2021 Huawei H19-308-ENU Free Practice Test

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Page 1 of 8

1. Does OceanStor F V5 support 3.5-inch SSDs?

Yes

2. Which disks are supported by 2200 V3? (Multiple Choice)

3.5- inch HDD SAS

3.5- inch SSD disk

3.5- inch NL-SAS disk

2.5- inch SAS disk

2.5-inch SSD disk

3. Which of the following disk enclosures are supported by the 2200 V3? (Multiple Choice)

2 U, 12 disks

2 U, 25 disks

4 U, 24 disks

2 U, 24 disks

4. Which features are available for OceanStor 9000? (Multiple Choice)

File Aggregation

Hyper Clone

Video Repairing Technology

Remote Replication

5. In SmartMulti-Tenant, a vStore is managed by only one tenant administrator, and vStDres are isolated from each other.

TRUE

FALSE

6. Which of the following RAID levels has the lowest capacity utilization?

RAID 0

RAID 1

RAID 3

RAID 5

7. What are the performance-optimized technologies of the OceanStor F V5 series? (Multiple Choice)

Optimization of CPU cores

Adaptive cache algorithm

Intelligent I/O scheduling

8. Which RAID level does not provide data protection?

RAID 10

RAID 5

RAIDO

RAID 6

9. Which types of host ports are supported by the 2200 V3? (Multiple Choice)

16/8 Gbit/s FC

10 Gbit/s iSCSI

1 Gbit/s iSCSI

10 Gbit/s FCoE

SAS

10. What are the major changes of OceanStor V5 compared with OceanStor V3?

Hardware upgrade

Software re-written

Both hardware and software completely changed

Page 2 of 8

11. Which are the customer benefits of Huawei storage RAID 2.0+? (Multiple Choice)

Substantial performance improvement

Fast data reconstruction

Automatic global load balancing

12. Which RAID levels does Dorado V3 support? (Multiple Choice)

RAID 10

RAID 5

RAID 6

RAID TP

13. Which is not a front-end port of Dorado V3?

8 Gbit/s and 16 Gbit/s FC

40 Gbit/s inf in iBand

56 Gbit/s InfiniBand

10 Gbit/s iSCSI and FCOE

14. What is the major difference between OceanStor 6800 V5 and OceanStor 6800 V3?

Number of supported disks

Number of scalable controllers

Back-end full interconnection

15. SmartVirtualization enables heterogeneous storage resources to be managed in a unified manner.

TRUE

FALSE

16. What are the advantages of OceanStor 9000? (Multiple Choice)

Single file system

Symmetric architecture, expand on demand

Distributed RAID use Erasure Code

Intelligent archiving

17. OceanStor F V5 series are hybrid-flash storage systems.

TRUE

FALSE

18. Which of the following solutions are supported by the Dorado V3? (Multiple Choice)

Database acceleration

VDI

SAP TDI

NAS sharing

19. 2600 V3 supports hot-swappable 12G SAS interface module

TRUE

FALSE

20. OceanStor 9000 supports_____editing of media?

20-layer 4K

6-layer 4K

10-layer 4K

2-layer 4K

Page 3 of 8

21. Which types of node can OceanStor 9000 support? (Multiple Choice)

P12E

P25E

P36E

C36E

C72

22. Which is the customer benefit of Smart Virtualization?

Storage resources in "pay-as-you-use" mode, reducing the upfront investment

Heterogeneous virtualization, consolidating mainstream vendors' storage into resource pools

Unified management of high-end, mid-range, and entry-level storage, improving management efficiency

23. What are the software features supported by the Dorado V3? (Multiple Choice)

SmartDedupe and SmartCompression

HyperSnap and HyperClone

HyperReplication and HyperMetro

QoS and Cache Partitioning

24. Which are the advantages of Dorado V3? (Multiple Choice)

4 million IOPS at 0.5 ms latency 10X storage performance improvement

1 ms gateway-free active-active solution 99.9999% field-proven availability

3x data reduction guarantee, 50% TCO saving

Simplified management, deployment in 10 minutes

25. Which of the following statements is NOT correct about SAN?

SAN includes IP SAN and FC SAN

Server and storage equipment are connected through storage network

Application server and storage equipment can be expanded separately

SAN can provide file access and file sharing services

26. Dorado V3 supports the HyperMetro solution.

TRUE

FALSE

27. Which are the customer benefits of SmartThin (Thin Provisioning)? (Multiple Choice)

Expand capacity on demand

Reduce initial purchase cost

Improve storage capacity utilization

Reduce total cost of ownership

Reduce the amount of data

28. Which is used for disk pre-copy with Huawei RAID 2.0+?

Hot spare disks

Hot spare space

New disks

Coffer disks

29. iSCSI is implemented based on TCP/IP and has better scalability than FC.

true

false

30. Which model supports expansion of up to 32 controllers?

OceanStor Dorado 3000 V6

OceanStor Dorado 5000 V6

OceanStor Dorado 6000 V6

OceanStor Dorado 18000 V6

Page 4 of 8

31. Which statement about the S3 protocol is incorrect?

Buckets can be nested.

Objects are always stored in buckets.

Objects can be accessed using HTT

The S3 is an object access protocol proposed by Amazon.

32. The RPO of a storage product is 30 minutes and the RTO is 15 minutes. Which statements are correct?

If the storage system is faulty, there may be 30 minutes of data differences between the production site and the disaster recovery site.

If the storage system is faulty, there may be 45 minutes of data differences between the production site and the disaster recovery site.

It may take 15 minutes to bring one or more applications back from an outage to a correct running state.

It may take 45 minutes to bring one or more applications back from an outage to a correct running state.

33. Which are NAS quota technologies in the industry?

Hard

Soft

Advisory

Limit

34. Which statements about enterprise-level and desktop-level disks are correct?

Enterprise-level disks are designed for enterprises. They are mainly used on servers, storage arrays, and graphics workstations.

Desktop-level disks are mainly used on PCs and laptops.

The performance differences between enterprise-level and desktop-level disks lie in the rotational speed, cache, and average seek time.

Compared with desktop-level disks, enterprise-level disks deliver lower reliability and longer mean time between failures (MTBF).

35. Which systems are included in the data center infrastructure?

Electrical system (high-voltage system)

Air conditioning system

Lighting system

Fire extinguishing system

Low-voltage system (communication cables such as network cables)

36. What are the trends of future data centers?

Modular data center

Smart data center

Green data center

Cloud data center

37. What does a cloud data center provide?

IaaS

PaaS

GaaS

SaaS

38. What are the phases of a data center lifecycle?

Design

Construction

Relocation

Operation

39. Which interfaces are supported by OceanStor V5 Kunpeng?

32 Gbit/s FC

25 GE

40 GE

100 GE

40. Which statements about the core customer benefits (selling points) of Huawei OceanStor Dorado are correct?

It has the most reliable architecture in the industry.

It delivers the fastest I/O processing capability in the industry.

It implements automated O&M using Ascend AI chips. FlashEver provides free upgrade to the latest generation in the next decade, and frees users from data migration.

Page 5 of 8

41. Each LUN on Dorado V6 is owned by a specific controller.

True

False

42. SmartQoS allows preferential response to high-priority services. (True or False?)

True

False

43. To reduce costs, general-purpose servers are commonly used for object storage.

True

False

44. During the interaction between the server and SAN storage, the server encapsulates data in SCSI commands and implements data interaction through various network transmission protocols.

True

False

45. A storage pool is a logical combination of multiple storage tiers. A storage tier is a collection of storage media with the same performance in a storage pool.

True

False

46. In NAS cross-protocol access, the Windows permission is the same as the Linux permission.

True

False

47. Incremental backup requires the full backup and incremental backup of the last time to fully restore data.

Data reconstruction is slower than that of full backup, resulting in a long restoration period.

True

False

48. The recovery time objective (RTO) in a disaster recovery system refers to the time point to which the system and data must be recovered after a disaster occurs.

True

False

49. What is the maximum number of disks supported by the OceanStor 2200 V3?

300

500

204

276

50. What is the maximum redundancy ratio supported by high-ratio EC?

22+2

16+2

20+2

18+2

Page 6 of 8

51. How many cabinets does Huawei OceanStor distributed storage allow to fail?

52. What is the specification of the OceanStor Dorado V6 high-end controller?

3 controllers per 3u

4 controllers per 4u

4 controllers per 3U

2 controllers per 2u

53. How many controllers can be used when only one LUN is configured on Dorado V6?

All online controllers

54. SmartTier is a tiering feature of file systems.

What is the granularity of tiered migration?

Single file

File system

File directory

55. Which protocol is used for interconnection between controllers of OceanStor V5 Kunpeng?

PCl-e

RDMA

56. Which of the following technologies is not used by Huawei OceanStor SmartQoS?

I/O latency control

I/O priority scheduling

Cache partitioning

I/O flow control

57. Assume that an application generates about 8,400 random small I/Os, the read/write ratio is 21, and RA..

5 is used. If no requested data is hit in the cache (COW mode), what is the IOPS required by the disk arr….

11200

22400

4800

16800

58. A bank needs to store a large number of images of checks every day due to increasing service volume. The existing storage system cannot meet the capacity requirements, so it now takes much longer to retrieve data.

Which is the most suitable storage system type?

DAS

SAN

NAS

Object Storage

59. Which between NVMe (PCle) and NVMe-oF (RoCE v2) features better scalability?

NVMe-oF (RoCE v2)

NVMe (PCle)

60. Which protocol is not a front-end protocol of SAN?

InfiniBand

NFS

FCoE

Fiber Channel

iSCSI

Page 7 of 8

61. Which statement about storage software is incorrect?

LUN copy supports only full copy.

Deduplication is a data reduction technology that deletes duplicate data to release system space.

LUN copy copies the source LUN in a disk array to a target LU

A snapshot is a fully usable copy of a specified data set.

62. Which ascending order of disaster recovery levels is correct?

Module level -> system level -> solution level

Solution level -> module level -> system level

System level -> solution level -> module level

Module level -> solution level -> system level

63. In the medical PACS system, X-ray, MRI, CT, and ultrasound tests generate a large number of image files every day. The file size ranges from 100 KB to 1 MB.

Which Huawei NAS product is recommended?

FAS9000 series

Oceanstor 9000

OceanStor V5 NAS

Unity series

64. Which indicator indicates the time required for system recovery after a disaster occurs?

RTO

RPO

TCO

RIO

65. What is the name of the multi-pathing software of Huawei storage?

UltraPath

SecurePath

MPIO

PowerPath

66. During Huawei OceanStor Kunpeng V5 and Dorado V6 controller expansion, which switch is used for controller inter-connection?

IP switch

PCle switch

FC switch

WAN switch

67. What advantages does the Huawei 2000 V3 offer to get the most out of fixed investments lower prices motivate customers to buy our products, and achieve project success?

Among 32 GB products, the OceanStor 2200 V3 supports the leading gateway-free converged active-active solution for SAN/NA

Among 32 and 64 GB products, the OceanStor 2200 and 2600 offer commercial advantages.

Among 32 and 64 GB products, the OceanStor 2200 and 2600 offer the most-comprehensive functions.

Among 64 GB products, the OceanStor 2600 V3 supports the leading gateway-free converged active-active solution for SAN/NA

68. 4-in-1 means that 4 protocols are integrated into 1 OceanStor 100D storage system for unified management.

Which 4 protocols are involved?

Block

HDFS

File

Object

NDMP

69. What are vertical industries that require OceanStor distributed storage?

Enterprise

Carrier

Finance

Security

Government

70. What are the major differences between distributed storage and centralized storage?

The distributed architecture facilitates capacity expansion and reduction and eliminates data migration.

Distributed storage is applicable to cloud storage resource pools. content repository, archiving. and big data storage.

Distributed storage features high elasticity and scalability accelerating service rollout.

Distributed storage uses general-purpose servers as storage hardware for unified management

Page 8 of 8

71. What are the front-end protocols of OceanStor Dorado V6?

16G FC

40G Ethernet

32G FC

100G Ethernet

72. Which features and technologies ensure Ever Solid Dorado V6?

Cloud-level reliability: Gateway-free backup to the cloud

System-level reliability: The SmartMatrix fully-connected active-active architecture tolerates seven out of eight controllers to fail and one out of two controller enclosures to fail without interrupting services.

Data center-level reliability: HyperMetro-based gateway-free active-active and geo-redundant 3DC DR solutions

Disk-level reliability: Self-developed SSDs use wear and anti-wear leveling technologies to control the mean time between failures (MTBF)of SSDs in a more predictable manner.

73. Which are the advantages of Dorado Vo smart disk enclosures?

Improving storage performance

Accelerating data reconstruction

Reducing the impact of data reconstruction on services

Reducing energy consumption

74. Which levels are included in the reliability delivered by Dorado V6?

System level (for example, RAID TP supports simultaneous failure of three disks)

Solution level (for example, the Ever New Device Service and gateway-free HyperMetro)

Cloud level (for example, gateway-free backup to the cloud)

Architecture level (for example, the SmartMatrix achitecture can tolerate the failure of seven out of eight controllers and one out of two controller enclosures)

Disk level (for example, the Huawei-patented anti-wear leveling algorithm)

75. What enable Dorado V6 to deliver such high performance?

Smart disk enclosure collaboration algorithm

Five Huawei-developed chips

Higher performance provided by HDDs

End-to-end NVMe protocol

76. Which of the following are NOT true about OceanStor Dorado V6?

Tolerance for failures of 7 out of 8 controllers for every model

NVMe available for every model.

Up to 20 million IOPS

As low as 1 ms latency

77. Which features and technologies ensure Al-powered Dorado V6?

The industry's first storage Al chip can improve the cache hit ratio and implement data prefetch and pre-cache.

FlashEver ensures zero data migration across three generations in 10 years.

The Industry's first storage Al chip that predicts and warns 0&M problems in advance

Five chips are interconnected and collaborate with each other.

78. Which vendors provide NAS active-active solutions?

Huawei

HDS

Dell

EMC

NetApp

HPE

79. Which product models can tolerate the failure of three out of four controllers?

OceanStor 6800 V5 Kunpeng

OceanStor 5600 V5 Kunpeng

OceanStor 18000 v5 Kunpeng

OceanStor 5800 vs Kunpeng

80. Which of the following features are supported by SmartThin LUNs?

SmartQuota

SmartCompression

SmartErase

SmartDedupe

2021 Huawei H19-308-ENU Free Practice Test

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