EMT Practice Test

1. Question Content...

---

Question1: Which of the following statements about different service applications' storage performance and capacity requirements are correct?

Question2: Which of the following statements about the CIFS share are correct? (Select 2 answers)

Question3: Which of the following statements about the high availability daemon (HAD) function of an N8500 clustered NAS system are correct? (Select 3 answers)

Question4: 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?

Question5: Which of the following statements about the file system used by the OceanStor 9000 is incorrect?

Question6: You can use the HUAWEI OceanStor Toolkit to perform the operations such as preventive maintenance, information collection, and upgrade for the HUAWEI OceanStor 9000.

Question7: A customer has purchased an N8500 clustered NAS storage system configured with SATA and NL-5AS disks. In order to strike a balance between RAID reliability and read/write performance, which of the following configuration plans is recommended?

Question8: You can check VCS cluster logs by viewing the Engine_A.log file in the /var/VRTSvcs/log directory on an N8500 storage system.

Question9: 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?

Question10: Which of the following statements about the application scenarios of different nodes of the HUAWEI OceanStor 9000 big data storage systems is correct?

Question11: A customer has purchased a 4-node N8500 clustered NAS storage system. The enterprise-edition engine nodes have two CPUs, 10GE network ports, and 48 GB cache. The performance of an engine node reaches 700 MB/s. The back-end storage uses the S5600T, which is configured with 80 SAS disks divided into eight 9-disk RAID 5 groups. Each RAID group has one hot spare disk. The performance of each SAS disk in the 9-disk RAID 5 groups is 30 MB/s. According to the preceding information, what is the overall performance of the N8500 without considering other factors?

Question12: An N8500 clustered NAS engine can be connected to a SAN storage array over a Fibre Channel network and a SAS network concurrently.

Question13: 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?

Question14: Which of the following statements about the InfoQuota feature of the OceanStor 9000 are correct? (Select
3 answers)

Question15: Which of the following storage units are used by an N8500 clustered NAS system? (Select 3 answers)

Question16: 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?

Question17: 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.

Question18: 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.

Question19: Which of the following statements about CIFS are correct? (Select 2 answers)

Question20: When configuring file systems for the N8500 clustered NAS storage systems, you are advised to configure a file system size not larger than 32 TB and the size of small-file storage applications not larger than 16 TB to achieve satisfactory reliability and data recovery speed. (The small files here refer to the files with an average size of 1 MB.)

Question21: 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?

Question22: Which of the following issues are resolved by big data storage security technology? (Select 3 answers)

Question23: Which of the following statements about CIFS service parameter settings on an OceanStor 9000 storage system is incorrect?

Question24: 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?

Question25: Which of the following statements about the N8500 configuration prerequisites are correct? (Select 3 answers)

Question26: 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.

Question27: Which command is used to check whether a file system is mounted using the support account for N8500 V200R001?

Question28: 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 2 answers)

Question29: In an N8500 clustered NAS system, at most how many 1 Gbit/s service ports can a single clustered NAS engine node provide?

Question30: Which of the following are included in Hadoop? (Select 3 answers)

Question31: 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.

Question32: The fencing function provided by an N8500 prevents split-brain from occurring. Which of the following statements about fencing are correct? (Select 3 answers)

Question33: A NAS storage system supports file system sharing, and the underlying protocol transmits data based on iSCSI.

Question34: 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?

Question35: 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.

Question36: In an N8500 clustered NAS system, the engine enclosures exchange cluster control information over a Fibre Channel heartbeat network.

Question37: 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.

Question38: 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?

Question39: 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?

Question40: Which of the following statements about the configuration of the file system snapshot feature provided by an N8500 clustered NAS system are incorrect? (Select 2 answers)

Question41: Which of the following statements about the file system mirroring feature provided by an N8500 clustered NAS system are incorrect? (Select 2 answers)

Question42: The CIFS sharing of the OceanStor 9000 supports local user authentication and AD domain user authentication.

Question43: Which of the following must be considered before you optimize the performance of an N8500 clustered NAS storage system? (Select 3 answers)

Question44: Which of the following are considered when planning the deployment of an N8000 clustered NAS storage system? (Select 3 answers)

Question45: Which command is used to monitor the CPU usage in performance optimization of the N8500 clustered NAS storage systems?

Question46: 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,

Question47: Which of the following statements about the VCS services and resources provided by a clustered NAS system are correct? (Select 3 answers)

Question48: 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 3 answers)

Question49: If an engine node of an N8500 storage system cannot be started, which of the following measures is incorrect?

Question50: Which are the possible causes for file read/write performance decrease? (Select 3 answers)

Question51: A NAS storage system is dedicated to storing and managing which of the following data types?

Question52: Which of the following statements about N8500 troubleshooting is incorrect?

Question53: Which of the following statements about the system services of the OceanStor 9000 are correct? (Select 2 answers)

Question54: Compared with a relational database, which of the following are advantages of NoSQL? (Select 3 answers)

Question55: Which of the following disks are used by an N8500 clustered NAS engine as system disks?

Question56: 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.

Question57: Which of the following are possible challenges facing massive data management? (Select 2 answers)

Question58: The flexible space of the OceanStor 9000 is attributed to the scale-out architecture, scalability from 3 to
288 nodes, and support for global namespace.

Question59: Which of the following statements about the OceanStor Toolkit installation of the OceanStor 9000 is incorrect?

Question60: Which of the following statements about IP address planning for the N8500 clustered HAS storage systems is incorrect?