H13-611 - V4.5-Enu V9.02 [PDF]

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Exam

: H13-611_V4.5-ENU

Title

: HCIA-Storage V4.5

Version : V9.02

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1.SmartThin is a storage space management technology provided by Huawei OceanStor V3 storage system that allocates storage resources on demand. Based on virtualization technology, SmartThin reduces the deployment of physical storage resources and maximizes the utilization of storage space. A. True B. False Answer: A 2.Regarding the description of the hard disk domain in Huawei RAID 2.0+ technology, which of the following statement is incorrect? A. A hard disk domain is a group of hard disks B. A hard disk can only belong to one hard disk domain C. OceanStor V3 storage system can create one or more disk domains D. In a disk domain, disks of the same type must be of the same size and rotational speed Answer: D 3.Huawei OceanStor V3 SmartTier feature can be used to place data on the specified disk type. A. True B. False Answer: A 4.A certain bank will launch a set of business systems, which have very high performance and security requirements. The database uses an Oracle database and plans to deploy the Oracle database to a storage system. Then, when creating a RAID group for the Oracle database, the optimal RAID strategy should be: A. RAID 1 B. RAID 5 C. RAID 6 D. RAID 10 Answer: D 5.The SCSI protocol can be used not only for the communication between the host and the disk, but also for the communication between hosts, physical tape libraries, and optical disks, etc. A. True B. False Answer: A 6.In the Huawei OceanStor V3 storage system, a customer plans to deploy a business system. The database uses Oracle data. The average data block size is 16KB. When using the Smart Tier feature, which of the following data migration granularity is the best? A. 512KB B. 4MB C. 32MB D. 64MB Answer: A 2 / 137

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7.Which one of the following methods can achieve the RTO optimization? A. Disk-disk B. Disk-disk-tape C. Remote replication D. Virtual tape library Answer: C 8.In Huawei OceanStor V3, what unit does Thick LUN apply for space from the storage system? A. grain B. chunk C. stripe D. extent Answer: D 9.Most of the data generated by the Internet industry is structured data, and this part of the data accounts for about 80% of the total amount of data. A. True B. False Answer: B 10.The following are two statements about cloud computing: Statement 1: A deployment model of cloud computing is to divide a large physical server into multiple small virtual machines. Statement 2: A deployment model of cloud computing is to aggregate multiple small physical servers into one large host. A. Both Statement 1 and Statement 2 are correct B. Statement 1 is correct, Statement 2 is wrong C. Statement 1 is wrong, Statement 2 is correct D. Both Statement 1 and Statement 2 are wrong Answer: A 11.Multipath software can only be used in IP-SAN. A. True B. False Answer: B 12.In Huawei OceanStor V3 based on RAID 2.0+, when a user creates a file system, the system will first automatically create a corresponding LUN and generate a file system on the LUN. A. True B. False Answer: B 13.A company belongs to the fields of banking and finance, with a large amount of business data and high 3 / 137

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security requirements. Which RAID level is suitable for this company? A. RAIDO B. RAID 1 C. RAID 5 D. RAID 10 Answer: D 14.When there are bad sectors or bad blocks on the hard disk, which reconstruction method is used? A. Whole disk reconstruction B. Local Remeshing C. Restoration reconfiguration D. Local remodeling Answer: B 15.Regarding the snapshot technology, which of the following statement is incorrect? A. When rolling back a file system snapshot, you must cancel the shared mount of the source file system B. After opening multiple snapshots of the same file system, roll back to one of the snapshots. After the roll-back is completed, all snapshots after the point-in-time when the target snapshot was created will be deleted C. When manually creating a snapshot for a file system, if the product specification limit is exceeded, a new snapshot cannot be created for the file system D. When creating a periodic snapshot for the file system, the storage system automatically deletes the earliest created snapshot and automatically generates a new snapshot Answer: D 16.For random accessing to mechanical disks, the biggest impact on the time taken to complete an IO is: A. Seek time B. Rotation delay C. Data transfer time Answer: A 17.The InfiniBand interface is used as a front-end host interface in Huawei OceanStor V3 unified storage, which can flexibly support the direct connection and multiple networking modes of switch. A. True B. False Answer: B 18.The hard disk domain supports online adding hard disks, and the storage pool supports online expansion. A. True B. False Answer: A 19.Which one of the following operations is a daily maintenance item in the data center storage? 4 / 137

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A. View and handle alarms B. Inspect storage devices C. Check the room environment D. Check the internal environment of the rack Answer: A 20.Statement 1: Hyper Mirror one LUN failure, the host business is not interrupted, Hyper Clone primary LUN failure, the host business is interrupted. Statement 2: Hyper Mirror supports dual copy, and Hyper Clone supports a maximum of 1 primary LUN: 16 secondary LUNs. A. Statement 1 is correct, Statement 2 is correct B. Statement 1 is correct, Statement 2 is wrong C. Statement 1 is wrong, Statement 2 is correct D. Statement 1 is wrong, Statement 2 is wrong Answer: B 21.HA (High Availability) refers to the ability to continue to access applications in the event of a single component failure of the local system. In a data center, the downtime is one hour in a year. What is the HA of this data center? A. 0.99999 B. 0.9998858 C. 0.999999 D. 0.998934 Answer: B 22.In the backup system, the data that needs to be backed up must pass through the media server before being stored in the backup media. A. True B. False Answer: A 23.The process of regenerating all user data and parity data on the failed disk in the mirror array or RAID array is called: A. Recalculation B. Refactoring C. Hot backup D. Recovery Answer: B 24.Due to the earthquake, a company's IT system went down at 16:00 on November 11 leading to a business halt. By 23:00 on the same day, the IT system resumed operation and the data at 12:00 of that day can be restored. Then what respectively are the RTO and the RPO?

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A. RTO=4 hours, RPO=7 hours B. RTO=7 hours, RPO=4 hours C. RTO=2 hours, RPO=4 hours D. RTO=7 hours, RPO=3 hours Answer: B 25.A company needs to make a backup strategy. The company has a small amount of backup data and hopes to back up in a short time and save storage space to the utmost extent. Which type of backup do you recommend? A. Full backup B. Cumulative incremental backup C. Differential incremental backup Answer: C 26.A bank needs to ensure data security and use it to transfer large databases. Which storage network architecture is suitable for this bank? A. IP SAN B. FC SAN C. DAS D. NAS Answer: B 27.Xiao Wang, an employee of a company, serves as the administrator of the company's storage system. When he uses two sets of OceanStor5500 V3 as a disaster recovery solution, he only needs one of the OceanStor5500 V3 configuration data to remote replication software. A. True B. False Answer: B 28.A user of a company can automatically report the alarms of connected storage devices to the Huawei Service Support Center through a piece of management software. So, which software is this user using? A. Device Manager 6 / 137

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B. CLI management interface C. Toolkit D. eService Answer: D 29.When the Windows copy program copies local files to the file system, the file system block size of the Huawei OceanStor V3 storage system is the default, which ensures the full use of storage space. A. True B. False Answer: B 30.The Smart Cache feature in Huawei OceanStor V3 series products can only improve read performance, not write performance. A. True B. False Answer: A 31.What is the synchronization cycle time limit for asynchronous remote replication? A. 1s~144min B. 3s~144min C. 1s~300min D. 3s~300min Answer: B 32.Among the components of the mechanical disk, the components responsible for reading and writing data are: A. Disk B. Read/write head C. Head arm D. Spindle Answer: B 33.LAN Free and Server Free are the backup networking modes that have little impact on host performance. A. True B. False Answer: A 34.Regarding database-level disaster recovery, which of the following statement is wrong? A. Database-level disaster recovery technology is a disaster recovery solution designed for fixed databases. B. Database-level disaster recovery supports WAN, but requires separate hardware support. C. Database-level disaster recovery is mainly achieved by transmitting data logs and replaying them at the disaster recovery site. 7 / 137

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D. Database-level disaster recovery, more data will be lost in asynchronous mode, at least one log file will be lost. Answer: B 35.Which of the following statements corresponding to RAID 5 and RAID 10 are correct?

A. The sequential read performance of RAID 5 is lower than that of RAID 10. B. With sufficient front-end pressure, the sequential write performance of RAID 5 is higher than that of RAID 10. C. The random read performance of RAID 5 is lower than that of RAID 10. D. The random write performance of RAID 5 is higher than that of RAID 10. Answer: B 36.Xiao Wang, an employee of a small company, uses the CIFS protocol to access shared files on the Linux application server supported by his company's storage system. A. True B. False Answer: B 37.Regarding the common protocols used by the storage, which of the following statement is correct? A. ATA protocol uses parallel interface, which can only be used internally, and there are requirements for cable length. B. SCSI protocol does not support hot plug. C. A SAS domain can connect 15 devices. D. FC protocol compatibility is good, long transmission distance. Answer: A 38.Regarding data-level, application-level, and business-level disaster recovery, which of the following statements is correct? 8 / 137

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A. Regarding RTO, data-level create LUN -> add mapping B. Create storage pool -> add mapping -> create LUN C. Create LUN->Create Storage Pool->Add Mapping D. Create LUN->Add Mapping->Create Storage Pool Answer: A 109.The x86 architecture is a type of data center infrastructure. A. True B. False Answer: A 110.During the period when the disk cannot be accessed, when writing to the disk, which refactoring method is used? A. Full-disk refactoring 21 / 137

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B. Partial refactoring C. Restoration reconfiguration D. Local refactoring Answer: C 111.Backup is concerned with data recoverability, and disaster recovery is concerned with business continuity. A. True B. False Answer: A 112.Which of the following statements of RAID 1 is incorrect? A. RAID 1 writes data to each member disk, and the data on each member disk is the same B. RAID 1 uses X OR algorithm to check C. Normally, RAID 1 reads data from the data disk and the mirror disk D. When the data of some member disks is damaged, RAID 1 allows it to quickly recover data from other member disks Answer: B 113.OceanStor 5300V 3 is a dual-controller converged storage product. It must be ensured that the working controller of the LUN is consistent with the owning controller. A. True B. False Answer: B 114.The synchronous remote replication management module RM is software. A. True B. False Answer: A 115.The RTO=0 and RPO=0 of the disaster recovery center in the same city. A. True B. False Answer: A 116.Which of the following statement about the three iSCSI connection methods is correct? A. The connection method of Ethernet card+initiator software does not occupy host resources at all B. The connection method of hardware TOE network card+initiator software reduces the pressure on host resources C. The iSCSI HBA card completes the TCP/IP protocol conversion without occupying host resources at all D. TOE network card completes the conversion of iSCSI packets to TCP/IP packets Answer: B 117.Statement 1: NAS file system is managed by storage or server that provides resources. 22 / 137

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Statement 2: The file system of the SAN is managed by the host itself. A. Statement 1 is correct, Statement 2 is correct B. Statement 1 is correct, Statement 2 is wrong C. Statement 1 is wrong, Statement 2 is correct D. Statement 1 is wrong, Statement 2 is wrong Answer: A 118.Snapshots used for backup purposes should be set to read-only to prevent being modified by other applications and affecting the consistency of backup data. A. True B. False Answer: A 119.There are twos statements of fiber optic switches below, which is correct? Statement 1: A port can be in multiple zones. Statement 2: A switch can have multiple zones. A. Both Statement 1 and Statement 2 are correct B. Statement 1 is correct, Statement 2 is wrong C. Statement 1 is wrong, Statement 2 is correct D. Both Statement 1 and Statement 2 are wrong Answer: A 120.The cloud data center virtualizes storage, computing and network resources, and provides a virtualization platform for users to use. A. True B. False Answer: A 121.Which of the following operations should be done by employee A of a bank in the first maintenance project of data center storage? 1. Check Toolkit installation 2. Check eService installation and configuration 3. Check the alarm policy configuration A. 12 B. 123 C. 3 Answer: B 122.The amount of data backed up by incremental backup is greater than that of differential backup. A. True B. False Answer: B 123.Which one of the following statements is correct? 23 / 137

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A. The available space of 6 200G hard disks as RAID 5 is 1200G B. NLS AS/SATA hard disks are suitable for data protection using RAID 6 and SAS hard disks are suitable for data protection using RAID 5 C. S2200V 3 can support SSD, SAS, SATA hard drives D. OceanStor V3 series products support RAIDO/RAID 1/RAID 5/RAID 10, but not RAID 6 Answer: B 124.The initial capacity allocation strategy of the Huawei OceanStor V3 storage system defaults to automatic allocation. A. True B. False Answer: A 125.Statement 1: ICT infrastructure should be built with high-end equipment with high reliability, so there is no need to establish a backup. Statement 2: Servers are usually used to refer to computers with higher specifications in some enterprises. These computers usually install some important software in the enterprise, run important business. A. Both Statement 1 and Statement 2 are correct B. Statement 1 is correct Statement 2 is wrong C. Statement 1 is wrong, Statement 2 is correct D. Both Statement 1 and Statement 2 are wrong Answer: C 126.A company uses the CIFS protocol for file sharing, and uses the Homedir sharing method in accordance with the security policy to provide all users with space for accessing folders and writing. A. True B. False Answer: A 127.There are two statements about backups below, which is correct? Statement 1: The retention period refers to the time it takes to backup. Statement 2: Incremental backup takes the longest time among the three backup types. A. Statement 1 and 2 are both correct B. Statement 1 is correct, Statement 2 is wrong C. Statement 1 is wrong, Statement 2 is correct D. Statements 1 and 2 are both wrong Answer: D 128.In the Huawei OceanStor V3 storage system, which of the following statement of Smart Thin LUN is correct? A. When creating a thin LUN, it cannot be allocated a capacity larger than the free space available in the storage pool. B. Thin LUN cannot be converted to Thick LUN C. You can create a Thin LUN without specifying the initial capacity allocation 24 / 137

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D. The types of LUNs in a storage pool must be the same, either all thin LUNs or thick LUNs Answer: C 129.There are two statements about backups as follows: Statement 1: The data backed up on the tape can be used for data recovery at any time, but only the historical data at the time of the backup can be recovered, not the data at the time of the failure. Statement 2: Using tape as the backup medium is the highest RTO backup method. A. Statement 1 is correct, Statement 2 is correct B. Statement 1 is correct, Statement 2 is wrong C. Statement 1 is wrong, Statement 2 is correct D. Statement 1 is wrong, Statement 2 is wrong Answer: A 130.Which one of the following transmission protocols can be used without the switch? A. iSCSI protocol B. SCSI protocol C. FC protocol D. FCoE protocol Answer: B 131.iSCSI encapsulates SCSI commands and data description blocks into the iSCSI protocol. A. True B. False Answer: A 132.The advantages of SAN for NAS unified storage do not include: A. Users do not need to separately plan SAN and NAS storage capacity B. Users can freely allocate storage to meet the needs of the application environment C. Users do not need to care about the capacity utilization issues related to data block and file storage support D. Users can realize the functions of NAS by buying a set of SAN Answer: A 133.If a company's business is to write large-scale data randomly into LUNs, which initial capacity allocation strategy and which data migration strategy are recommended? A. Automatic allocation: migration to low-performance tier B. Priority allocation from the high-performance tier: migration to the low-performance tier C. Priority allocation from the low-performance tier: migration to the high-performance tier D. Priority allocation from the capacity tier: automatic migration Answer: D 134.The SATA connector can support both SATA and SAS hard disks at the same time. A. True B. False 25 / 137

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Answer: B 135.In the bank's bill imaging system, structured data is often stored on the SAN array, and unstructured data is stored on the NAS array. A. True B. False Answer: A 136.Description 1: The data recovery of the snapshot depends on the source data. If the source data is physically damaged, it cannot be recovered. In this case, the clone can still recover the source data. Description 2: After the source data is damaged, LUN copy must make a complete copy of the backup data to restore the source data. The clone only needs to restore the damaged data, which greatly shortens the recovery time. -Snapshot: The data recovery of a snapshot depends on the source data. If the source data is physically damaged, it cannot be recovered. In this case, the clone can still recover the source data. -LUN copy: After the source data is damaged, LUN copy must make a complete copy of the backup data to restore the source data. The clone only needs to restore the damaged data (incremental copy), which greatly reduces the recovery time. -Remote replication: Remote replication can only protect data between storage devices. The hardware cost is high, and the remote link bandwidth is usually low, and the data recovery time is long. The cloning can realize data protection in the storage device, which can effectively save expenses and shorten the data recovery time. A. Description 1 is correct, description 2 is correct B. Description 1 is correct, description 2 is wrong C. Description 1 is wrong, description 2 is correct D. Description 1 is wrong, description 2 is wrong Answer: A 137.The number of erasable times of the storage medium cell of the SSD disk is limited. Multiple erasing and writing cause the wear of the SSD, which also makes the service life of the SSD limited. This limit is related to the specific number of erasing and writing. Answer: A 138.The NAS engine and the storage unit are interconnected by an Ethernet switch. A. True B. False Answer: B 139.In the FC protocol, which layer is responsible for encoding and decoding?

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A. FC-0 B. FC-1 C. FC-2 D. FC-3 Answer: B 140.Which of the following descriptions about disaster recovery is wrong? A. Regardless of whether disaster recovery or backup solutions are used, the data of disaster recovery is unavoidable compared with the data at the time of system failure. B. After the disaster, I hope to be able to access the backup on the remote device immediately C. The restored data hope to meet the current work requirements immediately D. The traditional use of software for data backup still has usage scenarios Answer: A 141.Regarding the high reliability and cross-data center disaster recovery methods in the data center under the traditional mode and cloud computing mode, which of the following is wrong? A. In the traditional mode, the data center relies on component redundancy to achieve high reliability B. In the cloud computing mode, the data center relies on component redundancy to achieve high reliability C. Under the traditional model, cross-data center disaster recovery is mainly based on copying business data, and the recovery process is complicated and the recovery period is long. D. In the cloud computing model, cross-data center disaster recovery is all the data replication of business data and operating environment. The integrated management and recovery process is simple and the recovery period is short. Answer: B 142.Regarding the four disaster recovery modes of active-active, hot standby, warm standby, and cold standby, which of the following statements is wrong? A. Active-active technology can realize that both the active and standby data centers provide external services. During normal operation, the services of the two data centers can be load-shared based on weights. There is no distinction between active and standby. They respond to some users separately. The weights can be divided by region, data center service capacity or external bandwidth B. Warm backup technology, when a data center failure causes the service to be unavailable, the service 27 / 137

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can be automatically switched to the backup data center within the specified RTO time C. The hot standby service is responded by the main data center. When the service is unavailable due to a data center failure, the service can be automatically switched to the backup data center within the specified RTO time D. The biggest feature of Multi Live is that it will not cause waste of data center resources, and data centers all carry application services. Answer: B 143.The SCSI protocol is the basic protocol for communication between the host and the disk. It is operated by the SCSI controller. The controller is equivalent to a small CPU with its own command set and cache. A. True B. False Answer: A 144.Which of the following different types of SSD disks have the lowest price per unit capacity? A. SLC B. eMLC C. cMLC D. TLC Answer: D 145.Dual-controller storage systems generally contain mirroring channels, and data written to the storage system's Cache will be written to the peer controller through the mirroring channel. A. True B. False Answer: A 146.After employee A of a company logs in to the storage device of the company system, he finds that he has certain control rights. However, the system time cannot be modified, and user management cannot be performed. Excuse me, which of the following roles does employee A have? A. Super Administrator B. Administrator C. Ordinary users D. Read-only users Answer: B 147.A company is mainly used for file system sharing in Linux, UNIX, MacOS and VMware operating system environments. Which of the following file access protocols is suitable for this company? A. NFS B. CIFS C. Telnet D. HTTP Answer: A 28 / 137

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148.Which of the following descriptions of NAS is correct? Description 1: NAS is always based on file sharing. Description 2: The distance of the network connection affects the performance of the NAS. A. Both description 1 and description 2 are correct. B. Description 1 is correct, description 2 is wrong C. Description 1 is wrong, description 2 is correct D. Both description 1 and description 2 are wrong Answer: A 149.Remote replication requires that the primary and secondary storage are from the same manufacturer. A. True B. False Answer: A 150.In Huawei RAID 2.0+, when the hot spare strategy of a certain storage layer is low, which of the following descriptions about the capacity of the hot spare space reserved by the system for this layer is wrong? A. When the total number of hard disks in this layer is 10, the capacity equivalent to 1 hard disk is reserved B. When the total number of hard disks in this layer is 12, the capacity equivalent to 1 hard disk is reserved C. When the total number of hard disks in this layer is 20, the capacity equivalent to 2 hard disk is reserved D. When the total number of hard disks in this layer is 48, the capacity equivalent to 2 hard disk is reserved Answer: C 151.SCSI communication is initiated by the initiator, received and processed by the target. When the host communicates with the storage device, the storage device side assumes the role of the initiator. A. True B. False Answer: A 152.When does data become information? A. When it has been stored in the correct file format B. When the data has been stored in digital form C. When the company understands the meaning of the data and extracts the content needed for decision-making from it D. When the data has been verified to be correct Answer: C 153.When Ultra Path is installed on the application server, the operating system can automatically identify the LUN mapped to the host without restarting the host. 29 / 137

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A. True B. False Answer: A 154.Which of the following descriptions of the relationship between the FC protocol and the SCSI protocol is wrong? A. FC can transmit SCSI commands, data and status information units by constructing frames B. FC or iSCSI protocol is used to carry SCSI protocol, which is an extension of SCSI protocol C. SCSI is the upper layer protocol of FC 4, SCSI is a subset of FC protocol D. FC is an alternative to SCSI Answer: D 155.A government unit adopts Huawei's two-location three-center solution for disaster recovery construction, and its business is mainly concentrated from 8:00 to 18:00. Which of the following is wrong? A. The production center and the remote disaster recovery center should adopt synchronous remote replication B. The time period for data synchronization between the production center and the disaster recovery center should be selected at night when the business volume is small C. When doing remote replication, a consistency group should be created according to the business of the unit, and related businesses should be placed in a consistent group D. The BC Manager software can be used to set the data synchronization period Answer: A 156.In RAID 2.0+, the administrator needs to manually set and specify which hard disks are used as hot spare disks. A. True B. False Answer: B 157.The difference between DAS and SAN, which of the following descriptions is wrong? A. SAN redundant networking provides higher reliability B. DAS and SAN are both external storage, so storage resource sharing can be easily realized C. DAS is suitable for small and medium LAN environments with only a few servers D. SAN is suitable for medium and high-end storage application environments, such as critical databases, centralized storage, large-scale storage, backup and disaster recovery scenarios Answer: B 158.The steps of asynchronous remote replication technology at multiple points in time. Which of the following statements is correct? (1) A new time slice (T2, P2) is generated in the cache of the primary LUN and the secondary LUN when each replication cycle starts (2) The data newly written by the host is cached in the time slice T2 of the main LUN Cache, and the response host is completed (3) The data received by the master and slave LUN will be downloaded to disk respectively 30 / 137

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(4) Copy the data of time slice T1 directly to the slave LUN, and write it into the time slice P2 of the slave LUN A. (1) (2) (3) (4) B. (1) (3) (2) (4) C. (1) (2) (4) (3) D. (2) (1) (4) (3) Answer: C 159.Which of the following descriptions is correct? Description 1: LUN is composed of multiple Extents in the storage pool. Description 2: LUN can contain one or more types of Extent. A. Description 1 is correct, description 2 is correct B. Description 1 is correct, description 2 is wrong C. Description 1 is wrong, description 2 is correct D. Description 1 is wrong, description 2 is wrong Answer: A 160.In the Huawei OceanStor storage device, the coffer disk is an optional configuration because the write cache has a mirror image and there is backup power supply to power the controller. A. True B. False Answer: B 161.The QoS of the file system supports IO priority configuration and also supports policy configuration. A. True B. False Answer: A 162.In disaster recovery applications, the HyperMirror function (remote data replication) can only be performed between two OceanStor 5300 V3, and cannot be performed between OceanStor 5500 V3 and OceanStor 5300 V3. A. True B. False Answer: B 163.In the RHEL5 operating system, which command is used to mount the sdb5 device in the dev directory to the sdb 5 directory in the mnt directory? A. cat/dev/sdb 5/mmt/sdb 5 B. In/dev/sdb 5/mnt/sdb 5 C. mount/dev/sdb 5/mnt/sdb 5 D. df/dev/sdb5mnt/sdb 5 Answer: C 164.Distributed object storage has a unified name space and supports online expansion. 31 / 137

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A. True B. False Answer: A 165.The CoE protocol means to encapsulate the FC protocol into TCP/IP protocol package and transmit it on the Ethernet. A. True B. False Answer: B 166.For a system with high business continuity, the RPO and RTO values should have which of the following characteristics? A. RPO is higher, RTO is lower B. RPO is lower, RTO is higher C. RPO and RTO are both lower D. RPO and RTO are both higher Answer: C 167.Huawei focuses on IT infrastructure in the ICT field. A. True B. False Answer: A 168.In Huawei RAID 2.0+, which is the correct description of chunck and extent? A. Chunck is the smallest unit for LUN to apply for and release space from the storage pool B. Extent is the smallest unit for the storage pool to allocate resources from the hard disk domain C. Chunck is the smallest unit of hot data statistics and migration D. The extent size of different storage pools can be different, but the extent size in the same storage pool is uniform Answer: D 169.Regarding Huawei's OceanStor V3 storage dynamic tiered storage technology, which of the following descriptions is wrong? A. Smart Tier calculates and analyzes the activity of the data to determine the activity level of the data B. Smart Tier automatically and dynamically moves data to storage media of different performance according to the different activity levels of the data C. Smart Tier data movement based on configuration data migration strategy D. Data statistics, analysis and data migration of Smart Tier features will affect business continuity and data availability Answer: D 170.Description 1: The CIFS share provided by a company's storage system is a public directory, and all users with permissions can access it. Description 2: A company's storage system sets up Homedir sharing so that different users can only 32 / 137

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access private directories with the same user name. A. Description 1 is correct, description 2 is wrong B. Description 1 is wrong, description 2 is wrong C. Description 1 is correct, description 2 is correct D. Description 1 is wrong, description 2 is correct Answer: C 171.Backup is to copy and save data or system. Once an error or disaster occurs, these backups can be used to restore system data and restore business to a normal operating state. A. True B. False Answer: A 172.Incremental backups must rely on the last full backup and the last incremental backup to fully restore the data during data restoration. Data reconstruction during restoration is slower than a full backup, and the restoration window is larger. A. True B. False Answer: A 173.An enterprise needs to purchase backup media for data backup. It must inherit the enterprise's original tape backup structure and strategy and increase the backup speed. What kind of backup media does this company buy? A. Disk array B. Virtual tape library C. Tape library D. CD Tower Answer: B 174.Which of the following descriptions about DAS is wrong? A. DAS is a designated storage device directly connected to the server that uses them. B. DAS is divided into internal DAS and external DAS C. The hard disk inside the server is not DAS D. External DAS can be connected to the server that accesses them through FC protocol or SCSI protocol. Answer: C 175.The RTO in the metrics for disaster recovery systems refers to the point in time target requirements at which the system and data must be restored after a disaster occurs. A. True B. False Answer: B 176.Which of the following two descriptions is correct? 33 / 137

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Description 1: The maintenance cost of traditional PC is usually lower than that of a desktop cloud. Description 2: In cloud computing, data is stored and managed centrally. A. Both descriptions 1 and 2 are correct B. Description 1 is correct, description 2 is wrong C. Description 1 is wrong, description is correct D. Both descriptions 1 and 2 are wrong Answer: C 177.For the data stored on the media, there is no situation that requires physical shredding or destruction like data recorded on paper. A. True B. False Answer: B 178.Create a Thin LUN on Huawei OceanStor V3 with a capacity of 100G and an initial allocated capacity of 10G. After the LUN is mapped to the Windows 2012 host, the corresponding disk is scanned on the host. The displayed capacity of the disk should be 10G. A. True B. False Answer: B 179.FTP is a very secure protocol, there is no security risk. A. True B. False Answer: B 180.When the RTO requirement is within 10 minutes, the traditional tape backup method is not recommended. A. True B. False Answer: A 181.When the RPO time requirement is at the minute level, the traditional tape backup method can be used. A. True B. False Answer: B 182.Which ports in the FC switch can communicate with each other is determined by the zone. A. True B. False Answer: A 183.A device has only one WWNN number, but it can have multiple WWPN numbers. 34 / 137

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A. True B. False Answer: A 184.Deduplication and compression can only be enabled for Thin LUN. A. True B. False Answer: A 185.Which of the following RAID levels has the lowest hard disk space utilization? A. RAID 0 B. RAID 1 C. RAID 3 D. RAID 5 Answer: B 186.Which of the following operating systems can access CIFS shares without installing additional software? A. Win 7 B. Solaris C. FreeBSD D. AIX Answer: A 187.Which of the following two descriptions is correct? Description 1: Synchronous remote replication. When the primary storage fails, the amount of data loss can be zero. Description 2: When the host is a Linux-based file system, asynchronous remote replication must be used. A. Both description 1 and description 2 are correct B. Description 1 is right, description 2 is wrong C. Description 1 is wrong, description 2 is correct D. Both description 1 and description 2 are wrong Answer: B 188.Which of the following is not an IP SAN component? A. Storage devices with iSCSI interface B. Twisted pair C. NIC D. FC switch Answer: D 189.DAS is a storage architecture without scalability. A. True 35 / 137

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B. False Answer: A 190.Which of the sequence of the overall reconstruction process is correct? 1. Query all CKG with CK falling on the faulty disk 2. Allocate hot spare CK to all these CKG 3. Update the CKG information to release the reconstructed CK 4. Write the reconstructed data to the hot standby CK 5. Through the RAID algorithm, Calculate the data on the failed disk based on the data on the normal disk and the check disk A. 1->2->5->4->3 B. 1->2->3->5->4 C. 5->1->2->3->4 D. 5->2->1->4->3 Answer: A 191.The RPO in the disaster recovery system measurement indicators is used to measure the business recovery capability of the disaster recovery system A. True B. False Answer: A 192.Which of the following options are not the constituent elements of the SAN architecture? A. Server B. Back-end storage system C. Switch D. Router Answer: D 193.A company uses Huawei's storage array to build a disaster recovery center and configures a remote replication consistency group on the Device Manager. Which of the following is wrong? A. Consistency groups can be created across arrays B. The number of remote replication replication pairs in a consistency group can be up to 8 C. Synchronous remote replication and asynchronous remote replication cannot be placed in the same consistency group D. All remote replication slave LUN must be located in a remote storage system Answer: A 194.Which of the following are not the advantages of cloud data centers? A. Use large servers to improve performance B. Virtualization improves resource utilization C. Distributed computing and storage improve system reliability D. Agree that resource management improves operation and maintenance efficiency Answer: A 36 / 137

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195.A company makes a complete data backup relative to the current business for salesperson inquiry and data mining. Which of the following can be used to end? A. Volume mirroring B. Snapshot C. Process replication D. Clone Answer: D 196.Unstructured data is stored in the database, and the realized data can be logically expressed in two-dimensional table structure A. True B. False Answer: B 197.Which of the following descriptions about RAID and LUN is wrong? A. A RAID group is like a physical volume containing many disks B. A LUN can be created on a RAID C. Multiple LUN can be created on a RAID D. A LUN can belong to multiple RAID groups Answer: D 198.The synchronization in the clone is to directly double write the master and slave LUN. A. True B. False Answer: A 199.In the NAS architecture environment, three hosts simultaneously read and write to a disk partition will bring about the problem of written data consistency. A. True B. False Answer: B 200.The address of the sector is also called the CHS address, and the addressing sequence is? A. Cylinder-head-sector B. Cylinder-sector-head C. Sector-head-cylinder D. head-cylinder-sector Answer: A 201.Which of the following storage system architectures has its own file system? A. DAS B. NAS C. FC SAN 37 / 137

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D. IPS AN Answer: B 202.In the OceanStor V3 storage system, the types of hard disks in the same hard disk domain must be the same A. True B. False Answer: A 203.CIFS share permissions from large to small are as follows: 1. "Prohibit", 2 "Read and Write" 3 "Full Control" 4 "Read Only" A. 1->2->3->4 B. 3->4->2->1 C. 1->3->2->4 D. 2->1->4->3 Answer: B 204.NFS has high asynchronous write performance, but if the client and storage system fail at the same time, there may be a risk of data loss. A. True B. False Answer: A 205.If the GE network uses the required bandwidth calculation formula to get