A school has purchased two Huawei OceanStor Pacific series storage devices for service deployment. An engineer wants to configure the distributed parallel client (DPC) on storage devices. Which of the following statements is false about the engineer’s configuration?
AWhen creating a namespace, the engineer needs to select a security style and application type.
BBefore creating a converged storage pool, the engineer must enable the file service for nodes on DeviceManager.
CIf upper-layer services require high data security, the engineer needs to set the storage pool type to “Self-encrypting” when creating a converged storage pool.
DWhen the storage network is a Remote Direct Memory Access over Converged Ethernet (RoCE) network, the engineer can run the “systemctl stop lldpad.service” command to disable the lldpad service.
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The deduplication and compression features of Huawei converged storage systems are widely used in actual production scenarios, especially in virtual desktop infrastructure (VDI) and database scenarios. Which of the following statements is false about data deduplication and compression?
AIn the adaptive deduplication and compression process, if the system detects that the fingerprints are different of the bytes are different after byte-by-byte comparison, the system compresses the data blocks.
BDuring inline deduplication, the system checks whether the fingerprint exists in the fingerprint library. If yes, the system determines that the block is an old block.
CDuring similarity-based deduplication in the background, the background analyzes the similarity-based deduplication opportunity table and performs similarity-based deduplication on data blocks with the same Similar Fingerprint (SFP).
DBackup storage supports deduplication and compression of file systems. For LUNs, only deduplication is supported.
In Huawei flash storage, an administrator is a built-in role that can manage users, upgrade the system, change the system time, power off the device, and restart the device.
ATRUE
BFALSE
During routine management of Huawei flash storage, an engineer can use the “show license_active” command to query information about activated licenses.
ATRUE
BFALSE
An enterprise has purchased several Huawei OceanStor Pacific series storage devices. An engineer wants to configure the CIFs share service on them. Which of the following statements are true about the service configurations?
AAfter CIFs shares are allocated to domain users, the engineer cannot modify the domain user information. Otherwise, the CIFS shares cannot be accessed.
BBefore creating a converged resource pool, the engineer must enable the file service for nodes. Otherwise, subsequent operations cannot be performed.
CIn a domain environment, the engineer needs to create a local authentication user, add the local user to a user group, and use the group for authentication to access a share.
DIf a user’s service network has multiple network segments, the engineer can configure multiple subnets to enable clients in different service network segments to access the storage network.
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In OceanStor Pacific series storage systems, if a node or disk is faulty, data reconstruction in the disk pool can be automatically performed after 15 minutes.
ATRUE
BFALSE
A financial customer has purchased two OceanStor Dorado 18000 series storage devices for service deployment. To ensure service data reliability, an engineer configures the HyperSnap 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)?
Achange snapshot speed
Bchange snapshot flowctrl
Cshow qos snapshot_flowctrl_lun
Dchange snapshot deactivate
An engineer needs to install the hardware of a Huawei flash storage device. Which of the following statements is true about hardware installation?
AWhen removing filler panels from a cabinet, the engineer needs to use flat-head screwdrivers and floating nut hooks to remove M6 screws from filler panels.
BWhen connecting cables of the flash device, the engineer needs to connect AC power cables to the same independent power supply to ensure cable redundancy.
CIf the flash storage device is high-end flash storage device, the engineer needs to connect the ground cable of the cabinet before the external power cable, and install the cabinet after the connection is complete.
DIf the flash storage device is a mid-range or entry-level flash storage device, the engineer needs the installation template to determine the device installation positions after removing filler panels from the cabinet.
In a production environment, a user can use the command-line interface (CLI) or DeviceManager for routine O&M and management on storage devices. Which of the following statements are false about the two tools? (Choose all that apply.)
AWhen using the CLI, the user must comply with its format conventions. For instance, the format [ x | y | …] indicates that at least one option must be selected from two or more choices, and all options can be selected if needed.
BWhen logging in to DeviceManager, the user needs to enter the IP address in the https://xxx.xxx.xxx.xxx:8088 format. If the IP address is not followed by a port number, the login will fail.
CIn the CLI, keywords of commands are in bold, and parameters of commands are in italics.
DGenerally, the user can log in to DeviceManager on any maintenance terminal connected to the storage system by entering the service network port IP address of the storage system and the local or domain user name in a browser.
A government customer has purchased several Huawei scale-out storage devices, and an engineer wants to install the distributed parallel client (DPC). When creating DPC nodes, the engineer can manually add a node by entering the service IP address of the node.
ATRUE
BFALSE
When a basic storage service fault occurs on Huawei flash storage, engineers need to rectify the fault. Which of the following are basic storage service faults? (Choose all that apply.)
AA timeout message is displayed during storage system setting.
BDeviceManager fails to be loaded or is displayed incorrectly.
CAdding an iSCSI link for a remote device fails.
DThe storage system fails to detect initiators provided by HP-UX servers.
A school customer purchases several Huawei flash storage devices for service deployment. To facilitate routine O&M, an engineer deploys the DME IQ service on the storage devices. Which of the following statements are true about DME IQ? (Choose all that apply.)
AWhen configuring the DME IQ service, if HTTPS is selected as a transmission protocol, the engineer needs to enable ports 7448/TCP, 8890/TCP, and 9448/TCP from the network firewall to the Internet.
BThe DME IQ cloud system is deployed in multiple sets to cover different regions and ensure that data is not transferred out of specified regions.
CDME IQ uses AI to dynamically analyze changes in disk logs and disk performance metrics, thus quickly detecting storage network performance problems.
DDME IQ can be used for applications such as service planning and intelligent analysis.
An engineer configures the HyperClone feature on a Huawei OceanStor Dorado 3000 storage system. The secondary LUN is configured with 20 GB and the primary LUN with 10 GB. In this case, reverse synchronization can be implemented. During the reverse synchronization, the capacity of the primary LUN cannot be expanded.
ATRUE
BFALSE
When the HyperReplication feature of Huawei scale-out storage is applied, if the properties of a consistency group are modified, the property modification will be synchronized to each pair in the consistency group. That is, the properties of the consistency group prevail.
ATRUE
BFALSE
A government customer purchases several Huawei flash storage devices to store upper-layer service data. After the storage devices are deployed which of the following commands can the administrator run on the command-line interface (CLI) to query the configuration of the NTP time synchronization function?
Ashow license_active
Bchange ntp_server config
Cshow system ntp
Dshow ntp_server general
A financial customer has purchased several Huawei OceanStor Dorado series storage devices for service deployment. To ensure service data reliability, an engineer configures the HyperSnap feature. Which of the following statements is false about the engineer’s configuration?
AWhen creating a snapshot, if the capacity of a source LUN is 10 GB, the engineer can only select a target LUN whose capacity is also 10 GB.
BBefore creating a snapshot, the engineer needs to import and activate a related license on DeviceManager.
CBefore creating a protection group on DeviceManager, the engineer needs to create a snapshot consistency group.
DAfter a snapshot LUN is created, the engineer can map it to a host.
Which of the following statements is false about the disk enclosure networking principles of Huawei flash storage devices?
AGenerally, the cascading networking for disk enclosures uses the forward connection mode.
BOn a controller enclosure, the interface modules of the two ports that connect to the same disk enclosure usually should be symmetric and use ports of the same ID.
CP0 ports of a disk enclosure are uplink ports and can only connect to the P1 ports of an upper-level disk enclosure.
DThe P1 ports on the expansion modules of a disk enclosure connect to the P0 ports on the expansion modules of a lower-level disk enclosure.
When troubleshooting performance issues of flash storage based on the I/O path, an engineer first needs to analyze the CPU performance of controllers. Generally, Fibre Channel networking consumes more CPU resources than iSCSI networking, and random I/Os consume more CPU resources than sequential I/Os.
ATRUE
BFALSE
If a storage system experiences performance issues, an engineer will optimize the performance based on the performance optimization process. Which of the following statements are false about the sequence of the performance optimization process? (Choose all that apply.)
A
Information collection. 2. Optimization execution. 3. Optimization analysis. 4. Test and application
B
Information collection. 2. Optimization analysis. 3. Optimization execution. 4. Test and application
C
Information collection. 2. Optimization analysis. 3. Test and application 4. Optimization execution
D
Optimization analysis. 2. Test and application 3. Information collection 4. Optimization execution
OLTP is a major application in a traditional relational database and mainly used to process basic and routine transactions. Which of the following statements is false about OLTP?
AFrom the database perspective, reading, writing, and changing of each transaction involve a small amount of data, and access requests from many users are processed simultaneously.
BFrom the storage perspective, data is usually read in sequence, and data of write operations is stored in the temporary tablespace when read operations are being performed.
CIn the OLTP service, the back-end port bandwidth does not need to be monitored.
DIn the OLTP service, special attention is usually required for the average I/O response time and average CPU usage of controllers.
When delivering a Huawei OceanStor Pacific scale-out storage project, an engineer introduced the end-to-end data integrity check technology of scale-out storage to the customer. Which of the following statements are false about this technology?
ABlock, NAS, and object services support end-to-end data integrity check, but the HDFS service does not.
BFor silent data scenarios such as bit change and read offset, the end-to-end data integrity check technology supports logical block addressing (LBA) check of clusters and hosts.
CThis technology enables the storage system to implement periodic background data integrity check. When the service load is heavy or service access is frequent, the system automatically starts periodic background data integrity check and self-healing.
DIn this technology, write requests are checked at the system entry (virtual block service). User data is checked again in the object storage device (OSD) before being written to disks. Data is written to disks only after the data integrity check succeeds.
On the live network, if the primary LUN of a remote replication pair is faulty, the pair relationship between the primary LUN and the secondary LUN is interrupted. In this case, the pair running status must be “To be recovered”.
ATRUE
BFALSE
Huawei OceanProtect X8000 is high-end flash product. A single node is 2 U high and supports 3.84 TB or 7.68 TB SSD data disks.
ATRUE
BFALSE
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.
ATRUE
BFALSE
A financial customer has purchased several Huawei flash storage devices to deploy HyperMetro services. During operation and maintenance, an engineer discovers that the health status of a HyperMetro vStore pair is faulty. This indicates that the running status of the HyperMetro vStore pair is invalid or unsynchronized.
