EMT Practice Test

1. Question Content...

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Question1: Huawei ocenstor can only be expanded through PCI and Scale-out.

Question2: PCIE is a high-performance and high-bandwidth serial communication interconnection standard to replace the bus-based communication architecture. It follows the existing PCI concepts and signal standards, and builds a higher-speed serial communication system standard.

Question3: The data backed up by the differential backup is relative to the data added and modified after the last full backup.

Question4: With the advent of the era of big data, the corresponding storage technology is also undergoing changes. Regarding the changes in storage technology, which of the following statements is correct? (Multiple choice)

Question5: Huawei storage deduplication feature, first write to disk, find free time to read and delete.

Question6: What are the storage product forms? (Multiple Choice)

Question7: 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.

Question8: What are the release methods of the operation and maintenance software in the storage system? (Multiple Choice)

Question9: Multipath software can only be used in IP-SAN.

Question10: Which of the following options belong to the subsystem of the storage device? (Multiple Choice)

Question11: Huawei's all-flash storage system uses the SmartMatrix architecture to achieve full interconnection between the front and back ends, and the failure of any one controller does not affect the normal operation of the business.

Question12: The data compression feature refers to the reduction of the transmission processing and storage efficiency of the system by reorganizing the data and deleting duplicate data blocks without losing information.

Question13: SAS is a point-to-point, half-duplex, dual-port interface.

Question14: Description 1: SATA hard disk can be used in SAS environment
Description 2: In terms of interface standards, SATA is a sub-standard of SAS, so the SAS controller can directly control SATA hard disks, but SAS cannot be used directly in the SATA environment.

Question15: In a RAID 5 composed of three disks, if 10110110 and 11010011 are written to two data disks forming the same strip at the same time, then 01100101 will be written to the parity disk.

Question16: The cloudification of IT architecture is moving from "separation" to "convergence". What does convergence mean?

Question17: In an enterprise IP SAN network, the host resource occupancy rate is always high. After investigation, it is found that the Initiator software in the host occupies a large amount of resources to complete the conversion of iSCSI packets to TCP/IP packets. The enterprise engineer proposed several types of storage Network upgrade solutions, which of the following solutions can solve the above problems? (Multiple Choice)

Question18: Which RAID can recover data when data is damaged? (Multiple Choice)

Question19: Which of the following statements about the evolution of storage network architecture is correct?

Question20: Smart Tier cannot be enabled for a storage pool composed of a single hard disk type.

Question21: A company purchasing a set of Huawei storage services needs to provide file services while providing block services. Which of the following is correct?

Question22: Regarding the NFS write mode in the Huawei OceanStor V3 storage system, which of the following is correct?

Question23: Which is correct about traditional RAID? (Multiple Choice)

Question24: 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.

Question25: CKG is composed of multiple CKs on different types of different hard disks in the hard disk domain.

Question26: Which of the following descriptions of RAID 5 is correct? (Multiple choice)

Question27: Regarding database-level disaster recovery, which of the following statement is wrong?

Question28: Regarding the description of pre-copy, which of the following statement is incorrect?

Question29: In Huawei storage, such as Huawei OceanStor hybrid flash memory, the Hyper Metro feature uses strong consistent feature technology. Which of the following description of strong consistency is wrong?

Question30: Which of the following are the characteristics of big data? (Multiple choice)

Question31: 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)

Question32: Which one of the following options is in the correct order of the basic business configuration process for data center block storage?

1. Create a mapping view.
2. Create a storage pool.
3. Create a hard disk domain.
4. Create LUNs and create LUN groups.
5. Create a host group.
6. Log in to Device Manager

Question33: The SCSI bus assigns a unique ID to each device, and can support up to 8 devices. On the one hand, the device ID is used to address and the other is to identify the priority of the device in the use of the bus.

Question34: The server installed Linux operating system accesses the disk array based on the RAID 5 strategy, and the access path sequence is:

Question35: 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.

Question36: The RDMA protocol can achieve direct access to the memory of the remote device. RDMA achieves ultra-low latency between endpoints, ultra-high throughput transmission, and does not require cpu, os intervention does not need to consume too many other resources for the processing and transmission of network data.

Question37: When a company customer needs to complete data migration between devices, which features can be used to complete it? (Multiple choice)

Question38: When the RPO time requirement is at the minute level, the traditional tape backup method can be used.

Question39: Oceanstor dual-controller hybrid flash storage products must ensure that the LUN working controller and the attribution device are consistent in control

Question40: Which of the following descriptions about SCSI is wrong?

Question41: Which of the following is the advantage of object storage? (Multiple choice)

Question42: Which of the following descriptions of RAID striping related concepts are correct? (Multiple Choice)

Question43: Regarding Huawei's OceanStor V3 storage dynamic tiered storage technology, which of the following descriptions is wrong?

Question44: Which of the following statements corresponding to RAID 5 and RAID 10 are correct?

Question45: 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.

Question46: Regarding the disaster recovery drills, which of the following statement is incorrect?

Question47: The RPO in the disaster recovery system measurement indicators is used to measure the business recovery capability of the disaster recovery system

Question48: 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.

Question49: Which of the following statements about RAID write penalties are correct? (Multiple Choice)

Question50: 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.

Question51: Which of the following are the business models of cloud computing? (Multiple choice)

Question52: LAN Free and Server Free are the backup networking modes that have little impact on host performance.

Question53: The Hyper Clone of the Huawei Ocean Stor hybrid flash storage system is a data protection value-added feature. After the Hyper Clone is created, the data of the target LUN needs to be synchronized in the background before the target LUN can be read and written.

Question54: A company purchased a set of Huawei storage (such as Huawei OceanStor hybrid flash memory) equipment, using SAS interface hard drives.
In addition to SAS hard drives, what types of hard drives can the storage support? (Multiple Choice)

Question55: Which of the following is not a backup type?

Question56: 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?

Question57: Which of the following descriptions are correct about IP scale-out expansion? (Multiple Choice)

Question58: What is the difference between synchronous replication and asynchronous replication? (Multiple Choice)

Question59: Which of the following descriptions of the working principle of NFS are wrong? (Multiple Choice)

Question60: Which of the following can be achieved by storage snapshots? (Multiple Choice)

Question61: Which of the following are the maintenance items of the data center storage administrator? (Multiple choice)

Question62: Which one of the following methods can achieve the RTO optimization?

Question63: NAS is easier to deploy than SAN.

Question64: Which of the following are the FC topology? (Multiple Choice)

Question65: The Smart Cache feature in Huawei OceanStor V3 series products can only improve read performance, not write performance.

Question66: What steps did the high-end storage architecture go through? (Multiple Choice)

Question67: Regarding the four disaster recovery modes of active-active, hot standby, warm standby, and cold standby, which of the following statements is wrong?

Question68: Taking Huawei OceanStor distributed storage as an example, which of the descriptions are correct about the storage interface layer in the software architecture? (Multiple Choice)

Question69: The business needs to provide block services and file services. Which of the following is correct? (Multiple Choice)

Question70: Realizes unified hard disk management based on software RAID and RAID card

Question71: Hyper metro double write. After receiving the I/O write request, the two writes together will return to the host. If the local write fails but the remote write fails, the business will be terminated.

Question72: According to the working principle of mechanical hard drives, what is wrong in Engineer A's analysis of affecting hard drive performance? (Multiple Choice)

Question73: According to the storage access rate, which types of storage devices can be divided into? (Multiple Choice)

Question74: Which of the following statements about eservice are correct? (Multiple Choice)

Question75: Which ports in the FC switch can communicate with each other is determined by the zone.

Question76: Regarding the snapshot technology, which of the following statement is incorrect?

Question77: Which of the following statements about Smart Tier technology is correct?

Question78: Which of the following descriptions of the file access protocol is correct? (Multiple choice)

Question79: The hard disk domain supports online adding hard disks, and the storage pool supports online expansion.

Question80: Software RAID realizes unified management of disks through RAID card.

Question81: If the disaster recovery center in the same city fails, the production center in the cascade networking mode will lose all the backup sites.

Question82: Which of the following statements about Thin LUN are correct? (Multiple Choice)

Question83: Regarding the commonly used components of ICT, which of the following statements is correct? (Multiple choice)

Question84: All-flash memory (such as Huawei Oceanstor) uses the smartMation architecture to realize the front-end and back-end interconnection. The failure of any controller does not affect the normal business.

Question85: Which of the following is the correct configuration process for the Huawei OceanStor V3 storage system?

Question86: Statement 1: FC protocol and FCoE protocol have different operating environments, different operating channels, and the same protocol stack.
Statement 2: FCoE can only run on 10GE, which solves the problem of short FC transmission distance and packet drop in IP network.

Question87: Which statements are correct about storage expansion? (Multiple Choice)

Question88: 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.

Question89: Create a Thin LUN on Huawei Oceanstor storage with 100G and an initial allocated capacity of 10G. After mapping this LUN to a Windows ID host, the corresponding disks scanned on the host should be displayed as 10G.

Question90: Which of the following descriptions about DAS is wrong?

Question91: Which of the following scenarios use the SCSI protocol? (Multiple Choice)

Question92: The size of the primary LUN and the secondary LUN in remote replication must be the same

Question93: 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.

Question94: The backup software in the backup system is called the backup server.

Question95: A hospital needs to archive a large number of patient cases and examination results generated every day, but storage resources are limited. Under the premise of not occupying transmission bandwidth, which deduplication method is the best to choose?

Question96: In Huawei RAID 2.0+, which is the correct description of chunck and extent?

Question97: Which of the following methods are included in data center data backup? (Multiple Choice)

Question98: In Huawei OeanstorV3, which of the following statements about cloning are correct? (Multiple Choice)

Question99: Two CKs in a CKG of RAID 2.0+ can come from the same hard disk.

Question100: DAS is divided into internal DAS and external DAS

Question101: The NAS engine and the storage unit are interconnected by an Ethernet switch.

Question102: Which of the following description about CIFS and NFS sharing is incorrect? (Multiple choice)
* If the file system has been set as a CIFS share and then an NFS share is added, the NFS share can only be set as read-only.
* If the file system has been set as an NFS share and then a CIFS share is added, the CIFS share can only be set as read-only.

* CIFS is a network-based sharing protocol, which requires high reliability of network transmission, so it usually uses TCP/IP. NFS is used for independent transmission, so it uses TCP or UDP.
* One disadvantage of NFS is that the client must be equipped with dedicated software. CIFS is integrated into the operating system and no additional software is required.
* NES is a stateless protocol. And CifS is a stateful protocol. After NFS connection fails, the connection can be automatically restored, but CIFS cannot. CIFS only sends a little redundant information, so it has a higher transmission efficiency than NFS.

Question103: 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?

Question104: Distributed storage can provide: block services, big data services, object services and file services.

Question105: What are the current challenges in disaster recovery? (Multiple choices)

Question106: Which of the following three types of disaster recovery technologies are commonly used? (Multiple choice)

Question107: Which of the following about the data and information is correct? (Multiple choice)

Question108: 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?

Question109: Storage disaster recovery technology is mature, with a wide range of options.

Question110: Data management is the process of using computer hardware and software technology to effectively collect, store, process and apply data. In chronological order, what phases can data management be divided into? (Multiple Choice)

Question111: The amount of data backed up by incremental backup is greater than that of differential backup.

Question112: Among the following storage functions, which of the following can provide customers with data disaster recovery functions? (Multiple choice)

Question113: A company previously purchased a batch of storage equipment, using SAS, and now it needs to be expanded due to insufficient capacity. Considering that the business does not require high performance, engineers should use NLS AS hard disks for capacity expansion.

Question114: Which CLI shortcuts are correct? (Multiple Choice)

Question115: An e-commerce website usually has a relatively stable business volume and buys its own servers to build a private cloud operation. However, when the Double Eleven sales promotion comes, the business volume is very large, and the server is rented from the public cloud of the operator to share the holiday load. So, what does the cloud computing deployment model belong to?

Question116: Semi-structured data is generally self-describing, and the structure and content of the data are mixed, and there is no obvious distinction.

Question117: With the advent of the era of big data, storage technology is also undergoing changes. Which of the following is correct about the changes in storage technology? (Multiple Choice)

Question118: A company will generate a snapshot every whole day. An engineer loses data at 9:30-10:30 due to an operational accident at 10:30. Which time's data is the best one to restore?

Question119: The new storage system has high I/O characteristics for the company's main business. When engineers design the hard disk domain, they plan the performance and high-performance tiers. Which hard disks does the company's main business correspond to?

Question120: The CoE protocol means to encapsulate the FC protocol into TCP/IP protocol package and transmit it on the Ethernet.

Question121: 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.

Question122: What are the correct analysis of the dual-control architecture storage subsystem? (Multiple Choice)

Question123: Which of the following descriptions of the SAS protocol are correct?

Question124: Engineer A configures a snapshot of the business data LUN of the Huawei Ocaenstor hybrid flash memory system. Which of the following steps are correct? (Multiple Choice)

Question125: 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.

Question126: When there are bad sectors or bad blocks on the hard disk, which reconstruction method is used?

Question127: Which of the following descriptions is correct? (Multiple choice)

Question128: Description 1: Enterprises should know how much downtime costs, so as to determine the appropriate backup strategy
Description 2: RTO is not always important for business continuity, but RPO is important

Question129: Which of the following statements is correct about dual-controller storage? (Multiple Choice)

Question130: A company belongs to the fields of banking and finance, with a large amount of business data and high security requirements. Which RAID level is suitable for this company?

Question131: The storage architectures listed below, which are scalable? (Multiple choice)

Question132: Which of the following storage system architectures has its own file system?

Question133: Which of the following descriptions of distributed storage are correct? (Multiple Choice)

Question134: Regarding the definition of information, which of the following descriptions are correct? (Multiple Choice)

Question135: When CIFS share permissions are assigned, if a user lives in a different user group, and for a share, the CIFS share grants different permissions to the user group and the user, and the user's permissions are the maximum authority of the user group and user permissions of the user.

Question136: Take Huawei Ocean Stor flash storage products as an example. Which of the following descriptions of indicator lights are correct? (Multiple Choice)

Question137: Which of the following about FC SAN network switching technology is wrong?

Question138: After the host installs the multipath software, which of the following descriptions are correct? (Multiple choice)

Question139: Huawei OceanStor V3 SmartTier feature can be used to place data on the specified disk type.

Question140: In the OceanStor V3 storage system, the types of hard disks in the same hard disk domain must be the same

Question141: Smartkit can manage third-party devices.

Question142: Regarding IOPS, which of the following statement is incorrect?

Question143: In the LAN-Base networking, both business flow and data flow go through the LAN network, which occupies a large bandwidth.

Question144: Unstructured data is stored in the database, and the realized data can be logically expressed in two-dimensional table structure

Question145: Which of the following VLANs are correct? (Multiple Choice)

Question146: Which of the following two descriptions is correct?
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.

Question147: 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?

Question148: Which of the following is correct about the NDMP protocol? (Multiple Choice)

Question149: In a 30 TB storage resource pool, an enterprise created three 10 TB Thin LUN for the online transaction system, mail system and backup system. Since the company has just started, there is very little data on the online transaction system and mail system. The amount of old data that the backup system needs to import is about 20 TB, and the amount of data exceeds the size of the Thin LUN, causing write failure.

Question150: 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
(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

Question151: 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.

Question152: The same source LUN can form multiple different Hyper Clone Pairs with different target LUNs. Only one target LUN can be added to the Hyper Clone Pair.

Question153: When configuring the hyper metro feature in Huawei storage, the arbitration server can only be deployed on the physical server, not on the virtual machine.

Question154: Regarding the new era of ICT and technology, which of the following statements is correct? (Multiple choice)

Question155: OceanStor V3 series storage can only support iSCSI or FC host link alone, and cannot support two host link networking modes at the same time.

Question156: Regarding PCIe Lcale-Out and IP Scale-Out, which of the following are correct? (Multiple Choice)

Question157: Which NVMe is correct? (Multiple Choice)

Question158: Try not to move the disk or install the disk frame when the disk is running because the head does not land when the disk is running. Moving the disk at this time may cause the head to accidentally touch the surface of the disk outside the landing zone, and a head collision may occur, which may even cause data loss.

Question159: The capacity and volume of computer hard disks are constantly changing during the development of computer hard disks. Which of the following is the size of the mechanical hard disk used in Huawei storage products?

Question160: An enterprise adopts cloud primary and backup data-level disaster recovery. During business planning, storage can be divided into two types of LUNs based on actual needs: protected LUNs and unprotected LUNs. VMs that need disaster recovery are created on the protected LUNs, and only configure array replication for protection LUNs to save the storage space requirements of the disaster recovery center.

Question161: Regarding the Refactoring, which of the following statement is incorrect?

Question162: What migration strategies can be set for LUN? (Multiple Choice)

Question163: 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?

Question164: Common backup topologies include Lan-Base, Lan-Free, and Server-Base.

Question165: Remote replication requires that the primary and secondary storage are from the same manufacturer.

Question166: Regarding the description of eSight, which of the following statements are correct? (Multiple Choice)

Question167: Which of the following are not the advantages of cloud data centers?

Question168: Regarding the description of the NFS protocol, which is wrong?

Question169: Distributed storage uses system storage on the cloud and only provides object storage. If you need file storage, you need to purchase NAS equipment separately.

Question170: For remote replication, the primary LUN and secondary LUN must be consistent.

Question171: The lowest level of disaster tolerance during backup.

Question172: When the RTO requirement is within 10 minutes, the traditional tape backup method is not recommended.

Question173: Which of the following options are not the constituent elements of the SAN architecture?

Question174: In a database, all small IO requests, the engineer should configure