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WorksheetsLMS-Infosyte Test-11
Total questions: 60
Worksheet time: 30mins
Correct statements about SmartMatrix architecture in Huawei flash storage systems:
Business is transferred to a mirror controller if one controller fails
Storage pools are evenly distributed across all controllers, managed by RAID 2.0+
Controllers in a single engine can access any disk through fully interconnected SAS3.0 I/O modules
Front-end interface cards can be accessed by all controllers in the control frame
Structures in SCSI architecture:
Transmitter
Target
Initiator
Collector
Correct statements about hybrid flash multi-plane system design:
Business plane’s GE channel for data transmission
PCIe exchange channel as a backup for GE exchange channel failure
Redundancy between planes; control plane can transmit data if business plane fails
Business plane connects host I/O channels, disk I/O channels, and GE exchange channel
Huawei storage solutions:
Disaster recovery solutions
Backup solutions
Archiving solutions
Replication solutions
Engineer A discovered an abnormality in the storage system during routine inspection. They called Huawei technical support, which guided Engineer A in collecting information from the business host. The operating system of the business host is Linux. Which of the following commands are correct for collection?
Execute 'upadmin show upconfig' to check multipath configuration
Execute 'service firewall stop' to stop the firewall
Execute 'upadmin show vlun' to query information on all or specified virtual disks
Execute 'rpm -qa | grep UltraPath' to check if the multipath software is completely installed. If the system displays UltraPath-related information, it means it is installed.
Regarding eSight, which of the following statements are correct?
eSight uses a component-based architecture, allowing customers to select required components based on their needs
eSight supports unified management of Huawei servers, storage, virtualization, switches, routers, WLAN, and firewalls
eSight uses a B/S architecture
eSight only supports management of Huawei devices
Regarding RAID 5, which of the following scenarios will result in data loss?
Two disks fail simultaneously in different RAID 5 groups
Three disks fail simultaneously in different RAID 5 groups
Two disks fail simultaneously in the same RAID 5 group
Three disks fail in the same RAID 5 group
Regarding the advantages and disadvantages of disaster recovery technologies at the host, network, and array layers, which of the following statements are correct?
Host-level disaster recovery replication will occupy some host resources and affect the application system
Initial cost of network-level disaster recovery is relatively low, and there are many vendors providing solutions
Array-level disaster recovery requires arrays at both ends to be from the same manufacturer, which cannot solve heterogeneity issues
Host-level disaster recovery is implemented at the host end, so there is no need to consider compatibility between underlying devices
Through which protocols can DME Storage interface with the customer’s existing operation and maintenance platform and various cloud management platforms?
Restful
Redfish
SNMP
SSH
A company plans to deploy a disaster recovery system that requires business continuity and no data loss in the event of a data center-level failure. They plan to adopt a two-site three-center interconnection architecture. Which of the following schemes cannot meet the requirements?
Two-site three-center architecture based on dual-center active-passive mode
Two-site three-center architecture based on dual-center mutual backup mode
Two-site three-center architecture based on dual-center active-active mode
Local high-availability architecture based on active-passive mode
The new generation of Huawei hybrid flash storage supports which of the following back-end interfaces?
100Gb RDMA
32Gb FC
12Gb SAS
25Gb RDMA
An employee named Xiao Wang performed the following operations on the company’s storage system: 9:00 took a snapshot of LUN A and activated it, 10:00 modified all data in the snapshot LUN and source LUN, 11:00 performed a snapshot rollback. Which of the following statements are correct?
The data in the COW write-before-copy space is from 9:00 LUN A
The data in the COW write-before-copy space is from 10:00 LUN A
The data in the source LUN is from 10:00 after modification
After the snapshot rollback, the data in the source LUN becomes the data of the snapshot LUN at 10:00 after modification
A company has various businesses such as email and network disks, and storage space is limited. They plan to use SmartThin technology to optimize storage space. Which of the following statements about SmartThin are correct?
SmartThin virtualizes storage resources
SmartThin does not pre-allocate all space but presents a capacity form greater than the physical storage space to the customer
SmartThin implements on-demand allocation
SmartThin does not support creating LUNs larger than the maximum physical available space of the storage pool
Regarding Extents in Huawei RAID 2.0+, which of the following statements are correct?
Extent sizes can vary between different storage pools
The minimum allocation unit for thick LUNs in a storage pool
An Extent belongs to either a Volume or a LUN
Extent sizes can be set when creating a storage pool
Based on change in backup data volume, backup types can be divided into:
Real-time backup
Full backup
Incremental backup
Differential backup
Regarding the application scenarios of SmartQoS technology, which of the following statements are correct?
In scenarios where business pressure far exceeds the system’s normal processing capacity, SmartQoS can reduce the performance impact on high-priority businesses through priority order control
In systems with multiple businesses of varying importance, SmartQoS can configure lower-bound assurance strategies for critical businesses with clear performance goals
SmartQoS features are suitable for mixed application scenarios with high pressure and multiple businesses
In scenarios where online and backup businesses are mixed, SmartQoS can limit the maximum burst flow of backup businesses to reduce their performance impact on online businesses
Factors affecting the performance of mechanical hard disks include:
Single platter capacity
Rotational speed
Interface speed
Seek speed
Which of the following statements about IP SAN and FC SAN are correct?
IP SAN can achieve local and remote disaster recovery at a lower cost
FC SAN technology and management are more complex
The hardware and software costs for disaster recovery in FC SAN are high
IP SAN theoretically has no distance limitation
Which of the following statements about Thin LUN are correct?
After enabling SmartThin, users can create Thin LUNs larger than the maximum physical available space of the storage pool
Thin LUNs cannot be directly converted to thick LUNs
All LUNs in a storage pool need to enable the SmartThin feature
Thin LUNs consume very little storage capacity upon creation
What states are defined for files in the WORM file system?
Append state
Expired state
Locked state
Initial state
Huawei hybrid flash storage supports which of the following advanced data protection technologies?
Remote replication
Snapshot
LUN copy
Volume mirroring
Which interface modules in OceanStor Dorado V6 can be used for Scale-Out connections?
100Gb RDMA
40GE
100GE
25Gb RDMA
Which of the following types can be implemented by SCSI protocol links?
FCOE
iSCSI
FCP
SAS
Regarding the software architecture of Huawei OceanStor all-flash storage, which of the following statements are correct?
The management function control software can manage the storage system
The basic function control software can implement basic data storage and read/write functions
It supports intelligent hierarchical classification of hot and cold data into different storage tiers
The value-added function control software can implement various advanced functions such as backup, disaster recovery, and performance tuning
A bank's IT storage equipment was moved, and a mechanical hard drive failed to read data. The engineer diagnosed the failure as caused by the hard drive. What could be the possible reasons?
Flash memory chips are damaged
The read/write head was damaged from a drop
Control circuit shorted and burned out
The read/write head scratched the disk platter due to displacement
In Huawei all-flash storage devices, which operations are included in SmartQos configuration?
Delete SmartQos policies
Add new LUN objects to SmartQos policies
Remove LUN objects from SmartQos policies as needed
Modify SmartQos policies
Activate and deactivate SmartQos policies
What types of flash memory chips are included in SSD hard drives?
TLC
MIC
SLC
QLC
What components make up a LUN?
Data volume
Metadata volume
Virtual data volume
Copy volume
Regarding snapshot activation configuration, which of the following statements are correct?
Snapshot names can be duplicated
Selected snapshots can be activated in bulk
The system defaults to immediate activation
Selected snapshots cannot be bulk deactivated from immediate activation
Storage management allows users to query, set, manage, and maintain storage systems via management tools. Which of the following are included in specific management tasks?
Device performance monitoring
User management
Data protection feature management
Alarm management
Storage resource configuration
In a SCSI-based DAS architecture, what are the roles of a SCSI card?
Conversion between server internal IO and SCSI protocol messages
Implementation of physical connection between server and storage IO
Permanent data storage
Timed data backups
Compared to the traditional PCI bus, what are the advantages of PCI Express?
Compatible with PCI, backward compatible with PCI software
Error handling and error reporting capabilities
Dual-channel, high bandwidth, fast transmission rates
Support for hot-swapping
A television station uses a Huawei hybrid flash storage device with FC networking to store videos. Recently, video playback has occasionally been stuttering. Engineer A went on-site to troubleshoot. Which of the following are correct troubleshooting steps?
Check if the client status is normal and if resource constraints are causing the stuttering
Check for RAID group degradation alerts
Check the client firewall port status
Check the storage device fault alert indicator
Which of the following statements about storage expansion are correct?
Scale-Out technology can increase both storage performance and capacity
Scale-Up technology requires adding more storage devices to increase capacity
Scale-Out device nodes can be within the same domain
Scale-Up technology is horizontal expansion, while Scale-Out technology is vertical expansion
Which components are included in NAS devices?
NFS and CIFS protocols
Disk resources using industry-standard storage protocols
One or more network interface cards
NAS engine
Regarding the evolution of mid-range storage architecture, which of the following statements are correct?
Dual-controller evolved to AA architecture
Mid-range storage interfaces have always retained fixed configurations
Interface hardware is generally modular
Supports multi-protocol NAS and SAN
Distributed storage can distribute data across multiple independent devices. Which of the following are advantages of distributed storage?
Excellent performance
High performance snapshots
High-performance link integration
Global load balancing
A design company purchased a NAS file storage system and configured CIFS shared services. What can this device achieve?
Assign different access permissions to employees based on their roles
Support file sharing among project team members
Centrally manage business of all departments
Help designers back up data materials
In SCSI communication, there is an initiator that initiates I/O requests. Which of the following can serve as initiators?
SCSI disk array
Initiator driver
iSCSI HBA card
TOE card
In the DeviceManager License management interface, which of the following License operations can be performed?
Update License
Import License
Activate License
Uninstall License
Regarding RDMA (Remote Direct Memory Access), which of the following statements are correct?
Low response
Low OS resource usage
High throughput
Low latency
What synchronization types are available in asynchronous remote replication?
Manual
Automatic
Timed waiting after synchronization starts
Timed waiting after synchronization completes
By selecting and downloading "HSSD logs" in the DeviceManager operation interface, which of the following information can be collected?
Fault information
Disk operation logs
S.M.A.R.T and other log information
I/O statistics and lifespan
Which protocols are commonly used in NAS storage networks?
NFS
FTP
NDMP
CIFS
In Huawei hybrid flash storage systems, what designs can protect data when a controller fails?
The storage system uses innovative RAID 2.0+ underlying virtualization technology for automatic disk load balancing.
The storage system provides built-in BBU modules that continuously supply power to controllers in the event of a power failure or sudden power outage
The storage system uses mirrored memory technology, where another controller takes over the business if one controller fails
The storage system uses disk pre-copy technology to proactively migrate data from disks that are identified as having potential failure risks
Huawei offers a comprehensive range of data storage products. Which of the following series are included?
All-flash storage
Dedicated backup storage
Hybrid flash storage
Hyper-converged storage
Distributed storage
In Huawei storage systems, what snapshot technologies are included?
DCL
ROW
COW
CDP
Regarding the characteristics of snapshots, which of the following statements are correct?
Instant creation
Low storage space usage
Zero backup window
Long backup window
Huawei distributed storage products support which of the following storage services?
Block service
HDFS service
Object service
File service
DeviceManager is a Huawei single-device management software that can easily configure, manage, and maintain storage devices. Which of the following are its functions?
Storage resource allocation
Device performance monitoring
Data protection feature management
Alarm management
Regarding Huawei dynamic RAID algorithms, which of the following statements are correct?
After a block in a RAID group fails, it recovers and migrates the failed block data, shields the failed block, and reconstructs a new RAID group using the remaining blocks
The dynamic RAID algorithm is also suitable for scenarios where mechanical hard drives and SSDs are mixed
The algorithm can dynamically adjust the number of data blocks in RAID to meet system reliability and capacity requirements
It can fully and effectively utilize all Flash space
SmartThin is suitable for the following application scenarios:
In a system with various businesses of differing importance, it can configure lower-bound assurance strategies for critical businesses with clear performance goals, ensuring the quality of service for these businesses during resource contention or system faults
For businesses where the growth rate of application system data cannot be accurately assessed, SmartThin can allocate physical storage space on demand to avoid waste
In a system with mixed business systems with varying storage needs, SmartThin can allow different businesses to compete for physical storage space, optimizing physical storage space allocation
For systems with high requirements for business continuity, SmartThin allows online system expansion without interrupting business
Distributed storage networking includes the following options:
Front-end business network
Management network
Back-end storage network
Back-end business network
Huawei RAID 2.0+ technology involves which of the following concepts?
CK
CKG
Extent
Grain
RAID 50 is a RAID level that combines RAID 5 and RAID 0. Which of the following statements about RAID 50 are correct?
Disk utilization is higher than RAID 5 and RAID 0
Data read performance is higher than RAID 5
RAID 0 is implemented first, then RAID 5
RAID 5 is implemented first, then RAID 0
Data processing involves reorganizing or reordering data by humans or machines to increase its specific value. What basic steps are included?
Input
Output
Processing
Collection
Which of the following statements about NVMe are correct?
The NVMe standard targets PCIe SSDs
It is a non-volatile memory standard
NVMe is a standard interface protocol customized for PCIe SSDs
Using native PCIe channels to connect directly to the CPU can avoid the latency of external controllers for SATA and SAS interfaces
When creating a LUN snapshot, which parameters need to be set?
Whether to activate the snapshot
Snapshot description
Snapshot name
Save location
The development of storage technology pursues the following characteristics:
Improve resource utilization
Data sharing
Security
Distance extension
Huawei hybrid flash storage can provide multiple protection technologies. Which of the following are data protection technologies?
Support for bad sector repair
Support for safe deposit box disk
Support for power failure data protection
Support for data pre-copy
