WorksheetsHCIA Storage CertKingdom 456-536
Total questions: 72
Worksheet time: 40mins
What three stages do storage systems need to go through to realize SmartTier?
Initial capacity allocation
Data layout analysis
Data migration
I/O monitoring
Incremental backups must rely on the last full backup and the last incremental backup to perform data recovery. Complete recovery, data reconstruction during recovery is slower than full backup, and recovery window is larger.
TRUE
FALSE
Regarding the common components of ICT, is the following statement correct?
Common components of ICT include host, storage array, switch, and network
The mainframe is also called a server, referring to some computers with higher specifications in some enterprises
Storage array usually refers to equipment that provides data storage
The switch is also called a switching hub, which mainly works on a three-layer network
An enterprise needs to purchase backup media for data backup. To inherit the enterprises original tape backup architecture and strategy, it is necessary to mention High backup speed. What kind of backup media did this enterprise purchase?
Disk array
Virtual tape library
tape library
CD Tower
The following description of DAS is incorrect:
DAS is directly connected to the designated storage device on the server using them
DAS is divided into internal DAS and external DAS
The hard disk inside the server is not DAS
External DAS can be connected to the server accessing them through FC protocol or SCSI protocol
The RTO in the disaster recovery system measurement index refers to the point in time when the system and data must be recovered after the disaster beginning.
TRUE
FALSE
The following two descriptions are correct: Description 1: The maintenance cost of traditional PC is usually lower than that of desktop cloud. Description 2: In cloud computing, data is stored and managed centrally.
Descriptions 1 and 2 are correct
Description 1 is correct, description 2 is incorrect
Description 1 is wrong, description 2 is correct
Both descriptions 1 and 2 are incorrect
What versions of the NFS protocol are there?
NFS V1
NFS V2
NFS V3
NFS V4
For the data stored on the medium, there is no need to physically crush or sell it as the data recorded on the paper Ruined situation.
TRUE
FALSE
Which of the following describes the file access protocol correctly?
CIFS protocol is used in Linux and UNIX environments
The NFS protocol is used in the Windows environment
CIFS protocol, NFS protocol and FTP protocol work in C/S architecture
The working method of HTTP protocol is B/S architecture
Create a Thin LUN on HUAWEI OceanStor with a capacity of 100G and an initial allocated capacity of 10G, then After mapping this LUN to the Windows 2012 host, the corresponding disk scanned on the host, the disk shows The capacity should be 10G.
TRUE
FALSE
FTP is a very secure protocol with no security risks.
TRUE
FALSE
When the RTO requirement is within 10 minutes, the traditional tape backup method is not recommended.
TRUE
FALSE
When the RPO time requirement is at the minute level, the traditional tape backup method can be used.
TRUE
FALSE
The following describes RAID 10, which are correct?
RAID 10 is used in scenarios with high requirements for speed and fault tolerance
RAID 10 requires at least 4 member disks
In RAID 10, if two member disks in a subgroup fail, the data is read normally
In RAID 10, the data is first mirrored and then striped
Which ports in the FC switch can communicate with each other is determined by the zone.
TRUE
FALSE
A device has only one WWNN number, but it can have multiple WWPN numbers.
TRUE
FALSE
The following are the characteristics of the clustered NAS storage architecture:
Unified namespace, shared globally
High performance, multiple arrays concurrent I/O
Online expansion
can provide block-level storage
Deduplication and compression can only be enabled for Thin LUNs.
TRUE
FALSE
Which of the following RAID levels has the lowest hard disk space utilization?
RAID 0
RAID 1
RAID 3
RAID 5
Which of the following operating systems can access CIFS shares without installing additional software?
Win7
Solaris
FreeBSD
AIX
The following two descriptions are correct: Description 1: Synchronous remote replication, when the primary storage fails, the amount of data lost can be 0. Description 2: When the host is a Linux-based file system, asynchronous remote replication must be used.
description 1 and description 2 are correct
Description 1 pair, description 2 wrong
Description 1 wrong, description 2 pairs
description 1 and description 2 are wrong
Which of the following is not an IP SAN component?
Storage device with iSCSI interface
twisted pair
NIC
FC switch
DAS is a storage architecture without scalability.
TRUE
FALSE
What is the correct sequence of the overall reconstruction process?
2. Assign hot spare CK to all these CKGs
3. Update CKG information and release the reconstructed CK
4. Write the reconstructed data to the hot standby CK
5. Through the RAID algorithm, calculate the data on the failed disk based on the data on the normal
disk and the check disk
A. 1->2->5->4->3
B. 1->2->3->5->4
C. 5->1->2->3->4
D. 5->2->1->4->3
When configuring Thin LUN, not all configured storage space is allocated upon creation. The storage space for Thin LUN will only be allocated when it is used.
False
True
Fibre Channel is a dedicated protocol used in enterprise-level SAN networks for communication between hosts and storage devices or between storage devices. It features high transmission efficiency, long transmission distance, and high security and reliability.
False
True
All components of storage devices use the redundancy design to ensure system reliability. Redundant modules include controller modules, management modules, BBU modules, interface modules, power modules, and fan modules.
False
True
Deduplication is a data reduction technology that compresses large-size data blocks to reduce the physical storage capacity for storing data, thereby meeting increasing storage capacity requirements.
False
True
A snapshot is a point-in-time copy of the source data that serves as a data backup accessible to hosts.
False
True
A single-platter or multi-platter disk allows only one head to read and write data at a time.
False
True
NAS provides file sharing services through protocols such as NFS and CIFS.
False
True
If a disk domain has multiple disk types, the storage pools in that disk domain MUST have multiple disk types in them.
False
True
A company purchases storage devices for new services. The new services do not require high access speed of storage devices. In this scenario, the IP SAN can be used for networking deployment.
False
True
SmartKit is an O&M tool that integrates cloud computing, server, and storage. It cannot be used to monitor third-party devices.
True
False
If a disk is faulty, what is the process of recovering data on the faulty disk?
Replication
Compression
Reconstruction
Deduplication
Which is the correct order for evolution of mid-range storage architectures? 1) Fixed storage system configuration 2) Dual-controller active-active redundancy configuration 3) Flexible hardware component configuration 4) Flexible software function configuration
4321
1342
2143
1234
Which of the following best describes the relationship between the storage and host in DAS?
One-to-Many
Many to One
One-to-one
Many-to-Many
What is the function of hot spare in storage?
Additional space for usage when storage resource is low
Used as cache to increase the performance of disks.
Spare disk space for storing metadata
Spare disk space used for disk data reconstruction when disks are faulty.
What is required to add additional controllers to an existing HUAWEI OceanStor system?
SAS cabling
56 Gb Infiniband module
Smart I/O card
FC or iSCSI Host Bus Adapter
Which of the following is the most widely used FC topologies?
Point-to-Point
FC Switched Network
Arbitration Loop
FC Direct Connection
During data center construction, a media company purchased storage devices from multiple vendors. The CTO wants to centrally manage these devices through storage virtualization. Which function is NOT provided by storage virtualization?
Reducing the limitations of physical storage capacity
Hiding the complexity of physical devices
Enabling servers to directly access storage hardware
Supporting unified deployment and management
Which statement is FALSE? A. A snapshot rollback can quickly restore data. B. When no host reads or writes data, the snapshot data is rolled back to the source volume in sequence. C. Some data may be lost during a snapshot rollback. D. If there are writes to the source LUN during a snapshot rollback, the rollback is performed after the writes are complete.
A. A snapshot rollback can quickly restore data.
B. When no host reads or writes data, the snapshot data is rolled back to the source volume in sequence.
C. Some data may be lost during a snapshot rollback.
D. If there are writes to the source LUN during a snapshot rollback, the rollback is performed after the writes are complete.
In Huawei storage systems, which feature can be used to periodically detect and migrate hot data from the capacity tier to the high-performance tier?
A. SmartQuota
B. SmartMigration
C. SmartMotion
D. SmartTier
Which of the following cannot be configured with a quota?
A. User
B. User Group.
C. Volume
D. Directory.
Which of the following is not one of the working principles of QoS?
A. I/O Priority Scheduling.
B. I/O Performance Assurance.
C. I/O Flow Control
D. I/O Latency Burst.
Which size of HDDs is used by Huawei storage products?
A. 5.25-inch
B. 3.5-inch
C. 1.8-inch
D. 8-inch
When CLI is used to configure Huawei hybrid flash storage, which operation is NOT involved in creating storage space?
A. Create a storage pool
B. Create a host.
C. Create a LUN.
D. Create a LUN group
In the scenario where only 2 disks are in the RAID group, which one of the following uses data striping?
A. RAID 0
B. RAID 5
C. RAID 1
D. RAID 6
Which of the following technology segregates the nodes in the SAN fabric into multiple networks and allows access control of the members?
A. Subnet.
B. VLAN.
C. Quarantine.
D. Zoning.
Which statement about SCSI is false?
A. SCSI stands for "Small Computer System Interface". It is a protocol system
B. SCSI supports communication between different devices.
C. The latest protocol is SCSI-3, which provides a transmission speed of up to 1 GB/s
D. The evolution is SCSI-1 > SCSI-2 > SCSI-3.
Which of the following is incorrect regarding the differences of IP SAN and FC SAN?
A. IP SAN uses iSCSI protocol for data transmission.
B. IP SAN can connect to FC SAN without any additional protocols.
C. FC SAN uses FC protocol for data transmission
D. Both encapsulates the SCSI command with their underlying protocol before transmission
Which of the data storage types are classified based on data access frequency?
A. Online storage
B. Unified storage
C. Nearline storage
D. Offline storage
What are the advantages of SSDs over HDDs? (Select All that Apply)
A. Larger capacity
B. Better environmental adaptability
C. Faster read/write speed for random access
D. Longer service life
An Internet company plans to purchase a storage device to store archived service data and online transaction data. SSDs are expensive and HDDs cannot meet the performance requirements of online services. Which features CANNOT solve this problem? (Select All that Apply)
A. SmartMigration
B. HyperMetro
C. SmartTier
D. HyperClone
The storage system compresses data based on the user-defined compression policy. Which compression policies are supported by Huawei storage systems? (Select All that Apply)
A. Inline compression before data is written to disks
B. Inline compression and data read when the system is idle
C. Post-process compression, where data is first written to disks and then read and compressed when the system is idle
D. Inline compression after data is written to disks
Which statements are true about the functions of HyperClone? (Select All that Apply)
A. When the source LUN fails, service data can be recovered from any point in time before the fault
occurred using the data backed up through HyperClone
B. If a disk failure occurs on the source LUN of HyperClone, you can split the target LUN from the
source LUN to continue providing services
C. If a logical fault occurs on the source LUN, data can be reversely synchronized from the target LUN
to the source LUN to recover services on the source LUN.
LUN for multiple applications
As the new storage administrator, you are tasked with the procurement of a new batch of SSD drives
to replace the older drives that has reached the end of life. You have the option of SLC, MLC and TLC
SSD. Which of the following will be your choice with a limited budget and medium level of reliability
concerns? (Select All that Apply)
A. Purchasing all SLC SSD drives for maximum savings on cost regardless of reliability
B. Purchasing all TLC SSD drives for the storage system for the best reliability and performance
C. Purchasing the MLC SSD if within budget range for core applications and services for better
performance and reliability.
D. Purchasing SLC SSD drives that has lowest cost and reliability for storage purposes of non critical
applications
Which statements are true about HyperMetro? (Select All that Apply)
A. The local and remote sites can run services at the same time
B. A quorum server must be configured
C. HyperClone can be configured only for storage devices of the same model and version
D. Automatic switchover upon storage faults is supported
Huawei OceanStor hybrid flash storage is used as an example. Which statements are true about IP
address failover? (Select All that Apply)
A. IP address failover applies only to IP SAN and does not apply to other storage network
architectures
B. A failover group is a combination of ports that are used for IP address failover in a storage system.
C. Fallback means that the faulty port takes over services again after it recovers
D. IP address failover ensures service continuity and improves the reliability of paths for accessing
file systems
Which of the following are the data transmission rates that can be configured on the FC ports on the
FC switch in FC SAN given that your cable and SFP supports it? (Select All that Apply)
A. 8Gb
B. 11Gb
C. 4Gb.
D. 16Gb.
Which statements are true about distributed storage? (Select All that Apply)
A. Supports large-scale horizontal expansion
B. Does not support elastic EC for data redundancy protection
C. Supports expansion by addition of nodes to increase both computing capability and storage space
D. Supports storage resource pooling and virtualization
Which of the following statements correctly describe the improvements of SAS technology compared
to SCSI? Select All that Apply.
A. Lower cost than SCSI
B. Full duplex transmission of data
C. Half duplex transmission of data
D. Higher throughput
A company purchased DAS devices to store files and service data at the startup stage. With the
increase of service volume and diversity, which problems may occur? (Select All that Apply)
A. It is difficult to expand the capacity of the DAS architecture after the data volume increases to a
certain level.
B. Data and materials are scattered on different devices and cannot be managed in a centralized
manner.
C. As the number of file servers increases, no more servers can be added to share the DAS storage
D. Data and materials are scattered on different devices and hard to be searched for
Which of these are O&M standard systems? (Select All that Apply)
A. International Organization for Standardization 2000 (ISO2000)
B. Institute of Electrical and Electronics Engineers (IEEE)
C. Information Technology Infrastructure Library (ITIL)
D. Storage Networking Industry Association (SNIA)
What are the main functions of the business continuity solution? (Select All that Apply)
A. Minimize the impact on the business service.
B. Predict the disaster occurrence accurately
C. Zero data loss and zero service interruption.
D. Improve the utilization rate of the disaster recovery equipment
Which statements are true about the SAN network? (Select All that Apply)
A. The FC SAN must be configured with dedicated iSCSI HBAs for servers
B. The IP SAN can use the existing IP network
C. The IP SAN supports the iSCSI protocol.
D. The FC HBA used by the FC SAN can convert SCSI packets into FC packets.
A bank purchases a new storage device. During the RAID level configuration, the bank requires that
data reliability be improved and parity data be stored on different disks. Which RAID levels can meet
the requirements? (Select All that Apply)
A. RAID 0
B. RAID 5
C. RAID 3
D. RAID 6
Which statements are true about RAID 2.0+? (Select All that Apply)
A. An extent is a block of a fixed size in a chunk group (4 KB by default).
B. A chunk group is a logical set of chunks on different disks.
C. Chunks, which are blocks obtained by dividing each disk at a fixed size, are basic units of a RAID
group
D. A chunk group is the minimum unit for applying for and releasing space in a storage pool
Suppose, for cost control reasons, a startup company can acquire only one storage device to provide
services. However, its services require high hardware reliability, so an engineer recommended a
Huawei OceanStor all-flash storage system. Which statements describe the high reliability of the
storage system? (Select All that Apply)
A. It supports clusters consisting of multiple controller enclosures to improve the availability of the
storage system
B. Interconnect I/O modules shorten failover time when a controller fails to provide better reliability,
as compared with common I/O modules.
C. Standard I/O modules shorten failover time when a controller fails to provide better reliability, as
compared with interconnect I/O modules.
D. When a controller fails, l/Os of the faulty controller are redirected to another controller The host is
unaware of the fault and services remain running properly
Which statements are true about a dual-controller storage system? (Select All that Apply)
A. There are two working modes: active-standby and active-active.
B. In active-standby mode, if one controller is faulty, services are not affected
C. When one controller is faulty, the service failover in active-active mode is more efficient than that in active-stand by mode
D. In active-standby mode, only one controller works at a time
Which statements are true about the ports of a Huawei OceanStor all-flash storage device? (Select All that Apply)
A. Bond ports, VLANs, and logical ports are created based on available Ethernet ports
B. The networks and services between VLANs are physically isolated, which improves the security and reliability of service data.
C. Multiple Ethernet ports of the same controller are bonded to form a bond port to increase the bandwidth
D. Multiple logical ports can be created for a bond port, but only one logical port can be created for an Ethernet port
