A reliable ICT infrastructure, to avoid a single point of equipment failure, or even a single point of personnel problems.
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.
The following are the advantages of SSD hard drives compared with mechanical hard drives. The description is correct: (multiple choices)
The multipath load balancing strategy used by HUAWEI OceanStor storage products is the default?
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.
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.
From the perspective of the cloud computing business model, Huawei network disks belong to PaaS.
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 answer: B
The SmartCache feature in HUAWEI OceanStor series products can only improve read performance, not write performance.
The SmartTier intelligent data grading feature requires three types of hard drives in the storage pool.
Which of the following is not a backup type?
FC relies on a dedicated FC network and can easily form storage islands.
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?
Host-level disaster recovery has less investment and better compatibility.
According to the changes in the amount of backup data, the types of backup can be divided into:
Extent of RAID2.0+ technology is the basic unit of which technology in the storage pool? (Multiple choice)
The NAS device performs functions such as file service, storage, retrieval, and file access on the basis of a general-purpose server
optimization.
Among the components of the mechanical disk, the parts responsible for reading and writing data are:
What is the synchronization cycle time limit for asynchronous remote replication?
Is the following description about Quota tree correct?
A, Quota tree is a first-level directory under the file system
B. Only administrators can create, delete, rename, etc. through the command line or GUI management interface.
Users can delete the empty Quota tree
C, Quota tree can be renamed and deleted when sharing through agreement
D. Ordinary users can perform quota management on the number or capacity of files under Quota Tree
The following description about the characteristics of the LAN-BASED backup method is incorrect:
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; NAS systems must be interconnected using fiber optic cables. Statement 2: A network protocol is the way in which an operating system accesses a file that is on a network connected device.
Which of the following statements are true for a NAS solution?
(Multiple Choice)
Because they are cheap and still have a large capacity we can say that cMLC Solid State Disks are ideal for storing MP3 files and JPGs at home.
Which of the following would best describe a virus?
About HUAWEI OceanStor, the following 2 statements:
Statement 1: With the SmartTier feature the SSD disks are in the Performance Tier.
Statement 2: No more than 3 tiers can exist in the OceanStor V3 storage arrays.
What does the term RPO mean?
Which of the following statements about storage file systems is incorrect?
Statement 1: Synchronous replication is often possible over distances of more than100k
Statement 2: Asynchronous replication must be used when the host has a file system that is Linux based.
Situation: Disk Domain A has 40 disks, Disk Domain B has 20 disks. True or False: the rebuild time for a failed disk in Disk Domain B is longer than for a failed disk in Disk Domain A.
A differential backup holds all changes that were made since the last successful full backup.
Statement 1: RAID 2.0+ is NOT based on traditional RAID technologies.
Statement 2: RAID 2.0+ has excellent rebuild characteristics.
Incremental backup requires the last full backup and each incremental backup to fully restore data. Data reconstruction is therefore slower compared with full backups.
The failure of an SSD is more predictable than that of other disk technologies.
For random access to mechanical disks, the most significant impact on the time it takes to complete an IO is:
Huawei OceanStor series storage system hardware includes controller enclosures and disk enclosures. Which of the following statements about controller enclosures are correct?
Most of the data generated by the Internet industry is structured data, which accounts for about 80% of the total data.
Match the RAID level with the characteristics. (1) RAID 0 (2) RAID 5 (3) RAID 10 (4) RAID 6 (a) Cost effective (b) Allows double disk failure (c) Highest performance (d) No data protection
Which of the following statements about the coffer disks of the HUAWEI V3 series storage systems are correct?
(Multiple Choice)
It is an electronic device controlled by a motor that moves the hard drive head arm. Which of the following component fits the above description?
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)
The SATA connector can support both SATA and SAS hard drives.
In Huawei RAID 2.0+, is the description about chunck and extent correct?
What are the application scenarios of the SAN solution? (Multiple choice)
What are the challenges facing traditional data centers? (Multiple choice)
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.
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.
Regarding the advantages of DAS, the following description is correct: (multiple choice)
Snapshots used for backup purposes should be set to read-only to prevent modification by other applications and affect the backup data
consistency.
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.
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Distributed object storage has a unified namespace, and supports online expansion.
Which of the following is the advantage of object storage? (Multiple choice)
The initial capacity allocation strategy of HUAWEI OceanStor storage system defaults to automatic allocation.
What is the correct description of the advantages of Huawei RAID 2.0+?
What is the role of multi-path software? (Multiple choice)
The following different types of SSD disks have the lowest unit capacity price:
A, SLC
B, eMLC
C, cMLC
D, 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.
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.
A, yes
B, wrong
According to the physical location of the NAS engine and storage device, the NAS is divided into: (multiple choices)
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.
A, description 1 is correct, description 2 is correct
B. Description 1 is right, description 2 is wrong
C, description 1 is wrong, description 2 is right
D. Description 1 is wrong, description 2 is wrong
Which statements are true about HyperMetro? (Select All that Apply)
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.
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)
Deduplication and compression can only be enabled for Thin LUNs.
Which of the following is the most widely used FC topologies?
What versions of the NFS protocol are there? (Multiple choice)
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)
Which of the following statements correctly describe the improvements of SAS technology compared to SCSI? Select All that Apply.
SmartKit is an O&M tool that integrates cloud computing, server, and storage. It cannot be used to monitor third-party devices.
Which of the following RAID levels has the lowest hard disk space utilization?
Which of these are O&M standard systems? (Select All that Apply)
NAS provides file sharing services through protocols such as NFS and CIFS.
Which of the following operating systems can access CIFS shares without installing additional software?
Which of the following is incorrect regarding the differences of IP SAN and FC SAN?
A device has only one WWNN number, but it can have multiple WWPN numbers.
When the RTO requirement is within 10 minutes, the traditional tape backup method is not recommended.
FTP is a very secure protocol with no security risks.
Which statements are true about the ports of a Huawei OceanStor all-flash storage device? (Select All that Apply)
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)
Regarding the common components of ICT, is the following statement correct?
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