EMT Practice Test

1. Question Content...

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Question1: Smartkit can manage third-party devices.

Question2: Which of the following is wrong about the features of OceanStor V3?

Question3: NAS equipment optimizes file service, storage, retrieval, file access and other functions on the basis of general-purpose servers.

Question4: Which of the following steps does the CIFS protocol need to go through? (Multiple Choice)

Question5: What are the infrastructure of the data center? (Multiple choice)

Question6: FCoE is a transmission protocol standard that can encapsulate frames in FC in a lossless Ethernet, and is used to build a storage network.

Question7: The backup software in the backup system is called the backup server.

Question8: When a company customer needs to complete data migration between devices, which features can be used to complete it? (Multiple choice)

Question9: Regarding the steps of SAN synchronous replication, which of the following is in the correct order?
(1) The production storage receives the host write request. Hyper Replication logs the request. Only the address information is recorded in the log, and the data content is not recorded.
(2) Hyper Replication waits for the write processing results of the primary LUN and the secondary LUN to return. If all writes are successful, clear the log; otherwise, keep the log and enter the abnormal disconnection state, and then re-copy the data block corresponding to the log address when synchronization is started.
(3) Write the request to the primary LUN and secondary LUN. Normally, the LUN is in the write-back state, and data is written to the Cache.
(4) Return the processing result of the host write request, subject to the processing result of the write master LUN.

Question10: With NV Me standard, 0PCle, SSD can use native PCIe to directly connect to CPU, which can reduce the delay caused by external controller (such as SATA/sas) and CPU.

Question11: What scenarios are supported by Huawei's full storage devices, such as OceanStor100D? (Multiple Choice)

Question12: 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.

Question13: According to the changes in the amount of backup data, the types of backups can be divided into ______. (Multiple choice)

Question14: Which of the following descriptions about RAID and LUN is wrong?

Question15: Which statements are correct about storage expansion? (Multiple Choice)

Question16: 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?

Question17: 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.

Question18: Which of the following statement about the three iSCSI connection methods is correct?

Question19: hich of the following options are correct regarding the advantages of NVMe? (Multiple Choice)

Question20: If the GE network uses the required bandwidth calculation formula to get <100M/s, which backup network should be selected?

Question21: 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.

Question22: Common backup topologies include Lan-Base, Lan-Free, and Server-Base.

Question23: The NAS engine and the storage unit are interconnected by an Ethernet switch.

Question24: 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

Question25: The data of a certain company is archived data and online business data. If the cost of using SSD solid state drives is high, and the use of NL-SAS hard drives cannot meet the performance requirements, what are the following technologies that cannot meet user needs? (Multiple Choice)

Question26: The built-in storage system is directly connected to the host bus, which mainly includes the high-speed cache and memory required for CPU operations, and the hard disk and optical drive directly connected to the computer motherboard.

Question27: ①Scale-out, horizontal expansion, can improve capacity and performance at the same time
②Scale-up, horizontal expansion, cannot improve capacity and performance at the same time (Multiple Choice)

Question28: What are the common protocols in NAS systems? (Multiple Choice)

Question29: Regarding IOPS, which of the following statement is incorrect?

Question30: Regarding the description of pre-copy, which of the following statement is incorrect?

Question31: A bank purchased 1,000 servers, deployed in a distributed architecture, created multiple storage pools using the server's local hard disks, and bound storage resources with the business network, so as to ensure the elastic expansion of storage resources and improve utilization.

Question32: Which of the following steps does the CIFS protocol work need to go through?

Question33: A bank enabled the Smart Tier feature for the storage space of the bill transaction system. During the I/O monitoring process, it was found that the data access written by the business was very high. What are the following configurations that can optimize performance? (Multiple Choice)

Question34: 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?

Question35: Which is correct about RAID 10? (Multiple Choice)

Question36: Which of the following VLANs are correct? (Multiple Choice)

Question37: The CoE protocol means to encapsulate the FC protocol into TCP/IP protocol package and transmit it on the Ethernet.

Question38: For random accessing to mechanical disks, the biggest impact on the time taken to complete an IO is:

Question39: What conditions should be considered for the device backup bandwidth? (Multiple choice)

Question40: A company has newly purchased a batch of mainframes and storage equipment, and will deploy the company's important business according to the plan. The storage network is required to have low latency, high performance, large bandwidth, lossless transmission, and can support Ethernet transmission. Which of the following protocol needs to be selected?

Question41: In Huawei storage (such as Huawei OceanStor hybrid flash memory), which of the following measures is taken by the asynchronous remote replication function to ensure data consistency? (Multiple Choice)

Question42: The cloudification of IT architecture is moving from "separation" to "convergence". What does convergence mean?

Question43: In the storage system, which of the following statements about cables are correct? (Multiple Choice)

Question44: What are the common protocols in SAN networking? (Multiple Choice)

Question45: Which of the following descriptions of RAID striping related concepts are correct? (Multiple Choice)

Question46: 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?

Question47: Among flash memory media chips, QLC is lower in cost than TCL, supports frequent rewriting, can provide high-speed read and write rates, and is suitable for server memory.

Question48: Which of the following descriptions are correct about the functions of the Huawei storage device control module? (Multiple Choice)

Question49: 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)

Question50: Which mirroring scenarios are mainly used for volume mirroring, or Hyper Mirror? (Multiple choice)

Question51: Software RAID realizes unified management of disks through RAID card.

Question52: Huawei's full-flash storage system uses the Smart Matrix architecture to achieve front-end and back-end interconnection, and the failure of any controller does not affect normal business operations.

Question53: For Huawei Ocean Stor all-flash storage devices, which of the following descriptions about LUN and LUN groups are correct? (Multiple Choice)

Question54: What kind of data does company employees look for in mySQL for payroll?

Question55: Taking OceanStor Huawei all-flash storage products as an example, which of the following descriptions of the indicators are correct? (Multiple Choice)

Question56: Among the following backup media, the order of unit capacity price from low to high is:

Question57: The management IP address of a storage device is 192.168.5.12. Which of the following needs to be entered by Engineer A in the browser to log in correctly?

Question58: Huawei RAID-TP technology can tolerate the failure of 3 disks at the same time.

Question59: A reliable ICT infrastructure should avoid a single point of failure of equipment, or even a single point of problem for personnel.

Question60: Which of the following statements are correct? (Multiple Choice)

Question61: 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.

Question62: When the RTO requirement is within 10 minutes, the traditional tape backup method is not recommended.

Question63: In a traditional RAID group, when a certain number of hard disks fail, the entire RAID group can prevent data loss, and the data recovery process has not yet started. What is this state?

Question64: The advantages and disadvantages of disaster recovery technology at the host layer, network layer and array layer. Which of the following statements is correct? (Multiple choice)

Question65: 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:

Question66: The process of regenerating all user data and parity data on the failed disk in the mirror array or RAID array is called:

Question67: In which of the following scenarios InfiniBand can be applied? (Multiple Choice)

Question68: When using the NFS protocol, adding a client and setting read and write permissions will have an impact on performance.

Question69: According to the working principle of mechanical hard drives, what is wrong in Engineer A's analysis of affecting hard drive performance? (Multiple Choice)

Question70: CIFS share permissions from large to small are as follows: 1. "Prohibit", 2 "Read and Write" 3 "Full Control" 4 "Read Only"

Question71: The amount of data backed up by incremental backup is greater than that of differential backup.

Question72: Hybrid cloud is a solution that uses both private cloud and public cloud at the same time.

Question73: Which of the following statement of Quota tree is correct?

Question74: Which of the following statements about the filtering function of the storage system CLI commands is wrong?

Question75: Statement 1: NAS file system is managed by storage or server that provides resources.
Statement 2: The file system of the SAN is managed by the host itself.

Question76: Which of the following descriptions is correct? (Multiple choice)

Question77: Hyper clone consistency must be configured when the Huawei Ocean hybrid flash memory system is created in Hyper Clone.

Question78: Regarding the description of the NFS protocol, which is wrong?

Question79: Taking Huawei OceanStor all-flash devices as an example, which of the following descriptions of logical ports are correct? (Multiple Choice)

Question80: 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?

Question81: What are the NFS authentication methods? (Multiple Choice)

Question82: Converged storage nas and san combine to provide block storage and object storage services, which greatly increases management costs.

Question83: Which three data centers refers to 3DC in the disaster recovery solution? (Multiple choice)

Question84: What is correct about SSD solid state drives? (Multiple Choice)

Question85: For the data stored on the media, there is no situation that requires physical shredding or destruction like data recorded on paper.

Question86: 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?

Question87: Use the CIFS protocol to access the share. When the share name is the same as the user name, the order of access to the share is:

Question88: 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.

Question89: 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)

Question90: Which is correct about HyperMeteor? (Multiple Choice)

Question91: Storage disaster recovery technology is mature, with a wide range of options.

Question92: A data center is an infrastructure built to access and carry server services. According to the business, the data center can be divided into ________. (Multiple choice)

Question93: In a database, all small IO requests, the engineer should configure

Question94: 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.

Question95: Which of the following are types of data? (Multiple Choice)

Question96: Which of the following are the business models of cloud computing? (Multiple choice)

Question97: In the case of using RAID 2.0+ technology, Thick LUN is composed of Grain, and Thin LUN is composed of Extent.

Question98: 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)

Question99: The core of disaster recovery technology is data replication technology. There are many data replication technologies. Which three layers can be roughly divided into the distribution of equipment that realizes the replication function? (Multiple Choice)

Question100: Among the following storage functions, which of the following can provide customers with data disaster recovery functions? (Multiple choice)

Question101: When engineer A is maintaining the Huawei all-flash storage system, he sees the alarm of the cascade module on the reverse side of "Alarms and Events" of Device Manager. After analysis, it is determined that this cascade module needs to be replaced. What are wrong during the replacement period? (Multiple Choice)

Question102: The business needs to provide block services and file services. Which of the following is correct? (Multiple Choice)

Question103: The size of the primary LUN and the secondary LUN in remote replication must be the same

Question104: 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.

Question105: Which statements are correct about consistency group? (Multiple Choice)

Question106: If a user cares about reliability and random write performance, what RAID level would you recommend?

Question107: The performance of the controller, front-end and back-end ports can be monitored through Device Manager.

Question108: 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.

Question109: What are the common time indicators to measure the reliability of a system? (Multiple choice)

Question110: 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.

Question111: RAID 2.0+, which of the following is correct?

Question112: Which one of the following operations is a daily maintenance item in the data center storage?

Question113: What kinds of external storage are there? (Multiple Choice)

Question114: Which is wrong about the Huawei Oceanstor all-flash storage system?

Question115: When creating a hyper clone with hybrid flash memory, a group of hyper clones must be configured.

Question116: Which of the following methods are included in data center data backup? (Multiple Choice)

Question117: Which of the weather forecast cloud images are correct? (Multiple Choice)

Question118: Regarding the new era of ICT and technology, which of the following statements is correct? (Multiple choice)

Question119: Which of the following are included in the host-level disaster recovery? (Multiple choice)

Question120: DAS is divided into internal DAS and external DAS

Question121: Which is the correct description of the FTP file transfer protocol?

Question122: Which of the following three types of disaster recovery technologies are commonly used? (Multiple choice)

Question123: 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 access private directories with the same user name.

Question124: Smart Tier cannot be enabled for a storage pool composed of a single hard disk type.

Question125: 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.

Question126: Which of the following are Huawei storage solutions? (Multiple Choice)