A weather forecast is a conclusion based on meteorological data analysis
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1. (true/false) A bank plans to purchase a storage product to build an OLTP-based transaction system. During device selection, all-flash storage devices are recommended, such as Huawei OceanStor all-flash storage. *A. True B. False
* A. A weather forecast is a conclusion based on meteorological data analysis. * B. A weather forecast is a kind of information. C. Meteorological data is a kind of information. * D. Meteorological data can be recorded using tables, figures, or data trees.
* A. True B. False
* A. DAS > NAS > SAN > Distributed Storage > Cloud Storage. B. NAS > DAS > SAN > Distributed Storage > Cloud Storage. C. DAS > NAS > SAN > Cloud Storage > Distributed Storage. D. DAS > SAN > NAS > Distributed Storage > Cloud Storage.
A. True
* B. False 6. (true/false) A single-platter or multi-platter disk allows only one head to read and write data at a time. * A. True B. False
* A. The disk head is damaged. * B. The platter is scratched due to the displacement of the disk head. * C. The control circuit has short-circuited. D. Flash chips are damaged.
* A. The faster the rotational speed of disks, the shorter the seek time. B. In the case of continuous I/Os, the rotational speed is the primary factor affecting IOPS. C. The seek speed is the primary factor affecting the random I/O performance of a disk. * D. The capacity of a single platter directly affects disk performance.
A. A controller enclosure does not have disks. Disks are installed in disk enclosures. B. A controller enclosure consists of controller modules, fan, BBU modules, power modules and/or interface modules. * C. A controller enclosure is the core of a storage system. * D. A controller enclosure processes storage services and manages the disk enclosures connected to it.
A. Host.
B. Storage NIC. * C. Storage Controller. D. Storage Cache.
* A. Actuator. B. Spindle. C. Platter. D. Motor.
* A. Disk platter is responsible of storing data in binary form. * B. The actuator is responsible of moving the Read/Write arm. C. The spindle is responsible for sending commands to the disk head. D. The disk connector is responsible of connection and rotation of the platter.
A. Statement 1 and 2 are true. B. Statement 1 is true; Statement 2 is false. * C. Statement 1 is false; Statement 2 is true. D. Statement 1 and 2 are false.
* A. True B. False
A. RAID3
B. RAID0 * C. RAID5 * D. RAID6
A. True
* B. False 17. (multiple) A storage administrator needs to choose between traditional RAID and RAID2.0+. Which one will be suggested and why? A. Traditional RAID, considering the wider compatibility with types of hard drives. * B. RAID2.0, considering the distributed hot spare space and many-to-many disk reconstruction. C. Traditional RAID, considering the higher performance and faster disk reconstruction. * D. RAID2.0+, considering the load balancing function and shorter RAID reconstruction time.
A. True
* B. False 19. (single) An engineer plans to configure a RAID policy for a set of hard disks with the requirement of having horizontal and diagonal parity information. Which of the following RAID type can be applied? A. RAID 30. B. RAID 50. C. RAID 6 (P+Q). * D. RAID 6 (Double Parity).
* A. SSD drives are placed within the high-performance tier. B. SAS drives are placed within the capacity tier. C. NL-SAS drives are placed within the performance tier. * D. NL-SAS drives are placed within the capacity tier.
A. The low-performance tier consists of SATA disks. * B. The high-performance tier consists of SSDs. * C. The performance tier consists of SAS disks. * D. The capacity tier consists of NL-SAS disks.
* A. Block virtualization enables data to be automatically and evenly distributed on disks in a storage pool, preventing unbalanced loads. B. Independent global or local hot spare disks must be manually configured. *C. If a disk is faulty, RAID 2.0+ uses thin reconstruction to further shorten the reconstruction time. *D. Many-to-many reconstruction is supported. Reconstructed data is written to multiple disks in parallel.
A. True
* B. False 24. (single) How would the RAID2.0+ hot spare space policies configured influences the total capacity and performance of the storage system? A. The total available capacity will increase, and the read/write performance is not changed. * B. The total available capacity will decrease, and the read/write performance is not changed. C. The total available capacity will increase, and the read/write performance will decrease. D. The total available capacity will decrease, and the read/write performance will increase.
A. 4
* B. 1 C. 3
D. 2 26. (true/false) In RAID 2.0+, the storage system automatically sets the hot spare space after a user selects a hot spare policy. * A. True B. False
* A. A storage pool supports a maximum of three storage tiers. B. One storage tier supports multiple RAID policies. * C. SmartTier cannot be enabled for a storage pool that contains disks of only one type. D. The high-performance tier can consist of SAS disks.
A. 1-a;2-d;3-b:4-c * B. 1-d;2-a;3-c;4-b C. 1-d;2-a;3-b;4-c D. 1-a;2-b;3-c;4-d
A. Statements 1 and 2 are both true. B. Statement 1 is true and statement 2 is false. * C. Statement 1 is false and statement 2 is true. D. Both statements 1 and 2 are false.
A. Statement 1 and 2 are true. * B. Statement 1 is true; Statement 2 is false. C. Statement 1 is false; Statement 2 is true. D. Statement 1 and 2 are false.
A. True
* B. False 32. (multiple) A company plans to use NDMP to back up NAS service data. Which networks can the company deploy? * A. Two-way networks * B. Three-way networks C. Six-way networks D. Eight-way networks
A. Ensure that the FC protocol stack is enabled on the application server. B. Changed the SFP connector to ensure that the IQN of the new HBA card is updated. * C. Power off the application server to install the iSCSI HBA card. * D. Update the new IQN of the application server in the storage system to establish a connection.
A. SCSI protocol is preferred as it supports higher number of devices connected to the storage system. * B. SAS protocol is preferred as it has full duplex transmission compared to half duplex parallel SCSI connection. * C. SAS protocol is preferred as it offers higher transmission rate than SCSI protocol. D. SCSI protocol is a better choice due to its higher throughput compared to SAS.
A. SAS disk B. NL-SAS disk C. SATA disk * D. SSD
A. PCIe
* B. SAS C. NVMe
* D. SATA 37. (multiple) On the IP SAN of an enterprise, the host resource usage is always high. It is found that the initiator software on the host occupies a large number of resources to convert iSCSI packets into TCP/IP packets. What are the solutions that can solve the preceding problem? A. Change the 10GE network to a 25GE network. * B. Replace the NIC with a TOE NIC. * C. Replace the NIC with an iSCSI HBA. D. Expand the capacity of the storage device.
* A. SCSI and iSCSI interface protocols are supported. * B. S3 and Swift protocols are supported. * C. The HDFS protocol is supported. D. The IB protocol is supported.
A. SAS cabling * B. Smart I/O card C. 56 Gb Infiniband module D. FC or iSCSI Host Bus Adapter
A. It is difficult to expand the capacity of the DAS architecture after the data volume increases to a certain level. B. As the number of file servers increases, no more servers can be added to share the DAS storage. C. Data and materials are scattered on different devices and cannot be managed in a centralized manner. D. Data and materials are scattered on different devices and hard to be searched for.
A. DAS.
B. PAS. C. SAN.
D. NAS. 42. (multiple) A company purchases storage devices and plans to use IP SAN for networking. Which statements are true? A. Fibre Channel switches must be purchased. B. Initiators must be configured on hosts. C. Targets must be configured on storage devices. D. SAS cables must be purchased for networking.
A. Port zoning because it is more flexible when it comes to changing patch points. B. Soft zoning because it is more flexible when it comes to changing patch points. C. Port zoning and Soft zoning should always be used together. D. Zoning is not required in a FC SAN.
A. A failover group is a combination of ports that are used for IP address failover in a storage system. B. IP address failover applies only to IP SAN and does not apply to other storage network architectures. C. Failback means that the faulty port takes over services again after it recovers. D. IP address failover ensures service continuity and improves the reliability of paths for accessing file systems.
A. True
B. False 46. (single) In which of the following system architectures, the client can run programs over the Internet without installing any application program? A. Client/Server Architecture. B. Browser/Server Architecture. C. Client/Free Architecture. D. Network/Client Architecture.
A. Database applications used by the financial department B. File sharing among departments C. Intelligent tiering of hot and cold data D. Creation of thin LUNs to save initial capacity
A. True
B. False 49. (true/false) Distributed storage (such as Huawei OceanStor distributed storage) uses GE switches for node interconnection to achieve linear improvement of capacity and performance. A. True
B. False 50. (multiple) Huawei OceanStor distributed storage is used as an example. Which scenarios are best suited to distributed storage(such as OceanStor 100D)? A. Private cloud B. Big data analysis C. Distributed database D. Virtualization
A. 123456 B. 352614 C. 351462 D. 345612
A. Physical Provisioning. B. Virtual Provisioning. C. Thin Provisioning. D. Thick Provisioning.
A. Global Deduplication. B. Local Deduplication. C. Source Deduplication. D. Target Deduplication.
A. Enable the QoS to limit the number of connections to hosts. B. Enable the QoS to limit the maximum IOPS that can be utilized by hosts at a certain time. C. Enable QoS to limit the maximum bandwidth that can be utilized by hosts at a certain time. D. Enable QoS to limit the number of files that can be transferred on each session.
A. Reliable service continuity and online service data migration B. Stable data consistency and timely synchronization of data changes C. Convenient performance adjustment, supporting data migration between different storage media and between different RAID levels D. High space utilization and redundant data deletion during data migration
A. SmartMigration B. SmartTier C. HyperClone D. HyperMetro
A. Confirm that the snapshot license is within the validity period. B. Create a snapshot pair. C. Create a snapshot. D. Set the snapshot description.
A. Deploying the quorum server on a VM at any active-active site helps reduce costs. B. The quorum server can be deployed in multiple operating systems, such as Windows and Linux. C. The failure of the quorum server does not affect service provisioning. D. The quorum server can communicate with the storage management network or storage service network.
A. True
B. False 60. (true/false) HyperMetro of Huawei storage (such as Huawei OceanStor hybrid flash storage) uses dual-write to ensure data consistency. When a write I/O is delivered, a write success message is returned to the host only after both the local and remote LUNs return a write success message. If the remote storage device is faulty, no write success message is returned to the remote storage device, As a result, the write I/O cannot be completed and services are interrupted. A. True
B. False 61. (single) In Huawei storage (such as Huawei OceanStor hybrid flash storage), HyperMetro uses the strong data consistency technology. Which statement about data consistency is false? A. In HyperMetro, the distributed lock mechanism is used to ensure data uniqueness and consistency. B. The cluster technology can be used to ensure consistency at the application layer. C. When data is written, I/Os are written to both the local and remote LUNs to ensure data consistency. D. If the remote storage is restarted, data consistency cannot be ensured.
A. True
B. False 63. (multiple) The IT system of enterprise A is deployed in two data centers in active/passive DR mode. It is planned to switch services from the primary site to the secondary site and then upgrade the primary site during off-peak hours the following Saturday. Which operations are performed during switchover? A. Restart the secondary storage system. B. Perform the primary/secondary switchover. C. Set the secondary LUN to the readable/writable state. D. Split the remote replication pair.
A. SmartTier B. RemoteReplication C. HyperSnap D. SmartThin
A. True
B. False 66. (single) Statement 1: If possible, you are advised to perform only a full backup. Statement 2: LAN-free backups are usually slower than LAN-based backups. A. Statements 1 and 2 are both true. B. Statement 1 is true and statement 2 is false. C. Statement 1 is false and statement 2 is true. D. Both statements 1 and 2 are false.
A. True
B. False 68. (multiple) For the application level DR, the data and services are required to be synchronized not only in real time but also periodically. In this situation, which of the following technologies are involved ? A. Synchronous Remote Replication. B. Asynchronous Remote Replication. C. Device-to-Device Replication. D. Application-to-Application Replication.
A. HA handles single component failures causing the workload to switch between servers in the cluster. B. DR is able to cope with large scale failures causing the workload to switch between data centers. C. HA is a technology design that minimizes IT disruptions by providing continuity through redundant or fault-tolerant components. D. HA is a pre-planned approach for reestablishing IT functions and their supporting components at an alternate facility in the event of disaster.
A. The number of data centers involved. B. The connection between the data centers. C. The SAN technologies used in each data center. D. The storage system used in each of the data centers.
A. Check the indicator status and rectify related faults. B. Check the system performance and handle related exceptions. C. Check the service status and rectify related faults. D. Restart the storage device.
A. True
B. False 73. (true/false) To prevent misoperations from affecting the stability and data security of the storage service system, engineer A can control the operation rights and scope of users by level and role. A. True
B. False 74. (multiple) What is the main purpose of hot swapping technology in disk enclosures? A. To swap out the hard disks after proper shutdown of storage system B. To swap out the hard disks without turning off the storage system. C. To be able to swap out the disks when the temperature is too hot. D. Maintain the temperature of the disks to prevent overheating.
A. Create a storage pool. B. Create a host. C. Create a LUN. D. Create a LUN group.
A. Controller B. Interface module C. Management module D. BBU Which of the following statements about block virtualization technology for Huawei storage systems are correct? (Choose all that apply.) A. A CKG is the unit used in applying for space, releasing space, and relocating data. B. Data reconstruction efficiency improves significantly. C. A RAID group is formed in the unit of physical disks. D. Data is distributed to all disks, fully leveraging the read/write processing capability of a storage system. Which of the following statements are characteristics of pre-copy technology? (Choose all that apply.) A. Improves system reliability. B. Reduces system performance. C. *Migrates data from a suspected faulty disk to a hot spare disk immediately after the error count of the suspected faulty disk exceeds the preset threshold. D. *Reduces the occurrence of reconstruction. Which of the following occurs after multipathing software is installed on a host? (Choose all that apply.) A. Improves link reliability and prevents the failure of a single link from causing a system failure. B. Sets up connection between a storage device and the host. C. Avoids logical errors from occurring in the operating system as a result of multiple reachable paths to the same LUN. D. Maps a LUN to the host. Statement 1: An ICT infrastructure should be built with high end equipment and be located in one site. Statement 2: A server is a rackmounted enterprise version of a desktop computer and typically has more than one hard disk installed. A. Statement 1 is True; Statement 2 is False. B. Statement 1 is False; Statement 2 is True. C. Statement 1 and Statement 2 are both True. D. Statement 1 and Statement 2 are both False. Statement 1: Fiber optic cables must be bended with a minimum radius of 10 centimeters. Statement 2: Bends and dirt causes the light signal to be weaker and the sensor cannot detect the light pulse then. A. Statement 1 and 2 are true. B. Statement 1 is true; Statement 2 is false.* C. Statement 1 is false; Statement 2 is true. D. Statement 1 and 2 are false. A snapshot is a copy of the source data at a point in time. Snapshots can be generated quickly and only occupy a small amount of storage space. *True
О False An enterprise creates three 20 GB thin LUNs for the online transaction system, email system, and backup system in a 60 GB storage resource pool. As the company is in its infancy, there is very little data on the online transaction system and email system. However, the amount of legacy data to be imported to the backup system is about 40 GB, which exceeds the capacity of the corresponding thin LUN. As a result, data fails to be written to the backup system. * True False
SmartQoS can prioritize critical applications in storage resource allocation by limiting the resources allocated to non-critical applications. *True
О False Huawei OceanStor all-flash storage systems use the SmartMatrix architecture, which allows all disks to share all front-end and back-end interface modules. Failure of any disk does not affect services. True *False
HyperSnap for File is based on Copy-On-Write. True
*False SAN provides file sharing services through protocols such as NFS and CIFS. True *False
When RAID 2.0+ is used, a thick LUN consists of extents and a thin LUN consists of grains. *True
False Storage controllers are only connected to disk enclosures within the fibre channel networks . True *False
XML, HTML, and JSON represent types of structured data. True
*False RAID 50 writes the data to disks in strips and then creates images for written data . True * False
In the Server-Free backup network, the backup data stream is transmitted over a existing LAN network. True
* False HyperClone is a value-added feature of Huawei OceanStor all-flash storage for data protection. The target LUN can be read and written immediately, and you do not need to wait for the copy process to complete. *True False
The external storage system is directly connected to the host bus, involving the high-speed cache and memory required for CPU computing, and the disk and CD-ROM drive that are directly connected to the computer main board. True
*False When 500 bytes of data is written to RAID 5 and the sector size of HDDs in the RAID group is 512 bytes, data verification is not required because the amount of data to be written is small. True *False
A grain is logical storage space in a chunk group. It is the minimum unit for hotspot data statistics and migration. The size of grains can only be 64KB. True *False
A backup set is a group of data that is backed up in a batch. A backup set can be used for full backup, but can not be used for incremental backup. О True
*False Disasters can happen anywhere at anytime. Implementation of back-up systems will minimize the impact of sudden unexpected disasters. True *False
Long periods of service interruption due to the lack of disaster recovery system will can cause financial losses and reputation issues to the business. *True
False An engineer plans to configure RAID 6 for a NAS storage system. 4 disks are sufficient for this configuration. *True False
A bank purchases 500 servers, chooses the distributed architecture for deployment, uses local disks of the servers to create multiple storage pools, and binds storage resources with the service network. In this way, elastic scaling of storage resources is guaranteed, and resource utilization is improved. True
* False For a Huawei OceanStor distributed storage, which statements is NOT true about the storage interface layer in the software architecture? A. SCSI and iSCSI interface protocols are supported. В. S3 and Swift protocols are supported. The HDFS protocol is supported. *D. The IB protocol is supported. Which of the following statements is NOT true about RAID 10 working principles? A. RAID 10 consists of nested RAID 1 + RAID 0 levels and allows disks to be mirrored (RAID 1) and then striped (RAID 0). В. A RAID 10 group consists of an even number of disks. C. When data is written to the RAID 10 group, data blocks are concurrently written to sub-groups through mirroring. D. RAID 10 can restore data if any two disks are faulty. Which of the following statements is NOT true about distributed storage? A. Supports large-scale horizontal expansion. В. Supports expansion by addition of nodes to increase both computing capability and storage space. C. Does not support elastic EC for data redundancy protection. D. Supports storage resource pooling and virtualization. Which of the following statements is NOT true about logical ports for Huawei OceanStor all-flash storage devices? A. Logical ports are created based on bond ports, VLAN ports, or Ethernet ports. В. Logical ports are virtual ports that carry host services. C. An IP address is assigned to each logical port for services. *D. Different logical ports can have the same IP address. Which of the following statements about DAS is NOT correct? A. A storage device connects to a host using the SCSI-based bus architecture. В. DAS is unfavorable to storage resource sharing. C. The host CPU has a work load when storing data. D. Long-distance transmission is supported between a host and a storage device. If no hot spare disk is configured, how many faulty disks can a RAID 3 group tolerate at most? A. 4 В. 1
С.З D. 2
Which of the following is not a layer of SCSI Target Model? A. Network Layer В. Port Layer C. Middle Layer D. Device Layer
Which of the following requirements are NOT involved when implementing of the business continuity plan? A. The policy and regulation requirements. B. The business operation requirements. C. The customer requirements. D. The vendor requirements. Which of the following is not a layer of SCSI Initiator Model? A. SCSI Link Layer В. SCSI Network Layer C. SCSI Middle Layer D. SCSI Device Driver Layer Suppose a company needs to provide multiple services, including email and web disks, but their storage capacity is limited. The company plans to use SmartThin to optimize the storage space usage. Which of the following statements is NOT true about SmartThin? A. SmartThin virtualizes storage resources. В. SmartThin implements on-demand allocation. C. SmartThin does not allocate all space in advance. It presents a virtual storage space larger than the physical storage space. D. A LUN whose capacity is greater than the maximum physical available capacity of the storage pool cannot be created. Which of the following statements is NOT true about a dual-controller storage system? A. There are two working modes: active-standby and active-active. В. In active-standby mode, only one controller works at a time. C. In active-standby mode, if one controller is faulty, services are not affected. D. When one controller is faulty, the service failover in active-active mode is more efficient than that in active-standby mode. During storage planning and deployment, an enterprise has high requirements on read/write performance, data redundancy, and data recovery capabilities. The enterprise wants to ensure that data can be recovered when a single disk is faulty. In addition, the capacity usage of disks in the RAID group consisting of six disks must be greater than or equal to 60%. Which RAID levels can NOT be selected to meet the preceding requirements? A. RAID 1 В. RAID 5 C. RAID 6 D. RAID 50 Which of the following best describes the relationship between the storage and host in SAN? A. One-to-one. B. One-to-Many. C. Many-to-One. D. Many-to-Many. Which of the data storage types is NOT classified based on data access frequency? A. Online storage В. Nearline storage C. Offline storage D. Unified storage A company deploys a new storage device and plans to use NFS for file sharing. Which of the following statements is true about NFS? A. NFS is supported by Windows and Linux. В. NFS supports data transmission over Fibre Channel networks. C. Transmission distance must not exceed 100 m. D. NFS does not support access control. Which of the following statement about SCSI are true? A. SCSI stands for "Small Computer System Interface". It is a protocol system. B. The latest protocol is SCSI-3, which provides a transmission speed of up to 1 GB/s. C. The evolution is SCSI-1 > SCSI-2 > SCSI-3. D. SCSI supports communication between different devices. An enterprise establishes active-active data centers in city A and city B. If the active-active arbitration mode of the storage (such as Huawei OceanStor hybrid flash storage) is static priority mode, site A is the static priority site. Which of the following statements are NOT true? A. If the link between two storage systems is down, both sites A and В continue providing services. B. If site A is faulty, site В automatically takes over services. C. If site В is faulty, site A automatically takes over services. D. If links between the host and site A and between the host and site В are down, the HyperMetro pair status is normal. Which statements are NOT true about flash chips? In the SLC, one cell can store one bit of data. In the MLC, one cell can store two bits of data. In the TLC, one cell can store four bits of data. In the QLC, one cell can store three bits of data. Which RAID levels do NOT use the parity check technology? A. RAID 1 B. RAID 3 C. RAID 5 D. RAID 0 Which statements are NOT true about the disk usage of a storage system? A. SSDs belong to the high-performance tier and are used to store frequently accessed data. B. NL-SAS disks belong to the capacity tier and are used to store data that is least frequently accessed. C. SAS disks belong to the high-performance tier and are used to store frequently accessed data. D. NL-SAS disks belong to the capacity tier and are used to store data that is accessed at a medium frequency. A company purchases a Huawei storage device (such as Huawei OceanStor hybrid flash storage) that uses SAS disks. In addition to SAS disks, which types of disks are NOT supported by the storage device? A. NL-SAS disk B. SCSI disk C. Fibre Channel disk D. SSD
Which of the following statements are NOT true about the evolution of the storage network architecture? A. Data needed to be stored as the data volume increased. Therefore, the earliest and simplest storage architecture SAN emerged. B. SAN provides file storage to make file sharing in the DAS architecture more convenient. C. Compared with DAS architecture, NAS architecture provides better file sharing services. D. Distributed storage emerged in the same time period as DAS, providing better scalability for DAS architecture.
Which statements are NOT true about cables in a storage system? A. One end of the optical fiber can be connected to a Fibre Channel HBA, and the other end can be connected to a Fibre Channel switch or storage device. B. Serial cables are used to connect expansion ports and connect controller enclosures to disk enclosures. C.Mini SAS HD cables are used to connect PCIe ports on controllers in a controller enclosure to data switches. D. There are mini SAS HD electrical cables and mini SAS HD optical cables. Which of the following disk interface technologies does NOT use serial interface technology? A. ATA B. SATA
C. SAS D. SCSI
Which of the following components are NOT responsible for rotating the disk platter in the disk drive? A. Spindle B. Actuator C. Control Circuit Board D. Read/Write Arm
An engineer maps the storage system to the file server to store various enterprise files. One day, the file system is attacked by viruses and files cannot be opened. To access the files, the engineer performs a snapshot rollback. Which of the following statements are true? A. A snapshot rollback can quickly restore data. B. Some data may be lost during a snapshot rollback. C. If there are writes to the source LUN during a snapshot rollback, the rollback is performed after the writes are complete. D. When no host reads or writes data, the snapshot data is rolled back to the source volume in sequence. Based on the analysis of disk characteristics and data characteristics regarding storage tiers, which of the following statements are not correct? A. SSD drives belong in the high-performance tier and store the data with high access frequency. B. NL-SAS drives belong in the capacity tier and store the data with the lowest access frequency. C. SAS drives belong in the high-performance tier and store the data with high access frequency. D. NL-SAS drives belong in the capacity tier and store the data with the medium access frequency. Which statements are true about unstructured data? A. There are regular models for unstructured data. B. Text and images are unstructured data. C. Images, audio, and video are unstructured data. D. XML and HTML files are unstructured data. Which of the following are the characteristics of the active-active mode of a storage controller? A. Two controllers process the I/O requests from application servers concurrently. B. If a controller becomes faulty, the other takes over the work of the faulty controller without disrupting ongoing services. C. The primary controller processes the I/O requests from application servers and the secondary controller is in the idle state. D. The active-active mode achieves load balancing, full utilization of resources, and system performance improvement. Which of the following are components of a backup system? A. Backup software B. Backup media C. Backup server D. Backup policy Which statements about SmartTier dynamic storage tiering technology are true? A. The SmartTier calculates and analyzes the activity level of data. B. The SmartTier automatically and dynamically matches data from different activity levels with storage media of different characteristics. C. The SmartTier data relocation activities are based on configured policies. D. Data statistics, analysis, and relocation activities of the SmartTier affect service continuity and data availability. Which of the following are correct regarding the differences of IP SAN and FC SAN? A. IP SAN uses iSCSI protocol for data transmission. B. FC SAN uses FC protocol for data transmission. C. IP SAN can connect to FC SAN without any additional protocols. D. Both encapsulates the SCSI command with their underlying protocol before transmission. The official website of an enterprise cannot be accessed. Maintenance personnel find that two NL-SAS HDDs in the disk array are in the alarm state at the same time, causing data loss. To avoid such problems, which configurations can be used by the enterprise on the premise that the disk capacity utilization cannot be higher than 70%? A. RAID 6 group in 2D+2P mode B. RAID 5 group in 4D+P mode C. RAID 6 group in 4D+2P mode D. RAID 6 group in 6D+2P mode A bank purchases a new storage device. During the RAID level configuration, the bank requires that data reliability be improved and parity data be stored on different disks. Which RAID levels can NOT meet the requirements? A. RAID 3 B. RAID 0 C. RAID 5 D. RAID 6 What of following are NOT the function of hot spare in storage? A. Additional space for usage when storage resource is low. B. Used as cache to increase the performance of disks. C. Spare disk space for storing metadata. D. Spare disk space used for disk data reconstruction when disks are faulty. Which of the following are not examples of unstructured data? A. Images B. SQL Databases C. NoSQL Databases D. Video
Which of the following statements are true? A. CIFS is a network-based sharing protocol. It has high demands on network transmission reliability,so it usually uses TCP/IP. B. One disadvantage of CIFS is that Windows clients must be equipped with dedicated software. C. NFS is a stateless protocol while CIFS is a stateful protocol. NFS can be automatically recovered from a fault while CIFS cannot. D. Both the CIFS as well as the NFS protocol requires file format conversion.
On the IP SAN of an enterprise, the host resource usage is always high. It is found that the initiator software on the host occupies a large number of resources to convert iSCSI packets into TCP/IP packets. What are the solutions that can NOT solve the preceding problem? A. Change the 10GE network to a 25GE network. B. Replace the NIC with a TOE NIC. C. Replace the NIC with an iSCSI HBA. D. Expand the capacity of the storage device. In the storage system of an Internet company, services A and В compete for cache and network resources, prolonging the wait time for other services. To solve this problem, cache partitioning and traffic control need to be configured. Service A is used for processing transactions and requires instant response. Service В is used for analyzing and querying data. Which of the following configurations are NOT correct? A. When configuring cache partitions, ensure that the cache of service A is larger than that of service B. B. When configuring cache partitions, ensure that the cache of service В is larger than that of service A. C. Set the QoS priority of service В to be higher than that of service A. D. Set the QoS priority of service A to be higher than that of service B. Which of the following statements are NOT true about the structure and functions of the hard disk components? A. Disk platter is responsible of storing data in binary form. B. The actuator is responsible of moving the Read/Write arm. C. The spindle is responsible for sending commands to the disk head. D. The disk connector is responsible of connection and rotation of the platter. Smartcompression reorganizes data to save storage space and improve the data transfer, processing, and storage efficiency without any data loss. True
False The recovery point objective (RPO) can be regarded as the maximum acceptable amount of data loss measured in time. True False
Which of the following statements is true about NFS? A. The NFS service must be started before the RPC service. Otherwise, NFS cannot register port information with RPC. В. The RPC service manages NFS port allocation in a unified manner. C. RPC provides information sharing during the NFS working process. D. During the NFS working process, requests from the client can skip RPC and be directly sent to the server.
Which of the following statements about NDMP protocol is NOT true? A. It is an open protocol based on enterprise-level data management. В. It is oriented for data backup and recovery. C. It supports CIFS-or NFS-based file backup. D. It does not support backup to the tape library. Which of the following storage technologies has the worst expansion capabilities? A. NAS В. SAN
C. DAS D. Distributed storage Huawei OceanStor series storage system hardware includes controller enclosures and disk enclosures. Which of the following statements about controller enclosures is NOT true? A. A controller enclosure does not have disks. Disks are installed in disk enclosures. В. A controller enclosure consists of controller modules, fan, BBU modules, power modules and/or interface modules. C. A controller enclosure is the core of a storage system. D. A controller enclosure processes storage services and manages the disk enclosures connected to it. Which statements is NOT true about information? A. Information is the same as data. В. Information is different from data. C. Information is processed data. D. Information is used to eliminate random uncertainty. Compared with traditional RAID, which of the following is NOT a feature of RAID 2.0+? A. Block virtualization enables data to be automatically and evenly distributed on disks in a storage pool, preventing unbalanced loads. В. Independent global or local hot spare disks must be manually configured. C. If a disk is faulty, RAID 2.0+ uses thin reconstruction to further shorten the reconstruction time. D. Many-to-many reconstruction is supported. Reconstructed data is written to multiple disks in parallel. Which of the following RAID technologies does not require parity data calculation when being used to write data? A. RAID 0 В. RAID 3 C. RAID 6 D. RAID 50 Which of the following is NOT true about NAS? A. Offers a uniform way to access files over an network. В. Traffic between the NAS device and the workstation should be separated from traffic from the workstation and the internet. C. NAS storage capacity is dedicated to the NAS device. D. NAS storage capacity can be block based storage. Which statements are NOT true about PCIe scale-out and IP scale-out? A. PCIe scale-out uses the PCIe protocol while IP scale-out uses the IP protocol. B. PCIe scale-out integrates PCIe channels and the remote direct memory access (RDMA) technology to implement service switching between controllers. C. PCIe scale-out supports the Ethernet protocol. D. PCIe scale-out supports the Internet wide-area RDMA protocol (iWARP) technology. During data center construction, a media company purchased storage devices from multiple vendors. The CTO wants to centrally manage these devices through storage virtualization. Which of the following functions are provided by storage virtualization? A. Hiding the complexity of physical devices B. Enabling servers to directly access storage hardware C. Supporting unified deployment and management D. Reducing the limitations of physical storage capacity Which of the following statements about reconstruction are correct? A. RAID 0, 1, 5, 6, and 10 support reconstruction. B. Reconstruction requires hot spare disks. C. Reconstruction affects system performance. D. Reconstruction does not interrupt system services. A new ThinLUN of 100 GB is created. The option "Initially Allocated Capacity" was set to 50 GB. Which of the following statements are NOT true about this LUN? A. No more than 50 GB can ever be written to this volume. B. The LUN, like all ThinLUNs, does not occupy any space at creation time. C. The LUN will allocate 50 GB of storage capacity even if the LUN was not formatted. D. The LUN must be fully formatted first and then consumes 100 GB of storage capacity. When CLI is used to configure Huawei hybrid flash storage, which of following operations are involved in creating storage space? A. Create a storage pool. B. Create a host. C. Create a LUN. D. Create a LUN group. Which of the following statements are correct? A. A RAID group is like a physical volume that consists of multiple disks. B. One logical volume can be created on a physical volume. C. Multiple logical volumes can be created on a physical volume. D. A LUN can reside on multiple RAID groups. Which of these are NOT O&M standard systems? A. Information Technology Infrastructure Library (ITIL) B. International Organization for Standardization 2000 (IS02000) C. Institute of Electrical and Electronics Engineers (IEEE) D. Storage Networking Industry Association (SNIA) Which statements are NOT true about the synchronization process of HyperClone? A. When a HyperClone pair is created, initial data synchronization is started. Synchronized data will overwrite the data on the target LUN, if any. B. When a HyperClone pair is created, all data will be synchronized in initial data synchronization. C. During initial synchronization, a snapshot is automatically created for the source LUN. Therefore, a snapshot license is required. D. Reverse incremental synchronization is not supported. Which of the following items are mandatory in a Fibre Channel SAN? A. Storage device B. Fibre Channel switch C. Fibre Channel HBA D. Windows operating system Which of the following statements are true about Huawei OceanStor all-flash storage systems? A. When creating a LUN, you must plan the owning controller for the LUN to implement load balancing among controllers in the system. B. OceanStor all-flash storage systems support front-end interconnect I/O modules to straightly send host I/Os to the most appropriate controller. C. The caches on all controller nodes form a global cache. D. Data in each LUN is evenly distributed across the caches on all nodes. Which of the following RAID types has fault tolerance of no more than 1 drive failure? A. RAID 0 B. RAID 3 C. RAID 5 D. RAID 6 The data processing procedure includes data input, processing, and output. Which operations are not performed in the data processing phase? A. Calculating salaries based on the attendance records of employees B. Calculating monthly sales summary based on sales orders C. Importing calculation data to the database D. Printing pay slips Which of the following statements are NOT true about SmartThin LUNs? A. Space will be reclaimed in all Windows operating systems when data is deleted in the OS. B. A Thin LUN cannot be converted into a Thick LUN. C. SmartThin must be enabled on all LUNs of a storage pool. D. SmartThin LUNs consume just a little storage capacity at the time they are created. An enterprise deploys a storage system and purchases SSDs, SAS disks, and NL-SAS disks. Which of the following statements about the mapping between disks and storage tiers are NOT true? A. SSDs belong to the high-performance tier. B. NL-SAS disks belong to the performance tier. C. SAS disks belong to the capacity tier. D. SAS disks belong to the high-performance tier. Which of the following statements about LAN-based backup are true? A. Instruction flows are transmitted over the LAN whereas data flows are not B. The backup agent affects the performance of application servers. C. Backup data is based on LANs, affecting network performance. D. Backup jobs must be separately maintained, complicating management and maintenance. In the Server-Free backup network, the backup data stream is transmitted over a existing LAN network. True
False In NAND flash memory technology, OLC is cheaper than TLC and supports frequent rewriting. Storage class memory (SCM) provides high-speed read/write and is ideal for server memory space. True False
An engineer plans to configure RAID 6 for a NAS storage system. 4 disks are sufficient for this configuration. True
False The failure of an HDD is more predictable than that of other disk technologies. True False
Which of the following statements is NOT true about the functions of HyperClone? A. When the source LUN fails, service data can be recovered from any point in time before the fault occurred using the data backed up through HyperClone. В. If a disk failure occurs on the source LUN of HyperClone, you can split the target LUN from the source LUN to continue providing services. C. If a logical fault occurs on the source LUN, data can be reversely synchronized from the target LUN to the source LUN to recover services on the source LUN. D. Multiple target LUNs can be created through HyperClone to provide the service data on the source LUN for multiple applications. If a bank acquires a new all-flash storage device (for example, a Huawei OceanStor all-flash storage system), and an engineer performed initial configuration on the device. Which operation is correct? A. Log in to DeviceManager through port 8088. В. Create a thick LUN. C. Configure a RAID 5 policy as the system must tolerate failures of up to two chunks. D. Create 600 hosts in one batch. Which of the following statements can not correctly describe the relationship and properties of HA and DR? A. HA handles single component failures causing the workload to switch between servers in the cluster. В. DR is able to cope with large scale failures causing the workload to switch between data centers. C. HA is a technology design that minimizes IT disruptions by providing continuity through redundant or fault-tolerant components. D. HA is a pre-planned approach for re-establishing IT functions and their supporting components at an alternate facility in the event of disaster. Which of the following statements is NOT true about RAID striping? A. The striping technology divides continuous data into multiple blocks and saves them to different disks. В. A stripe consists of one or more consecutive sectors in a disk, and multiple stripes form a strip. C. The striping technology evenly distributes I/O loads to multiple physical disks. D. After striping, a RAID group can provide a faster speed than a single disk. Which of the following statements about RAID 10 is NOT correct? A. RAID 10 applies to scenarios with demanding requirements for speed and fault tolerance. В. RAID 10 requires at least four member disks. C. In RAID 10, if two member disks in the RAID 1 group fail, data read proceeds normally. D. Data is mirrored and then striped in RAID 10. Which of the following statements is NOT true about eSight? A. eSight uses a component-based architecture. Users can select desired components based on the site requirements. В. eSight supports unified management for Huawei servers, storage devices, virtualization devices, switches, routers, WLAN devices, and firewalls. C. eSight uses the B/S architecture. D. eSight supports only Huawei devices. When a host reads data from a thin LUN, which of the following technologies are NOT used to read data from the actual storage space of a storage pool? A. Capacity-on-write B. Direct-on-time C. Direct-on-read D. Capacity-on-read When configuring the initial capacity allocation for a storage system where the storage tiering is enabled, which of the following allocation policies are NOT suggested? A. Copy all data to the performance tier and allow the system to migrate the data. B. Copy all data to the capacity tier and allow the system to migrate the data. C. Enable automatic allocation if there are no statistics regarding I/O monitoring of the data access frequency. D. Enable allocation based on storage tiers if it is known that the data should belong to which storage tier. Which of the following statements are NOT true about RAID 2.0+? A. Chunks belonging to one file will never be written on the same physical disk. B. RAID 2.0+ has a higher RAID overhead than traditional RAID types. C. With RAID 2.0+ it is supported to select no hot spare disks. D. RAID 2.0+ allows for a complete enclosure to fail without causing data loss. Which of the following are a reasonable application scenarios for QoS? A. To ensure the performance for core applications when resources are insufficient. B. To ensure the performance for high-priority subscribers. C. To improve the network stability and reduce the packet loss. D. To increase the network traffic and avoid the congestion caused by the overconsumption. Which of the following are NOT attached to the storage system serially? A. ATA Drive B. SAS Drive C. NL-SAS Drive D. IDE Drive Which of the following statements are NOT true for a NAS solution? A. Cable length is around 10 m. B. Block size is configurable. C. CIFS and NFS are both commonly used protocols. D. NAS clients are connected to the NAS server using Ethernet switches. Which of the following statements are true about the CIFS protocol? A. The CIFS protocol allows a user to read, write, and create files stored in a storage system like on a local computer. B. CIFS uses a B/S architecture. Therefore, an administrator should confirm the browser version before deployment. C. CIFS is also called Server Message Block (SMB). Special attention should be paid to its versions: SMB 1.0, SMB 2.0, and SMB 3.0. D. NTLM and Kerberos authentications are supported. When maintaining a Huawei all-flash storage system, the engineer finds an expansion module alarm on the "Alarms and Events" page of DeviceManager. After analysis, they determine that the expansion module needs to be replaced. What should the engineer do? A. Replace the expansion module during off-peak hours. B. Connect the new expansion module to the active optical cable (AOC). C. After the replacement, label the replaced expansion module. D. Use the Huawei Storage Networking Assistant to confirm the cable connection of the expansion module to be replaced. During routine inspection, an O&M engineer finds that an alarm is generated on a storage device and performs quick maintenance. Which of the following operations are CORRECT? A. Check the indicator status and rectify related faults. B. Check the system performance and handle related exceptions. C. Check the service status and rectify related faults. D. Restart the storage device. Which of the following statements are NOT true about the extent in RAID 2.0+ technology? A. An extent can be 128 MB, but a grain is always 64 кВ. В. An extent can be as small as 512 кВ and as large as 128 MB. C. An extent can be as small as 512 кВ and as large as 64 MB. D. An extent can be as small as 64 MB and as large as 512 MB. Which of the following statements is NOT true about thin LUNs? A. After SmartThin is enabled, the capacity of thin LUNs to be created can be larger than the maximum available physical capacity of a storage pool. В. Thin LUNs cannot be directly converted to thick LUNs. C. SmartThin must be enabled for all LUNs in a storage pool. D. Thin LUNs consume a small amount of storage capacity when being created. Which of the following statements about RAID 5 are NOT correct? A. RAID 5 has fixed parity disks. B. RAID 5 uses the XOR algorithm for parity. C. RAID 5 writes data by stripes. D. RAID 5 tolerates the failure of a maximum of two member disks without losing data. 45ч Which of the following are limitations of DAS, compared with SAN? A. Poor scalability B. Large investment C. Difficult resource sharing D. Decentralized management An application server is connected to the LUN in a storage system which contains data with different access frequencies. Complaints about the slow I/O are received from users. After the diagnosis, it is found that the migration policy has not been configured for that LUN. Which of the following are NOT the proper methods to solve this issue? A. Do not configure any migration policy, because that it will further slow down the I/O process of the LUN due to migration traffic. B. Configure the migration policy under which the data with less I/O activity can be migrated to the high-performance tier. C. Enable the automatic migration policy for the LUN if there is no special requirement, under which the data can be auto analyzed and migrated accordingly to suitable performance tier. D. Configure the migration process to be done off-peak to prevent further I/O slow down due to data migration during business hours. There is an issue that in the storage system some hosts consume too many resources. Which of the following configuration procedures and measurement indicators are NOT correct? A. Enable the QoS to limit the number of connections to hosts. B. Enable the QoS to limit the maximum IOPS that can be utilized by hosts at a certain time. C. Enable QoS to limit the maximum bandwidth that can be utilized by hosts at a certain time. D. Enable QoS to limit the number of files that can be transferred on each session. In the scenario where only 2 disks are in the RAID group, which one of the following does NOT use data striping? A. RAID 0 B. RAID 1 C. RAID 5 D. RAID 6
A. RAM
В. Hard Disk C. Magnetic Tape D. DVD File system protocols can be either stateless or stateful. Which of the following statements are NOT true regarding the properties of NFS and CIFS? A. NFS is a stateful protocol. B. CIFS is a stateless protocol. C. NFS has higher transmission efficiency than CIFS due to more state information sent during connection. D. CIFS has higher transmission efficiency than NFS. Which of the following are limitations of DAS, compared with SAN? A. Poor scalability B. Large investment C. Difficult resource sharing D. Decentralized management
There is an issue that in the storage system some hosts consume too many resources. Which of the following configuration procedures and measurement indicators are NOT correct? A. Enable the QoS to limit the number of connections to hosts. B. Enable the QoS to limit the maximum IOPS that can be utilized by hosts at a certain time. C. Enable QoS to limit the maximum bandwidth that can be utilized by hosts at a certain time. D. Enable QoS to limit the number of files that can be transferred on each session. Which of the following statements are true about working principles of traditional RAID technologies? A. RAID 1 uses parity disks to protect data. B. RAID 0 uses the striping technology to improve the read/write speed of disk groups. C. RAID 10 is a RAID level that combines mirroring and striping. D. RAID 6 requires at least N+2 (N>=2) disks to form an array. Which statements are NOT true about flash chips? A. In the SLC. one ce can store one bit of data B In the MLC one cell can store two bits of data C In the TLC, one ce I can store four bits of data D. In the QLC one cell can store three oits of data. When an engineer deploys a storage system, the customer requires data recoverability if one disk is faulty. Which RAID levels can NOT be selected by the engineer’ A RAID 0
B RAID 3 C RAID 5
D. RAID 6 Which of the following statements are NOT true about the NVMe protocol? A The NVMe protocol enables the dev>ce to directly communicate with the CPU B The NVMe protocol supports HDDs. C Devices that support the NVMe protocol can be used without insta mg a driver D. The NVMe protocol can be used to transmit the SCSI protocol. An engineer maps the storage system to the file server to store various enterprise files. One day. the file system is attacked by viruses and files cannot be opened. To access the files, the engineer performs a snapshot rollback. Which of the following statements are true? A A snapshot rol oack can Quickly restore data B Some data may be lost during a snapshot rollback C If there are -.'/rites to the source LUN during a snapshot rc back the ro iback is performed after the writes are complete D When no host reads or writes data, the snapshot data is rolled back to the source volume in sequence Download 66,9 Kb. Do'stlaringiz bilan baham:
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