H13-622 : Huawei Certified Network Professional- Constructing Big Data Solution : Part 12
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In the big data era, all industries face challenges in processing.
Which are challenges faced by the public security and criminal investigation fields? (Choose all that apply.)
- It takes a long time to manually view numerous videos.
- Poor real-time analysis capability decrease the efficiency in solving a criminal case.
- A variety of image forma& decrease the query efficiency.
- Data is distributed, making data sharing difficult.
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In OceanStor DFS, the MDS cluster arranges metadata of a file system in subtrees, and stores the subtrees on different nodes.
- True
- False
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Which of the following statements about the characteristics of Huawei OceanStor 9000 is false?
- Huawei OceanStor 9000 adopts a symmetric logical architecture and load balancing, greatly improving the capability to process concurrent access requests.
- Huawei OceanStor 9000 uses a global cache to store one copy of all data.
- Huawei OceanStor 9000 does not allow users to access OceanStor DeviceManager through HITTPS.
- Huawei OceanStor 9000 supports smooth and linear expansion of capacity and performance.
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In OceanStor 9000 object storage, inter-node redundancy is implemented for metadata through mirroring. Each copy of metadata is independent and complete, improving metadata integrity and the performance of parallel access to metadata.
- True
- False
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Which are application scenarios of the InfoReplicator feature provided by Huawei OceanStor 9000? (Choose all that apply.)
- Service disaster recovery
- Data distribution
- Data access at the secondary site
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Which of the following about WushanFS global cache technology employed by Huawei OceanStor 9000 is false?
- WushanFS global cache enables the memory spaces on all storage servers to logically form a unified memory resource pool.
- Data cached on a node cannot be hit by the read/write service of another node.
- Global cache helps improve the sharing of memory resources among nodes.
- The WushanFS uses a distributed lock mechanism to implement global management of cached data. The same service data is cached only on one node. Another node that needs to access the service data can apply for a lock to obtain the cached data.
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If a third-party cabinet is used in the equipment room, which aspects must be checked? (Choose all that apply.)
- Load bearing capability of the equipment room floor.
- Cabinet parameters.
- Power supply system of the cabinet.
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Which of the following are the CMS cluster’s functions? (Choose all that apply.)
- Monitoring management
- Collecting logs
- Reporting alarms
- Upgrading firmware
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The cloud storage system is a comprehensive storage system that features convergence, openness, and high flexibility. It supports pooling for hardware resources of different vendors and specifications and provides protocols and APIs required for the block, file, and object storage service.
- True
- False
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Which of the following statements about block storage management is incorrect?
- Administrators can view the volumes created by project users and administrators.
- Administrators can create, view, or delete block storage service levels.
- If the status of a volume fails to be updated in a timely manner, administrators can manually update the status.
- Storage resources are allocated to users through block resource pools. Administrators can view, modify, or delete resource pools.
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Huawei OceanStor 9000 uses the erasure code technology to protect data. A site has six nodes, and the customer requires that data can be restored if three of the disks where a stripe is distributed are faulty.
Which redundancy levels can be used to meet the requirement? (Choose all that apply.)
- 4+3:1
- 6+3
- 4+2
- 6+4:1
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Which types of nodes are provided by Huawei OceanStor 9000? (Choose all that apply.)
- High-performance storage node
- Large-capacity active node
- Data storage node
- Data processing node
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The municipal public security bureau of a city needs to periodically archive each police station’s video surveillance data.
If the solution provided by Huawei OceanStor 9000 is used in this scenario, which node type should be recommended?
- P12 node
- P24 node
- P36 node
- P72 node
- C36 node
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Which of the following statements about InfoTier node pools in Huawei OceanStor 9000 are true? (Choose all that apply.)
- All nodes in a node pool must be of the same type.
- If an OPS-intensive application scenario, it is recommended that node pools consist of P nodes.
- A node pool that consists of P nodes must contain a minimum of three nodes.
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Which types of nodes are supported by Huawei OceanStor 9000? (Choose all that apply.)
- P12
- P25
- P36
- C36
- C72
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Which of the following statements about data protection functions provided by Huawei OceanStor 9000 is false?
- Huawei OceanStor 9000 uses the erasure code technique to provide N+M redundant storage of data.
- Huawei OceanStor 9000 uses the mirroring technique to provide redundant storage of metadata.
- If physical domains are used, the failure of a disk or node in one domain will deteriorate the data reliability of other domains or even cause data loss.
- If the protection level is N+1, a cluster requires a minimum of three nodes.
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Huawei OceanStor 9000 uses the DFS to consolidate disk resources of all nodes, providing a unified namespace.
- True
- False
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Which is the automatic load balancing mode supported by the InfoEqualizer feature of Huawei OceanStor 9000 by default?
- By node connection count
- Round-robin
- By node throughput
- By comprehensive node load
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Which of the following statements about OceanStor 9000 hardware characteristics is incorrect?
- A P25 node is a 2 U high-performance storage device and applies to OPS-intensive applications. It has 25 front-end service disk slots and two back-end 2.5-inch system disk slots.
- All types of storage nodes support inserting one SSD in slot 0 as the read cache to improve system read performance.
- When the OceanStor 9000 is networked using IB switches, each node is equipped with 2-port IB network adapters, each of which provides two 40GE QSPF+ Ethernet optical ports to connect to the IB switches.
- A C72 node is a 4 U large-capacity archive storage node and applies to large-capacity applications. It has 72 service disk slots and four system disk slots.
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A storage cluster has five C72 nodes and adopts 10GE networks at the front and back ends.
When distributed file system service and object storage service are both deployed on nodes, how many IP addresses should be planned for the front-end service network?
- 61
- 71
- 81
- 91
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