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WorksheetsLMS-Infosyte Test-2
Total questions: 53
Worksheet time: 28mins
A NAS storage system has its own file system. Select one.
True
False
Which of the following is not a basic step of data processing?
Processing
Output
Input
Sorting
RAID 5 divides data into blocks and concurrently writes/reads data to/from multiple disks to improve disk access efficiency. Select one.
True
False
Which of the following RAID technologies delivers the lowest disk utilization when ten 2 TB disks are configured?
RAID 1
RAID 3
RAID 5
RAID 0
Which of the following statements are correct about the evolution of mid-range storage architectures? Select all that apply.
The dual-controller active-active architecture can be used.
Interface hardware is usually modular.
Both NAS and SAN protocols are supported.
The mid-range storage provides fixed interface configuration.
Which of the following indicators are used to measure HDD performance? Select all that apply.
Rotational speed
Data transfer rate
Disk capacity
Average access time
Scale-up is the process of adding storage components into existing storage systems to improve the capabilities of multiple nodes and expand capacity to handle data growth. Select one.
True
False
In Huawei RAID 2.0+, a CKG is a logical storage unit comprising chunks from different disks in different disk groups, based on a RAID algorithm. Select one.
True
False
Which of the following statements about IP SAN and FC SAN is incorrect?
FC SAN is compatible with all IP network devices.
The cost of IP SAN is relatively low.
The cost of FC SAN is relatively high.
IP SAN uses existing IP networks.
Which of the following statements are correct about the scale-up of a U SAS disk enclosure?
In a loop, the EXP port of an upper-level disk enclosure is connected to the PRI port of a lower-level disk enclosure.
Expansion module A uses forward connection, whereas expansion module B uses backward connection.
Expansion module A connects to controller A and expansion module B connects to controller B.
The number of cascading disk enclosures cannot exceed the preset threshold.
The disk enclosure in the storage system connects to the controller enclosure and other disk enclosures through the system subrack.
True
False
Which of the following purposes is the front-end 25 Gbit/s RoCE module of OceanStor Dorado V6 used for?
SAS disk enclosure connection
Application server connection
HyperMetro arbitration
Smart disk enclosure connection
REST uses the HTTP protocol and URI to add, delete. modify and query resources using the client/server model.
True
False
Which of the following statements is correct about serial and parallel transmissions?
With low speeds and low costs, parallel transmission is suitable for short-distance transmission
With low speeds and low costs, serial transmission is suitable for long-distance transmission
With fast speeds but high costs, serial transmission is suitable for short-distance transmission
With fast speeds but high costs, parallel transmission is suitable for long-distance transmission
According to the interface types, HDDs can be classified into ATA and SCSI disks. Which of the following statements are correct?
SCSI disk yield higher reliability over ATA disks
SCSI, SAS and Fibre Channel disks use the SCSI mechanical base and are suitable for single-task processing
ATA disks overheat during multi-task processing due to the frequent movement of the read/write head
SCSI disks provide faster processing than ATA disks under high data throughput
Which of the following statements about Ethernet, logical and bond ports is incorrect?
A bond port can be created based on multiple Ethernet ports
A logical port can be created based on multiple Ethernet ports
Multiple logical ports can be created based on an Ethernet port
Multiple logical ports can be created based on a bond port
Software RAID and hardware RAID each use independent processors
True
False
What are the types of SSDs?
MLC
TLC
SLC
QLC
The controller CPU and cache process I/O requests and manage storage system RAID
True
False
Huawei storage supports the full-mesh architecture. Which of the following are supported?
Front-end full interconnection
Back-end full interconnection
Full interconnection using gateways
Full interconnection among controllers
Disks can be classified into enterprise-grade and desktop-grade disks according to their usage
True
False
Which of the following statements about the NAS architecture are correct?
NAS uses network and file sharing protocols for arhiving storage
NAS sharing is based on files
NAS does not require multiple file servers
UNIX and windows users can share the same data through NAS
The optical module rate must be consistent with that on the interface module label. Otherwise, the storage system reports an alarm and this port is unavailable
True
False
Both RoCE and iWARP are RDMA technologies. Which of the following is used to implement RoCE and iWARP?
Ethernet
FC network
IB network
IPX network
Which of the following statements are correct about SSDs and traditional HDDs?
HDDs are more shockproof and drop-resistant.
SSDs provide a faster read/write speed.
SSDs generate more noise than HDDs.
SSDs consume less power than traditional HDDs.
The SCSI protocol is essentially independent of the underlying transmission media. Select one:
True
False
Which of the following storage network architectures can provide file-level sharing services for hosts?
FC SAN
DAS
IP SAN
NAS
In the flash medium chip technology, QLC is cheaper than TLC and supports frequent rewriting, whereas SCM provides high-speed read/write and is suitable for server memory. Select one:
True
False
In Huawei OceanStor Dorado V6 product series, which color indicates a powered-on location indicator of a disk enclosure?
Green
Blue
Yellow
White
An enterprise creates snapshots for service LUNs hourly to ensure security of service data on its storage devices. At 11:30 a.m., a new employee mistakenly deletes data generated at 9:30 a.m. To retrieve the deleted service data and minimize service data loss, snapshots generated at which time point should be restored?
11:00
12:00
9:00
10:00
Which of the following components are included in a LUN?
Data volume
Metadata volume
Virtual data volume
Copy volume
Huawei hybrid flash storage provides multiple protection technologies. Which of the following are data protection technologies?
Data pre-copy
Coffer disk
Bad sector repair
Power failure protection
Huawei hybrid flash storage products consist of controller enclosures and disk enclosures, to provide an intelligent storage platform with high reliability, high performance, and large capacity. Select one:
True
False
Which of the following statements about FlashLink@ are correct?
Efficient RAID
Low latency
Hot and cold data separation
Intelligent multi-core technology
Which of the following is the protection object of HyperLock?
File system
LUN
Disk
Host
A file protected by WORM enters the read-only state immediately after data is written to it. Select one:
True
False
SmartDedupe is a data downscaling technology that deletes redundant data blocks in a storage system to save physical storage capacity, meeting increasing data storage needs. Select one:
True
False
Which of the following functions is not supported when a host is added to a SmartQoS policy?
Traffic control management
A host can be added to only one policy.
Burst traffic control management
Lower limit guarantee
Deduplication is a data reduction technology that compresses large-size data blocks to reduce the used physical storage space, thereby meeting the increasing need for storage capacity. Select one:
True
False
Huawei FusionCube converged compute, network, and storage devices in an out-of-the-box package, eliminating the need to purchase extra storage or network resources. Select one:
True
False
Which of the following storage services are supported by Huawei scale-out storage products?
HDFS service
Object service
Block service
File service
Which of the following are characteristics of snapshots?
Quick restoration
Backup and archiving
Instant generation
Cross-device protection
Which of the following data storage products does Huawei provide?
Hyper-converged storage
Hybrid flash storage
Backup storage
All-flash storage
Scale-out storage
In Huawei hybrid flash storage systems, which of the following designs protect data after a controller fault?
The storage system uses the mirroring memory technology. If one controller is faulty, the other controller takes over services.
The storage system uses the disk pre-copy technology. It routinely checks hardware status and migrates data from any failing disk.
The storage system provides built-in BBUs to supply power to controllers in the event of an unexpected power outage.
The storage system employs innovative RAID 2.0+ underlying virtualization for automatic disk load balancing.
A snapshot is a point-in-time copy of source data that is accessible to hosts and used for data backup. Select one:
True
False
Which of the following statements about snapshots of Huawei storage (such as Huawei OceanStor hybrid flash storage) is incorrect?
After a snapshot is created, space re-allocation is not required for overwriting during the redirect-on-write (ROW) process.
A snapshot can be generated instantly to quickly obtain a consistent copy of an original LUN.
After a snapshot LUN is mapped to a host, data can be read and written.
When a snapshot is not activated, the data I/O write process is the same as when no snapshot is created.
If a host writes data to a SmartThin LUN but no space is allocated in the pool, the capacity-on-write technology is used to allocate actual storage space from the pool, and the direct-on-time technology is used to establish the mapping between the logical and the actual storage space. Then, the data is written to the allocated actual storage space. Select one:
True
False
HyperCDP objects cannot be mapped to a host directly. To read data from a HyperCDP object, you need to create a duplicate for it and map the duplicate to the host. Select one:
True
False
Which of the following layers is not included in the OceanStor Pacific block storage system architecture?
Storage network layer
Storage service layer
Storage engine layer
Storage driver layer
Which of the following statements about snapshot activation configuration are correct?
Batch activation can be performed for selected snapshots.
Batch cancellation of immediate activation cannot be performed for selected snapshots.
Snapshots are activated immediately by default.
Snapshots can use duplicate names.
During routine inspection, an O&M engineer finds that an alarm is generated on a storage device and performs quick maintenance. Which operation is incorrect?
Check the system performance and handle related exceptions.
Check the indicator status and rectify related faults.
Check the service status and rectify related faults.
Restart the storage device.
DeviceManager is a piece of Huawei management software designed for a single storage system. It can help you easily configure, manage, and maintain storage devices. Which of the following are provided by the software?
Device performance monitoring
Data protection feature management
Alarm management
Storage resource allocation
A tool provides multi-vendor device adaptation for unified management of the following: hardware devices such as servers, storage devices, and network devices, server OSs, and virtual resources. It adopts a component-based architecture to facilitate on-demand construction of enterprise O&M platforms, and lightweight design and web clients to reduce system maintenance and upgrade costs. Which of the following options best describes this tool?
SmartTool
eService
eSight
SmartKit
