protocol-related parameters?
在两个N_Ports之间发生哪种结构登录类型来交换 FC-4 上层协议相关参数？
ANSWER：PRLI
B、FLOGI C、PLOGI D、WWNN
PRLI
Upper layer protocol communication. Well, ever since SCSI was designed and engineered (1970s, or so, previously SASI...), SCSI initiators need to discover SCSI targets. So, during PRLI, N_Port SCSI initiators discover N_Port SCSI targets (which is an opportunity for the host (maybe a UNIX host) to assign a target ID to the device path).
PRLI
上层协议通信。那么，自从SCSI的设计和设计（20世纪70年代，或者以前是SASI...）以来，SCSI的发起者就需要发现SCSI目标。因此，在 PRLI 期间，N_Port SCSI 启动器会发现N_Port SCSI 目标（这是主机（可能是 UNIX 主机）向设备路径分配目标 ID 的机会）。
FLOGI
N_Port requests a unique 24-bit address from the Fabric Login Server (accessible via an F_port on a Fabric switch).
FLOGI
N_Port从结构登录服务器请求唯一的 24 位地址（通过结构交换机上的F_port访问）。
PLOGI
N_Port informs the Fabric Name Server of its personality and capabilities. For example:
WWNN, WWPN
Buffer credits for flow control
clock frequency ('speed capability')
Upper layer protocol support (eg. SCSI-3, IP)
PLOGI
N_Port通知结构名称服务器其个性和功能。例如：
WWNN， WWPN
用于流量控制的缓冲区积分
时钟频率（"速度能力"）
上层协议支持（例如SCSI-3， IP） - An organization plans to deploy a new application in their environment. The new application requires 2 TB of storage space. During peak workloads, the application is expected to generate 9800 IOPS with a typical I/O size of 4 KB. The capacity of each available disk drive is 250 GB. The maximum number of IOPS a drive can perform at with 70percent utilization is 90 IOPS.
组织计划在其环境中部署新应用程序。新应用程序需要 2 TB 的存储空间。在高峰工作负载期间，应用程序预计将生成 9800 个 IOPS，典型 I/O 大小为 4 KB。每个可用磁盘驱动器的容量为 250 GB。驱动器在 70% 利用率下可以执行的最大 IOPS 数为 90 IOPS。
What is the minimum number of disk drives needed to meet the application’s capacity and performance requirements given a RAID 0 configuration?
给定 RAID 0 配置，满足应用程序的容量和性能要求所需的最小磁盘驱动器数是多少？
ANSWER：110
2000/250 =8 8块磁盘达到2TB容量
9800*4=39200KB=39.2MB
9800/90=109 109块磁盘达到9800 IOPS - What is an activity in the risk assessment step of risk management?
风险管理风险评估步骤中的活动是什么？
ANSWER：Determine the likelihood of a risk 确定风险的可能性 - What is an accurate statement about a software RAID implementation?
关于软件 RAID 实现的准确陈述是什么？
ANSWER：Uses CPU cycles of a compute system to perform RAID calculations
使用计算系统的 CPU 周期执行 RAID 计算
Software RAID affects the overall system performance. This is due to additional CPU cycles required to perform RAID calculations软件 RAID 会影响整体系统性能。这是因为执行 RAID 计算需要额外的 CPU 周期 - What is an accurate statement about a fabric-provided MAC address (FPMA) used in an FCoE SAN?
关于 FCoE SAN 中使用的结构提供的 MAC 地址 （FPMA） 的准确声明是什么？
ANSWER：FCoE switches provide MAC addresses to VN_Ports during node login
FCoE 交换机在节点登录期间向VN_Ports提供 MAC 地址
In this type of addressing, the VN_Ports receive MAC addresses from the FCoE switches dynamically during login. The VN_Ports then use their granted MAC addresses for communication.
在这种类型的寻址中，VN_Ports从 FCoE 交换机接收 MAC 地址在登录期间动态。然后，VN_Ports将其授予的 MAC 地址用于通信。 - What is a benefit when a node is added to a scale-out NAS cluster?
将节点添加到横向扩展 NAS 群集时有什么好处？
ANSWER：Increased cluster performance 提高群集性能 - Which fabric login type enables two N_Ports to exchange service parameters to establish a session?
哪种结构登录类型允许两个N_Ports交换服务参数以建立会话？
ANSWER：PLOGI
From the ISM Course Guide : “Port login (PLOGI): It is performed between two N_Ports to establish a session. The initiator N_Port sends a PLOGI request frame to the target N_Port, which accepts it. The target N_Port returns an ACC to the initiator N_Port. Next, the N_Ports exchange service parameters relevant to the session.”
从 ISM 课程指南："端口登录 （PLOGI）：在两个N_Ports之间执行，以建立会话。N_Port，向接受该帧的目标N_Port发送 PLOGI 请求帧。目标N_Port将 ACC 返回到N_Port。接下来，N_Ports交换与会话相关的服务参数。 - Which data access method enables a compute system to access a file system that resides on a storage system?
哪种数据访问方法使计算系统能够访问驻留在存储系统上的文件系统？
ANSWER：File-based 基于文件 - What is a function of the orchestration layer in a data center infrastructure?
数据中心基础结构中的业务流程层的功能是什么？
ANSWER：Provides workflows for automated execution of management tasks
提供用于自动执行管理任务的工作流 - In an FCoE environment, which functionality provides a framework for the allocation of bandwidth to different network traffic classes?
在 FCoE 环境中，哪些功能提供了将带宽分配给不同网络流量类的框架？
ANSWER：Enhanced transmission selection 增强传输选择
用于避免一种流量类型的大规模流量猝发影响其它流量类型，为不同的流量类型提供最小带宽保证。一种流量类型只有在其它流量类型带宽不占用的情况下，才能使用分配带宽之外的额外带宽。这使多种流量类型可在同一网络中和谐共存。 - Which component is required for a “recovery-in-place” backup approach?
"就地恢复"备份方法需要哪个组件？
ANSWER：Disk-based backup target 基于磁盘的备份目标 - What is a benefit of block-level storage virtualization?
块级存储虚拟化的好处是什么？
ANSWER：Enables the online expansion of virtual volumes
支持虚拟卷的在线扩展 - An organization performs a full back up every Sunday and cumulative backups on the remaining days. On Thursday, a data corruption occurs that requires a data restoration from the backup copies.
组织每周日执行完全备份，并在剩余日期执行累积备份。周四，发生数据损坏，需要从备份副本还原数据。
How many backup copies are required to perform this restoration?
执行此还原需要多少备份副本？
ANSWER：4
周日 完全备份
周一 增量备份
周二 增量备份
周三 增量备份
周四 数据损坏 - Which action takes place during the login phase in an FCoE SAN?
在 FCoE SAN 的登录阶段执行哪些操作？
ANSWER：VN_Ports obtain FC addresses VN_Ports获取 FC 地址 - An organization plans to deploy a new application in their environment. The new application requires 4 TB of storage space. During peak workloads, the application is expected to generate 4900 IOPS with a typical I/O size of 8 KB. The capacity of each available disk drive is 500 GB. The maximum number of IOPS a drive can perform at with a 70 percent utilization is 110 IOPS.
组织计划在其环境中部署新应用程序。新应用程序需要 4 TB 的存储空间。在高峰工作负载期间，应用程序预计将生成 4900 个 IOPS，典型 I/O 大小为 8 KB。每个可用磁盘驱动器的容量为 500 GB。驱动器在 70% 的利用率下可以执行的最大 IOPS 数为 110 IOPS。
What is the minimum number of disk drives needed to meet the application’s capacity and performance requirements given a RAID 0 configuration?
给定 RAID 0 配置，满足应用程序的容量和性能要求所需的最小磁盘驱动器数是多少？
ANSWER：45
4900/110=44.5, so 45 disks. - Which lossless Ethernet functionality helps Converged Enhanced Ethernet (CEE) devices to convey and configure their features with the other CEE devices in the network?
哪些无损以太网功能可帮助融合增强型以太网 （CEE） 设备与网络中的其他 CEE 设备传输和配置其功能？
ANSWER：Data center bridging exchange protocol 数据中心桥接交换协议 - Which type of login is performed between an N_Port and an F_Port in a Fibre Channel SAN environment?
在光纤通道 SAN 环境中，N_Port和F_Port之间执行哪种类型的登录？
ANSWER：FLOGI flogi 是FC网络中地址映射中的一个动作，N_Port和F_Port之间 - How does an iSCSI initiator discover its targets? iSCSI 的起因如何发现其目标？
ANSWER：Initiator sends a query to an iSNS server for a list of available targets
活动商向 iSNS 服务器发送查询，以获取可用目标的列表
The initiators and targets can be configured to automatically register themselves with the iSNS server. Whenever an initiator wants to know the targets that it can access, it can query the iSNS server for a list of available targets.
启动器和目标可以配置为自动向 iSNS 服务器注册。每当创建者想知道它可以访问的目标时，它可以查询 iSNS 服务器以找到可用目标的列表。 -
Which type of Fibre Channel (FC) ports do the labels "X" and "Y" represent in the exhibit?
ANSWER：X is an N_Port and Y is an E_Port
N_Port = “Fabric直接连接设备” 点对点模式的端口，设备直连模式端口。
E_Port = “扩展端口” (交换机到交换机) Expansion端口。用于和其它交换机建立互联的端口 - What is compromised by a passive attack on an IT infrastructure?
IT 基础架构的被动***会危害什么？
ANSWER：Confidentiality 保密 - What is an accurate statement about OAuth security control?
关于 OAuth 安全控制的准确声明是什么？
ANSWER：Allows a client to access protected resources from a resource server on behalf of a resource owner
允许客户端代表资源所有者从资源服务器访问受保护的资源 - What is determined based on the recovery point objective in an asynchronous remote replication?
根据异步远程复制中的恢复点目标确定什么？
ANSWER：Size of the buffer 缓冲区的大小 - What is a benefit of using content addressed storage (CAS) as an archival solution?
使用内容寻址存储 （CAS） 作为存档解决方案有什么好处？
ANSWER：Ensures content authenticity and integrity
确保内容的真实性和完整性 - What is a function of the NDMP server in an NDMP-based backup approach?
在基于 NDMP 的备份方法中，NDMP 服务器的功能是什么？
ANSWER：Reads the data from the storage device and sends the data to the backup device
从存储设备读取数据并将数据发送到备份设备 -
Which type of Fibre Channel (FC) ports do the labels "X" and "Y" represent in the exhibit?
ANSWER：X is an N_Port and Y is an N_Port
N_Port：点对点模式的端口，设备直连模式端口。 - Which feature of an object-based storage system abstracts and provides a common view of storage independent of location to applications?
基于对象的存储系统的哪个功能抽象并提供独立于应用程序位置的存储的通用视图？
ANSWER：Global namespace 全局命名空间 - What is a benefit of using converged infrastructure for building a data center?
使用融合基础架构构建数据中心有什么好处？
ANSWER：Reduces the time to acquire and deploythe infrastructure
缩短获取和部署基础结构的时间 -
A service provider is offering cloud services to Enterprise P and Enterprise Q.
服务提供商正在向企业P和企业Q提供云服务。
Which cloud deployment model does the exhibit represent?
展览代表哪种云部署模型？
ANSWER：Externally-hosted private cloud 外部托管的私有云 - A start-up company with a limited budget is planning to adopt a hybrid cloud solution for their operations. The company has business-critical applications that serve customers and have strict service levels. In addition, the company has less critical applications such as backup and archive.
一家预算有限的初创公司正计划为其运营采用混合云解决方案。该公司拥有服务客户且具有严格服务级别的业务关键型应用程序。此外，该公司拥有不太重要的应用程序，如备份和归档。
Which hybrid cloud strategy should be recommended to the company?
应该向公司推荐哪种混合云战略？
内部私有云
内部专用云
外部托管的私有云
公共云
ANSWER：Deploy the business-critical applications on an externally-hosted private cloud.
Deploy the less critical applications on a public cloud.
在外部托管的私有云上部署业务关键型应用程序。
在公共云上部署不太重要的应用程序。
B. Deploy the business-critical applications on an on-premise private cloud.
Deploy the less critical applications on an externally-hosted private cloud.
B. 在内部私有云上部署业务关键型应用程序。
在外部托管的私有云上部署不太重要的应用程序。
C. Deploy the business-critical applications on an on-premise private cloud.
Deploy the less critical applications on a public cloud.
C. 在内部私有云上部署业务关键型应用程序。
在公共云上部署不太重要的应用程序。
D. Deploy the business-critical applications on an externally-hosted private cloud.
Deploy the less critical applications on an on-premise private cloud.
D. 在外部托管的私有云上部署业务关键型应用程序。
在内部专用云上部署不太重要的应用程序。 - What is an accurate statement about a logical volume in a compute system?
关于计算系统中的逻辑卷的准确陈述是什么？
ANSWER：Can span across multiple physical volumes
可以跨越多个物理卷 - A system has three components and all three components need to be operational for 24 hours; Monday through Friday. During a particular week, failure of component 1 occurred as follows:
系统有三个组件，所有三个组件都需要 24 小时运行;星期一到星期五在特定周内，组件 1 的故障如下：
✑ Tuesday = 8 AM to 11 AM 3 hours
✑ Thursday = 8 PM to 10 PM 2 hours
✑ Friday = 5 AM to 9 AM 4 hours
What is the mean time between failures on component 1 for that week?
该周组件 1 发生故障之间的平均时间是多少？
ANSWER：37 hours
= ((24*5) – (3+2+4))/3= 111/3=37 -
Which environment is represented in the exhibit?
展览中展示了哪些环境？
ANSWER：Write-back cache 回写缓存 - Which attack is carried out by sending a spoofing e-mail and redirecting a user to a false website?
通过发送欺骗电子邮件并将用户重定向到虚假网站，会执行哪些***？
ANSWER：Phishing 钓鱼 - An organization plans to deploy a deduplication solution by retaining their legacy backup application. They are concerned about the application servers’ performance and a long backup window during backups.
组织计划通过保留其旧版备份应用程序来部署重复数据消除解决方案。他们担心应用程序服务器的性能和备份期间的备份窗口很长。
Which deduplication solution(s) should be recommended to the organization?
应向组织推荐哪种重复数据消除解决方案？
ANSWER：Post-process 后处理
From ISM course : “In post-processing deduplication, the backup data is first stored to the disk in its native backup format and deduplicated after the backup is complete. In this approach, the deduplication process is separated from the backup process and the deduplication happens outside the backup window”
从 ISM 课程："在后处理重复数据消除中，备份数据首先以本机备份格式存储到磁盘，并在备份完成后进行重复数据消除。在此方法中，重复数据消除过程与备份过程分离，重复数据消除发生在备份窗口之外" - Which process groups multiple physical drives and presents them to a compute system as a single logical volume?
哪个进程将多个物理驱动器分组，并将其作为单个逻辑卷呈现给计算系统？
ANSWER：Concatenation 串联 - Which solid state drive component performs write coalescing?
哪个固态驱动器组件执行写入合并？
ANSWER：Controller 控制器 - Which operation is performed by a scale-out NAS cluster when clients send data to the cluster?
当客户端将数据发送到群集时，横向扩展 NAS 群集执行哪个操作？
ANSWER：Data is divided and stored on multiple nodes in parallel
数据被并行分割并存储在多个节点上 - What accurately describes a VSAN?
什么准确地描述了 VSAN？
ANSWER：A logical fabric on an FC SAN that enables communication among a group of nodes
FC SAN 上允许一组节点之间的通信的逻辑结构 - What is an accurate statement about a virtual machine (VM) snapshot?
关于虚拟机 （VM） 快照的准确陈述是什么？
ANSWER：Captures the state and data of a running VM at a specific point-in-time
在特定时间点捕获正在运行的 VM 的状态和数据 -
Which type of fabric topology does the exhibit represent?
ANSWER：Partial mesh 部分网格 - What is an accurate statement about VSAN trunking?
关于 VSAN 中继的准确陈述是什么？
ANSWER：Allows network traffic from multiple VSANs to traverse a single interswitch link
允许来自多个 VSAN 的网络流量遍历单个交换机间链路 - What provides the ability to automatically relocate extents across physical storage drives over the entire pool when new drives are added to the pool?
当新驱动器添加到池中时，哪些功能能够在整个池中自动重新定位整个池中的物理存储驱动器的扩展盘区？
ANSWER：Storage pool rebalancing 存储池重新平衡 - Which EMC product provides a software-defined storage platform that supports object storage services?
哪个 EMC 产品提供了支持对象存储服务的软件定义的存储平台？
ANSWER：Elastic Cloud Storage 弹性云存储 - Which EMC product provides a software-defined storage platform to create a compute-based storage area network?
哪种 EMC 产品提供了软件定义的存储平台来创建基于计算的存储区域网络？
ANSWER：ScaleIO
ScaleIO:使用弹性聚合软件产品来革新数据存储，该软件产品利用本地磁盘来创建服务器存储区域网络 (SAN)。纯软件方式的基于服务器的存储区域网络 (SAN)，将存储和计算资源聚合到一起，形成单层的企业级存储产品。 ScaleIO 存储弹性灵活，可以提供可线性扩展的性能。 其横向扩展服务器 SAN 体系结构可以从几个服务器扩展至数千服务器。 - Which technique is used in Kerberos to authenticate a client-server application across an insecure network?
Kerberos 中使用哪种技术跨不安全的网络对客户端-服务器应用程序进行身份验证？
ANSWER：Secret-key cryptography 密钥加密 - What is an accurate statement about the Common Internet File System (CIFS) protocol?
关于通用互联网文件系统 （CIFS） 协议的准确表述是什么？
ANSWER：Enables a CIFS server to maintain connection information regarding every connected client
使 CIFS 服务器能够维护有关每个连接客户端的连接信息 - What is an accurate statement about the function of an archiving server?
关于归档服务器功能的准确表述是什么？
ANSWER：Enables the ability to configure policies for archiving data
能够配置用于存档数据的策略
An archiving server is software installed on a server that enables administrators to configure the policies for archiving data. Policies can be defined based on file size, file type, or creation/modification/access time. Once the data is identified for archiving, the archiving server creates the index for the data to be moved. By utilizing the index, users may also search and retrieve their data with the web search tool.
存档服务器是安装在服务器上的软件，使管理员能够配置用于存档数据的策略。可以基于定义策略文件大小、文件类型或创建/修改/访问时间。一旦数据被识别为存档时，存档服务器将创建要移动的数据的索引。通过利用索引，用户还可以使用 Web 搜索工具搜索和检索其数据。 - In an FC SAN environment, an administrator wants to ensure that a particular switch port cannot function as an E_Port and cannot be used to create an interswitch link. Which security mechanism should the administrator use?
在 FC SAN 环境中，管理员希望确保特定交换机端口不能作为E_Port，也不能用于创建交换机间链接。管理员应使用哪种安全机制？
ANSWER：Port type locking 端口类型锁定 - What is signified by the “variety” characteristic of big data?
大数据的"多样性"特征意味着什么？
ANSWER：Data is generated in different formats by numerous sources
数据由多个来源以不同格式生成 - What is enabled by the N_Port ID virtualization (NPIV)?
N_Port ID 虚拟化 （NPIV） 启用了哪些功能？
ANSWER：A single physical N_Port to obtain multiple FC addresses
单个物理N_Port以获取多个 FC 地址 - An application generates 8400 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 1/0 configuration
应用程序在峰值工作负载时生成 8400 个小随机 I/O，读/写比为 2：1。RAID 1/0 配置在高峰活动时的磁盘负载是多少？
ANSWER：11200 2x write IOs (2x 2800) + 1x read IOs (5600)
Formula by an ISM curriculum manager:
Peak workload = 8400 I/Os 峰值工作
Read/write ratio = 2:1 读/写比
Therefore, reads = 2/3 8400 = 5600 I/Os 读
And writes = 1/3 8400 = 2800 I/Os 写
For RAID 10, write penalty is 2. 写入惩罚
Therefore, Disk load = (5600 1) + (2800 2) = 5600 + 5600 = 11200 I/Os - What is an accurate statement about a denial-of-service attack?
关于拒绝服务***的准确陈述是什么？
ANSWER：Prevents legitimate users fromaccessing resources or services
阻止合法用户访问资源或服务 - What is an accurate statement about incremental forever backups?
关于增量永久备份的准确声明是什么？
ANSWER：Requires only one initial full back up
只需要一个初始完全备份 - What is an accurate statement about full volume replication?
关于完整卷复制的准确陈述是什么？
ANSWER：Target device is at least as large as the source device
目标设备至少与源设备一样大 - Which type of storage system is built specifically for storing fixed content?
哪种类型的存储系统是专门为存储固定内容而构建的？
ANSWER：Content addressed storage 内容寻址存储 - What refers to an IT infrastructure's ability to function based on business expectations during its specified time of operations?
IT 基础架构在指定运营期间基于业务期望运行的能力，这是指什么？
ANSWER：Information availability 信息可用性
Information availability (IA) refers to the ability of an IT infrastructure to function according to business expectations during its specified time of operation. IA ensures that people (employees, customers, suppliers, and partners) can access information whenever they need it. IA can be defined in terms of the accessibility, reliability, and timeliness of the information.
信息可用性 （IA） 是指 IT 基础结构在指定运行期间根据业务期望运行的能力。IA 确保员工（员工、客户、供应商和合作伙伴）在需要时随时访问信息。IA 可以根据信息的可访问性、可靠性和及时性来定义。 - What accurately describes link aggregation in a SAN?
什么准确地描述了 SAN 中的链路聚合？
ANSWER：Combines two or more parallel interswitch links into a single logical interswitch link
将两个或多个并行互通链路合并到单个逻辑交换机间链路中 - What is a benefit of a “recovery-in-place” backup approach in a virtualized data center?
虚拟化数据中心中的"就地恢复"备份方法有什么好处？
ANSWER：Provides instant recovery of a failed virtual machine
提供故障虚拟机的即时恢复 - What is an accurate statement about a data lake?
关于数据湖的准确陈述是什么？
ANSWER：Stores data as an exact or near-exact copy of the source format
将数据存储为源格式的精确或近乎精确的副本 - What maps the logical path of a file system to its physical path in a file-level virtualization implementation?
在文件级虚拟化实现中，什么将文件系统的逻辑路径映射到其物理路径？
ANSWER：Global namespace 全局命名空间 - Which elements are associated with an object in an object-based storage system?
哪些元素与基于对象的存储系统中的对象相关联？
ANSWER：Data, metadata, object ID, and attributes 数据、元数据、对象 ID 和属性
B、LUN ID, data, metadata, and object ID LUN ID、数据、元数据和对象 ID
C、Metadata, object ID, attributes, and file path 元数据、对象 ID、属性和文件路径
D、Object ID, attributes, LUN ID, and file path 对象 ID、属性、LUN ID 和文件路径 - Which part of the Fibre Channel (FC) frame does the label “X” represent in the exhibit?
ANSWER：Frame Header 帧头 - What is an advantage of a software-based object storage implementation?
基于软件的对象存储实现的优势是什么？
ANSWER：Provides the flexibility to reuse the existing infrastructure
提供重用现有基础架构的灵活性 - Which data center characteristic ensures that adequate resources are provided to efficiently store and process data?
哪个数据中心特性可确保提供足够的资源来高效存储和处理数据？
ANSWER：Capacity 能力 - What accurately describes an attack vector in an IT infrastructure?
IT 基础架构中的***媒介准确描述什么？
ANSWER：Series of steps that must be followed in order to complete an attack
完成***时必须遵循的一系列步骤 - Which EMC product enables management for Vblock systems?
哪种 EMC 产品支持 Vblock 系统的管理？
ANSWER：Unified Infrastructure Manager 统一基础架构管理器
Vblock是一个融合了思科服务器与网络、EMC存储系统与管理软件、VMware虚拟化软件的预配置数据中心虚拟化基础架构包。它是指一种建立系统的方式，提供一个集成包，是一种完整的IT基础架构，并不是指一个具体的设备。 - What keeps the name server up-to-date on all switches in a fabric?
是什么让名称服务器在结构中的所有交换机上保持最新？
ANSWER：SW-RSCN
RSCN(Registered State Change Notification 注册状态更改通知)
Zone的配置生效后网络中会有RSCN产生。划分了Zone后RSCN也会被Zone隔离，只有Zone中的设备能接收到RSCN。 - What is an accurate statement about Software as a Service?
关于软件即服务的精确陈述是什么？
ANSWER：Consumer has limited control over user-specific application configuration settings
使用者对用户特定应用程序配置设置的控制有限 - Which method is used to establish a *** connection between a primary and remote data center to perform secure remote replication?
哪种方法用于在主数据中心和远程数据中心之间建立 *** 连接以执行安全的远程复制？
ANSWER：Site-to-site *** connection 站点到站点 *** 连接 - What is an advantage of the changed block tracking backup technique?
更改的块跟踪备份技术的优势是什么？
ANSWER：Reduces the backup window 减少备份窗口
increase the efficiency of image-based backup, some
vendors support incremental backup through tracking changed blocks. This feature identifies and tags any blocks that have changed since the last VM snapshot. This enables the backup application to backup only the blocks that have changed, rather than backing up every block.
Changed block tracking technique dramatically reduces the amount of data copied before additional data reduction technologies are applied, reduces the backup windows and the amoun of required storage for protecting VMs.
提高基于映像的备份效率，有些供应商通过跟踪已更改的块支持增量备份。此功能标识和标记自上次 VM 快照以来更改的任何块。这启用备份应用程序仅备份已更改的块，而不是备份每个块。
更改的块跟踪技术大大减少了之前复制的数据量应用其他数据缩减技术，减少备份窗口和数量保护 VM 所需的存储。 - Which type of digital data consists of textual data with inconsistent formats but can be formatted with the use of software tools?
哪种类型的数字数据由格式不一致的文本数据组成，但可以使用软件工具进行格式化？
ANSWER：Quasi-structured data 准结构化数据 -
The exhibit illustrates a software-defined storage environment. What do the labels “X” and “Y” represent in the exhibit?
本图演示了软件定义的存储环境。展览中"X"和"Y"的标签代表什么？
ANSWER：X is a virtual storage system and Y is a virtual storage pool
X 是虚拟存储系统，Y 是虚拟存储池 -
Which fabric service distributes SW-RSCNs to the other switches in a Fibre Channel SAN?
哪种交换矩阵服务将 SW-RSCN 分发到光纤通道 SAN 中的其他交换机？
ANSWER：Fabric controller 结构控制器 - Which EMC product provides a software-defined platform that supports both block and file storage services?
哪个 EMC 产品提供了软件定义的平台，支持块和文件存储服务？
ANSWER：ViPR Controller - In which stage of the business continuity planning lifecycle does an organization identify critical business processes and assign recovery priorities?
在业务连续性规划生命周期的哪个阶段，组织会识别关键业务流程并分配恢复优先级？
ANSWER：Analyzing 分析 - What is an accurate statement about three-way NDMP backup in a NAS environment?
关于 NAS 环境中的三向 NDMP 备份的准确表述是什么？
ANSWER：Backup device can be shared among multiple NAS heads
备份设备可在多个 NAS 头之间共享
In NDMP-based backup regardless of 2-way or 3-way, data is sent directly from the NAS head to the backup device without impacting application servers.
在基于 NDMP 的备份中，无论双向备份还是 3 路备份，数据都会直接从 NAS 头发送到备份设备，而不会影响应用程序服务器。 - What is a component of an FCoE switch?
FCoE 交换机的组件是什么？
ANSWER：Ethernet Bridge 以太网网桥 - An organization has several virtual machines (VMs) deployed in their data center. The VM files are stored on a block-based storage system. The applications on the VMs are impacted during VM backup because the backup agents on the VMs are consuming a large amount of resources.
一个组织在其数据中心中部署了多个虚拟机 （VM）。VM 文件存储在基于块的存储系统上。VM 上的应用程序在 VM 备份期间受到影响，因为 VM 上的备份代理正在消耗大量资源。
Which alternate backup solution is recommended to address this issue?
建议使用哪种备用备份解决方案来解决此问题？
ANSWER：Image-based backup 基于映像的备份 - 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?
在基于对象的存储系统中，使用擦除编码技术将数据划分为 9 个数据段和 3 个编码段。此配置保护数据的磁盘驱动器故障的最大数量是多少？
ANSWER：3 - What is a benefit of application virtualization?
应用程序虚拟化的好处是什么？
ANSWER：Avoids conflicts between different versions of the same application
避免同一应用程序的不同版本之间的冲突 - What is a characteristic of a scale-out NAS?
横向扩展 NAS 的特征是什么？
ANSWER：File system grows dynamically as nodes are added in the cluster (Scale out)
文件系统在群集中添加节点时动态增长（横向扩展）
来源：51CTO
作者：21412319
链接：https://blog.51cto.com/treelang/2465670