EMT Practice Test

1. Question Content...

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Question1: 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)

Question2: In N8500 clustered NAS system V200R001, how many redundant heartbeat links are set up between two nodes?

Question3: The OceanStor 9000 can be installed in a Huavvei-supplied cabinet only,

Question4: An N8500 clustered NAS system is equipped with six engine nodes and four S5500T storage arrays. Each engine node provides eight service network ports. How many IP addresses must be configured for the N8500?

Question5: Which of the following service ports are provided by an N8500 clustered NAS system? (Select two.)

Question6: 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.

Question7: There are four types of ports on the N8500 clustered NAS engine nodes: heartbeat port, management port, service port, and storage port. Which of the following statements about the port types in the figure are correct? (Select two.)

Question8: The OceanStor 9000 WushanFS supports online node expansion. The storage capacity and computing capability are increased linearly, providing linearly increasing throughput and concurrency capabilities for users.

Question9: Which of the following statements about the file system used by the OceanStor 9000 is incorrect?

Question10: 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)

Question11: When a NAS client attempts to connect to an OceanStor 9000 node, the user must enter the management IP address of the node.

Question12: 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.

Question13: If the internal link is faulty in an N8500 clustered NAS storage system, which of the following items can be skipped during troubleshooting?

Question14: You are required to check the installation environment before installing software on an OceanStor 9000 storage system. Which of the following conditions does not meet these requirements?

Question15: 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.)

Question16: 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?

Question17: In an OceanStor 9000 storage system, hard quotas are set for user A to access the /dir directory. The recommended threshold is 3 GB, the soft threshold is 4 GB, the grace period is 10 days, and the hard threshold is 6 GB. If user A has written 3.1 GB data in the /dir directory, which of the following statements are correct? (Select two.)

Question18: 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)

Question19: An application requires high write performance and moderate reliability. To ensure that the N8500 clustered NAS storage system delivers the optimal write performance, set the LUN write policy to write back with mirroring.

Question20: A NAS storage system is dedicated to storing and managing which of the following data types?

Question21: An N8500 clustered NAS engine can be connected to a SAN storage array over a Fibre Channel network and a SAS network concurrently.

Question22: The HUAWEI OceanStor 9000 can be managed using web browsers. If an OceanStor 9000 storage system uses default settings, which of the following entered in the browser address box is correct?

Question23: Which of the following statements about the InfoTier feature of the OceanStor 9000 are correct? (Select two)

Question24: The HUAWEI OceanStor Toolkit V100R001 is used for preventive maintenance. The preventive maintenance wizard does not include which of the following?

Question25: 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?

Question26: 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?

Question27: Which components of an N8500 clustered NAS system reside in the user space? (Select two)

Question28: Which of the following statements about the characteristics of the file system snapshot feature provided by an N8500 clustered NAS system are incorrect? (Select two.)

Question29: An N8500 clustered NAS engine does not need to be equipped with power modules.

Question30: An N8500 provides synchronous volume mirroring, which is similar to implementation of RAID 1 for the file system.

Question31: The OceanStor 9000 can be installed in a Huawei-supplied cabinet only.

Question32: The networking of an HUAWEI OceanStor 9000 big data storage system includes which of the following?
(Select three)

Question33: The hardware faults of an engine node in an N8500 storage system do not include which of the following?

Question34: It is recommended that the OceanStor 9000 use 10GE for both the front-end and back-end networks.

Question35: Which command is used to monitor the CPU usage in performance optimization of the N8500 clustered NAS storage systems?

Question36: 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.

Question37: The license must be purchased for which of the following software features of the OceanStor 9000?
(Select three.)

Question38: 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?

Question39: Object storage encryption ensures data security based on the following levels: track check, slice check, object check, and packet check.

Question40: Which of the following statements about the indicators on an N8500 clustered NAS system are correct?
(Select two.)

Question41: 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.

Question42: 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?

Question43: In an N8500 clustered NAS system, at most how many 1 Gbit/s service ports can a single clustered NAS engine node provide?

Question44: If the InfoLink license is not activated in an OceanStor 9000 storage system, the system cannot balance loads coming from clients.

Question45: 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.

Question46: In an N8500 clustered NAS system, the engine enclosures exchange cluster control information over a Fibre Channel heartbeat network.

Question47: Which of the following are considered when planning the deployment of an N8000 clustered NAS storage system? (Select three.)

Question48: Which of the following are necessary components of the NAS storage system architecture? (Select three.)

Question49: In a NetBackup-based N8500 file system backup network, all the nodes of the N8500 must be connected to both the NetBackup master server and media servers.

Question50: 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?

Question51: Which of the following statements about the login information of the OceanStor 9000 after its software installation is complete are incorrect?

Question52: The CIFS sharing of the OceanStor 9000 supports local user authentication and AD domain user authentication.

Question53: Which of the following are possible challenges facing massive data management? (Select two.)

Question54: 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)

Question55: Which of the following statements about the Global Cache technology employed by the WushanFS are correct? (Select three.)

Question56: 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.

Question57: Which of the following components comprise the Storage Foundation of an N8500 clustered NASsystem?
(Select two)

Question58: Which of the following statements about the VCS services and resources provided by a clustered NAS system are correct? (Select three.)

Question59: Typically, how many storage units can be configured for a 4-node N8500 to implement direct- connection networking?

Question60: Which of the following are included in Hadoop? (Select three)

Question61: The OceanStor 9000 externally provides a single file system that is managed by a unified file system namespace. All the objects involved in user operations such as storing files, setting a share, and managing permission reside in this namespace. Which of the following statements about a namespace are correct?
(Select three.)

Question62: The InfoLink function is enabled on an OceanStor 9000 storage system. If the node to which a client connects becomes faulty and a failover occurs, which of the following statements is incorrect?

Question63: Which of the following interface cards can be installed in the PCIe expansion slot on the P node of the OceanStor 9000? (Select three)

Question64: 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)

Question65: 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?

Question66: If an OceanStor 9000 storage system consists of four M nodes and uses 10GE for the back-end network, how many IP addresses must be planned for the back-end storage network segment?

Question67: Which of the following statements about the file system mirroring feature provided by an N8500 clustered NAS system are incorrect? (Select two)

Question68: 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)

Question69: Compared with a relational database, which of the following are advantages of NoSQL? (Select three)

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

Question71: Which of the following statements about the DST feature of an N8500 clustered NAS system are incorrect? (Select three)

Question72: Which of the following disks are used by an N8500 clustered NAS engine as system disks?

Question73: Which of the following issues are resolved by big data storage security technology? (Select three)

Question74: Which of the following statements about the InfoLink feature of the OceanStor 9000 are correct? (Select two.)

Question75: When planning IP addresses for the back-end storage network of the OceanStor 9000 which uses IB networking, you must plan two back-end storage IP addresses and one temporary IP address for each node.

Question76: Which of the following statements about reading and writing an N8500 clustered NAS file system mirror and the best practices are correct? (Select three)

Question77: 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.)

Question78: 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)

Question79: If the application scenario of an N8500 clustered NAS system is Mac OS, the OS can access shared files on the N8500 through NFS.

Question80: 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.

Question81: InfiniBand is used for communication between servers, between a server and a storage device, and between a server and a network.

Question82: 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.

Question83: Which of the following statements about the OceanStor Toolkit installation of the OceanStor 9000 is incorrect?

Question84: Which of the following statements about N8500 troubleshooting is incorrect?

Question85: Which are the key parameters used to evaluate the performance of an N8500 clustered NAS storage system? (Select three.)

Question86: Which of the following storage units are used by an N8500 clustered NAS system? (Select three)

Question87: The following figure shows the ports of two CE6850 switches when the OceanStor 9000 uses GE for the front-end network and 10GE for the back-end network. If the OceanStor 9000 uses C nodes, the ports in which area of the CE6850 switch must ports AO-0 and A0-1 on all the C nodes be connected to?

Question88: Which of the following statements about the 10 Gigabit Ethernet (10GE) is incorrect?

Question89: The HUAWEI OceanStor Toolkit V100R001 is used for information collection. When importing a service package, you can find the service package in the datacollect folder under toolcases.

Question90: Which of the following statements about different service applications' storage performance and capacity requirements are correct?

Question91: 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)

Question92: 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.

Question93: 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?

Question94: If an engine node of an N8500 storage system cannot be started, which of the following measures is incorrect?

Question95: Which are the characteristics of the OceanStor 9000 M node? (Select two.)

Question96: 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)

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 statements about the system services of the OceanStor 9000 are correct? (Select two)

Question99: You can check VCS cluster logs by viewing the Engine_A.log file in the /var/VRTSvcs/log directory on an N8500 storage system.

Question100: An N8500 clustered NAS storage system cannot be logged in to using the master account. Which is the possible cause?

Question101: 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?

Question102: Which of the following statements about the high availability daemon (HAD) function of an N8500 clustered NAS system are correct? (Select three.)

Question103: Which of the following statements about the LUN planning of the N8500 clustered NAS storage systems are correct? (Select three)

Question104: An N8500 clustered NAS system has many services that help implement system functions, such as NFS and CIFS basic service groups. Which of the following is not a resource agent of the NFS service group?

Question105: Which of the following does not demonstrate the characteristics of big data?

Question106: The figure shows the rear view of a P node in an OceanStor 9000. When its front-end is a 10GE network and its back-end is an IB network, NICs 0 on all nodes in the basic cabinet must be connected to the GE switches in the same cabinet.

Question107: Which are the possible causes for file read/write performance decrease? (Select three)

Question108: Which of the following is the correct N8500 configuration procedure?

Question109: Which of the following network file sharing protocols are supported by a NAS storage system? (Select two.)