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1. IOPS is a key indicator to measure storage performance. Which of the following options will not affect the IOPS of the storage system?

Hot spare space size

Hard disk type

RAID level

IO features

2. By checking the operating performance of the storage system through DeviceManager, you can learn the real-time and long-term status of the storage system’s business performance.

True

False

3. Which of the following application scenarios does not belong to the typical application scenarios of Huawei hybrid flash storage?

Automatic hierarchical storage application

Disaster recovery application

Multimedia applications with capacity requirements above the EB level

High-density virtual machine applications

4. Which of the following options is not a feature of distributed storage big data service solutions?

Integrated deployment, storage and calculation are configured in proportion

High performance support EC, better than native HDFS 3.0

Distributed NameNode

EC mechanism that is truly fully compatible with native HDFS semantics

5. When the Smartvirtualization feature is used to host external LUNs in a heterogeneous storage system, and the read I/O request for external LUN data does not go through the heterogeneous storage system, where might the data exist?

Metadata volume of eDevLUN

In the metadata volume of the local LUN

In the data volume of the local LUN

In the Cache of eDevLUN

6. A disaster recovery project adopts Huawei’s full-space snapshot solution at the network layer. A snapshot of the source volume will be created at 9:00, and the snapshot will be created at 9:10. During this process, the source volume has a write operation. Which of the following statements are correct?

The data content of the snapshot volume is the same as the data content of the source volume at 9:00.

The data content of the snapshot volume is the same as the data content of the source volume at 9:10.

The data content of the snapshot volume is the incremental data of the source volume between 9:00 and 3:10.

The snapshot volume is a physical copy of the source volume at 9:00.

7. A colleague is working on an active-active disaster recovery solution. Through testing the bandwidth of the arbitration server to the storage system at both ends is 4Mbit/s, the delay RTT is less than or equal to 40ms, and the packet loss rate is less than or equal to 1%. What will happen to this solution?

Not feasible, because the active-active disaster recovery bandwidth must not be less than 10Mbit/s.

Feasible, because it meets the conditions of the active-active disaster recovery plan.

Not feasible, because the packet loss rate of active-active disaster recovery must be less than or equal to 0.1%.

It is not feasible because the RTT of the active-active disaster recovery delay is less than or equal to 120ms

8. When configuring active and standby disaster recovery, which of the following conditions must be met for the LUNs on the primary and standby arrays?

The size of the secondary LUN must be greater than or equal to the primary LUN.

The backup side needs to be configured with the same RAID level, and the size of the backup side LUN must be the same as that of the primary side LUN.

Only the size of the backup LUN is the same as that of the primary LUN.

The backup side needs to be configured with the same type of hard disk, and the size of the backup side LUN must be greater than or equal to the primary side LUN.

9. Huawei’s end-to-end active-active data center solution is divided into six layers. What are these six layers?

Storage layer, session layer, application layer, network layer, transport layer and physical layer

Storage layer, session layer, application layer, network layer, transport layer and security layer

Storage layer, computing layer, application layer, network layer, transport layer and security layer

Storage layer, computing layer, application layer, network layer, transport layer and physical layer

10. Which of the following descriptions of Huawei’s OceanStor backup solution is wrong?

Compared with disaster recovery, the recovery granularity of backup is finer, files can be used as the recovery level, and multiple recovery versions can be made.

If the format of the source data and the backup data are the same, the backup data can be directly read and written by the host.

The backup software can back up data to tape for offline archiving.

11. Which of the following statements are wrong about the implementation principle of file system snapshots? (Multiple choice)

When creating a file system snapshot, because the snapshot is stored in a new location, the write operation will affect the write performance of the storage LUN

After the file system snapshot is successfully created, if the file system user wants to access the snapshot, he must remount the snapshot directory to access it

File system snapshot is a copy of data generated by the source file system at a certain point in time

The core technology of file system snapshot implementation is ROW

12. Which of the following statements about the features of Huawei HyperMirror are correct? (Multiple choice)

When one of the mirror copies fails, the business on the LUN is not affected in any way, and the host side can still work normally

This continuously protected LUN can be the LUN of a third-party storage system

provides two mirror copies of a LUN, and the data in these two copies is exactly the same

can configure other value-added features for LUNs that are protected by volume mirroring to provide multiple protections for data

13. Huawei’s hyper-converged storage has multiple data security assurance mechanisms. Which of the following statements is correct? (Multiple choice)

Support a variety of EC (Erasure Code) with different ratios

According to the security level, 2 copies or 3 copies can be flexibly configured

Support storage dual-active and asynchronous replication capabilities, and provide cross-site data redundancy protection

PCle SSD Cache technology ensures that data will not be lost after power failure

14. What are the correct statements about Huawei OceanStor 18810 V5 products? (Multiple choice)

Huawei OceanStor 18810 v5 supports the controller 4 cups 3 functions

Huawei OceanStor 18810 v5 supports FC single link upgrade without host multipath perception

Huawei OceanStor 18810 v5 supports front-end and back-end shared interface cards and adopts a fully interconnected hardware architecture

SmartMatrix3.0 supported by Huawei OceanStor 18810 v5 can make Cache mirroring and business pressure more balanced

15. Which of the following descriptions is incorrect about the technical principle of the DCL small bitmap in remote replication? (Multiple choice)

Small bitmap technology can be applied to asynchronous remote replication.

The small bitmap technology can reduce the amount of data copy and the risk of data loss, improve copy performance, and reduce RPO.

Small bitmap technology splits a 64KB Chunk into 16KB Chunk with smaller granularity to record the difference.

According to the principle of small bitmap technology, when there are 6 consecutive different addresses that need to be synchronized, the granularity of the copy at this time is 4KB.

16. A company purchased a set of Huawei horizontally extended file storage to build a file sharing system. At present, the clients of each department use different IP subnets, and the storage administrator configures the front-end service IP addresses of all nodes to belong to the same subnet.

Which steps are correct for the storage administrator to configure the subnet? (Multiple choice)

Set the DNS service IP address for the subnet

Specify the static front-end service IP addresses of all nodes in this subnet

One or more partitions can be defined as a subnet

Specify the dynamic IP address pool used by the subnet

17. What are the basic stages when planning and designing storage projects? (Multiple choice)

Outline design stage

Conceptual design stage

Research phase

Physical design stage

18. In the Huawei storage system, which of the following statements about rolling back HyperCDP are correct? (Multiple choice)

In order to ensure data consistency, the host business needs to be suspended before HyperCDP is rolled back

HyperCDP needs to be in the active state to perform the rollback operation

When the source LUN of HyperCDP is also the primary LUN or the secondary LUN of remote replication, the HyperCDP rollback operation can only be performed after the remote replication pair status becomes “split”

For a source LUN with multiple HyperCDPs, multiple HyperCDP rollback operations can be performed at the same time

19. After purchasing Huawei’s all-flash storage devices, which of the following options must be planned when planning the basic storage business? (Multiple choice)

Disk domain

LUN capacity

Storage pool capacity

Number of LUNs

20. Which of the following options are disadvantages of HDFS components? (Multiple choice)

Does not support remote replication features

Low hardware fault tolerance

File system performance bottlenecks are likely to occur under large-scale deployment

Low capacity utilization and high cost

21. The remote replication feature is mainly used in disaster recovery backup scenarios. Which of the following statements about the remote replication feature are correct? (Multiple choice)

During remote replication, if the replication link fails suddenly, the slave L data will be unavailable.

The remote replication slave LUN can be mapped to the host in advance. When the primary L end fails, it can save business recovery time.

The peak bandwidth of asynchronous replication is higher than that of synchronous replication.

If the disaster recovery solution requires RPO=0, it is recommended to use synchronous remote replication.

22. When planning and designing storage solutions, if customers focus on satisfying performance, which of the following aspects should be planned and designed? (Multiple choice)

Network bandwidth

Hard disk type

Number of hard drives

RAID level

23. When configuring basic storage services on Huawei all-flash storage, which of the following statements are correct? (Multiple choice)

When user application data is stored in multiple LUNs, LUN groups can be created to facilitate management

Before configuring basic services, you must first import the license

If the business host is a cluster, add all the hosts in the cluster to the same host group

If you need to specify a specific port to connect to a business host, you need to create a port group to complete the relevant operations

24. Which of the following statements about N8500 CIFS sharing are correct? (Multiple choice)

If you do not need to distinguish between users who restrict access to the shared directory, you can choose normal sharing

If you do not need to distinguish between users who restrict access to the shared directory, you can choose homeedir sharing

In normal mode, the client can only access the share through a VIP

Compared with the normal mode, the cluster mode has higher data reliability, but lower performance

25. In the Huawei Active-active Disaster Recovery Solution, which of the following are required components? (Multiple choice)

HyperMiror

Quorum server

UltraPath

HyperMetro

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