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Huawei Certified ICT Professional-Constructing Cloud Storage Solution Questions and Answers

Question 1

Which command is used to check whether the file system is in the online state for N8500 V200R001?

Options:

A.

storage fs list

B.

storage fs online

C.

storage fs status

D.

storage fs status show

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Question 2

Compared with a relational database, which of the following are advantages of NoSQL? (Select three)

Options:

A.

Flexible scalability

B.

High availability

C.

High cost-effectiveness

D.

Feature richness

Question 3

Which of the following statements about the file system planning of the N8500 clustered NAS storage systems are correct? (Select two)

Options:

A.

Afile system has at most 10 million files.

B.

A directory has at most 10,000 files.

C.

A file system has at most 10 levels of directories.

D.

A file system has at most 10,000 directories.

Question 4

An N8500 clustered NAS system is equipped with four engine nodes and each engine node provides four service network ports. How many virtual IP addresses must be planned for the N8500?

Options:

A.

15

B.

16

C.

17

D.

18

Question 5

In performance optimization of the N8500 clustered NAS storage systems, which of the following issues must the maintenance personnel be aware of concerning LUNs and controllers? (Select three.)

Options:

A.

Create only one LUN for each RAID group.

B.

Set LUNs to forcible write back without mirroring.

C.

Ensure that the owning controller and the working controller of a LUN are the same.

D.

Disks that compose a file system are evenly distributed on controllers.

Question 6

Which command is used to monitor the CPU usage in performance optimization of the N8500 clustered NAS storage systems?

Options:

A.

sar -u 3 3

B.

sar -r 3 3

C.

sar -n DEV 2 2

D.

sar -n CPU 2 2

Question 7

A customer's OceanStor 9000 big data storage system uses GE for the front-end network and 10GE for the back-end network. If the OceanStor 9000 is configured with four C nodes, only a basic cabinet is required.

Options:

A.

True

B.

False

Question 8

Which of the following statements about the application scenarios of different nodes of the HUAWEI OceanStor 9000 big data storage systems is correct?

Options:

A.

The mini-capacity node applies to small-capacity scenarios.

B.

The performance node applies to large-capacity and high-bandwidth scenarios.

C.

The capacity node applies to OPS-intensive scenarios.

D.

None of the above is correct.

Question 9

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

Options:

A.

Integrity

B.

Confidentiality

C.

Availability

D.

Continuity

Question 10

Which of the following are characteristics of big data? (Select three)

Options:

A.

Huge data volume

B.

Authentic and valid data

C.

Fast data circulation

D.

Various data types

Question 11

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?

Options:

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 twoports.

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 addressfor 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.

Question 12

Compared with traditional RAID algorithms, the Erasure Code redundancy technology provides higher reliability and more flexible redundancy policies. Which of the following statements about Erasure Code is incorrect?

Options:

A.

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

B.

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

C.

M+N data blocks are concurrently stored to different nodes.

D.

In Erasure Code storage mode, aconcurrent failure of N-l disks is tolerated.

Question 13

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.

Options:

A.

True

B.

False

Question 14

When a NAS client attempts to connect to an OceanStor 9000 node, the user must enter the management IP address of the node.

Options:

A.

True

B.

False

Question 15

If the InfoLink license is not activated in an OceanStor 9000 storage system, the system cannot balance loads coming from clients.

Options:

A.

True

B.

False

Question 16

In the cluster communication architecture employed by an N8500 clustered NAS system, modules such as the resource agent, HAD, GAB, and Low Latency Transport (LLT) must collaborate to implement cluster communication. Which of the following statements about the work mechanisms of these modules are correct? (Select three)

Options:

A.

The agent monitors the resources of each system and provides the status information for the HAD of each machine.

B.

If a cluster node is abnormal or faulty, the HAD takes correct actions, for example, performing a failover.

C.

The GAB implements a point-to-point communication mechanism. The master node sends the other cluster nodes the information that needs to be synchronized.

D.

LLT is a MAC-layer protocol unrelated to IP layer.

Question 17

Which of the following storage services can the N8500 clustered NAS system that employs the integrated networking mode provide for application servers? (Select three.)

Options:

A.

CIFS

B.

10 Gbit/s iSCSI SAN

C.

SASSAN

D.

FCSAN

Question 18

Which of the following does not demonstrate the characteristics of big data?

Options:

A.

Analysis of the popularity of China railway lines during the Spring Festival travel rush in

B.

Analysis and forecast of global influenza with the use of search engines

C.

Analysis of final exam scores of a university student

D.

Data recording and analysis of a Chinese moon landing project

Question 19

When configuring an N8500 clustered NAS engine, a user must specify the start and end physical IP addresses and the start and end virtual IP addresses.

Options:

A.

True

B.

False

Question 20

Which of the following components comprise the Storage Foundation of an N8500 clustered NASsystem? (Select two)

Options:

A.

VxVM

B.

VCS

C.

VxFS

D.

SFS

Question 21

Which of the following network file sharing protocols are supported by a NAS storage system? (Select two.)

Options:

A.

FAT32

B.

NTFS

C.

NFS

D.

CIFS

Question 22

In an OceanStor 9000 storage system, the management IP address is 100.16.100.3, the front-end service network segment is from 192.168.100.1 to 192.168.100.20, the dir00l directory is shared, and the share path is /dir00l. Which of the following statements about the share access are correct? (Select two)

Options:

A.

The clients that attempt to access the share must interwork withIP address 100.16.100.3.

B.

The clients that attempt to access the share must interwork with any IP address in the network segment from 192.168.100.1 to 192.168.100.20.

C.

If the client runs the 5U5E operating system, use the mount -t nfs ipaddress:\dir001 \mnt command to mount the share.

D.

If the client runs the SUSE operating system, use the mount -t nfs ipaddress:/dir001 /mnt command to mount the share.

Question 23

In an OceanStor 9000 storage system, the calculate quota is set to 50 GB for user A to access the /dir directory. When the amount of data that user A writes exceeds 50 GB in the /dir directory, the system allows user A to continue to write data in the /dir directory.

Options:

A.

True

B.

False

Question 24

If an OceanStor 9000 storage system consists of three P nodes and uses GE for the front-end network, how many IP addresses must be planned for the front-end service network segment?

Options:

A.

17

B.

18

C.

19

D.

20

Question 25

A NAS storage system is dedicated to storing and managing which of the following data types?

Options:

A.

Block data

B.

File data

C.

Object data

D.

Consecutive data blocks

Question 26

In an N8500 clustered NAS system, which of the following commands are commonly used to query a cluster's detailed resource information? (Selecttwo.)

Options:

A.

hares -state

B.

hares -display

C.

hagrp -dep

D.

hagrp -state

Question 27

The CIFS sharing of the OceanStor 9000 supports local user authentication and AD domain user authentication.

Options:

A.

True

B.

False

Question 28

Which of the following statements about the simple file system of the N8500 clustered NAS storage systems is incorrect?

Options:

A.

Data of asimple file system is stored in sequence on the data disks where the file system resides.

B.

A simple file system reads and writes multiple subdisks simultaneously, providing higher performance than reading and writing a single disk.

C.

The volume of a simple file system is formed by the subdisks of multiple data disks.

D.

The simple file system is applicable to scenarios having no special performance or security requirements.

Question 29

The master account is used to enter the CLI mode of N8500 V200R001. Which of the following operations can be performed related to NFS? (Select three.)

Options:

A.

nfs server show

B.

nfs server status

C.

nfs server start

D.

nfsserver stop

Question 30

If an application server cannot access the storage resources of an N8500 storage system, which of the following operations can be performed for troubleshooting? (Select three.)

Options:

A.

Log in to the ISM to check alarms.

B.

Check the indicators on the storage system.

C.

Reinstall the ISM software.

D.

Restart the sharing service.

Question 31

Which of the following options describes the Huawei OceanStor 9000 product features incorrectly?

Options:

A.

The Oceanstor 9000 uses a fully symmetric logic architecture and business load balancing design to significantly increase system concurrent access capabilities.

B.

The Oceanstor 9000 uses a global cache, so the data is kept in the cache.

C.

Oceanstor 9000 does not support access to Oceanstor DeviceManager through HTTPS.

D.

Oceanstor 9000 can smoothly expand capacity, capacity and performance support linear expansion

Question 32

Multi-selection) The OceanStor 9000 uses Erasure code technology to protect data. If a site has 6 nodes, and the customer wants to

In the case where one strip breaks three discs, the data can still be recovered. The redundancy levels that can be used are:

Options:

A.

4+3:1

B.

6+3

C.

4+2

D.

12+3:1

Question 33

Which of the following is wrong with the description of WushanSQL?

Options:

A.

Wushan SQL shares CPU, memory, storage and other system resources among each other.

B.

In Wushan SQL, the business data is scattered on multiple physical nodes, and the data analysis task is pushed to the node where the data is located.

C.

Wushan SQL needs to coordinate through the control module to complete large-scale data processing work.

D.

All business data in Wushan SQL is stored redundantly in different storage nodes.

Question 34

InfiniBand can be applied to communication between servers and servers, servers and storage devices, and servers and networks.

Options:

A.

TRUE

B.

FALSE

Question 35

Which of the following is not in the Huawei OceanStor 9000?

Options:

A.

NIS authentication

B.

LDAP authentication

C.

Client IP address

D.

Local user authentication

Question 36

The Huawei OceanStor 9000 InfoTier file pool policy will determine the storage location of the file creation and the target grading when the file is re-striped.

Which one is incorrect about the file pool strategy?

Options:

A.

default policy has the lowest priority

B.

default policy can be modified

C.

Relationship between policy parameter combinations is OR

D.

Support up to 128 file pool policies

Question 37

Huawei N8000 (V200R001) clustered between two nodes of the NAS, how many redundancy is between the heartbeat links?

Options:

A.

1

B.

2

C.

3

D.

4

Question 38

In the scenario where the client has high requirements for file read and write performance, such as the high-performance computing application scenario, the back end of the Oceanstor 9000 has adopted the 10GE group.

Network, what kind of network type should the front-end business network recommend to customers? (multiple choice)

Options:

A.

10GE networking

B.

IB network

C.

GE networking

D.

FC networking

Question 39

The Oceanstor 9000 uses Erasure code technology to protect data. If a node has 7 nodes, and the customer wants disk utilization to

Less than 70%, the redundancy levels that can be used are: (multiple choice)

Options:

A.

6+1

B.

4+2

C.

6+4

D.

12+2:1

Question 40

Which of the following types of data is stored and managed by the NAS system?

Options:

A.

Bulk data

B.

Document data

C.

Small message

D.

Continuous data blocks

Question 41

Which automatic load balancing method is supported by Huawei OceanStor 9000InfoEqualrser by default?

Options:

A.

Number of connections by node

B.

Round robin

C.

By node throughput

D.

Integrated load by node

Question 42

In the era of big data, you should also have big data thinking. Which of the following statements is incorrect?

Options:

A.

In the era of big data, the processing and analysis of data no longer depends on randomly sampled samples.

B.

In the era of big data, you should be keen on the accuracy of data.

C.

In the era of big data, the analysis of big data processing is more inclined to predict what will happen.

Question 43

Which of the following is incorrect about the unpacking inspection?

Options:

A.

If there is wrong goods or out of stock when unpacking and inspecting the goods, please fill in the “Cargo Error Feedback Form” and give feedback to the local office.

B.

When the goods are inspected and inspected, the project supervisor can open the goods separately.

C.

If the goods appear to be inconsistent with the packing list, the equipment of the unpacked box should be transferred to the room for proper storage.

Question 44

Which of the following is incorrect about the description of the global cache of the OceanStor 9000?

Options:

A.

The memory space on all storage servers logically constitutes a unified memory resource pool

B.

Data cached on any storage server, which can be used when any subsequent storage server receives a request to access the data.

Hit in the cache

C.

All user data will only be cached in the entire cluster system.

D.

The cache and its checksum data will be cached in the global cache.

Question 45

Which of the following is incorrect about the Oceanstor 9000 InfoStamper feature description?

Options:

A.

Oceanstor 9000 metadata is mirrored for redundancy and COW technology for metadata

B.

InfoStamper feature provides file-level-based snapshots

C.

Oceanstor 9000 InfoStamper uses ROW technology

D.

The advantage of using ROW is that it has less impact on system performance.

Question 46

The following is true about the Huawei Oceanstor 9000 product system description? (multiple choice)

Options:

A.

The MDS service is responsible for managing the metadata of the file system.

B.

The DS service is responsible for storing the file data of the system, but is not responsible for the storage of metadata.

C.

The CMS service is responsible for device management of the physical nodes of the cluster.

D.

Some nodes in the system are responsible for providing MDS services, and some nodes are responsible for providing DS services.

Question 47

A customer uses Huawei OceanStor 9000 to store its massive files. In order to facilitate multi-department sharing, a dedicated directory is created for each department.

After running for a while, storage resources become tense, and the reason is that some departments overuse the storage space on the Oceanstor 9000.

Huawei question bank battle report group: 39245961, so the customer can limit the use of space by setting quotas in the directories of these departments to ensure that other departments can use normally.

Oceanstor 9000 storage resources

Options:

A.

TRUE

B.

FALSE

Question 48

The N8000 provides fencing to prevent brain splitting. Which of the following is incorrectly described for fencing?

Options:

A.

Monitor GAB and check for changes in cluster members

B.

Guarantee a single view of the cluster members

C.

Prevent multiple nodes from accessing shared storage with the volume manager without a single cluster control

D.

Automatically restore the master node after an abnormality occurs in the cluster

Question 49

Which of the following is incorrect for the description of the Huawei OceanStor 9000 product?

Options:

A.

Oceanstor 9000 uses a non-fully symmetric architecture

B.

Oceanstor 9000 provides flexible seamless expansion of 3-288 nodes

C.

The Oceanstor 9000 system adopts a fully interconnected and fully redundant networking mode.

D.

Oceanstor 9000 adopts distributed cluster architecture with no single point of failure.

Question 50

The authentication methods supported by Huawei OceanStor 9000CIFS share include: (multiple choice)

Options:

A.

Local user authentication

B.

AD domain user authentication

C.

NIS domain authentication

D.

LDAP authentication

Question 51

The Erasure code redundancy technology used by the OceanStor 9000 supports higher reliability and more flexible redundancy strategies than traditional RAID algorithms.

Which of the following is the description of the principle of Erasure code N+M?

Options:

A.

When data is written, it is cut into N data blocks with the same size.

B.

Each of the N consecutive data blocks calculates M check blocks (M

C.

The system stores N+M data blocks in parallel on different hard disks.

D.

In Erasure Code storage mode, the system supports up to N hard disk failures.

Question 52

(Judgment) Huawei OceanStor 9000 has no impact on device management, whether it is an online upgrade or an offline upgrade.

Options:

A.

T

B.

F

Question 53

Single-choice) Which of the following is the correct sequence for powering up the Huawei OceanStor 9000 Big Data Storage System?

Options:

A.

Cabinet-->Switch-->KVM--->Node

B.

Cabinet --> KVM --> Switch ---> Node

C.

Cabinet --> Switch --> Node ---> KVM

D.

Cabinet --> Node --> KVM ---> Switch

Question 54

The minimum number of nodes in the Huawei OceanStor 9000 system is 3, and these 3 nodes can be of different types.

Options:

A.

TRUE

B.

FALSE

Question 55

Huawei OceanStor 9000 provides a single file system and a unified file system namespace. The following information about the OceanStor 9000 system

Which one is incorrectly described in a namespace?

Options:

A.

The namespace is automatically created when the OceanStor 9000 starts, and its name is consistent with the system name.

B.

The namespace is the root of the entire system and cannot be shared and accessed. Only the subdirectories below it can be shared and accessed.

C.

A unified namespace provides users with a unified storage resource pool to achieve centralized management and allocation of storage space.

D.

Each file share directory is a subdirectory of the namespace

Question 56

Huawei OceanStor 9000 storage system uses layered security maintenance. Which one is not the application layer security content?

Options:

A.

Password system

B.

Authorization and authentication mechanisms

C.

Use SSH/SFTP to circumvent unsecured network traffic

D.

Activity record

Question 57

What is wrong with the description of Huawei OceanStor 9000 software module?

Options:

A.

OBS (Object-Based Store) provides reliable object storage for file system metadata and file data

B.

CA (Chent Agent) is responsible for semantic analysis of application protocols such as NFS/CIFS/FTP and sends it to the underlying module for processing.

C.

Snapshots, tiered storage, remote replication and many other value-added features are provided by the PVS module.

D.

MDS (MetaData Service) manages the metadata of the file system, and each node of the system stores the metadata.

Question 58

Which of the following options is correct about the switches used by the Huawei OceanStor 9000 system?

Options:

A.

Switches used with the OceanStor 9000 storage system configuration include the CE6810, S5752/S5352, and IS5023.

B.

IS5023 switch provides IB access

C.

The S5700/S5352C switch provides GE access.

D.

The CE6810 switch provides 10GE/GE access.

Question 59

When a user analyzes its production device Oceanstor 9000 with Systemreporter, it finds that the CPU utilization of some nodes of a certain partition exceeds 80%, but

The average CPU utilization is about 50%. In addition, the read and write bandwidth of a node is always maintained at 80% or more of the performance specification.

Below 60%, in this scenario, which of the following load balancing strategies is recommended?

Options:

A.

Round robin mode

B.

By CPU utilization

C.

By node throughput

D.

Comprehensive results by node

Question 60

The following statement about the Oceanstor 9000 Smart Load Balancing is correct: (multiple choice)

Options:

A.

Automatic load balancing between all nodes

B.

Automatically balance capacity and performance

C.

No manual intervention required

D.

Transparent to the application

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Total 405 questions