Huawei Huawei Certifications H13-622 Questions & Answers

• Question 261:

  Based on full interconnection of data channels and communication channels, a clustered NAS system employs cluster volume management to manage global storage space. Specifically, any nodes in a cluster can access the same storage space using the same volume device name, ensuring access consistency.

  A. True

  B. False

  Correct Answer: A

• Question 262:

  Which of the following issues are resolved by big data storage security technology? (Select three)

  A. Integrity

  B. Confidentiality

  C. Availability

  D. Continuity

  Correct Answer: ABC

• Question 263:

  Which of the following disks are used by an N8500 clustered NAS engine as system disks?

  A. Fibre Channel disks

  B. SAS disks

  C. SATA disks

  D. SSDs

  Correct Answer: D

• Question 264:

  Which of the following are included in Hadoop? (Select three)

  A. HDFS

  B. HBase

  C. MapReduce

  D. MPP DB

  Correct Answer: ABC

• Question 265:

  Compared with traditional RAID algorithms, the erasure code redundancy technology used by Huawei OceanStor 9000 provides higher reliability and more flexible redundancy policies. Which of the following statements about the erasure code is incorrect?

  A. Data to be written is divided into N data blocks of the same size.

  B. The erasure code algorithm calculates M parity blocks for every N consecutive data blocks. (The value of M is smaller than that of N.)

  C. N+M data blocks are concurrently stored to different disks.

  D. In erasure code storage mode, the storage system tolerates a concurrent failure of N-l disks at most.

  Correct Answer: D

• Question 266:

  Which of the following statements about the file system used by the OceanStor 9000 is incorrect?

  A. The file system provides a unified file system namespace.

  B. The name of the namespace provided by the file system is the same as the system name.

  C. The root directory of the namespace does not provide sharing or access.

  D. Added capacity can be directly obtained from the storage pool.

  Correct Answer: C

• Question 267:

  In performance optimization of the N8500 clustered NAS storage systems, the top command is runand the following output is displayed: top - 01: 06: 48 up 1: 22, 1 user, load average: 0.06, 0.60, 0.48 Tasks: 29 total, 1 running, 28 sleeping, 0 stopped, 0 zombie Cpu(s): 0.3% us, 1.0% sy, 0.0% ni, 98.7% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 191272k total, 173656k used, 17616k free, 22052k buffers Swap: 192772k total, 0k used, 192772k free, 123988k cached

  Which of the following statements is incorrect?

  A. up 1:22 indicates the current system time.

  B. load average indicates the average length of task queues.

  C. 0.3% us in Cpu(s) indicates the CPU occupation percentage of user space.

  D. 17616k free in Mem indicates the total capacity of free memory.

  Correct Answer: A

• Question 268:

  An OceanStor 9000 storage system uses GE for the front-end network and 10GE for the back- end network. Which of the following statements is incorrect about the ports on the P node as shown in the figure?

  

  A. Ports AO-1 and AO-1 are connected to the 10GE switch. A back-end network IP address must be planned for each of the two ports.

  B. Ports B3-0 and B3-1 are connected to the front-end service switch. A front-end network IP address must be planned for each of the two ports.

  C. NIC 0 is connected to the management and maintenance switch. You do not need to assign an IP address for this port.

  D. Port IPMI is connected to the management and maintenance switch. You do not need to assign an IP address for this port.

  Correct Answer: D

• Question 269:

  A NAS storage system supports file system sharing, and the underlying protocol transmits data based on iSCSI.

  A. True

  B. False

  Correct Answer: B

• Question 270:

  Which of the following statements about the file system mirroring feature provided by an N8500 clustered NAS system are incorrect? (Select two)

  A. The N8500 supports a maximum of two mirrors for a single file system.

  B. Resources of different storage pools can be selected to implement file system mirroring.

  C. File system mirroring allows users to select three mirroring layout types.

  D. In the same service scenario, mirrored-stripe and striped-mirror provide the same data reliability and performance.

  Correct Answer: AD