Font size
WorksheetsHuawei Storage QuizHCIA Storage CertKingdom 387-464
Total questions: 79
Worksheet time: 40mins
The following description is correct: (multiple choice)
OceanStor V3 series products support 8 controllers, and the switching plane between the controllers is IP-based Scale-out interconnection
When the control frame of OceanStor 5300 V3 is expanded from 2 to 4 controls, it can be directly connected or Networking with switches
In the OceanStor V3 series of new-generation storage products, the back-end loops of the same SAS interface card can be mixed and connected Ordinary disk enclosure and high-density disk enclosure
OceanStor V3 mid-range storage arrays use IP switches for interconnection, which has cost advantages. PCIe switches are dedicated Switching, the cost is relatively high, mainly used in high-end storage
Which of the following descriptions of RAID 1 is incorrect?
RAID 1 writes data to each member disk, the data on each member disk is the same
RAID 1 is verified by XOR algorithm
Normally, RAID 1 reads data from data disk and mirror disk
When the data of some member disks is damaged, RAID 1 allows it to quickly recover data from other member disks
OceanStor 5300 V3 is a dual-controller converged storage product, which must ensure the working controller and attribution control of the LUN The controller is consistent.
TRUE
FALSE
The synchronous remote copy management module RM is software.
TRUE
FALSE
What value does thin provisioning technology bring to customers? (Multiple choice)
Improve storage resource utilization
Reduce the storage space occupied by data
Reduce the initial purchase cost
Reduce the overall TCO of the storage system
RTO=0 and RPO=0 in the disaster recovery center of the same city.
TRUE
FALSE
What are the following descriptions of the three iSCSI connection methods?
The connection mode of the Ethernet card + initiator software does not occupy the host resources at all
The hardware TOE network card + initiator software connection method reduces the pressure on the host resources
The iSCSI HBA card completes the TCP/IP protocol conversion without occupying host resources at all
TOE network card completes the conversion of iSCSI packets to TCP/IP packets
What is the correct description of the advantages of Huawei RAID 2.0+?
The data is automatically and evenly distributed on the hard disks in the storage pool to avoid uneven heating and cooling of the hard disk, thereby reducing the storage system Overall failure rate
Overcome the performance bottleneck of the traditional RAID reconstruction target disk (hot spare disk), making the reconstruction bandwidth write bandwidth no longer It becomes the bottleneck of the reconstruction speed, which greatly improves the reconstruction speed, reduces the probability of double-disk failure, and improves the storage system. Reliability.
There is no write penalty in RAID2.0+, which overcomes the write penalty in RAID 5 and RAID 6 levels in traditional RAID technology The impact of the penalty on the write performance of the LUN has greatly improved the performance of the LUN
The data on a single LUN is distributed to many different hard disks, avoiding hard disk hot spots, making single LUN performance and The capacity has been greatly improved
Which of the following statements about Huawei RAID 2.0+ are correct? (Multiple choice)
Hot spare space cannot cross engine
RAID 2.0+ uses an independent hot spare disk
Chunk size and Extent size are not adjustable
Automatically reserve a certain amount of hot spare space in the hard disk domain according to the hot spare strategy
Description 1: The file system of the NAS is managed by a storage or server that provides resources. Description 2: The file system of the SAN is managed by the host itself.
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
Is the following description of cloud computing correct? (Multiple choice)
Cloud computing is dynamically scalable
End users of cloud computing need to understand how cloud computing works
Cloud computing can provide virtual disk space
Cloud computing is usually used in business systems that require high performance and high response speed
Snapshots used for backup purposes should be set to read-only to prevent modification by other applications and affect the backup data consistency.
TRUE
FALSE
There are two descriptions about fiber switches below, the correct ones are: Description 1: A port can be in multiple zones. Description 2: A switch can have multiple zones.
description 1 and description 2 are correct
Description 1 pair, description 2 wrong
description 1 wrong, description 2 right
description 1 and description 2 are wrong
The cloud data center virtualizes storage, computing and network resources, and provides a virtualization platform for users to use.
TRUE
FALSE
Regarding the advantages of DAS, the following description is correct: (multiple choice)
Deployment is simple
Large initial investment
Small network complexity
The configuration is more complicated
Which of the following operations does a small employee A of a bank need to do in the first maintenance project of data center storage?
Check Toolkit installation
Check eService installation and configuration
Check alarm policy configuration
The amount of data in an incremental backup is larger than that in a differential backup.
TRUE
FALSE
Is the following statement correct?
After using RAID 5 with 6 200G hard drives, the available space is 1200G
NL SAS/SATA hard disks are suitable for data protection using RAID 6, and SAS hard disks are suitable for data protection using RAID 5.
According to protection
S2200 V3 can support SSD, SAS, SATA hard drives
OceanStor V3 series products support RAID 0/RAID 1/RAID 5/RAID 10, but not RAID 6
The initial capacity allocation strategy of HUAWEI OceanStor storage system defaults to automatic allocation.
TRUE
FALSE
A company uses the CIFS protocol for file sharing, and uses the Homedir sharing method according to the security policy. All users access the folder and write space.
TRUE
FALSE
In the HUAWEI OceanStor storage system, which of the following descriptions about SmartThin LUN is correct?
When creating a thin LUN, it cannot be allocated a larger capacity than the available free space in the storage pool
Thin LUN cannot be converted into Thick LUN
When creating a thin LUN, the initial allocated capacity can be used without specifying
The types of LUNs on a storage pool must be the same, either all are Thin LUNs or all are Thick LUNs
There are two descriptions about backups: Description 1: You can use the data backed up on the tape for data recovery at any time, but you can only recover to the backup moment Historical data, not the data at the time of failure. Description 2: Using tape as the backup medium is the highest RTO backup method.
description 1 is correct, description 2 is correct
Description 1 is right, description 2 is wrong
description 1 is wrong, description 2 is right
Description 1 is wrong, description 2 is wrong
Can the following transmission protocols not use switches?
iSCSI protocol
SCSI protocol
FC agreement
FCoE agreement
Which of the following three disaster recovery technologies are commonly used? (Multiple choice)
Disaster recovery based on the host layer
Disaster recovery based on the network layer
Array-based disaster recovery
Disaster recovery based on application layer
iSCSI encapsulates the SCSI command and data description block into the iSCSI protocol.
TRUE
FALSE
The advantages of SAN for NAS unified storage do not include:
Users do not need to plan the storage capacity of SAN and NAS separately
Users can freely allocate storage to meet the needs of the application environment
Users do not need to be concerned about capacity utilization related to data block and file storage support
Users can realize the functions of NAS by buying a set of SAN
The following statement is wrong: (multiple choice)
Backup cannot solve the recovery of data corruption
Backup to solve the recovery of data loss
Backup cannot solve the retrieval of historical data
Backup can directly take over the business
If a companys business is to write large-scale data randomly into the LUN, which capacity initial allocation strategy and which Kind of data migration strategy?
Automatic allocation: migration to the low-performance layer
Priority allocation from high-performance layer: migration to low-performance layer
Priority allocation from low-performance layer: migration to high-performance layer
Priority allocation from the capacity layer: automatic migration
In the Huawei storage system, which of the following is true about the characteristics of virtual snapshot LUNs?
The storage system can generate a snapshot in seconds
The snapshot LUN cannot be mapped to the host
Complete data copying is unnecessary
data use mapping table lookup
The SATA connector can support both SATA and SAS hard drives.
TRUE
FALSE
Regarding the new era of ICT and technology, is the following statement correct? (Multiple choices)
Cloud computing (cloud computing) is an increase, use and delivery model of Internet-based related services, usually Involves the provision of dynamically scalable and often virtualized resources via the Internet
Social media (social media) is a virtual community that people use to create, share, exchange opinions, opinions and experiences And web platform
CPS (Cyber Physical System) includes ubiquitous environmental awareness in the future, embedded computing, network communication System engineering such as Xinhe Network Control is a physical system with functions of computing, communication, precise control, remote collaboration and autonomy
In the new ICT era, the migration of ICT systems from supporting systems to production systems
Bank's bill imaging system often stores structured data on a SAN array, and unstructured data on the NAS array.
TRUE
FALSE
Description 1: The data recovery of the snapshot depends on the source data. If the source data is physically damaged, it cannot be recovered. and In this case, the clone can still restore the source data. Description 2: After the source data is damaged, the LUN copy must completely copy the backup data to restore the source data. And clone only Damaged data needs to be recovered, which greatly reduces the recovery time.
description 1 is correct, description 2 is correct
Description 1 is right, description 2 is wrong
description 1 is wrong, description 2 is right
Description 1 is wrong, description 2 is wrong
With the advent of the era of big data, the corresponding storage technology is also undergoing changes. Is the following statement correct? (Multiple choice)
The file system develops from a local file system to a cluster file system and a distributed file system
Traditional NAS, facing PB-level data, complex volume management and unbalanced system capacity allocation, will result in waste of resources
The mass storage system is characterized by a more complicated file system and more complicated management
Having large-scale expansion capability is the characteristic of mass storage system
The number of erasable times of the storage medium cell of the SSD disk is limited. Multiple erasing causes the wear of the SSD, which also makes the SSD has a limited period of use, which is related to the number of specific erasures.
yes
wrong
What is the role of multi-path software? (Multiple choice)
Fault path switching
Load balancing of IO traffic
fault path recovery
Data recovery
The NAS engine and the storage unit are interconnected by Ethernet switches.
TRUE
FALSE
What are the challenges facing traditional data centers? (Multiple choice)
Traditional data centers only monitor but not manage
Capacity expansion of traditional data centers in units of nodes
Traditional data center has low cooling efficiency
Traditional data center maintenance costs are high
In the FC protocol, which of the following layers is responsible for encoding and decoding?
FC-0
FC-1
FC-2
FC-3
The following description of disaster recovery is incorrect?
Regardless of whether disaster recovery or backup solutions are used, compared with data during system failure, data for disaster recovery cannot be lost Avoided
After the disaster, I hope to immediately access the backup on the remote device
The restored data hopes to meet the current work requirements immediately
The traditional use of software for data backup still has usage scenarios
The advantages and disadvantages of the disaster recovery technology of the host layer, network layer and array layer, the following statement is correct? (Multiple choice)
For host layer disaster recovery, host layer replication will occupy certain host resources, which will affect the application system
The initial construction cost of network layer disaster recovery is relatively low, and many manufacturers can provide solutions
Array layer disaster recovery, the arrays at both ends must be products of the same manufacturer, unable to solve the heterogeneous problem
Host layer disaster recovery is implemented on the host side, without considering the compatibility between the underlying devices
Regarding the traditional model and cloud computing model, high reliability in the data center and cross-data center disaster recovery methods, the following says what is wrong?
In the traditional mode, the data center relies on component redundancy to achieve high reliability
In the cloud computing mode, the data center relies on component redundancy to achieve high reliability
In the traditional model, cross-data center disaster recovery is mainly based on copying business data, and the recovery process is complicated and the recovery period is long
In the cloud computing mode, cross-data center disaster recovery is the replication of all data in the business data and operating environment. Simple recovery process and short recovery period
Regarding the four disaster recovery modes of HyperMetro, Hot Standby, Warm Standby, and Cold Standby, is the following statement wrong?
HyperMetro technology can realize that both the main and backup data centers provide services to the outside world. During normal operation, the business of the two data centers can do load sharing based on weights, there is no difference between master and backup, and respond to some users separately. The weight can be divided by region, or number according to the center's service capacity or external bandwidth
Warm standby technology. When a data center failure causes the service to become unavailable, within the specified RTO time, you can automatically switch the service to a backup data center
The hot standby business is responded by the main data center. When a data center failure causes the business to be unavailable, the Within RTO time, the service can be automatically switched to the backup data center
The biggest feature of multi-activity is that it will not cause waste of resources in the data center, and the data center carries application business operations.
The SCSI protocol is the basic protocol for host and disk communication. It is operated by the SCSI controller, the controller is equivalent for a small CPU, it has its own command set and cache.
TRUE
FALSE
The following different types of SSD disks have the lowest unit capacity price:
SLC
eMLC
cMLC
TLC
The following different types of SD disks have the lowest unit capacity price:
SLC
eMLC
cMLC
TLC
The dual-controller storage system generally contains a mirror channel, and data written to the storage system cache will be written through the mirror channel into the peer controller.
TRUE
FALSE
After employee A of a company logs into the storage device of the company system, he finds that he has certain control rights. But not repairable if the system time is changed, user management cannot be performed. May I ask which of the following roles does Employee A have?
Super administrator
Administrator
ordinary users
Read-only users
A company is mainly used for file system sharing in Linux, UNIX, Mac OS and VMware operating system environments. Which of the following file access protocols is suitable for this company?
NFS
CIFS
Telnet
HTTP
What are the three data centers in the disaster recovery plan that 3DC refers to? (Multiple choices)
Production center
The same city disaster recovery center
Remote disaster recovery center
Data center
The following description of NAS is correct: Description 1: NAS is always based on file sharing. Description 2: The distance of the network connection affects the performance of the NAS.
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
What are the common time indicators for measuring the reliability of a system? (Multiple choice)
reliability
Effective
Average failure time
Mean time between failures
Remote replication requires master and slave storage from the same manufacturer.
TRUE
FALSE
What are the application scenarios of the SAN solution? (Multiple choice)
Data sharing
Storage sharing
Data backup
Disaster recovery
In Huawei RAID 2.0+, when the hot standby strategy of a storage tier is low, the following is about the hot standby reserved by the system for that tier The capacity description of the space, what is wrong?
When the total number of hard drives in this layer is 10, reserve a capacity equivalent to 1 hard drive
When the total number of hard drives in this layer is 12, reserve the capacity equivalent to 1 hard drive
When the total number of hard drives in this layer is 20, reserve the capacity equivalent to 2 hard drives
When the total number of hard drives in this layer is 48, reserve the capacity equivalent to 2 hard drives
Which of the following descriptions of RAID technology are correct? (Multiple choice)
Not every RAID technology can improve write performance
In RAID 0, multiple hard drives are accessed simultaneously (parallel access), speeding up data access performance
The current RAID technology only uses the parity mechanism to protect the data
The performance of all RAID levels increases linearly with the increase in the number of member disks
SCSI communication is initiated by the initiator and received and processed by the target. When the host and the storage device communicate, the storage device assumes the role of initiator.
TRUE
FALSE
When does data become information?
When it has been stored in the correct file format
When the data has been stored in digital form
When the enterprise understands the meaning of data and extracts the content needed for decision-making
When the data is verified to be correct
When UltraPath is installed on the application server, the operating system can automatically identify the LUN mapped to the host, and there is no need to restart the host.
TRUE
FALSE
What is wrong about the relationship between FC protocol and SCSI protocol?
FC can transmit SCSI commands, data and status information units by constructing frames
FC or iSCSI protocol is used to carry the SCSI protocol, is an extension of the SCSI protocol
SCSI is the upper layer protocol of FC4, SCSI is a subset of FC protocol
FC is an alternative to SCSI
A government unit adopts Huawei's two-site, three-center solution for disaster recovery construction, and its business is mainly concentrated from 8:00 to 18:00. What is wrong with the following approach?
Production centers and remote disaster recovery centers should use synchronous remote replication
The time period for data synchronization between the production center and the disaster recovery center should be selected when the business volume at night is small
When doing remote replication, a consistency group should be created according to the business of the unit, and related businesses are placed in a consistent
You can use the BCManager software to set the data synchronization period
According to the physical location of the NAS engine and storage device, the NAS is divided into: (multiple choices)
Internal NAS
External NAS
Unified NAS
Gateway NAS
In RAID 2.0+, the administrator needs to manually set which hard drives are designated as hot spares.
TRUE
FALSE
The difference between DAS and SAN, which of the following descriptions is wrong?
SAN redundant networking provides higher reliability
DAS and SAN are all external storage, so storage resource sharing can be easily achieved
DAS is suitable for small and medium-sized LAN environment with only a few servers
SAN is suitable for high-end storage application environments, such as key databases, centralized storage, large-scale storage, backup and Disaster recovery and other scenarios
The steps of asynchronous remote replication multi-point technology, is the following statement correct? (1) A new time slice (T2, P2) is generated in the cache of the master LUN and the slave LUN at the start of each replication cycle (2) The newly written data of the host is cached in the time slice T2 of the main LUN Cache, responding to the completion of the host (3) The master and slave LUNs each release the received data (4) Copy the data of time slice T1 directly to the slave LUN and write it to the time slice P2 of the slave LUN
(1) (2) (3) (4)
(1) (3) (2) (4)
(1) (2) (4) (3)
(2) (1) (4) (3)
Description 1: The LUN is composed of multiple Extents in the storage pool. Description 2: The LUN can contain one or more types of Extent.
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
Regarding the description of Huawei OceanStor storage system safe disk, which of the following is correct? (Multiple choice)
When the device is powered off, the safe disk stores the data in the cache to prevent data loss
When an unexpected power failure occurs, the BBU supplies power to the cache and safe disk
Safe disk cannot be used to store user data
Only the first two disks in the controller cabinet are used for safe disks
In Huawei OceanStor storage devices, coffer disks are an optional configuration because the write cache has mirrors, and there is a backup power supply for the controller.
TRUE
FALSE
The QoS of the file system supports IO priority configuration and policy configuration
A. TRUE
B. FALSE
In disaster recovery applications, the HyperMirror function (remote data replication) can only be
accessed between two OceanStor 5300 V3
Yes, it cannot be performed between OceanStor 5500 V3 and OceanStor 5300 V3.
A. TRUE
B. FALSE
In the RHEL 5 operating system, which command is used to mount the sdb5 device in the dev
directory to the mnt directory
sdb5 directory?
A. cat /dev/sdb5 /mmt/sdb5
B. ln /dev/sdb5 /mnt/sdb5
C. mount /dev/sdb5 /mnt/sdb5
D. df /dev/sdb5 mnt/sdb5
Distributed object storage has a unified namespace, and supports online expansion.
A. TRUE
B. FALSE
The FCoE protocol refers to encapsulating the FC protocol into a TCP/IP protocol package and transmitting it on Ethernet.
A. TRUE
B. FALSE
For a system with high business continuity to find that, the characteristics of RPO and RTO values
should be:
A. RPO is higher, RTO is lower
B. RPO is lower, RTO is higher
C. RPO and RTO are lower
D. RPO and RTO are higher
Huawei focuses on IT infrastructure in the ICT field
A. TRUE
B. FALSE
In Huawei RAID 2.0+, is the description about chunck and extent correct?
A. chunck is the smallest unit for LUN to apply for space from the storage pool and free up space
B. The extent is the smallest unit for the storage pool to allocate resources from the hard disk domain
C. chunck is the smallest unit of hot data statistics and migration (data migration granularity)
D. The extent size of different storage pools can be different, but the extent size in the same storage
pool is uniform
Regarding HUAWEI OceanStor storage dynamic tiered storage technology, which of the following
descriptions is incorrect?
A. SmartTier calculates and analyzes the activity of data to determine the activity level of the data
B. SmartTier automatically and dynamically moves data to different performance storage media
according to different activity levels of the data on
C. SmartTier data movement configuration-based data migration strategy
D. Data statistics, analysis and data migration of SmartTier features will affect business continuity and
data availability
Description 1: The CIFS share provided by a company's storage system is a public directory and can be
accessed by users with permissions.
Description 2: A company's storage system sets Homedir sharing so that different users can only
access the same user name
Private directory.
A. Description 1 is correct, description 2 is incorrect
B. Description 1 error, description 2 error
C. Description 1 is correct, description 2 is correct
D. Description 1 is wrong, description 2 is correct
The backup is to copy and save the data or system. Once an error or disaster occurs, these backups
can be used to restore the system
Data to restore the business to a normal operating state.
A. TRUE
B. FALSE
