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NEW QUESTION 148
The following are the advantages of SSD hard drives compared with mechanical hard drives. The description is correct: (multiple choices)
- A. SSD disk at a time is more suitable for use in scenarios that require large storage capacity
- B. SSD can be used in some harsh environments, such as high temperature and humidity, strong earthquakes and other harsh environments.
- C. No high-speed rotating parts, high performance
- D. Support TCQ/NCQ, corresponding to multiple IO requests
Answer: B,C,D
NEW QUESTION 149
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)
- A. After the snapshot is rolled back, the data of the source LUN becomes the data of the modified snapshot LUN at 10:00
- B. The data in the copy space before COW is 9:00 LUN A
- C. The data of the source LUN is the modified data at 10:00
- D. The data in the copy space before COW is 10:00 LUN A data
Answer: A,B,C
NEW QUESTION 150
Using RAID 2.0+ technology the rebuilding time, when a disk fails, is much shorter than with traditional RAID.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 151
Extent of RAID2.0+ technology is the basic unit of which technology in the storage pool? (Multiple choice)
- A. Application space
- B. Statistics
- C. Data migration
- D. Free up space
Answer: A,B,C,D
Explanation:
Explanation
Analysis: Extent is a fixed-size logical storage space divided on the basis of CKG, the size is adjustable, and it is a hot data system.
The smallest unit of accounting and migration (data migration granularity) is also the smallest unit of applying space and releasing space in the storage pool.
NEW QUESTION 152
Statement 1: If possible it is always advised to make only Full Backups.
Statement 2: LAN free backups typically run slower than LAN based backups.
- A. Statements 1 and 2 are both true.
- B. Statement 1 is true and statement 2 is false.
- C. Both statements 1 and 2 are false.
- D. Statement 1 is false and statement 2 is true.
Answer: B
NEW QUESTION 153
It is a device which manages the physical disk drives and presents them to the users as logical units. Which of the following device fits the above description?
- A. Storage Cache.
- B. Storage Controller.
- C. Storage NIC.
- D. Host.
Answer: B
NEW QUESTION 154
Host-level disaster recovery has less investment and better compatibility.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 155
CIFS can be run on UDP as well as on TCP
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 156
Regarding the common components of ICT, is the following statement correct?
- A. Storage array usually refers to equipment that provides data storage
- B. Common components of ICT include host, storage array, switch, and network
- C. The switch is also called a switching hub, which mainly works on a three-layer network
- D. The mainframe is also called a server, referring to some computers with higher specifications in some enterprises
Answer: A,B,D
NEW QUESTION 157
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. The random read performance of RAID 5 is lower than RAID 10
- C. The random write performance of RAID 5 is higher than RAID 10
- D. If the front-end pressure is sufficient, the sequential write performance of RAID 5 is higher than that of RAID 10.
Answer: D
NEW QUESTION 158
Deduplication and compression can only be enabled for Thin LUNs.
- A. FALSE
- B. TRUE
Answer: B
Explanation:
Explanation
Resolution: Only thin LUN can enable deduplication.
NEW QUESTION 159
Is the following statement correct?
- A. OceanStor V3 series products support RAID 0/RAID 1/RAID 5/RAID 10, but not RAID 6
- B. After using RAID 5 with 6 200G hard drives, the available space is 1200G
- C. 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
C, S2200 V3 can support SSD, SAS, SATA hard drives
Answer: C
Explanation:
Explanation
Resolution: The hard disk types supported by OceanStor 2200 V3 are: SAS, NL-SAS and SSD, and SATA is not supported. OceanStor V3 series product support
NEW QUESTION 160
What is the synchronization cycle time limit for asynchronous remote replication?
- A. 3s~300min
- B. 1s~300min
- C. 1s~144min
- D. 3s~144min
Answer: D
Explanation:
Explanation
Resolution: 3 seconds to 1440 minutes
NEW QUESTION 161
Which of the following best describes SDN?
- A. Decoupling of the data plane and control plane in networks.
- B. The virtualization of network services to achieve better efficiency and scalability.
- C. Using a software program to manage your network.
- D. Using hardware to manage the network.
Answer: A
NEW QUESTION 162
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.
- A. Statements 1 and 2 are both true.
- B. Statement 1 is true and statement 2 is false.
- C. Both statements 1 and 2 are false.
- D. Statement 1 is false and statement 2 is true.
Answer: C
NEW QUESTION 163
Which of the following is the correct configuration process for Huawei OceanStor V3 storage system?
- A. Create storage pool -> create LUN -> add mapping
- B. Create LUN->Create storage pool->Add mapping
- C. Create LUN->Add Mapping->Create Storage Pool
- D. Create storage pool -> add mapping -> create LUN
Answer: A
NEW QUESTION 164
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. Downgrade
- B. invalid
- C. Normal work
- D. Refactoring
Answer: A
NEW QUESTION 165
Which of the following technologies are able to quickly obtain valuable information from a variety of data types in a short period of time from a collection of vast amounts of data?
- A. Big Data.
- B. Cloud.
- C. Social Media.
- D. Internet Of Things.
Answer: A
NEW QUESTION 166
Regarding the description of Huawei OceanStor storage system safe disk, which of the following is correct?
(Multiple choice)
- A. When an unexpected power failure occurs, the BBU supplies power to the cache and safe disk
- B. When the device is powered off, the safe disk stores the data in the cache to prevent data loss
- C. Only the first two disks in the controller cabinet are used for safe disks
- D. Safe disk cannot be used to store user data
Answer: A,B
Explanation:
Explanation
Analysis: There are two kinds of safe disks in the storage system: built-in safe disks and external safe disks.
Safe disk is used to protect
Stores data of the storage system, system configuration information and logs, and data in the cache after the system is powered off. Panel control integrated control box The first four hard disks or the first four hard disks in the first disk enclosure in the disk-controlled storage system are planned as coffer disks. safe Disks must use SAS, NL-SAS or SSD hard drives, and the hard drives of the four coffer disks must be the same type.
NEW QUESTION 167
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