H13-622 : Huawei Certified Network Professional- Constructing Big Data Solution : Part 02
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Which of the following statements about Huawei OceanStor 9000 are true? (Choose all that apply.)
- The MDS service manages file system metadata.
- The DS service stores file data but not metadata.
- The CMS service manages physical nodes in a cluster.
- Some nodes provide the MDS service and some nodes provide the DS service.
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Scale-out is a horizontal expansion architecture that addresses the needs and challenges caused by rapid data growth and complex data changes. The scale-out architecture features distributed processing, online expansion, data sharing, and clustering.
- True
- False
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Multiple users access a multimedia VOD application at different bit rates. Which prefetch policy should be selected for the LUNs on the background N8500 clustered NAS storage system?
- No prefetch
- Constant prefetch
- Intelligent prefetch
- Variable prefetch
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You can check VCS cluster logs by viewing the Engine_A.log file in the /var/VRTSvcs/log directory on an N8500 storage system.
- True
- False
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A 2-node N8500 clustered NAS engine is a 4 U enclosure. The heartbeat links between the two nodes are set up based on the internal PCIe channels.
- True
- False
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Which command is used to check whether a file system is mounted using the support account for N8500 V200R001?
- cfsmntadm display
- cfsmountadm display
- cfsmntadm show
- cfsmountadm show
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In an N8500 clustered NAS system, the engine enclosures exchange cluster control information over a Fibre Channel heartbeat network.
- True
- False
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In an N8500 system, if an engine node is faulty and the other components are in the normal state, the consequences do not include which of the following?
- The N8500 cannot be managed.
- LUNs on the storage units become unavailable.
- Service performance deteriorates.
- The NFS file sharing service becomes abnormal.
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Which of the following are possible challenges facing massive data management? (Select two.)
- How to implement quick data searches for higher retrieval efficiency
- How to ensure data authenticity and prevent data cheating
- How to implement PB-level storage of various data
- How to save storage resources by reducing the data amount
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Which are the possible causes for file read/write performance decrease? (Select three)
- A slow disk or bad sector exists,
- The Fibre Channel port has a high bit error rate.
- The LUN has been set to write back.
- The prefetch policy does not apply to service data changes.
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If the service disk in slot 35 on a C node of the OceanStor 9000 is faulty, you are supposed to find this disk at the front panel of the C node and then replace it.
- True
- False
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Before installing software for an OceanStor 9000 storage system, you must prepare required tools, cables, and software packages. Which of the following statements about this preparation is incorrect?
- The SSH client software is required for remote access.
- An FTP upload tool is required for uploading installation packages to storage nodes.
- The OceanStor 9000 storage system software is required, which contains the OceanStor SystemReporter suite.
- A network cable is required for connecting the management PC to the OceanStor 9000 management network port.
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Which of the following statements about the configuration of the file system snapshot feature provided by an N8500 clustered NAS system are incorrect? (Select two)
- A file system snapshot can be created manually or automatically.
- The maximum number of snapshots created for a file system is 256.
- A snapshot that is automatically created is in online state by default.
- A snapshot can be automatically removed by the system.
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In an N8500 clustered NAS system, at most how many 1 Gbit/s service ports can a single clustered NAS engine node provide?
- 4
- 8
- 12
- 16
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In Huawei OceanStor 9000, a file pool is a collection of files that have specific characteristics. A file pool policy defines rules for storing a file pool in a node pool.
- True
- False
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Which of the following statements about the CIFS share are correct? (Select two)
- CIFS normal share enables a directory to be accessed by all users.
- CIFS homedir share enables a directory to be accessed by all users.
- In Normal mode, a client can access a share through only one VIP.
- Compared with the Normal mode, the Cluster mode provides higher data reliability but lower performance.
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An N8500 clustered NAS engine can be connected to a SAN storage array over a Fibre Channel network and a SAS network concurrently.
- True
- False
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In the IB networking solution of the OceanStor 9000, which of the following statements about the IP address planning of the front-end service network is correct?
- Two static IP addresses on the front-end service network must be planned for each node.
- Four dynamic IP addresses on the front-end service network must be allocated to each node for the IP address pool used by the InfoLink function.
- One InfoLink DNS IP address on the front-end service network must be planned.
- One floating IP address on the front-end service network must be planned for each node.
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Which of the following statements about the N8500 configuration prerequisites are correct? (Select three)
- The heartbeat network ports of the clustered NAS engine are correctly connected to the heartbeat network.
- The service network ports of the clustered NAS engine are not connected to the customer’s service network before they are configured.
- The clustered NAS engine is correctly powered on and the statuses of the indicators are normal.
- Hardware installation and cable connection of the clustered NAS engine are complete.
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Which of the following statements about the CIFS protocol are true? (Choose all that apply.)
- CIFS transmits data based on TCP.
- CIFS transmits data based on UDP.
- CIFS is a file sharing protocol used in Linux.
- CIFS is a file sharing protocol used in Windows.
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