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WorksheetsHCIA Storage CertKingdom 201-300
Total questions: 100
Worksheet time: 50mins
What is the main difference between mechanical drives such as SAS with solid state drives(SSD)?
The presence of mechanical parts.
The performance of the hard drive.
The capacity of hard drive.
The lifespan of hard drive.
Statement 1: Virtual Tape libraries allow for a highly scaleable backup strategy as storage can be added later. Statement 2: Virtual Tape Libraries should be used when remote datacenters are NOT available.
Statements 1 and 2 are both true.
Statement 1 is true and statement 2 is false.
Statement 1 is false and statement 2 is true.
Both statements 1 and 2 are false.
Big Data refers to the process of collecting/ processing and analyzing vast amount of data and information to gain valuable insights.
TRUE
FALSE
Incremental backup requires the last full backup and each incremental backup to fully restore data. Data reconstruction is therefore slower compared with full backups.
TRUE
FALSE
In a good Disaster Recovery Plan there are no single points of failure, not even with any single person.
TRUE
FALSE
Which of the following occurs after multipathing software is installed on a host? (Multiple Choice)
Maps a LUN to the host
Avoids logical errors from occurring in the operating system as a result of multiple reachable paths to the same LUN.
Improves link reliability and prevents the failure of a single link from causing a system failure.
Sets up connection between a storage device and the host.
Statement 1: For RAID 2.0+ to work optimally multiple disk domains must be created. Statement 2: A disk domain with 100 disks in it has better RAID 2.0+ protection and performance characteristics than a disk domain with 50 disks.
Statements1 and 2 are both true.
Statement 1 is true and statement 2 is false.
Statement 1 is false and statement 2 is true.
Both statements 1 and 2 are false.
Which of the following statements about pre-copy is incorrect?
Pre-copy is the process of copying data from a failing member disk to a hot spare disk.
Data to be pre-copied must be reconstructed and calculated.
Pre-copy greatly reduces the risk of data loss.
Pre-copy requires hot spare disks.
Statement 1: A disk drive with a high latency performs better than a disk drive with a low latency. Statement 2: A smaller seek time means that the disk performs better.
Statement 1 and 2 are true.
Statement 1 is true; Statement 2 is false.
Statement 1 is false; Statement 2 is true.
Statement 1 and 2 are false.
Which of the following statements is incorrect?
A RAID group is like a physical volume that consists of multiple disks.
One logical volume can be created on a physical volume.
Multiple logical volumes can be created on a physical volume.
A LUN can reside on multiple RAID groups.
The storage controller can only provide processing and caching functions.
TRUE
FALSE
It provides connection between sets of nodes and allows the connected devices(nodes) to communicate with each other but it is not a device. Which of the following fits the above description?
Host.
Network.
Storage Array.
Switch.
Which of the following best describes SDN?
Using a software program to manage your network.
The virtualization of network services to achieve better efficiency and scalability.
Decoupling of the data plane and control plane in networks.
Using hardware to manage the network.
When the RTO is 10 minutes the traditional Tape Backup method cannot be used.
TRUE
FALSE
Which of the following dimensions are often used to express the data used in Big Data scenarios? (Multiple Choice)
Variety
Volume
Velocity
Verticality
In an ICT infrastructure the servers can run different operating systems like Windows, Linux, AIX.
TRUE
FALSE
HyperReplication for HUAWEI OceanStor can use FC links between the data centers. iSCSI links are not supported.
TRUE
FALSE
Which of the following statements is true? (Multiple Choice)
A SAS disk generally has more IOPS than a SATA disk.
only SLC SSD are used in Enterprise level systems.
the realized transfer speed of SSD is higher than that of SAS.
SSD are cheaper than HDD because they are physically much smaller.
Which of the following statements about reconstruction is incorrect?
RAID 0,1, 5, 6, and 10 support reconstruction.
Reconstruction requires hot spare disks.
Reconstruction affects system performance.
Reconstruction does not interrupt system services.
Statement 1: NAS solutions are always file based. Statement 2: NAS solutions are mostly limited in distance because Ethernet cables are used.
Statement 1 and 2 are true.
Statement 1 is true; Statement 2 is false.
Statement 1 is false; Statement 2 is true.
Statement 1 and 2 are false.
Synchronous replication in OceanStor V3 devices is based on the snapshot technology.
TRUE
FALSE
Which is the correct formation order of the following elements in RAID 2.0+?
LUN -> CK -> CKG -> Extent -> LD
LD -> CKG -> CK -> Extent -> LUN
LD -> CK -> CKG -> Extent -> LUN
LD -> Extent -> CKG -> CK -> LUN
Which of the following is not the benefits of converged storage systems?
The same device is able to provide both block storage and file storage.
Saving of rack space due to integration of equipment into one device.
Converged storage system has better data protection compared to other non-converged systems.
Unified management of storage resources.
The only cable type that can be used to connect disk enclosures is the mini SAS cable.
FALSE
TRUE
Based on common ICT architecture, what effect does network latency have on the performance of networks?
Low latency will cause network performance to drop.
Higher latency has better network performance.
Higher latency allows more data to be transmitted.
Low latency allows quicker data transmission in networks.
Which statement is true?
An extent can be as small as 512 kB and as large as 128 MB.
An extent can be 128 MB, but a grain is always 64 kB.
An extent can be as small as 64 MB and as large as 512 MB.
An extent can be as small as 512 kB and as large as 64 MB.
Statement 1: RAID 2.0+ is NOT based on traditional RAID technologies. Statement 2: RAID 2.0+ has excellent rebuild characteristics.
Statement 1 is false and statement 2 is true.
Statement 1 is true and statement 2 is false.
Statements 1 and 2 are both true.
Both statements 1 and 2 are false.
Statement 1: MLC drives are optimal when used for high intensity writes to that disk. Statement 2: The latency of SSD drives is about 0.1 s.
Statement 1 is false; Statement 2 is true
Statement 1 and 2 are true
Statement 1 is true; Statement 2 is false
Statement 1 and 2 are false
Statement 1: A port can be listed in multiple zones. Statement 2: A switch configuration can contain multiple zones.
Statement 1 and 2 are true.
Statement 1 is false; Statement 2 is true.
Statement 1 is true; Statement 2 is false.
Statement 1 and 2 are false.
Which of the following operating systems supports the CIFS protocol natively?
Solaris
AIX
FreeBSD
Win7
Select the correct statements that describes the properties of bus technology in ICT architecture. (Choose all that apply.)
Bus technology are only available in serial form.
Bus can be divided into internal bus and external bus.
The CPU needs to go through the memory to directly access the Bus.
Bus is a communication system that transfers data between internal components and external components.
What are components of an ICT infrastructure? (Choose all that apply.)
Software
Hosts and Servers
Backup Devices
Network switches
Which of the following is NOT a component in an IP SAN?
iSCSI storage device
Fibre Channel switch
Ethernet switch
NIC
Select the correct statements about the structure and functions of the hard disk components. (Choose all that apply.)
Disk platter is responsible of storing data in binary form.
The disk connector is responsible of connection and rotation of the platter.
The spindle is responsible for sending commands to the disk head.
The actuator is responsible of moving the Read/Write arm.
Statement 1: We have a RAID5 protected group of disks. The protection level increases if we add more disks to the group. Statement 2: With a RAID 10 set the number of disks must be greater than 8 to always survive a dual disk failure.
Statement 1 is true and statement 2 is false.
Statements 1 and 2 are both true.
Both statements 1 and 2 are false.
Statement 1 is false and statement 2 is true.
What statement is true?
IT managers should determine the retention period for data.
Information Life Cycle management must be based on the costs for the storage hardware.
Storing a lot of random, unstructured data can become a management problem for many companies.
Technology is the main factor that decides which disaster recovery method will be implemented.
HyperReplication for HUAWEI OceanStor can use FC links the data centers. ISCSI links are not supported.
TRUE
FALSE
Storage refers to physical devices that is able to store and save data for user access.
FALSE
TRUE
Which of the following cloud service model deals with providing storage, network servers and virtualization of resources?
Infrastructure As A Service (IaaS)
Storage As A Service (IaaS)
Software As A Service
Platform As A Service (PaaS)
Statement 1: RAID 2.0+ offers better protection against data loss than traditional RAID and it performs much better Statement 2: To rebuild a RAID 2.0+ protected failed drive takes a lot of time as all drives are involved in the rebuild of the spare disk.
Statement 1 is true; Statement 2 is false.
Statement 1 and 2 are false.
Statement 1 is false; Statement 2 is true.
Statement I and 2 are true.
When a RAID configuration is in a degraded state it means that no data has been lost yet.
FALSE
TRUE
Which of the following are advantages of NAS storage system over file servers? (Multiple Choice)
High data security
Drivers service and powerful function
Large storage space
High stability and reliability
For all operating systems there is a specific version of Huawei UltraPath multipathing software.
FALSE
TRUE
The following description about Huawei RAID2.0+ technology is correct: (multiple choices)
The hard disk type of each storage layer in the hard disk domain is the same
The hard disk space is divided into fixed-size blocks
Users can set 'RAID policy' for each storage layer in the storage pool
grain as the minimum granularity of data migration and the basic unit that constitutes Thin LUN
SmartThin is a storage space management provided by HUAWEI OceanStor storage system to allocate storage resources on demand Technology, based on virtualization technology, SmartThin reduces the deployment of physical storage resources and maximizes storage space Utilization rate.
yes
wrong
The following description of the hard disk domain in Huawei RAID 2.0+ technology, the error is:
A hard disk domain is a group of hard disks
A hard disk can only belong to one hard disk domain
OceanStor V3 storage system can create one or more hard disk domains
In the hard disk domain, the types of hard disks are the same, and the size and speed of the hard disks must be consistent.
Cloud computing business models are: (multiple choices)
IaaS
PaaS
SaaS
MaaS
The HUAWEI OceanStor SmartTier feature can be used to place data on specified disk types.
TRUE
FALSE
The following description about CIFS and NFS sharing is incorrect: (multiple choices)
CIFS is a protocol based on network sharing, which has high requirements on the reliability of network transmission, so it is usually adopted Transmission using TCP protocol
One disadvantage of CIFS is that Windows clients must install professional software
NFS is a stateless protocol, and CIFS is a stateful protocol. NFS can recover from link failures. Recovery, and CIFS cannot
Regardless of the CIFS or NFS protocol, the client needs to convert the file format
A bank will launch a business system, which has very high performance and security requirements, and the database uses Oracle data Database and plan to deploy the Oracle database to a storage system, then create a RAID group for the Oracle database At this time, the optimal RAID strategy should be:
RAID 1
RAID 5
RAID 6
RAID 10
The SCSI protocol can be used not only for communication between the host and the disk, but also for communication between the host and the physical tape library, optical disc, and so on.
TRUE
FALSE
In the HUAWEI OceanStor storage system, a customer plans to deploy a business system, the database uses Oracle data, the average data block size is 16KB, when using SmartTier features, the following data migration granularity, the most The advantages are:
512KB
4MB
32MB
64MB
Which of the following methods can achieve the optimal RTO?
Disk-disk
Disk-disk-tape
remote replication
Virtual tape library
In HUAWEI OceanStor, what unit is Thick LUN applying for space from the storage system?
grain
chunk
stripe
extent
Most of the data generated by the Internet industry is structured data, which accounts for about 80% of the total data.
TRUE
FALSE
The following two descriptions about cloud computing, Description 1. A deployment model of cloud computing is to divide a large physical server into multiple small virtual machines; Description 2. A deployment model of cloud computing is to aggregate multiple small physical servers into one mainframe.
description 1 and description 2 are correct
Description 1 is correct, description 2 is incorrect
Description 1 is wrong, description 2 is correct
description 1 and description 2 are wrong
Multipath software can only be used in IP-SAN.
TRUE
FALSE
Regarding the characteristics of DAS, the following description is correct: (multiple choice)
The number of ports that can be connected to the host is limited
When maintaining internal DAS, the system needs to be powered off
If the storage space is tight, the DAS can share the remaining space of the DAS with excess storage resources
When multiple hosts are connected to DAS, they can provide services of different service levels
In HUAWEI OceanStor based on RAID2.0+, when a user creates a file system, the system will automatically create it first Correspond to the LUN, and generate a file system on the LUN.
TRUE
FALSE
A company belongs to the field of banking and finance, with a large amount of business data and high security requirements. What kind of RAID is suitable for this company? level?
RAID 0
RAID 1
RAID 5
RAID 10
When the hard disk has bad sectors or blocks, which reconstruction method is used?
Total reconstruction
Local reconstruction
recovery and reconstruction
Local reconstruction
What is wrong about the snapshot technology below?
When rolling back a file system snapshot, you must cancel the shared mount of the source file system
After opening multiple snapshots on the same file system, roll back to one of the snapshots. After the rollback is complete, the target will be deleted All snapshots after the snapshot creation time
When manually creating a snapshot for a file system, it will not be possible to create a new file system for the file system if it exceeds the product specification limit 's snapshot
When creating a periodic snapshot for the file system, the storage system automatically deletes the earliest created snapshot and automatically generates a new sn
For random access to mechanical disks, the most significant impact on the time it takes to complete an IO is:
A. Seeking time
B. Rotation delay
C. Data transfer time
The InfiniBand interface is used as the front-end host interface in HUAWEI OceanStor unified storage, which can flexibly support direct connection and multiple networking modes of switches.
A. TRUE
B. FALSE
Which of the following descriptions of NAS solutions are correct? (Multiple choice)
A. NAS provides storage resources through file-level data access and sharing
B. Can provide external sharing through FC network
C. Mainly use CIFS and NFS protocols
D. IP network interconnection between NAS client and NAS storage device
The hard disk domain supports online addition of hard disks, and the storage pool supports online expansion.
A. TRUE
B. FALSE
Which of the following operations is a daily maintenance item in data center storage?
A. View and handle alarms
B. Inspection storage equipment
C. Check the computer room environment
D. Check the internal environment of the rack
Description 1: HyperMirror has a LUN failure, the host service is not interrupted, the HyperClone primary LUN fails, and the host service is interrupted. Description 2: HyperMirror supports dual copies, HyperClone supports a maximum of 1 master LUN: 16 slave LUN mode.
A. description 1 is correct, description 2 is correct
B. description 1 is correct, description 2 is wrong
C. description 1 is wrong, description 2 is correct
D. description 1 is wrong, description 2 is wrong
In data backup and recovery, application testing and data analysis scenarios. HyperClone supports up to 1 master: 8 slave LUN mode. The following descriptions for SAN and NAS are correct: (multiple choices)
A. SAN is more used in the database scenario to store this structured data.
B. Now NAS is for unstructured data storage, such as the sharing of key office documents and centralized storage by many department employees.
C. DAS, NAS, and SAN are all external storage, so storage resource sharing can be easily achieved.
D. The characteristic of NAS is to put the file system of the server in the storage, so that the server needs to share data through the network.
What are the main elements of the disaster recovery system? (Multiple choice)
A. Backup window
B. RTO
C. RPO
D. backup capacity
Compare NAS storage and SAN storage in terms of principle, performance, cost, sharing, and application scenarios. Which of the following descriptions is correct? (Multiple choice)
A. NAS performance is higher than SAN, cost is higher than SAN
B. SAN is mainly suitable for file sharing scenarios, sharing is more convenient
C. NAS is a storage device with a file system. Sharing files through the network is equivalent to a host in the network.
D. SAN is a high-speed fiber-connected disk network. It provides disk resources to the host. It has no file system and is equivalent to a network hard drive.
HA (High Availability) refers to the ability to continue to access applications in the event of a single component failure in the local system. In a data center, the downtime is one hour a year, so what is the HA of the data center?
A. 0.99999
B. 0.9998858
C. 0.999999
D. 0.998934
In the backup system, the data that needs to be backed up must go through the media server before being stored in the backup medium.
A. right
B. FALSE
The process of regenerating all user data and check data on the failed disk in the mirrored array or RAID array is called:
A. Recalculate
B. rebuild
C. hot backup
D. restore
Due to the earthquake, an enterprise's IT system went down at 16:00 on November 11th and the business was stopped. By 23:00 on that day, the IT system resumed operation, and the data at 12:00 on that day could be restored. Then this RTO What is the difference between RPO and RPO?
A. RTO=4 hours, RPO=7 hours
B. RTO=7 hours, RPO=4 hours
C. RTO=2 hours, RPO=4 hours
D. RTO=7 hours, RPO=3 hours
A company needs to make a backup strategy. The company has a small amount of backup data, and hopes to back up in a short time and save storage space to the maximum. What type of backup do you recommend?
A. Full backup
B. cumulative incremental backup
C. differential incremental backup
What are the networking methods of FC SAN? (Multiple choice)
A. Direct connection
B. single exchange
C. double exchange
D. arbitration ring
A bank needs to ensure data security and use it to transfer large databases. What kind of storage network architecture is the bank suitable for?
A. IP SAN
B. FC SAN
C. DAS
D. NAS
Xiao Wang, an employee of a company, serves as the storage system administrator of the company. When he uses two sets of OceanStor5500 V3 as a disaster recovery solution, only one of them is required to configure data remote replication software.
A. right
B. FALSE
Users of a company can automatically report the alarm of the storage device connected to it to the Huawei Service Support Center through a management software. Excuse me, what software is this user using?
A. DeviceManager
B. CLI management interface
C. Toolkit
D. eService
When the Windows copy program copies local files to the file system, the file system block size of the HUAWEI OceanStor storage system is the default, which ensures the full use of storage space.
A. right
B. wrong
The SmartCache feature in HUAWEI OceanStor series products can only improve read performance, not write performance.
A. right
B. FALSE
According to the changes in the amount of backup data, the types of backup can be divided into:
A. Real-time backup
B. full backup
C. incremental backup
D. differential backup
The following are the advantages of SSD hard drives compared with mechanical hard drives. The description is correct: (multiple choices)
A. No high-speed rotating parts, high performance
B. Support TCQ/NCQ, corresponding to multiple IO requests
C. SSD disk at a time is more suitable for use in scenarios that require large storage capacity
D. SSD can be used in some harsh environments, such as high temperature and humidity, strong earthquakes and other harsh environments.
What is the synchronization cycle time limit for asynchronous remote replication?
A. 1s~144min
B. 3s~144min
C. 1s~300min
D. 3s~300min
Among the components of the mechanical disk, the parts responsible for reading and writing data are:
A. Disc
B. Read/write head
C. Magnetic head arm
D. Spindle
LAN Free and Server Free are backup networking methods that have little impact on host performance.
A. TRUE
B. FALSE
Which of the following statements about RAID 5 and RAID 10 are correct?
A. The sequential read performance of RAID 5 is lower than RAID 10
B. If the front-end pressure is sufficient, the sequential write performance of RAID 5 is higher than that of RAID 10.
C. The random read performance of RAID 5 is lower than RAID 10
D. The random write performance of RAID 5 is higher than RAID 10
The following description of common storage protocols is correct?
A. The ATA protocol uses a parallel interface, which can only be built-in and requires cable length
B. The SCSI protocol does not support hot swap
C. A SAS domain can connect 15 devices
D. FC protocol has good compatibility and long transmission distance
Regarding data-level, application-level and business-level disaster recovery, is the following
statement correct?
About RTO, data level <application level<business level
About RTO, data level <business level <application level
About TCO, data level <application level<business level
About TCO, business level <data level <application level
A company has sufficient client server resources, but network resources are tight. Which
deduplication strategy is suitable?
file-level deduplication
Byte-level deduplication
source deduplication
Deduplication on the target side
The server with Linux operating system installed accesses the disk array based on the RAID 5 strategy.
The order is:
File system->Application system->Volume->I/O subsystem->RAID controller->Disk
Application System->File System->Volume->I/O Subsystem->RAID Controller->Disk
Application system->File system->I/O subsystem->Volume->RAID controller->Disk
Application system->File system->Volume->RAID controller->I/O subsystem->Disk
Among the following options, what is the correct sequence of the basic business configuration
process for data center block storage?
1. Create a mapping view. 2. Create a storage pool. 3. Create a hard disk domain. 4. Create a LUN and
create a LUN group. 5.Create a host group. 6. Log in to DeviceManager
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 mountthe same or different shares.
Description 2: Windows cannot share multiple Homedir shares with the same IP address (domainname or machine name)
The user mounts multiple shares
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
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
FALSE
Host-level disaster recovery has less investment and better compatibility.
TRUE
FALSE
From the perspective of the cloud computing business model, Huawei network disks belong to PaaS
TURE
FALSE
What is a storage array?
system that handles the communication of data from end users to its storage location and provide
confirmation on successful storage
A system that manages the network functions and carries the data traffic from host to storage.
A system that has the management software that can provide access to its sets of hard drives or
tape libraries for the purpose of data access and storage
A system that handles the interconnection of hosts to disks drives and allows hosts to directly
access the disks and use it as local drives
