EMT Practice Test

1. Question Content...

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Question1: Which of the following does not demonstrate the characteristics of big data?

Question2: The OceanStor 9000 allows users to define file pool polices based on file attributes and I/O frequency.
Which of the following statements about file pool polices are correct? (Select three.)

Question3: 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?

Question4: Which of the following are characteristics of big data? (Select three)

Question5: When using the OceanStor Toolkit to deploy an OceanStor 9000 storage system, the IP addresses specified in IP address segment in the Configure DHCP area can only be use for the deployment. After the deployment is successful, the IP addresses of each node are changed to those as planned in the configuration file.

Question6: Which of the following statements about IP address planning for the N8500 clustered HAS storage systems is incorrect?

Question7: In Linux, the iostat command is run and the following output is displayed:
# iostat
Linux 2.6.9-8.11.EVAL (ts3-150,ts.cn.tlan)02/01/2014 avg-cpu: %user%nice%sys %iowait%idle
12.010.002.152.3083,54
Device: tpsBlk_read/sBlk_wrtn/sBlk_readBlk_wrtn
hda7.13200.1234.73640119111076
Which of the following statements are correct? (Select two.)

Question8: Which of the following statements about the file system mirroring feature provided by an N8500 clustered NAS system are incorrect? (Select two)

Question9: The OceanStor 9000 can be installed in a Huawei-supplied cabinet only.

Question10: Which of the following interface cards can be installed in the PCIe expansion slot on the P node of the OceanStor 9000? (Select three)

Question11: The hardware faults of an engine node in an N8500 storage system do not include which of the following?

Question12: The figure shows the file pool policy configured for an OceanStor 9000 storage system. The monitoring and migration time is 2: 00-4: 00 a.m. every day. At 9: 00 a.m. on Monday, file A was created in the
\example\test directory. By 10: 00 a.m., file A had been read and written for 15 times and the file size became 150 MB. After that, file A was no longer accessed. At 9: 00 a.m. on Tuesday, in which tier is file A stored?

Question13: The stripe file system data of an N8500 clustered NAS storage system is stored on multiple data disks in the same way as data in RAID 0. The stripe file system provides high read/write performance but low security.

Question14: 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?

Question15: The license must be purchased for which of the following software features of the OceanStor 9000?
(Select three.)

Question16: Which of the following statements about the high availability daemon (HAD) function of an N8500 clustered NAS system are correct? (Select three.)

Question17: 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.)

Question18: The OceanStor 9000 in the figure adopts GE networking and enables the InfoLink function for front-end services. How many IP address should be planned for the front-end service network?

Question19: The fencing function provided by an N8500 prevents split-brain from occurring. Which of the following statements about fencing are correct? (Select three)

Question20: When planning RAID for an N8500 clustered NAS storage system, you are advised to configure RAID 10 for database services and random read/write services.

Question21: If the application scenario of an N8500 clustered NAS system is Mac OS, the OS can access shared files on the N8500 through NFS.

Question22: Which of the following statements about the performance optimization check items of the N8500 clustered NAS storage systems are correct? (Select three)

Question23: If the name of a shared directory is dirtest in an OceanStor 9000 storage system, local users who have permission can access the directory by entering \\*.*.*.*\dirtest, where *,*.*,* must be the front-end service IP address of the node that provides storage space for the dirtest directory.

Question24: 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)

Question25: If the InfoLink license is not activated in an OceanStor 9000 storage system, the system cannot balance loads coming from clients.

Question26: If the file system sharing services are interrupted on an N8500 storage system, which of the following information must be collected for troubleshooting? (Select three)

Question27: Which of the following statements about different service applications' storage performance and capacity requirements are correct?

Question28: Which of the following storage services can the N8500 clustered NAS system that employs the integrated networking mode provide for application servers? (Select three.)

Question29: 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?

Question30: A NAS storage system supports file system sharing, and the underlying protocol transmits data based on iSCSI.

Question31: Typically, how many storage units can be configured for a 4-node N8500 to implement direct- connection networking?

Question32: Which of the following statements about the software features of the OceanStor 9000 are correct? (Select two)

Question33: Which of the following statements about the OceanStor Toolkit installation of the OceanStor 9000 is incorrect?

Question34: Which of the following statements about the LUN planning of the N8500 clustered NAS storage systems are correct? (Select three)

Question35: In the OceanStor 9000, a node pool is a collection of nodes that have the same characteristics such as physical type and access performance, and DST allows a user to divide physical nodes in the same file system into node pools.

Question36: You can check VCS cluster logs by viewing the Engine_A.log file in the /var/VRTSvcs/log directory on an N8500 storage system.

Question37: Which of the following statements about the application scenarios of different nodes of the HUAWEI OceanStor 9000 big data storage systems is correct?

Question38: 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?

Question39: Which of the following types of clients are supported by NFS sharing of the OceanStor 9000? (Select three)

Question40: Compared with a relational database, which of the following are advantages of NoSQL? (Select three)

Question41: Which of the following are included in Hadoop? (Select three)

Question42: 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?

Question43: Which of the following device indicator states will not appear after an OceanStor storage system powers up and operates properly?

Question44: If an engine node of an N8500 storage system cannot be started, which of the following measures is incorrect?

Question45: 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?

Question46: Which of the following are considered when planning the deployment of an N8000 clustered NAS storage system? (Select three.)

Question47: Which of the following network file sharing protocols are supported by a NAS storage system? (Select two.)

Question48: Object storage encryption ensures data security based on the following levels: track check, slice check, object check, and packet check.

Question49: Which of the following statements about the InfoTier feature of the OceanStor 9000 are correct? (Select two)

Question50: Which of the following disks are used by an N8500 clustered NAS engine as system disks?

Question51: In N8500 clustered NAS system V200R001, how many redundant heartbeat links are set up between two nodes?

Question52: Which of the following is the correct N8500 configuration procedure?

Question53: 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.

Question54: 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.

Question55: Which of the following is an unstructured data application?

Question56: Which of the following statements about the 10 Gigabit Ethernet (10GE) is incorrect?

Question57: Which of the following statements about the DST feature of an N8500 clustered NAS system are incorrect?
(Select three)

Question58: Which of the following statements about the CIFS share are correct? (Select two)

Question59: On Huawei N8500 V200R001, gabconfig -a can be executed to query the port communication status of a GAB member in a cluster. Port h gen is the communication port of which member?

Question60: Which of the following issues are resolved by big data storage security technology? (Select three)

Question61: Which of the following must be considered before you optimize the performance of an N8500 clustered NAS storage system? (Select three)

Question62: 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.

Question63: For one or more Windows clients to access the storage resources on an OceanStor 9000 storage system, the administrator needs to create a directory under the root directory on the specified storage node and authorize the new directory to the target user or user group.

Question64: In an N8500 clustered NAS system, which of the following commands are commonly used to query a cluster's detailed resource information? (Select two.)

Question65: Which of the following statements about the file system used by the OceanStor 9000 is incorrect?

Question66: If the back-end storage performance of an N8500 storage system deteriorates, which of the following items can be skipped during troubleshooting?

Question67: 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?

Question68: Which of the following statements about NewSQL databases are correct? (Select three)

Question69: Which of the following statements about the software installation of the OceanStor 9000 are correct?
(Select two.)

Question70: Which of the following can be used to manage secure access to NFS shares? (Select two.)

Question71: An OceanStor 9000 storage system is deployed using the OceanStor Toolkit. Which of the following statements about the settings of the OceanStor Toolkit configuration file are correct? (Select two)

Question72: An N8500 provides synchronous volume mirroring, which is similar to implementation of RAID 1 for the file system.

Question73: Which of the following statements about the login information of the OceanStor 9000 after its software installation is complete are incorrect?

Question74: An NS500 clustered NIAS system provides file system sharing. Which of the following statements about the N8500's file system mechanism and related features are correct? (Select three)

Question75: Which are the key parameters used to evaluate the performance of an N8500 clustered NAS storage system? (Select three.)

Question76: Which of the following file system configurations are correct for the N8500 clustered NAS storage systems? (Select two.)

Question77: Which of the following statements about Huawei 9000 big data solutions is incorrect?

Question78: 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.

Question79: A big data processing system involves five layers: data collection, data storage, data processing, data analysis, and data application and presentation. Which of the following statements about the five layers are correct? (Select two)

Question80: The CAP principle that a distributed database complies with involves three elements:
consistency, availability, and partition tolerance. Which of the following statements about the CAP principle that a distributed database complies with are correct? (Select three)

Question81: In an N8500, metadata is classified into many types. Different nodes process different types of metadata.
Metadata is classified into which of the following types? (Select three)

Question82: For N800 V200R001, you can log in to the storage system using the support account and run fsck -t vxfs -o full -y /dev/vx/dsk/sfsdg/fs001 to implement full verification for the fs00l file system.

Question83: Which of the following statements about the principle of the file system snapshot feature provided by an N8500 clustered NAS system are correct? (Select two)

Question84: Which of the following statements about the file system planning of the N8500 clustered NAS storage systems are correct? (Select two)

Question85: An N8500 clustered NAS storage system cannot be logged in to using the master account. Which is the possible cause?

Question86: In the OceanStor 9000, a file pool is a collection of files that have specific characteristics. A file pool policy defines the rules for storing a file pool in a node pool.

Question87: When a NAS client attempts to connect to an OceanStor 9000 node, the user must enter the management IP address of the node.

Question88: Which of the following statements about the N8500 configuration prerequisites are correct? (Select three)

Question89: Which of the following statements about IP address planning for the N8500 clustered NAS storage systems is incorrect?

Question90: Hadoop is an open-source software framework for distributed processing of massive data. Hadoop has performance and cost advantages in terms of unstructured data processing.

Question91: In an N8500 clustered NAS system, the engine enclosures exchange cluster control information over a Fibre Channel heartbeat network.

Question92: Which of the following are the mandatory hardware components of an N8500 clustered NASsystem?
(Select two)

Question93: Which are the possible causes for file read/write performance decrease? (Select three)

Question94: 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)

Question95: NFS is a method of sharing disk files between UNIX operating systems. NFS is also a file system protocol that allows applications on a client to store and obtain data on server disks through a network.

Question96: The 10GE networking of an OceanStor 9000 uses a CE6850-48S4Q-EI switch. Which of the following statements about the switch are correct? (Select two)

Question97: The three mainstream storage forms are as follows: 1)SAN storage that provides block resources;
2)NAS storage that provides file system resources;3) object-based storage (OBS). SAN storage and NAS storage are traditional storage forms. Which of the following statements about the characteristics of the three storage forms are correct? (Select three.)

Question98: Which of the following are possible challenges facing massive data management? (Select two.)

Question99: Which of the following statements about CIFS are correct? (Select two.)

Question100: Which of the following statements about the intelligent load balancing feature of the OceanStor 9000 are correct? (Select three.)

Question101: In an N8500 clustered NAS system, underlying virtualization is implemented by the VxVM component. The virtual objects managed by the VxVM are VM disks, disk groups, subdisks, and plexes. Which of the following statements is incorrect?

Question102: The %util value of back-end disks frequently exceeds 90% after the iostat command is run. This indicates that the bandwidth utilization is high and performance bottlenecks exist.

Question103: An N8500 clustered NAS engine can be connected to a SAN storage array over a Fibre Channel network and a SAS network concurrently.

Question104: 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.

Question105: In an N8500 clustered NAS system, at most how many 1 Gbit/s service ports can a single clustered NAS engine node provide?

Question106: The HUAWEI OceanStor Toolkit V100R001 is used for preventive maintenance. The preventive maintenance wizard does not include which of the following?