EMT Practice Test

1. Question Content...

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Question1: A storage engineer in an enterprise needs to back up 800 GB of files. The backup solution requires a 4-hour backup window, GE network and 80% bandwidth usage.
If duplication is not considered, what is the required bandwidth?

Question2: Before planning the storage configuration, an engineer understands the business situation from the customer as follows:
1) For desktop cloud services, most terminals use Windows systems, and a few R&D test terminals use Linux systems;
2) For online transaction business, front-end transactions require fast database response, and database LUNs are stored in storage;
3) The e-commerce website business adopts server virtualization, the virtual machine image is stored in the storage, and the website load is 50%;
4) The NAS service provides common file sharing access to the desktop cloud.
Which of the above businesses is recommended to use the rebooking feature? (Multiple Choice)

Question3: A company plans to use remote replication for data protection between site A and site B. 32 GB production, data needs to be replicated from site A to site B within 2 hours, and the bandwidth usage is about 80%. For bandwidth between two sites (without considering duplication and compression), 15 Mbit/s is the best choice.

Question4: Customer replaces legacy storage based on volume migration. What parts need to be checked and verified before the official launch of the business? (Multiple Choice)

Question5: Which of the following are the key technologies designed by Flashlink for the characteristics of flash media? (Multiple Choice)

Question6: In the solution of three centers in two places, considering reducing the impact on the performance of the data center, it is necessary to adopt _________ replication networking.

Question7: A securities company, in order to ensure business continuity, plans to establish a disaster recovery structure with three centers in two places. It is designed to ensure that services can be quickly switched in the disaster recovery center in the event of a circuit failure or fire in the production center, so as to maximize the protection of business. continuous operation of the system. At present, the company has deployed a production data center, an intra-city disaster recovery center and a remote disaster recovery center. The general situation is as follows.
1) A production center: Windows/linux operating system, database, etc.,
2) Disaster recovery center in the same city in location A: 100 KM away from the production center;
3) C remote disaster recovery center: 1000 KM away from the production center.
The customer requires RPO=0, RTO=0 between data centers in the same city, and the remote disaster recovery center is used as the data-level disaster recovery center, and the data recovery RPO is less than 10 minutes.
Which of the following statements about the construction of three centers in two places in the project is correct? (Multiple Choice)

Question8: The deployment process of the disaster recovery system in Huawei's active and standby disaster recovery solution is:
1. Solution networking
2. Synchronize data to the disaster recovery terminal
3. Deploy the disaster recovery management server on the disaster recovery terminal
4. Configure protection groups and recovery plans
5. Acceptance test

Question9: Which of the following functions does the eService LLDesigner tool include? (Multiple Choice)

Question10: A bank deploys two sets of Huawei all-flash storage. Storage A is deployed in the production center, and storage B is deployed in the disaster recovery center. The planning information is as follows:
(1) The business data, logs and modification information of the transaction system database are stored in LUNO1, LUNO2 and LUNO3 of storage A respectively;
(2) When storage A and storage B establish a remote replication relationship, add the remote replication pair of LUNO1, LUNO2, and LUNO3 to the consistency group.
During the process OF data synchronization, the remote replication task of LUNO2 fails.
The consistency group will immediately stop the remote replication tasks for LUNO1 and LUNO3.

Question11: Common backup types are full backup, ( ) and differential incremental backup.

Question12: HyperCDP can generate more and denser recovery points for data on storage devices. HyperCDP copy is a full copy backup of source data at a certain point in time.

Question13: Which of the following drift groups does Huawei all-flash storage system automatically add all Ethernet ports and bonded ports in the cluster to?

Question14: An operation and maintenance engineer found a storage device alarm in the process of daily inspection and needed to perform rapid maintenance. Which of the following is wrong?

Question15: An employee of a company, Xiao Wang, performed the following operations in the company's storage system: 9:00 Snapshot and activated LUNA, 10:00 modified all data on the snapshot LUN and source LUN, and 11:00 restored the snapshot. roll.
Which of the following statements are correct? (Multiple Choice)

Question16: After a disaster occurs, the time required for an information system or business function to recover from a standstill is generally used ( ).

Question17: In order to improve the business performance of storage devices, which of the following front-end networking solutions should be recommended?

Question18: Which of the following description about the SmartMigration feature is correct ? (Multiple Choice)

Question19: In the synchronous replication scenario, the peak write bandwidth of an application is 16MB/s, the average of write bandwidth is 500KB/s, the average write IO size is 8KB, the overhead of private information is about 11%, and the bandwidth utilization rate is 80%. The disaster network bandwidth should not be less than?

Question20: Which of the following types of LUNs can the SmartErase feature be applied to?

Question21: Which of the following is wrong in the description of the file system snapshot feature of Huawei OceanStor hybrid flash storage?

Question22: A company's business host runs the Linux operating system (take CentOS as an example). The storage engineer needs to use the Linux system performance monitoring tool in the process of collecting performance data. Which of the following is wrong?

Question23: A company purchases 2 sets of Huawei all-flash storage devices for deploying database services, which are respectively deployed in data center A and data center B in city M. And complete the active-active disaster recovery configuration.
Which of the following failures will cause business interruption?

Question24: A company A purchased a set of Huawei hybrid flash storage devices. Before installation and deployment, engineers used the networking assistant on Huawei's official website to plan and design the network. Through the storage networking assistant, you can obtain not only the networking diagram of the storage device, but also the networking diagram between the storage device and the application host.

Question25: The HyperMetro feature cooperates with Huawei's UltraPath multipath software, which of the following I/O access modes are provided based on the deployment distance of active-active sites? (Multiple Choice)

Question26: Huawei's hybrid flash storage supports the integration of NAS and SAN. The software protocol stacks of the two are completely parallel, and they are integrated in the resource allocation and management planes.

Question27: Which of the following statement about the storage system tuning process is incorrect?

Question28: An enterprise plans to build a 3DC architecture on HUAWEI CLOUD. Customers need cross-region DR to avoid service interruption and 0 RPO. Technicians provide cloud-based 3DC solutions, including Storage Disaster Recovery Services (SDRS) and Cloud Backup and Recovery (CBR). Production center X and DR center Y are constructed in Zone A 1 and AZ2, and remote DR center Z is constructed in Zone B. DR requirements of zero RPO and zero RTO can be met between data centers X and Z.

Question29: When doing the main and standby disaster recovery design, which of the following description of the slave side is correct?

Question30: Company W newly purchased two sets of storage devices for the configuration of active-active. The storage device is Huawei all-flash storage, the host operating system is Linux, deployed on physical servers, and the multi-path software adopts Huawei UtraPath.
When engineers configure multipath software, which of the following operations are correct? (Multiple Choice)

Question31: The distance between two computer rooms in the data center is 2 kilometers. The storage in computer room A and the storage device in computer room B need to be configured with remote replication. The two storage rooms can be directly connected by optical fibers without going through a switch.

Question32: Game live broadcast platform A uses Huawei's all-flash storage FlashLink many-core technology to protect its business. Regarding the many-core technology involved, which of the following describes the scenario of partitioning by CPU in the controller?

Question33: Which of the following statements are true about Huawei hybrid flash storage? (Multiple Choice)

Question34: M Company plans to build a remote disaster recovery center with a disaster recovery distance of 1000KM. The company's daily business growth is 2GB, the data synchronization time is up to 8 hours a day, and the bandwidth utilization rate is about 70%. In this scenario, what is the minimum remote replication network bandwidth to meet the requirements?

Question35: Regarding the protocol layer of Huawei's distributed storage products, which of the following statements is wrong?

Question36: After employee A of a company logs in to the storage device of the company system, he finds that he has certain control authority. But cannot modify the system time, and cannot carry out user management.
Excuse me, which of the following roles does employee A have permissions?

Question37: Huawei Scale-Out File Storage is a scale-out file storage system for massive unstructured data storage applications. Which of the following options is the feature of this product? (Multiple Choice)

Question38: An enterprise has established active-active data centers in city A and city B.
If the active-active arbitration mode of storage (such as Huawei OceanStor hybrid flash memory) is static priority mode, site A is a static priority site. Which of the following descriptions are correct? (Multiple Choice)

Question39: Huawei distributed storage block storage provides volume hot migration capability

Question40: SmartMatrix3.0 architecture is a multi-controller interconnection system architecture designed by Huawei for enterprise-level data center core storage systems. Based on the SmartMatrix3.0 principle, Huawei OceanStor 18000 can support clusters of up to 16 engines (32 controllers).

Question41: The Erasure code redundancy technology used in Huawei OceanStor 9000 supports higher reliability and more flexible redundancy strategies than traditional RAID algorithms. Which of the following is the wrong description of the principle of Erasure code MH?

Question42: Huawei Fusionstorage distributed block storage is used in a resource pooling scenario. The DHT architecture is used to distribute all metadata on each storage node according to rules, and there is no metadata access across nodes. The metadata bottleneck is completely avoided.

Question43: In the high-end storage intelligent matrix multi-controller architecture, which protocol between the multi-controllers implements the cache mirroring channel?

Question44: OceanStor 9000 provides directory-level snapshots. What are the application limitations of snapshots? (Multiple Choice)

Question45: Which of the following statements about WORM features are correct? (Multiple Choice)

Question46: To ensure data reliability, an enterprise establishes a remote replication pair between the primary LUN at site A and the secondary LDN at site B. Which of the following statements about the data relationship between the status of the pair and the primary and secondary LUNs is correct? (Multiple Choice)

Question47: In Huawei storage systems, the ( ) advanced feature can create a full data copy (that is, the target LUN) of the source LUN at a specific point in time (the time when synchronization is started), and the target LUN can be read and written immediately without waiting for the background copy to complete. . (Please fill in in English)

Question48: OceanStorDorad, to ensure stable delay, the controller identifies various I/O priorities.
Which of the following belong to the OceanStor Dorado I/O category? (Multiple Choice)

Question49: In Huawei hybrid flash memory, users need to mount file system snapshots to access snapshot data.

Question50: Engineer T found a storage optical module with a high bit error rate during the daily inspection of the column storage, and planned to replace an optical module. Which of the following descriptions are correct? (Multiple Choice)

Question51: Which of the following statements about the LUN copy or clone of Ocean Storage all-flash storage is correct?

Question52: Regarding the protocol used by the mirror channel between controllers of Huawei Oceanstor hybrid flash storage, which of the following statement is correct?

Question53: Due to the needs of business development, an enterprise plans to purchase Huawei all-flash storage equipment to replace the old storage and migrate the data from the old storage to the newly purchased storage equipment.
What risk points should Engineer A consider when conducting data migration day? (Multiple Choice)

Question54: F customer plans to purchase Huawei data protection all-in-one machine for data protection of the production system. The current business status of the customer is as follows: the peak time of the system business is from 9:00 to 18:00 on weekdays, and the customer requires the backup time to be minimized. The business data is massive small file, but the total capacity is large.
Based on this scenario, when using the Huawei Data Integrated Protector to formulate a backup strategy, which of the following statements is false?

Question55: Which of the following statements is wrong about the N+M:B data protection mode supported by OceanStor 9000?

Question56: A company purchased a set of Huawei hybrid flash storage. The current business information is as follows:
(1) Online transaction business: random write IO accounts for 80%;
(2) Online query business: sequential read IO ratio is 90%;
(3) Storage configuration SSD, SAS and NL-SAS three kinds of hard disks.
When storage engineers plan storage services, which of the following are reasonable? (Multiple Choice)

Question57: Customer M used Huawei storage products to build an active/standby disaster recovery system, requiring that services be migrated to the disaster recovery side after a service failure on the production side. After the production end is restored, you can manually switch back to the production end from the disaster recovery end. The incremental data of the disaster recovery end is synchronized back to the production end, and the production end resumes business. After the disaster recovery center is built, the disaster recovery function test needs to be carried out, and the test should not affect the production business. Which of the following statements about the customer's DR test is correct? (Multiple Choice)

Question58: Huawei's scale-out file storage adopts an asymmetric distributed architecture to provide users with unstructured data sharing resource storage. It is a scale-out file storage system for massive structured data storage applications.

Question59: Which of the following drivers is used when Huawei distributed storage block storage is connected to 0penStack?

Question60: In the OceanStor 9000 storage system, when InfoReplicator features master-slave switching, it supports automatic switching of quotas, sharing permissions, stripe size, directory redundancy ratio and other information.

Question61: The fault recovery of Huawei's active and standby disaster recovery solution means that when the production site fails, the production business is automatically switched to the disaster recovery site for operation.

Question62: Huawei all-flash storage systems can use the Meteor control technology of SmartQos to improve service performance. When a user sets a performance upper limit target for a SmartOoS policy, the system will allocate a certain number of ( ) according to the performance upper limit target, and implement flow control by controlling provisioning. .

Question63: What are the service groups that can be completed by all-flash storage? (Multiple Choice)

Question64: During synchronous remote replication, after the production storage receives the write request from the host, HyperReplication will write the request ( ) log.

Question65: Engineer A discovers that the storage is abnormal during routine inspections, and calls the Huawei technical support hotline for help. The technical support guides Engineer A to complete the collection of service host information.
The operating system of the business host is Linux, which of the following collected commands is wrong?

Question66: The Huawei OceanStor hybrid flash storage system used in a customer's business application has a total of three POOLs, all of which are 8D+1P RAID5. A business interruption occurred on a certain day, and engineers found some scenarios that caused the failure in the system by analyzing the logs.
Which of the following scenarios will cause the service interruption of host access to storage? (Multiple Choice)

Question67: The ________ system refers to the establishment of multiple sets of IT systems with the same functions in distant places, which can monitor the health status and switch functions between them.

Question68: The active-active of distributed storage block service supports incremental synchronization. When a site fails, according to the arbitration mechanism of the system, the site that wins the arbitration will provide services, and the TO request is changed from double-write to single-write. When the system at the faulty site is restored, it supports synchronizing the data changed during the failure to the rapid recovery system at the restored site.

Question69: When BCManager creates a protection group to set protection for a LUN, the LUN cannot be viewed on the interface. Which of the following may be the cause?

Question70: A bank plans to purchase a set of distributed storage and issue requirements to multiple storage device suppliers. The bank's storage engineer conducts industry comparisons and exchanges according to needs, determines the appropriate equipment technical standards, selects 3 suppliers for equipment testing, and finally outputs a report. This is an operation in the equipment selection stage.

Question71: In the SmartVirtualzation feature, eDevlun corresponds to external lun one by one, eDevlun is the external lun.

Question72: Regarding the file deduplication and compression feature of Huawei OceanStor hybrid flash storage, which of the following statements is false?

Question73: The international standard SHARE 78 divides the disaster recovery system into 7 levels. Which of the following technologies can be used for the sixth level of data protection?

Question74: Which of the following statements about the Huawei OceanStor V3 hybrid flash storage system is correct? (Multiple Choice)

Question75: Which of the following statements about flash memory particles is true? (Multiple Choice)

Question76: Which of the following is not part of the storage fault handling process steps?

Question77: What information is collected in project planning and design? (Multiple Choice)

Question78: When configuring the active-active working mode, if the load balancing in the array is adopted, use the command set hypermetro working mode=___________array_id=IDo.

Question79: The safes of all storage arrays have the function of storing data after a sudden power failure of the system.

Question80: When planning and designing storage solutions, if customers focus on performance satisfaction, which of the following aspects should be planned and designed? (Multiple Choice)

Question81: Regarding the name node concurrency feature of Huawei distributed storage products, which of the following is correct? (Multiple Choice)

Question82: Which of the following is not a preparatory work before database migration?

Question83: In which of the following scenarios will OceanStor 9000 not trigger data balance?

Question84: Which of the following statements about the dry CIFS are correct? (Multiple Choice)

Question85: A company's business runs on a set of Huawei all-flash storage devices. During the inspection process, the operation and maintenance engineer found that the average delay on the host side was 1000 ms, and the average delay on the storage side was 800 ms. Operation and maintenance engineers should collect storage operation information and logs, and open performance monitoring tools to analyze front-end host ports, cache performance, LUN performance and hard disk performance.

Question86: A data analysis company plans to migrate data analysis services to HUAWEI CLOUD. Compared with the self-built analysis platform, what are the advantages of the company's migration to HUAWEI CLOUD? (Multiple Choice)

Question87: An enterprise has applications such as key performance applications, mainstream commercial applications, archiving and printing services, and each application is independent. In order to ensure business priority, SmartMulti-Tenant technology can be used to create tenants for different businesses, and according to tenant levels and business characteristics, set the storage resources of each tenant's vStore.

Question88: Which of the storage architectures listed below are scalable? (Multiple Choice)

Question89: Snapshots can be used to verify data consistency between secondary LUNs and Ocean Storage (pacific) hybrid flash remote copy source LUNs, and to protect secondary LUNs. After the snapshot LUN is mapped to the host, the host can read data from and write data to the snapshot LUIN.

Question90: In the process of data migration based on the heterogeneous virtualization function, if there are insufficient storage ports, consider sharing ports with the "active-active" and "remote replication" services when the local storage system and the heterogeneous storage system are networked.

Question91: In Huawei's active-standby disaster recovery solution, which of the following descriptions is the correct process for disaster recovery and failover?

Question92: Bank A purchased all-flash storage using the SmartMatrix fully interconnected high-reliability architecture to ensure that its core business continues to be online. Which of the following statements is true about the characteristics of this architecture? (Multiple Choice)

Question93: A company's business runs on the Linux system (the kernel is Linux 2.6), and is connected to the storage through ISCSI. The engineer found that the read and write bandwidth of the host accessing the storage is very low, and the application operation is stuck and read and write errors are reported.
Which of the following actions will help resolve the issue in this scenario? (Multiple Choice)

Question94: How to read the WWN number of the windows system?

Question95: The company migrates its business to HUAWEI CLOUD, and what systems can be migrated to the cloud? (Multiple Choice)

Question96: Which OS platforms does Huawei Storage Heterogeneous Online Migration support from Companion Storage? (Multiple Choice)

Question97: A customer uses block storage service and puts forward the following requirements for backup networking.
1. The backup data stream does not occupy LUN resources;
2. Backup services do not affect user network performance;
3. Small impact on host business
4, the backup performance is good.
Regardless of cost, which of the following backup networking architectures can meet customer requirements?

Question98: Establish a remote disaster recovery center, the distance is 1000KM, the business data increment is 2G per day, the synchronization is up to 8 hours, the bandwidth utilization rate is 70%, and what is the minimum bandwidth that meets the demand?

Question99: A large e-commerce company uses Huawei Ocean Storage Hybrid Flash System to host its core services.
Which of the following statements about SSD controller chips used in storage systems is incorrect?

Question100: Taking data center A as the priority site and data center B as the non-priority site as an example, when the quorum server is not configured or the quorum server cannot be accessed, the HyperMetro arbitration mode is static priority mode, and when the HyperMetro Pair arbitration occurs ______ site side to obtain arbitration and provide business.

Question101: A company plans to perform data protection through remote replication between data centers A and B. Currently, there is 32GB of production data at site A, and it needs to be copied to site B within 2 hours. The bandwidth utilization rate is about 80%. Please calculate, how much bandwidth needs to be achieved between A and B to meet business needs (without considering deduplication and compression)?

Question102: Bank A uses Huawei all-flash storage to carry its key business. Which of the following can guarantee data reliability? (Multiple Choice)

Question103: Which of the following steps are included in the performance tuning process of the storage layer? (Multiple Choice)

Question104: An archive will expand its data center storage system. In the process of capacity planning by engineers, in addition to data capacity, file system, RATD level, hot spare space, coffer disk, value-added features, etc., it is also necessary to consider capacity variances between hard drive manufacturers and operating systems.

Question105: In troubleshooting tools, ___________ can be used to measure various electrical parameters.

Question106: A company plans to perform performance tuning on a set of Huawei hybrid flash storage for a decision support system. The storage engineer obtained some information after testing:
1) The size of a single I/O is 64 KB-1MB;
2) The proportion of sequential read I/O is 90%;
3) The average utilization rate of front-end bandwidth is 90%;
4) The host application is a database.
Based on the above information, which of the following performance tuning measures meets the requirements of this scenario? (Multiple Choice)

Question107: Which of the following networking supports shared interface modules in Dorado high-end storage products?

Question108: Enable the object WORM function in Huawei distributed storage. The administrator finds that an object can be read and deleted, but cannot be modified. Which WORM state is this object in?

Question109: In a large and medium-sized database application, files such as data, logs, and modification records are stored in the associated LUN1, LDN2, and LDN3, respectively, and remote replication tasks 1, 2, and 3 are created respectively, and the engineer replicates these three remotely. The task is added to the consistency group.
Which of the following statements is true in this situation? (Multiple Choice)

Question110: The FusionStorage software architecture can be divided into business system and management system. The ( ) of business system uses the plog interface for data storage, including multiple copies, EC data balance and reconstruction, and manages disks and reads and writes data through OSD/VDB.

Question111: In the Huawei HyperMetro active-active solution, when the link of the active-active data center fails, it will enter the "to-be-synchronized state". To quickly restore services, you can choose to force the local storage system or the remote storage system to continue to provide services for the host. At this time, the active-active service status will enter "Normal".

Question112: smartqos is based on the I/O ( ) scheduling technology and flow control technology of Lun.fs snapshots to ensure core business

Question113: Which of the following statements about storage networking is correct? (Multiple Choice)

Question114: An enterprise plans to create continuous data protection for its real-time transaction business, and ensures that users can read, write and analyze historical data at different time points without affecting the business. Which of the following features can achieve this requirement? (Multiple Choice)

Question115: When building a disaster recovery system, which of the following solutions should be proposed by a customer to not only ensure the security of data but also ensure that the business is not interrupted?

Question116: In the Huawei OceanStor all-flash storage system, the BBUs of the two controllers have fault alarms. Which description is wrong about the upper-layer service? (Multiple Choice)

Question117: During the homogeneous migration process, after the host multipath completes the link aggregation of the original LUN and eDevlun, the migration task can be created and the migration can be started.

Question118: If the two sites to be migrated are far apart, and the network loss has a great influence on the migration rate, do not adopt the scheme of direct cross-site migration.

Question119: The enterprise's storage engineers are designing an enterprise data backup solution that requires full backups every Sunday, incremental backups every day from Monday to Saturday, and a 4-week data storage period for full backups and incremental backups. Assume the initial data volume is 400 GB in daily increments of 20 GB. Well, 5480 GB is the amount of backend storage data after four weeks.

Question120: When deploying a backup network, in order to ensure the best performance of the ISCSI network, which of the following statements is correct? (Multiple Choice)

Question121: After the OceanStor 9000 is configured with InfoStamper snapshots, which of the following descriptions of data snapshots are correct? (Multiple Choice)

Question122: Huawei's hyper-converged storage adopts a distributed storage logic architecture. Which of the following is the function of the MDC module?

Question123: The effective capacity of the storage device is less than the actual disk capacity. Discrepancies may be caused by hot spare space, coffer disks, RAID parity data or metadata.

Question124: In the HyperMetr feature, the local storage device, the remote storage device and the arbitration server form ( ) application server, which can realize data access across sites.

Question125: Data protection has five main goals: prevent physical errors, prevent logical failures, meet RTO and RP, and meet data __________ time.

Question126: eReplication Agent supports installation on virtual machines or physical machines as software packages.

Question127: . The iSCSI protocol is a SCSI instruction set that runs on the upper layer of the IP protocol. For a TCP packet encapsulating the iSCSI protocol, which of the following parts does not contain?

Question128: Due to technological changes, dynamic scaling and frequent changes of storage services, etc., higher capability requirements are brought to operation and maintenance.

Question129: Regarding the quota characteristics of Huawei Oceanstor storage distributed storage object storage, which of the following statements is incorrect?

Question130: The research phase of backup plan mainly includes, project background research and ( ).

Question131: After successfully hosting the external LUN, you can use the SmartMigration feature to migrate the data on the heterogeneous storage system to the local storage system, and use the local storage system to carry business data.

Question132: When the alarm information can be collected normally, the alarm analysis method is suitable for locating any fault.

Question133: The data protection all-in-one machine is charged according to the back-end capacity > License. When the project is implemented, it is required that the back-end effective capacity must be greater than the license capacity.

Question134: In Huawei all-flash storage, the core of the ( ) technology is to realize the linkage between the controller onboard CPU and the SSD onboard dedicated CPU through a series of algorithm optimization technologies for flash media. High performance and high reliability of the system.

Question135: A large Internet company A purchased Huawei hyper-converged storage to build an IT infrastructure platform. Which of the following scenarios can be used? (Multiple Choice)

Question136: A enterprise uses Huawei backup all-in-one machine for data protection, and uses the advanced backup function to back up the virtual machine system disk. When the system disk fails, the backup data can be accessed by mounting it.

Question137: In the OLTP business scenario, Huawei OceanStor hybrid flash storage uses SmartTier technology to create storage pools. Which of the following settings can improve the accuracy of tiered storage hotspot identification?

Question138: In Huawei storage systems, the storage ( ) tool can pool storage resources and manage them in a unified manner. (Please use English)

Question139: The SmartMigration feature of storage will be used in Huawei's heterogeneous virtualization migration solution. The main advantages of this feature include: (Multiple Choice)

Question140: In Huawei hybrid storage, the host can access any lun and file system through the front-end port of any ______.

Question141: Huawei's hyper-converged storage products have strong consistent replication protocols. When an application writes a piece of data, if it succeeds, one or more copies of the backend must be consistent.

Question142: During the database migration process, which ones are mainly responsible for customer assistance from Huawei? (Multiple Choice)

Question143: When engineer A implements storage delivery, the Linux service host cannot scan the LUN. Which of the following descriptions are possible reasons? (Multiple Choice)

Question144: Which of the following binding modes is recommended for the storage network configuration when using the stand-alone mode, ticket data protection all-in-one machine?

Question145: Divide a LUN by 9000, map it to the operating system and mount a dedicated file system, and use the test tool to write a large number of 13K files. In order to improve the IO performance, it is recommended to set the read size to 16K.

Question146: When building a large-scale FC storage network, you will encounter the scenario of cascading FC switches, when multiple FC switches are cascaded.
Which of the following scenarios will cause the switch to isolate the E-Port side? (Multiple Choice)

Question147: Which of the following products cannot Huawei distributed storage block storage be integrated with?

Question148: The client has sufficient resources to prepare the price, and the production network resources are relatively tight. It is planned that the amount of data to be fully prepared once a week is between 1-2T, the backup window is 3 hours, and the source deduplication is used, and the deduplication ratio is 3, the bandwidth utilization is 0.8. Which of the following networking can meet the backup service requirements with the least investment?

Question149: SmartVirtualization is an important value-added feature of Huawei storage systems. Which of the following statements about its principles and related concepts is correct? (Multiple Choice)

Question150: A company purchased a set of Huawei hybrid flash storage equipment to provide NAS (Network Attached Storage) services for the three departments of finance, personnel and technology. The current network environment is as follows:
1) The clients are all Windows operating systems and join the same AD (Active Directory) domain;
2) The clients and storage systems of the three departments are in the same local area network.
For the allocation of storage space, the requirements are as follows:
1) Each of the three departments uses 1TB of dedicated storage space;
2) Each employee can read and write to their own private directory;
3) Private directories between employees are invisible to each other.
How can storage engineers plan NAS services to meet the above requirements? (Multiple Choice)

Question151: In the process of SSD garbage collection, the SSD disk can directly erase the entire block without moving valid data, and can use less systematic writing methods.

Question152: Which of the following options is not part of the inspection function of Huawei OceanStor Toolkit?

Question153: Data protection methods (such as snapshots or backups) can recover files damaged by viruses.

Question154: The asynchronous remote replication of Huawei OceanStor storage system adopts multi-time slice caching technology, which can make the RPO index of LUN asynchronous remote replication reach the second level.

Question155: The hard disk unit of Huawei's all-flash storage system adopts the self-developed SSD, which is mainly composed of a control unit and a storage unit. The control unit includes the SSD controller, host interface, NANDFLASEH particles, etc., and the storage unit is mainly DRAM.

Question156: ( ) refers to the device where the user stores the backup data.

Question157: A company purchased two sets of Huawei all-flash storage, deployed in data center A and data center B respectively, and configured active-active for them. When data center B fails, DCL (Data change lg) can record data changes in data center A. After the failure is recovered, the changed data is synchronized to the storage device in data center B.

Question158: In the CLI command "change storage, pool relocation speed relocation speed Middle", the ( ) field indicates the object to be operated.

Question159: Huawei's hybrid flash storage adopts the RAID2.0+ software architecture, which realizes the virtualization of the underlying media and the virtualization of upper-level resources, and solves the problem of rapid data reconstruction and intelligent resource allocation.

Question160: In the OceanStor 9000 system, although a floating IP is configured on a node, when a node is powered off abnormally, its floating IP needs to be manually migrated to other nodes.

Question161: SmartCache, as a write cache service module in the storage system, uses SSD disks as an extension of RAM Cache in the storage system, and cache the clean hot data that it can't store for the RAM Cache.

Question162: Taking Huawei OceanStor distributed storage as an example, which options are correct in the description of the storage interface layer in the software architecture? (Multiple Choice)

Question163: The Huawei Oceanstor Dorado high-end system is expanded through a 2-port 100G RDMA shared module. Which of the following is the maximum number of controllers that can be expanded?

Question164: The SmartPatition of Huawei's OceaStor hybrid flash storage can allocate independent cache space for different LUNs, and the capacity of the cache space is shared by read and write operations.

Question165: When the source storage is Huawei storage, the isomorphic online migration solution is supported. In this scenario, you do not need to query the Huawei compatibility list.

Question166: Which of the following are common types of migration? (Multiple Choice)

Question167: A customer deploys one set of storage in two cities, and uses asynchronous remote replication networking between the two storage arrays. Which of the following statements is correct? (Multiple Choice)

Question168: The backup service cannot occupy the storage network bandwidth of the production environment. Which network should I choose?

Question169: An enterprise plans to purchase a set of storage devices. The enterprise business has different requirements for storage performance. Which of the following descriptions is wrong when planning and designing hard disk selection?

Question170: Which of the following are the current mainstream memory storage media? (Multiple Choice)

Question171: Which operating systems are supported by the online migration function of heterogeneous storage? (Multiple Choice)

Question172: Huawei mass storage hybrid flash memory can support NFS and ClFS.

Question173: An enterprise plans to upgrade the storage system and use Huawei's intelligent distributed storage fusion service network.
In the early stage of planning and design research, the collection of network information about the project is carried out. Which of the following should be considered? (Multiple Choice)

Question174: During the construction of a data center, a media company purchased storage equipment from multiple manufacturers. CTOs want to centrally manage these storage devices through storage virtualization. Which of the following is not a function of storage virtualization?

Question175: The application and data of a company have high security requirements. During the inspection, it was found that two NL-SAS hard disks were disconnected, and data was lost. To avoid this situation again, it is necessary to complete the RAID configuration. More than 60%, which of the following are true? (Multiple Choice)

Question176: A scientific research institution purchased a set of Huawei OceanStor 9000 storage products. The main configuration of the product is: 8*Huawei OceanStor 9000 C Node front-end 10GE*2 + back-end 10GE*2, CE6850 switch*2, S5700 switch*1, cable, optical fiber and other accessories are fully equipped. The engineer needs to go to the site to communicate with the customer about the system deployment plan, and has prepared an IP planning plan and IP demand list in advance. Which of the following IP requirements are reasonable? (Multiple Choice)

Question177: Which of the following statements about high performance technology in HyperMetro are true? (Multiple Choice)

Question178: A user purchased a set of Huawei OceanStor 9000 products for video surveillance services. Which of the following description is correct? (Multiple Choice)

Question179: The types of production data of an enterprise include file systems, volumes, operating systems, databases, virtual machines, etc.
Data will be backed up using the standard backup method of the data protection appliance. Which of the following descriptions is correct?

Question180: Operation and maintenance is based on technology, and provides higher-quality services through technical guarantee products. Which of the following aspects can be used to improve the quality of operation and maintenance? (Multiple Choice)

Question181: Which of the following statements about SmartTier is correct? (Multiple Choice)

Question182: What are the recovery modes of Huawei BCManager disaster recovery drill? (Multiple Choice)

Question183: In order to improve the reliability of its important business, an enterprise has deployed a local active-active solution in data center A and B. Which of the following statements is correct about this solution?

Question184: The virtualization data in the storage pool consists of two parts: the metadata volume and the data volume. Which of the following is not included in the metadata volume?

Question185: A file system migration tool for data migration of NAS shared files.

Question186: Which of the following statements about HyperMetro's quorum server model is incorrect? (Multiple Choice)

Question187: In homogeneous storage, if the master reads IO, it must go to the old storage to read the data and return it to the host.

Question188: Which of the following descriptions about the characteristics of the DME architecture is wrong?

Question189: A bank purchased a new all-flash storage device (such as Huawei OceanStor all-flash memory), and the engineer initialized and configured the device. Which of the following operations is correct?

Question190: There are two services, A and B, in the storage system of an Internet company that are constantly competing for cache and network resources, resulting in longer waiting times for other services. Among them, A business is a transaction processing application program, and B business is an analysis and query application program, which needs to ensure the immediate response of A business. To solve this problem, engineers configure the QoS priority of A service to be higher than that of B service.

Question191: The creation of logical ports is based on physical Ethernet ports, bound ports or VLANs, and is mainly used for business operation. At the same time, you need to specify the main port, when the main port fails. Services will be taken over by the failover port.

Question192: The storage device generates a fault alarm. Which of the following methods cannot collect storage system fault information?

Question193: In the homogeneous online migration scenario, when the Huawei multi-path version is V1R8C50, and the multi-path cannot query the storage system of the source storage SN, which camouflage strategy should be used?

Question194: The customer's business is very important and has a large amount of data. It needs the best possible business continuity. At the same time, it is required to provide services to the outside world in the event of a natural disaster (flood/earthquake). Please design a disaster recovery network. Which network will you choose?

Question195: The source end is a third-party device, and the destination end is Huawei OceanStor hybrid flash storage. What are the current migration solutions? (Multiple Choice)

Question196: In Huawei's distributed storage, the block service asynchronous remote replication architecture is based on the block service cluster to build an asynchronous replication relationship. Based on the difference data, the data of the master and slave volumes are periodically synchronized. After the data synchronization in the last synchronization cycle is completed, all the data generated on the master volume will be written to the slave volume during the current synchronization cycle until the current synchronization cycle begins.

Question197: Oceanstor collects information through log collection tools and analyzes it through log analysis tools. Which of the following is correct? (Multiple Choice)

Question198: The feature of Huawei SmartCache is to form a smart cache pool of SSD disks and divide them into multiple partitions in the smart cache pool. Different services cannot share partitions to ensure the independence of services.

Question199: Currently, there are more and more demands for centralized storage of different types of businesses, and different types of businesses have different storage demands.
A company plans to purchase a set of OceanStor V3 storage, equipped with 10 600GB SSD disks, 20 1.2T SAS disks, and 40 4TB SATA disks, and plans to deploy Oracle database, Exchange mail application and video application on this storage device at the same time. Which of the following configurations can improve overall business performance? (Multiple Choice)

Question200: A user made the following configuration on Huawei OceanStor 9000:
1. Create a user group GroupOl. The quota configuration of GroupOl in the directory /home/groupOl is as follows:
Recommended Threshold: 10GB, Software Threshold: 15GB, Grace Time: 10 days,
Hard threshold: 20GB.
2. Create a user UserO1 in the user group GroupO1, and the quota of the user UserO1 in the directory /home/groupOl is as follows:
Recommended threshold: 8GB,
Software threshold: 18GB,
Grace period: 15 days,
Hard threshold: 25GB.
What is the effective quota for the user UserOl in the directory /home/g rou p01?

Question201: Which of the following statements are true about the high reliability architecture of Huawei's all-flash storage (Multiple Choice)

Question202: Huawei's disaster recovery active-active solution needs to enable the long-distance transmission function when the distance is () kilometers.

Question203: Which of the following statement about the storage system tuning process is incorrect?

Question204: Storage engineer A often receives feedback from users that the read and write speed of business applications running on the storage is slow, and there is a phenomenon of lag. Engineer A logs in to the storage to check and finds that there is no front-end service port alarm, and replies to the user that the storage performance is normal.

Question205: When planning the backup capacity of storage, which factor does not need to be considered?

Question206: In the Huawei data migration service process, the ( ) link needs to analyze user business risks, disaster recovery, and operation and maintenance security.

Question207: A company plans to deploy a disaster recovery system, which requires that when a data center-level failure occurs, the business will not be interrupted and business data will not be lost; it plans to use two places and three centers to interconnect, which of the following solutions can meet the requirements?

Question208: The engineer went to a customer unit to install Huawei OceanStor 9000 equipment (a total of 5 Huawei OceanStor 9000 C Nodes, both front and rear are 10GE TOE networking, and the TOE network card is installed on site). The equipment has been put on the shelf, and the signal cable and the power cord will be connected next, and software debugging. Due to the tight construction period, the following phenomena occurred during the hardware installation process. Which of the following descriptions of these phenomena are wrong? (Multiple Choice)

Question209: Which of the following descriptions about Huawei's data protection all-in-one solution is correct? (Multiple Choice)

Question210: Smarttier advanced features, the data migration rate range is all __________.

Question211: An enterprise uses Huawei's all-flash storage system to support its main business. In order to reduce the storage pressure caused by duplicate data, if the data type is not suitable for online deduplication, the ( ) of the data is calculated and the result is inserted into the opportunity table.

Question212: Huawei's hybrid flash storage uses intelligent classification technology, which needs to be deployed on devices with different media types. Data that has not been accessed for a long time will be marked as cold data, and gradually transferred from slow media to high-performance media.

Question213: For Homedir migration in NAS migration scenario, which of the following description is wrong?

Question214: A customer has 1100GB of data, of which the backup window is 3 hours, and the GE network, to meet the needs of the customer, can only choose the LAN Free networking method.

Question215: Due to the approaching of the National Day, equipment maintenance needs to be powered off and then powered on. What is the correct sequence of power-on?

Question216: The FusionStorage software architecture can be divided into service systems and management systems. The ( ) layer of the service system is used for applications to access the standard access interface of the storage system, and supports the SCSI/iSCSI standard access interface protocol.

Question217: Windows supports two disk partition modes, MBR and GPT. For GPI disks, which of the following options are correct?

Question218: What are the functions of UltraPath? (Multiple Choice)

Question219: Before the cloned file system of Huawei OceanStor hybrid flash storage is split, when the data of the parent file system is physically damaged, the data of the parent file system can be recovered.

Question220: An enterprise has an online transaction system and an email system in a 30 TB storage resource pool. The backup system created 3 Thin LUNs of 10TB. Since the company is just starting out, there is very little data on the online transaction system and mail system. However, the amount of old data that needs to be imported into the backup system is about 20 TB, which exceeds the size of the Thin LUN, resulting in a write failure.

Question221: In the Huawei OceanStor storage system, when creating a clone, the original LUN can be a thick LUN or a thin LUN, and the secondary LUN can only be a thin LUN.

Question222: All-flash storage RAID2.0, CKG is divided into ( ), which is the minimum granularity reference answer used by volume.

Question223: Huawei OceanStor 9000 uses Erasure code technology to protect data. If a site has 6 nodes, and the customer wants to ensure that data can be recovered even when 3 disks are damaged by one stripe, the redundancy protection levels that can be used are: (Multiple Choice)

Question224: A hospital needs to archive many patient cases and inspection results generated every day, but the storage resources are limited.
Under the premise of not occupying the transmission bandwidth, which deduplication method is the best?

Question225: In large and medium-sized database applications, files such as data, logs, and modification records are stored in different LUNs associated with the storage system. The data association in these LUNs is also required when the master is replicated to the slave by the upper-layer service of the host. Ensure the correlation of these LUN data, otherwise the disaster recovery data on the slave end cannot be used to restore services. In this case the remote replication pair of these LUNs can be added to the same consistency group.

Question226: As a common troubleshooting method, the ( ) method is to use a normal working component to replace a suspected abnormal working component, so as to achieve the purpose of locating the fault and eliminating the fault.

Question227: A company plans to purchase a set of Huawei hybrid flash storage equipment to replace the old storage equipment. At present, the daily storage data is 5TB, and the new storage device needs to meet: the usage requirements in the next 5 years, the data growth volume is expected to be 50% every year, please calculate the data volume after 5 years. Without considering deduplication compression, what is the closest value that can meet the needs?

Question228: Which of the following statements about the evolution of storage network architecture is correct?

Question229: The file system quota feature is called smartquota, and K computing can control resources separately for users of resources such as ____________, users, and user groups.

Question230: Under what circumstances can distributed storage not cause refactoring?

Question231: The following is the DeviceManager performance monitoring process, please drag and drop the steps to the correct position. (sort questions)
1. Create an indicator chart
2. Set performance monitoring parameters
3. Configure performance monitoring file dump
4. Configure the threshold

Question232: A company has various businesses such as email and online storage, but its storage space is limited. It plans to enable SmartThin technology to optimize storage space.
Which of the following statements are true about SmartThin? (Multiple Choice)

Question233: Which of the following features does the Thin Lun of Huawei OceanStor hybrid flash storage not support?

Question234: When using the block service of Huawei's distributed storage system, a DR cluster with asynchronous remote replication is enabled.
Which of the following is not true?

Question235: Huawei's distributed storage object storage quota feature, which of the following statements is wrong?

Question236: DME supports active operation and maintenance based on the Al policy engine. Which of the following options can be completed through the DME platform? (Multiple Choice)

Question237: Regarding the description of Huawei OceanStor all-flash storage system, which one is wrong?

Question238: A client, client1 needs to read file X from Huawei OceanStor 9000, and the response to the read request node is A. Regarding the reading process of file X, the correct one is: (Multiple Choice)

Question239: In order to ensure data security and business continuity, M Enterprise has built a set of primary and backup disaster recovery system. The construction information of the disaster recovery system is as follows:
(1) The production center and the disaster recovery center use asynchronous remote replication;
(2) The business data synchronization time is about 8 hours a day;
(3) The daily data increment is about 1500MB;
(4) The replication cycle is every 4 hours.
Based on the above background assessment, the company's IT technicians can meet the requirements if the disaster recovery network bandwidth is greater than 0.5 Mbps.