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WorksheetsHCIA Storage CertKingdom 296-386
Total questions: 91
Worksheet time: 47mins
An enterprise adopts cloud-level primary and backup data-level disaster tolerance. During business
planning, two types of storage can be divided according to actual needs.
LUN: Protected LUN and unprotected LUN, create VMs that need disaster recovery on the protected
LUN, and configure only the protected LUN
Set up array replication to save the storage space requirements of the disaster recovery center.
True
Among the following options, what is the correct sequence of the basic business configuration process for data center block storage?
6->2->3->4->5->1
6->3->2->4->5->1
3->2->4->5->1->6
4->5->2->3->1->6
The following description of the characteristics of the LAN-FREE backup method is incorrect:
The backup data stream does not occupy LAN resources
The backup proxy does not affect the performance of the application server
Backup performance is usually higher than LAN-BASED
Does not affect user network performance
Description 1: When Windows mounts a CIFS share with the same IP address (domain name or machine name), the same user can You can mount one or more shares at the same time, but you cannot use different users to mount the same or different shares. Description 2: Windows cannot share multiple Home dir shares with the same IP address (domain name or machine name)
Description 1 is correct, description 2 is correct
Description 1 is correct, description 2 is incorrect
Description 1 is wrong, description 2 is correct
Description 1 error, description 2 error
Which of the following descriptions of refactoring is incorrect?
RAID 0,1,3,5,6 and 10 support reconstruction
Reconfiguration does not necessarily require hot spare disks
reconstruction has an impact on RAID performance
Reconstruction will not interrupt RAID business
The dual switch network design is widely used in the FC SAN environment. The following description of the dual switch network redundancy design, Which ones are correct?
Deploy two FC switches in a SAN environment to cross connect to the two controllers of the storage device
Each host requires 2 available FC ports, and connects the two ports to different switches
The host port and storage device port on the switch that need to communicate must be in the same zone
Although there are multiple paths, the dual-switch network only supports link redundancy and does not support load balancing
The data center is an infrastructure built for accessing and carrying server services. According to the business, the data center can be Divided into:
Cloud data center
Enterprise data center
Carrier data center
Internet Data Center
In Huawei storage systems that use RAID 2.0+ technology, a hard disk domain can only contain one type of hard disk.
TRUE
FALSE
A device can only have one WWPN, but it can have multiple WWNNs.
TRUE
FALSE
The following are the key characteristics of cloud computing:
users can self-service on demand
The resource pool used by the user has nothing to do with the exact geographic location of the resource pool
It can quickly and flexibly provide users with capabilities, such as computing power and storage capacity.
Charge based on the actual usage of the user
Two CKs in a CKG of RAID2.0+ can come from the same hard disk.
TRUE
FALSE
What is wrong with the following description of NAS?
NAS devices can use cluster technology for failover
NAS provides a centralized management console, which can effectively manage the file system
Do not allow the NAS to be accessed by multiple clients at the same time
A client cannot connect to multiple NAS devices at the same time
Which of the following is not a backup type?
Full backup
Cumulative incremental backup
Differential incremental backup
real-time backup
Description 1: FC protocol and FCoE protocol have different operating environments, different operating channels, and the same protocol stack. Description 2: FCoE can only run on 10GE, which solves the problems of short FC transmission distance and packet loss in IP networks.
Description 1 is correct, description 2 is correct
Description 1 is correct, description 2 is incorrect
Description 1 is wrong, description 2 is correct
Description 1 error, description 2 error
The following description of IOPS is wrong:
How many times IO can be performed per second, each IO is fixed according to the size of the written data
If the IO writes a large piece of continuous data every time the channel is changed infrequently, what is done every second at this time IO frequency is relatively low
If the head frequently changes lanes, and the data written each time is relatively large, then the IOPS should be the lowest number of this disk value
If the smallest data block is written each time under the condition of infrequent lane change, such as 512 bytes, then the IOPS will be the highest value
When a company's customers need to complete data migration between devices, what features can be used to complete?
Remote replication
LUN copy
SmartMigration
clone
SAN network-based data replication technology is a storage area network between front-end application servers and back-end storage systems. Network (SAN), adding a layer of intelligent switches, the front end is connected to the server host, and the back end is connected to the storage device.
TRUE
FALSE
Semi-structured data is generally self-describing, and the structure and content of the data are mixed and there is no obvious distinction.
TRUE
FALSE
Description 1: A RAID consisting of several hard disks is called a physical volume. Description 2: RAID 5 can improve the read and write rate and provide a certain degree of data security, but when there is a single hard disk failure At this time, read and write performance will be greatly reduced.
Description 1 is correct, description 2 is correct
Description 1 is correct, description 2 is incorrect
Description 1 is wrong, description 2 is correct
Description 1 error, description 2 error
The port selected by the IP drift strategy has nothing to do with the port rate, only related to the location of the port, the order of selecting the port Yes?
1->2->3
2->1->3
3->1->2
2->3->1
What is a measure of storage system performance?
IOPS
Bandwidth
capacity
Delay
Regarding the characteristics of the four disaster recovery modes of active-active, hot standby, warm standby, and cold standby, what is wrong in the following statement?
The data center using cold standby mode has a long RTO and is unpredictable
The data center adopting the HyperMetro mode has the shortest RTO time
When a data center failure causes the service to become unavailable, the hot standby and active-active modes can be automatically switched by software Services, while the warm standby mode requires manual intervention, and the cold standby mode requires manual intervention
Hot standby mode requires the highest software cost
The multipath load balancing strategy used by HUAWEI OceanStor storage products is the default?
Polling
Minimum queue depth
the minimum task
Minimum IO number
Is the following correct understanding of data and information?
Data is a record that reflects the attributes of objective things and a specific form of information
Data refers to information that can be stored and transmitted
Information is data that has been processed to meet the needs of user decisions
Data is the sum of information and data redundancy
Regarding the benefits and necessity of enterprises doing disaster recovery system construction, is the following statement wrong?
Can avoid major losses and reduce corporate risks
Comply with policies and regulations to meet industry regulatory requirements
Can simplify the operation and maintenance work, avoid the impact of emergencies
In areas where fewer natural disasters occur, consider reducing the disaster recovery level
IP drift supports drifting between different types of interface modules.
TRUE
FALSE
A host connected to a switch port cannot belong to multiple zones, but can only be divided into a zone in.
TRUE
FALSE
Hybrid cloud is a solution that uses both private and public clouds.
TRUE
FALSE
What conditions should be considered for device backup bandwidth? (Multiple choice)
the size of the initial data
The daily quantity increment
Backup cycle
Backup staff
In the HUAWEI OceanStor storage system, one LUN can create multiple snapshots, but only one snapshot can be activated.
TRUE
FALSE
When using the NFS protocol, adding clients and setting read and write permissions have an impact on performance.
TRUE
FALSE
The cloudification of IT architecture is from 'separation' to 'convergence'. What does convergence mean?
Convergence of IT infrastructure
Application and server integration
Integration of hardware and software
Multi-application sharing and open 'cloud computer'
What is the correct description of RAID 5 as follows? (Multiple choice)
RAID 5 has a fixed check disk
RAID 5 is verified by XOR algorithm
RAID 5 uses striping to write data
RAID 5 allows up to two member disks to fail simultaneously without data loss
Regarding the steps of SAN synchronous replication, what is the correct order?
(1) The production storage receives the host write request. HyperReplication logs the request. Only the place is recorded in the log Address information, without recording data content. (2) HyperReplication waits for both the primary LUN and secondary LUN write processing results to be returned. If both are written successfully, clear Log; otherwise keep the log, enter the abnormal disconnection state, and then copy the corresponding number of the log address again when starting synchronization According to the block. (3) Write the request to the master LUN and slave LUN. Normally, the LUN is in the write-back state, and the data will be written Cache. (4) Return the processing result of the host write request, which is subject to the processing result of the write master LUN.
B. (1) (2) (3) (4)
C. (2) (1) (3) (4)
D. (4) (2) (3) (1)
A. (1) (3) (2) (4)
The following storage functions can provide customers with data disaster recovery functions: (multiple choice)
snapshot
Cache prefetch
remote replication
Hierarchical storage
Which of the following is wrong about FC SAN network switching technology?
A widely used technology that supports up to 127 devices
The switch can provide simultaneous communication between multiple nodes connected to it
Failure of a node in a zone will not affect the services of nodes in other zones
The switch uses the zone to manage the network partition and provide the best interconnection method
What kind of technology does the OceanStor 5300 V3 expansion controller belong to?
Scale-out
Scale-up
Scale-in
Scale-deep
What is the infrastructure of the data center? (Multiple choice)
Fire protection system
Power supply system
Cabinet system
Comprehensive wiring
Which of the following options is narrowly stored?
Disk
Disk array
Disk cabinet
Tape library
What are the current challenges of disaster recovery? (Multiple choice)
Disaster recovery construction requires expensive investment
Various applications and inconvenient management
The cloudization trend of IT systems is becoming more and more obvious, and many virtual machines also need to provide protection. The current disaster recovery construction is lacking Lack of unified management system
Data sharing and other capabilities are limited by the physical location of the data, and applications and data cannot be separated, and agile applications and Better disaster tolerance
If a company uses an OLTP database, which migration strategy is suitable for SmartTier?
No migration
automatic migration
Migration to high-performance layer
Migration to the low-performance layer
Description 1: There is an interconnection line between the controllers of the storage system. If the controller is broken, it belongs to it. The working controller of the managed LUN will be switched to a working controller. Description 2: The working controller and home controller of a LUN must be unified into one controller.
Description 1 is correct, description 2 is correct
Description 1 is wrong, description 2 is correct
Description 1 error, description 2 error
Description 1 is correct, description 2 is incorrect
After the multi-path software is installed on the host, which of the following descriptions are correct? (Multiple choice)
LUN is automatically mapped to the host
Assist the operating system to access the same LUN through multiple links to avoid logical errors
Improve link reliability and prevent single link failure, thereby avoiding system failure
Establish a SCSI connection between the host and the storage device
Database data belongs to structured data, and audio and video data belong to unstructured data. The growth comes mainly from the rapid growth of unstructured data.
TRUE
FALSE
What is the correct description of the NFS write mode in the HUAWEI OceanStor storage system?
Synchronous mode is to write the shared data to the cache and then to the disk
Asynchronous mode is to write the shared data to the hard disk immediately
The system default is asynchronous write mode
The system default is the synchronous write mode
What is wrong with the following statement about disaster recovery drills?
Perform exercises in accordance with the actual disaster recovery steps
Familiarize yourself with the disaster recovery process through disaster recovery, and exercise business recovery capabilities for disaster
Through disaster recovery exercises, the integrity of the business cannot be checked
Disaster recovery exercises are verification and the most effective means to prove system availability
Is the following description about Quota tree correct?
Quota tree is a first-level directory under the file system
Only administrators can create, delete, rename, etc. through the command line or GUI management interface. Users can delete the empty Quota tree
Quota tree can be renamed and deleted when sharing through agreement
Ordinary users can perform quota management on the number or capacity of files under Quota Tree
In the HUAWEI OceanStor storage system, a customer plans to deploy 3 sets of systems, a set of business systems, to run Oracle database, which requires high random read and write performance; a mail system for daily mail processing; a video system to save long-term archived videos. When creating LUNs for each system separately, the following about Smart Tier policy settings the correct one is? (Multiple choice)
Business system: 1. Initial capacity allocation: priority allocation from the performance layer 2. Data migration strategy: move to the low-performance layer
Mail system: 1. Initial capacity allocation: automatic allocation 2. Data migration strategy: automatic migration
Video system: 1. Initial capacity allocation: priority allocation from capacity tier 2. Data migration strategy: automatic migration
Video system: 1. Initial capacity allocation: priority allocation from capacity tier 2. Data migration strategy: move
When deploying random small IO-based database services on storage, which RAID type should be appropriate? for what?
RAID 10, no write penalty
RAID 5, no write penalty
RAID 10, no read penalty
RAID 5, no read penalty
CKG is composed of multiple CKs on different hard disks of different types in the hard disk domain.
TRUE
FALSE
FCoE is a transmission protocol standard that encapsulates frames in FC in lossless Ethernet and is used to form storage networks Network.
TRUE
FALSE
The OceanStor 6800 V3 frame itself can be configured with four controllers or only two controllers. If configured as dual control The power supply and BBU are fully configured, and the interface cards and controllers are all arranged in the upper row.
TRUE
FALSE
The SmartTier intelligent data grading feature requires three types of hard drives in the storage pool.
TRUE
FALSE
Extent of RAID2.0+ technology is the basic unit of which technology in the storage pool? (Multiple choice)
Application space
Free up space
Statistics
Data migration
What are the following types of disaster recovery at the host layer? (Multiple choice)
application level
database level
array level
logical volume level
FC relies on a dedicated FC network and can easily form storage islands.
TRUE
FALSE
The NAS device performs functions such as file service, storage, retrieval, and file access on the basis of a general-purpose server optimization.
TRUE
FALSE
If an enterprise is backing up data, the data flow does not go through the production server, but through an independent network Transmission, what kind of backup network is used for this kind of backup?
LAN-Base
LAN-Free
Server-Free
NDMP
In a RAID5 composed of three disks, if 10110110 and 11010011 are written simultaneously, Two data disks with the same stripe, then 01100101 will be written to the verification disk.
TRUE
FALSE
An e-commerce website usually has a relatively stable business volume, so I purchased the server and built a private cloud operation During the Double Eleven promotion, the business volume is very large, so we rent the server from the operator's public cloud to share the festival's burden Netherlands, this cloud computing deployment model belongs to?
Public cloud
Private cloud
Hybrid cloud
Community Cloud
In the HUAWEI OceanStor storage system, which protocol is used for the mirror channel between the controllers?
IB
PCI-E
FCoE
iSCSI
The data backed up by the differential backup is relative to the data added and modified after the last full backup.
TRUE
FALSE
There are two descriptions about backups, the correct ones are: Description 1: The disaster recovery solution does not need to consider whether it is backed up on tape or hard disk. Description 2: The backup plan should consider the worst case.
Descriptions 1 and 2 are both correct
Description 1 is right, description 2 is wrong
description 1 is wrong, description 2 is right
Descriptions 1 and 2 are wrong
Regarding OceanStor V3 LUN deletion, what is wrong in the following description?
The deduplication function is used together with SmartCache to accelerate performance
The taken-over heterogeneous array LUN supports block-level deduplication
Deduplication and remote replication cannot coexist on the same LUN
When the LUN is created, the deduplicated LUN is selected and cannot be restored to the state without deduplication.
Use the CIFS protocol to access the share. When the share name and the user name are the same, the shared order of access is:
Query the CIFS share first, if there is no matching share information, then query the Homedir share
Query CIFS share, if there is no query, it will return failure
Query Homedir share first, if there is no matching share information, then query CIFS share
Query Homedir share, if there is no query, it returns failure
A reliable ICT infrastructure, to avoid a single point of equipment failure, or even a single point of personnel problems.
TRUE
FALSE
In the HUAWEI OceanStor storage system, which of the following descriptions about mapping snapshot LUNs is correct?
The snapshot LUN mapped to the host can only be read, not written
The activated snapshot LUN can be mapped to the host for reading and writing
The snapshot LUN can only be mapped to the same host as the original LUN
The description of all options is correct
According to the disaster tolerance effect, the disaster tolerance level can be divided into: (multiple choice)
Data-level disaster recovery
Platform-level disaster recovery
Application-level disaster recovery
Business-level disaster recovery
The following description about the characteristics of the LAN-BASED backup method is incorrect:
The instruction flow passes through the LAN network, the data flow does not pass through the LAN network
The backup proxy will affect the performance of the application server
Backup data is based on LAN, which affects network performance
The backup business needs to be maintained separately, increasing the difficulty of management and maintenance
In the LAN-Base networking, both the service flow and the data flow take the LAN network, and occupy a large bandwidth.
TRUE
FALSE
Xiao Wang, an employee of a company, did the following in the company's storage system: 9:00 Take a snapshot of LUN A and activate it Alive, all the data of the snapshot LUN and the source LUN were modified at 10:00, and the snapshot was rolled back at 11:00. The following instructions are correct? (Multiple choice)
The data in the copy space before COW is 9:00 LUN A
The data in the copy space before COW is 10:00 LUN A data
The data of the source LUN is the modified data at 10:00
After the snapshot is rolled back, the data of the source LUN becomes the data of the modified snapshot LUN at 10:00
What technology is used to convert Thick LUN and Thin LUN?
clone
LUN migration
LUN copy
Volume mirroring
In the Huawei storage system using RAID2.0+ technology, regarding the difference between Thick LUN and Thin LUN, the following Which description is correct? (Multiple choices)
Allocate storage capacity when Thick LUN is created
The storage capacity is not allocated by default when the Thin LUN is created, and the storage capacity is allocated when data is written
Thin LUN is more flexible than Thick LUN, and has better performance during sequential read and write of large IO
Thin LUN makes the entire storage space utilization rate higher
What are the characteristics of big data? (Multiple choice)
A. Write once, modify many times
B. The value of data is uncertain
C. Large capacity and fast growth rate
D. Long storage time
What is wrong with the following description of DAS?
A. DAS refers to the storage device is directly connected to the server through a SCSI cable or Fibre
Channel
B. The data in DAS mode is still scattered, and each application has a set of storage devices.
Management is decentralized and cannot be centralized
C. When the server and the storage device are directly connected, new application requirements
arise, only for the newly added server
D. DAS storage space can be fully utilized, storage devices that can be shared by different application
servers, fully
Leverage idle storage space
In the following backup media, the order of unit capacity price from low to high is:
A. Tape, CD/DVD, SSD, virtual tape library
B. CD/DVD, magnetic tape, virtual tape library, SSD
C. tape, CD/DVD, virtual tape library, SSD
D. CD/DVD, SSD, tape, virtual tape library
What is the description of file-level HyperSnap feature data recovery in HUAWEI OceanStor storage
system, which
Are these correct? (Multiple choice)
A. can restore a single file
B. can restore the original file with logical errors
C. can restore the original file accidentally deleted
D. can restore the file on the file system with physical failure
In a traditional RAID group, when a certain number of hard drives fail, the entire RAID group can
prevent data loss, and
The data recovery process has not been started. What is the status?
A. Normal work
B. Downgrade
C. invalid
D. Refactoring
When the disk is read and written, the sector is the minimum addressing unit, and a segment can be
written to the first half of a sector
Data, and then write a piece of data to another sector.
A. TRUE
B. FALSE
Description 1: The file system of the SAN storage is deployed on the storage side, and the file system
of the NAS storage is on the host side.
Description 2: Dynamic tiered storage can achieve data migration between storage media with
different performance
A. Description 1 is correct, description 2 is correct
B. Description 1 is correct, description 2 is incorrect
C. Description 1 is wrong, description 2 is correct
D. Description 1 error, description 2 error
What are the following errors about OceanStor V3 features?
A. Cloning provides physical full copy, incremental copy
B. Cloning does not support cross-engine LUN cloning, the master-slave LUN must be under the same
engine
C. LUN copy can support data backup and migration within and between arrays (including
homogeneous and heterogeneous)
D. LUN copy supports incremental LUN copy, and LUN copy should be done offline
If the disaster recovery center in the same city fails, the production center in cascading networking
mode will lose all its backup sites.
A. TRUE
B. FALSE
OceanStor V3 series storage can only support iSCSI or FC host links separately, not both
Connect to the network.
A. TRUE
B. FALSE
Which of the following is the correct configuration process for HUAWEI OceanStor storage system?
A. Create storage pool -> create LUN -> add mapping
B. Create storage pool -> add mapping -> create LUN
C. Create LUN->Create storage pool->Add mapping
D. Create LUN->Add Mapping->Create Storage Pool
The x86 architecture is a type of data center infrastructure
A. TRUE
B. FALSE
When the disk is not accessible, what kind of reconstruction method is used when writing to the
disk?
A. Total reconstruction
B. Local reconstruction
C. recovery and reconstruction
D. Local reconstruction
Which mirroring scenarios are mainly used in HyperMirror? (Multiple choices)
A. Mirroring of two LUNs in this array
B. Cooperate with the heterogeneous virtualization function to realize the mirroring of the LUN of
the heterogeneous array and the array
C. Cooperate with the heterogeneous virtualization function to realize the mirroring of two
heterogeneous LUNs
D. The mirrors of the two LUNs of the volume mirror are not under the same home controller
Backup is concerned with data recoverability, and disaster recovery is concerned with business
continuity.
A. TRUE
B. FALSE
In a Linux system, if the representation of a SCSI target is: 2:1:0:3, the following description is correct:
(this question For multiple choice questions)
A. The device LUN ID is 3
B. The bus ID is 0
C. The target ID is 3
D. LUN ID is 0
Which of the following is the advantage of object storage? (Multiple choice)
A. Object interface, flexible data segmentation
B. External SCSI or file interface
C. Flat objects, easy to access and expand
D. Improve data integrity and security
What are the maintenance items of the data center storage administrator? (Multiple choices)
A. The first maintenance project
B. Weekly maintenance projects
C. Daily regular maintenance projects
D. Real-time maintenance project
