QUESTION 1
When delivering a flash storage project, Huawei engineers introduced the SmartDedupe and SmartCompression features of flash storage to the customer. Which of the following statements are false about this feature?

A. The adaptive deduplication and compression process of flash storage does not involve similar fingerprints (SFPS), identifies data suitable for inline deduplication based on service data characteristics, and directly performs inline deduplication.
B. During inline deduplication, the system checks whether a fingerprint exists in the fingerprint library. If it does, the system determines that the block is an old block; if it does not, the system determines that it is a new block.
C. Similarity-based deduplication in the background is similar to inline deduplication. Both types of deduplication need to add the mapping relationships, such as the fingerprint, persistent storage location, and reference count of the reference block, to the fingerprint library and then update the mapping.
D. Flash storage supports data reduction only for LUNs and enables adaptive deduplication policies that combine inline deduplication and similarity-based deduplication.

Correct Answer: ACD
QUESTION 2
A government customer purchases multiple Huawei flash storage systems to deploy remote replication services. During asynchronous remote replication of LUNs, engineers need to replicate data at time point x from the primary LUN to the secondary LUN based on data change logs (DCLS). After data synchronization is complete, snapshots of the primary and secondary LUNs are automatically deleted, in this way, storage space occupation is reduced.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 3
The OceanStor Pacific series storage systems support the            feature. This feature uses the classic token bucket algorithm to control the traffic upper limit. If local tokens are insufficient, tokens are continuously generated and added to the token bucket based on the OPS and bandwidth upper limit of the corresponding QoS control object as the rate.

Correct Answer: SmartQoS
QUESTION 4
A government customer has purchased a Huawei scale-out storage device for service deployment. An engineer needs to configure basic FTP share services on the storage device. Which of the following configuration operations are correct?

A. If a client uses the FTPS protocol to access a share, the engineer must set the connection mode to “Implicit FTPS” when setting FTP service parameters.
B. If a client uses the FTP protocol to access a share, the engineer must set the connection mode to “FTP” when setting FTP service parameters.

C. When creating a converged storage pool, the engineer must set the storage pool type to self-encrypting and set the hot spare space of the storage pool.
D. During FTP share configuration, the engineer must create a converged storage pool and account before enabling the file service for nodes. Otherwise, the file service cannot be enabled.

Correct Answer: ABD
QUESTION 5
In an OceanStor 6810 converged storage system, each LUN is divided into slices and then evenly distributed to all of the controllers with the distributed hash table (DHT) algorithm for serial processing. Write requests are written to the global cache, and read requests are prefetched and hit in the global cache.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 6
Huawei OceanStor Pacific series storage systems support the                     client access mode. This mode allows a single client to connect to multiple storage nodes and supports MPI-I/O access. (Enter an acronym.)

Correct Answer: DPC
QUESTION 7
                    uses Huawei’s optimized FlexEC algorithm. This algorithm allows the system to tolerate simultaneous failures of three disks, greatly shortening the reconstruction time and effectively addressing data protection challenges in the large-capacity disk era.

Correct Answer: RAID-TP
QUESTION 8
Huawei flash storage supports the SmartMulti-Tenant feature and provides the isolation capability. That is, one LIF can belong to only one tenant, ensuring that LIF resources are isolated between tenants.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 9
A financial customer has purchased two OceanStor Dorado 18000 series storage devices for service deployment. To ensure service data reliability, an engineer configures the Hyper Snap feature on the storage devices. Which of the following commands can the engineer use to change the snapshot rollback rate on the command line interface (CLI)?

A. change snapshot speed
B. show qos snapshot_flowctrl_lun
C. change snapshot flowctrl
D. change snapshot deactivate

Correct Answer: A
QUESTION 10
Multi-level cache technology is a key technical feature of Huawei OceanStor Pacific series products, which can improve the overall I/O performance of a system. Which of the following statements is false about this technology?

A. In write caching, if 5o0 KB of data is written, the data is directly written to HDDs.
B. In read caching, data is read from the memory write cache first, and then from the memory read cache if the target data is not found in the memory write cache.
C. In write caching, data is written to the RAM-based write cache and then to the SSD write-ahead log (WAL) cache. (For large I/Os, data is directly written to HDDs.)
D. In read caching, the memory read cache caches the prefetched data, and the SSD read cache caches the hotspot data identified during the read process.

Correct Answer: A
QUESTION 11
Huawei scale-out storage provides intelligent aggregation EC and traditional cross-node EC. Which of the following statements are true about the two options?

A. Traditional cross-node EC aggregates large and small I/Os based on intelligent aggregation cache. However, due to fixed address mapping, full stripes cannot be formed, resulting in extra read/write amplification.
B. Intelligent aggregation EC can aggregate any data written at any time into Full stripes.
C. Traditional cross-node EC is based on the append write mechanism and provides high performance for small I/O write.
D. Intelligent aggregation EC implements efficient I/O aggregation based on the append write mechanism without extra read/write amplification.

Correct Answer: ABD
QUESTION 12
In actual service scenarios, the Hyper Metro feature of Huawei OceanStor Pacific series supports incremental synchronization. If a site fails, the site that wins arbitration continues providing services, and I/O requests change from the dual-write state to the single-write state. After the faulty site recovers, data generated during the fault can be synchronized to the recovered site.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 13
Which of the following statements is false about the working principles of HyperReplication?

A. Remote replication can be implemented in synchronous or asynchronous mode. The principle of writing data to the secondary LUN varies according to the mode.
B. In synchronous remote replication mode, a synchronous remote replication relationship is set up between a primary LUN at the production site and a secondary LUN at the DR site, and initial synchronization is started.
C. In synchronous remote replication mode, after receiving a write I/o request from a host, the primary storage system sends the write I/O request to both the primary and secondary LUNs. After data is successfully written to both the primary and secondary LUNs, the write I/O success result is returned to the host.
D. Asynchronous remote replication relies on the snapshot technology. When a host initiates a write request, the storage system returns a write success message to the host only after data is successfully written to the secondary LUN.

Correct Answer: D
QUESTION 14
A scientific research customer has purchased several Huawei scale-out storage devices for high-performance computing (HPC) service deployment. To ensure service performance, an engineer wants to install the distributed parallel client (DPC). Which of the following statements is true about the configuration?

A. The engineer can install the DPC software in an existing container environment. To install the DPC, the engineer needs to configure the container node and install network management components.
B. To enable the function of creating namespaces with the same name for different accounts, the engineer can run the “change space ops cmd=sameFsName args=set, 1” command.
C. When creating a disk pool, the engineer does not need to select the main storage and cache disks, but needs to configure a tier grade.
D. After a converged storage pool is created, the engineer needs to enable the object and HDFS services for nodes in the storage pool. The file service does not need to be enabled.

Correct Answer: B
QUESTION 15
A financial customer has purchased several Huawei OceanStor Pacific storage devices for service deployment. An active directory (AD) domain controller exists on the live network. An engineer configures the object storage service on the storage system and needs to add the storage system to the AD domain controller environment. Which of the following is not a prerequisite for adding the storage system to the AD domain controller environment?

A. A lightweight directory access protocol (LDAP) domain has been set up.
B. The time of the AD domain server and DNs server has been synchronized with that of the storage system.
C. TCP ports 88, 389, 445, 464, and 636 between the storage system and the AD domain have been enabled.

D. All storage nodes are connected to a domain name service (DNS) server.

Correct Answer: A
QUESTION 16
When delivering a flash storage project, Huawei engineers introduced the arbitration mechanism of HyperMetro to the customer. Which of the following statements is false about the arbitration modes?

A. In quorum server mode, the quorum server can be deployed only on physical machines and not on virtual machines.
B. In static priority mode, if the preferred site of a Hyper Metro pair breaks down, the non-preferred site does not automatically take over HyperMetro services. As a result, the services stop, and the customer must forcibly start the services at the non-preferred site.
C. If no quorum server is configured, HyperMetro works in static priority mode. When an arbitration occurs, the preferred site wins the arbitration and provides services.
D. In quorum server mode, if the link between storage systems is down, each storage system sends an arbitration request to the quorum server.

Correct Answer: A
QUESTION 17
A financial customer purchased a Huawei flash storage system for service deployment. An engineer configured the HyperClone feature on the storage system. If the running status of a clone consistency group (CG) is “DiffCopy reverse syncing” or “Unsynchronized”, the engineer cannot delete the clone CG.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 18
Huawei OceanProtect x3000 is an entry-level backup storage system. A single node is 4 U high and has a maximum of two controllers.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 19
The database architecture can be classified into the storage-compute coupled architecture and storage-compute decoupled architecture. Which of the following are defects of the storage-compute coupled architecture?

A. The server lacks the disk health management capability.

B. Services are suspended due to partial congestion, and performance bottlenecks exist.
C. Only cache data is synchronized between the primary and secondary nodes. Log data is inconsistent.
D. Performance and reliability cannot be balanced.

Correct Answer: ABD
QUESTION 20
The multi-tenant feature of Huawei OceanStor Pacific series storage systems can allocate and manage resources by tenant and configure domain controllers. Which of the following are domain controllers that can be configured by tenants?

A. AD
B. NS
C. DNS
D. LDAP

Correct Answer: ABD