QUESTION 181
Huawei OceanStor Pacific scale-out storage supports data protection. That is, the EC redundancy mechanism is configured to store N data blocks and M parity blocks on different nodes. If M nodes or M disks are faulty, the system can still read and write data without service interruption.
A. TRUE
B. FALSE
Correct Answer: A
QUESTION 182
When learning the SmartVirtualization feature of Huawei flash storage, a new employee is not familiar with eDevLUNs and external LUNs. Which of the following statements are true about the eDevLUNs and external LUNs?
A. eDevLUNs can be created regardless of whether external LUNs are normal.
B. If the administrator has not configured any value-added feature for eDevLUNs, each eDevLUN occupies small space in the storage pool of the local storage
system.
C. An eDevLUN consists of actual data and metadata. The storage space required by metadata is provided by the heterogeneous storage system, and the physical space required by actual data is provided by the local storage system.
D. eDevLUNs belong to storage pools created in the local storage system.
Correct Answer: AD
QUESTION 183
Which statements are false about the hardware architecture of Huawei OceanStor Dorado 18000 series storage systems?
A. If the controller power indicator on the front panel blinks green, an internal field replaceable unit (FRU) of the controller is faulty.
B. Each 4 U controller enclosure has four power supply units (PSUs) that are, from bottom to top, PSU O, PSU 1, PSU 2 and PSU 3.
C. Similar to OceanStor Dorado 8000, OceanStor Dorado 18000 is delivered not as bay but with optional cabinets by default.
D. When SmartCache is used, Storage Class Memory (SCM) cards must be installed in the controller enclosure. For dual controllers, up to four SCM cards can be installed in the controller enclosure, where SCM cards must be symmetrically installed in the upper and lower slots.
Correct Answer: ACD
QUESTION 184
Assume an industry customer purchases several Huawei flash storage devices for service deployment. After the devices are installed and deployed, the system initialization is required. Which statements about the initialization are true?
A. To change the IP address of the management network port using DeviceManager, ensure the maintenance terminal has been connected to the management network port of the storage device using a network cable. Also, the IP address of the maintenance terminal and the default IP address of the management network port on the storage device must be in the same network segment.
B. During initialization, engineers must configure the DME IQ and eService services. Configuring value-added features is optional.
C. If Windows AD domain authentication is used when a storage system is added to a domain, import the Certificate Authority (CA) certificate of the domain authentication server before selecting the LDAPS protocol.
D. For the short message service (SMS) notification, the storage system sends the SMS modem only the alarms and events generated before the SMs notification is configured but not those generated after the SMS notification is configured.
Correct Answer: AC
QUESTION 185
Assume a financial customer purchased a Huawei flash storage device for service deployment. During storage management, an engineer found that the LUN health status is write protection. Which of the following is not a possible cause of this phenomenon?
A. The battery is faulty.
B. The number of LUN fault pages exceeds the threshold.
C. The storage controller temperature is too high.
D. A reserved port on the storage switch is faulty.
Correct Answer: D
QUESTION 186
Assume a government customer purchased two Huawei all-flash storage devices for service deployment. During use of the storage devices, an engineer found that the storage performance fluctuated frequently. To troubleshoot the storage performance fluctuation issue, the engineer needs to perform many operations.
1. Check whether there is an obvious I/o model or service load change at the time when performance fluctuates.
2. Use FTDS, the latency locating tool on the storage side, to analyze the modules with fluctuated latency.
3. Check whether the hit rate changes abruptly at the time when performance fluctuates.
4. Check whether extremely small I/Os exist at the time when performance fluctuates.
5. Check whether there are obvious hardware resource bottlenecks on the storage side at the time when performance fluctuates.
6. Check whether there are obvious storage background tasks at the time when performance fluctuates. Among the above operations, which operations can be used for troubleshooting and which operations cannot?
A. Operations 1 and 2 can be used for troubleshooting, while operations 3, 4, 5, and 6 cannot.
B. Operations 1, 2, and 3 can be used for troubleshooting, while operations 4, 5, and 6 cannot.
C. Operations 4, 5, and 6 can be used for troubleshooting, while operations 1, 2, and 3 cannot.
D. Operations 1, 2, 3,4, 5, and 6 can all be used for troubleshooting.
Correct Answer: D
QUESTION 187
The ping-pong effect may happen when storage resources are used in multipathing mode. Which of the following are performance issues caused by the ping-pong effect?
A. The LUN access performance deteriorates.
B. The maximum number of concurrent write I/Os on a block device drops sharply.
C. Application servers restart automatically and frequently.
D. I/O timeout is likely to occur on application servers.
Correct Answer: ABD
QUESTION 188
In Huawei converged storage, availability refers to the capability of a system to quickly recover the operating environment from damage. If the availability of the storage product is 99.9999%, what is the downtime within one year?
A. 5.2 minutes
B. 0.52 minutes
C. 52 minutes
D. 10 minutes
Correct Answer: B
QUESTION 189
An industry customer purchases several Huawei flash storage devices for service deployment. During an inspection, an engineer finds that some storage components are faulty and need to be removed and replaced. Which of the following statements is true about the part removal and replacement?
A. The memory modules and system disks of the storage device can be removed and replaced independently.
B. The interface modules and system subracks of the storage device can be replaced independently.
C. The CPUs of the storage device cannot be replaced independently, but can be removed independently.
D. The coin batteries of the storage device cannot be replaced or removed.
Correct Answer: B
QUESTION 190
An industry customer purchases a Huawei flash storage device. During an inspection, an engineer finds that there is a faulty interface module on the device, but the fault is common, so the engineer does not need to perform emergency handling.
A. TRUE
B. FALSE
Correct Answer: B
QUESTION 191
A financial customer purchases a Huawei OceanStor Dorado series storage device for service deployment. During an O&M process, the administrator finds that DeviceManager fails to be loaded. Which of the following is not a cause of this error?
A. Browser incompatibility
B. Abnormal browser cache data
C. Fibre Channel (FC) switch fault
D. Network issue
Correct Answer: C
QUESTION 192
An industry customer has purchased several Huawei flash storage devices for service deployment. An engineer wants to configure the HyperReplication feature on the storage devices. During the configuration, the engineer needs to create an authentication user with the role of “Remote device administrator” on the remote device and then add the remote device.
A. TRUE
B. FALSE
Correct Answer: A
QUESTION 193
An enterprise has purchased several Huawei OceanStor Pacific series storage devices. An engineer wants to configure the CIFS share service on them. Which of the following statements are true about the service configurations?
A. Before creating a converged resource pool, the engineer must enable the file service for nodes. Otherwise, subsequent operations cannot be performed.
B. In a domain environment, the engineer needs to create a local authentication user, add the local user to a user group, and use the user group for authentication to access a share.
C. If a user’s service network has multiple network segments, the engineer can configure multiple subnets to enable clients in different service network segments to access the storage network.
D. After CIFS shares are allocated to domain users, the engineer cannot modify the domain user information. Otherwise, the CIFS shares cannot be accessed.
Correct Answer: ACD
QUESTION 194
A financial customer has purchased several Huawei scale-out storage devices, and an engineer wants to install the distributed parallel client (DPC). During DPC creation, the engineer can batch import nodes, and authentication is not required .
A. TRUE
B. FALSE
Correct Answer: B
QUESTION 195
SmartMigration is a key service migration technology that helps users migrate service data between storage systems. Which of the following statements are true about SmartMigration commands?
A. The “change lun_migration_pause” command is used to split a LUN migration task.
B. The “delete lun_migration” command is used to delete a LUN migration task.
C. The “change lun_migration_split consistency’” command is used to start LUN migration synchronization.
D. The “show license” command is used to check the license file.
Correct Answer: BD
QUESTION 196
As a next-generation storage system, Huawei OceanStor Dorado series can focus on core enterprise services and meet enterprises’ service requirements. Which of the following statements are false about Huawei OceanStor Dorado series storage systems?
A. OceanStor Dorado 18000 supports a maximum of 28 interface modules and implements intra-engine mirroring and cross-engine interconnection through the 100 Gbit/s RDMA network.
B. OceanStor Dorado 18000 uses 200 Gbit/s RDMA shared interface modules for cross-engine expansion, implementing full interconnection between 8, 12, and 16 controllers.
C. Dorado V6 series and new converged storage products use the PCIe Scale-Out architecture.
D. The backend shared interface module of OceanStor Dorado 18000 is inserted into the enclosure. The disk enclosure connected to the interface module can be accessed by controllers in the engine at the same time.
Correct Answer: BC
QUESTION 197
Huawei OceanProtect Appliance adopts the key technology of CPU core grouping and intelligent scheduling, which is widely used by customers in many industries. Which of the following is the advantage of this technology?
A. The scheduler can distribute jobs to other cores based on the service load status, implementing load balancing.
B. When this technology is used to carry different services, some cores are overloaded, resulting in high latency.
C. The system can prefetch data and metadata from all LUNs, improving the cache hit ratio.
D. This technology implements physical and logical isolation of resources, reducing latency.
Correct Answer: A
QUESTION 198
When the OceanStor Pacific series system is overloaded, inline deduplication automatically stops and switches to post-process deduplication. At this moment, data is flushed to disks for persistent storage. When sufficient system resources are available, the system starts post-process deduplication.
A. TRUE
B. FALSE
Correct Answer: A
QUESTION 199
An industry customer has purchased several Huawei flash storage devices for service deployment. To ensure service data reliability, an engineer needs to configure the HyperReplication feature on the storage devices. Which of the following statements is false about the engineer’s configuration?
A. If IP addresses of the logical ports on the primary and secondary storage devices are on different network segments, the engineer needs to configure routes on the primary and secondary storage devices separately.
B. When creating a logical port, the engineer needs to configure parameters such as the IP address, subnet mask, gateway, and port type for the logical port.
C. When adding a remote device, the engineer needs to configure the username and password for the remote device.
D. Before adding a remote device, the engineer needs to create a protection group and a remote replication consistency group.
Correct Answer: D
QUESTION 200
A government customer has purchased several Huawei flash storage systems for service deployment. To ensure service data reliability, an engineer configures the HyperSnap feature for file services on the storage systems. Which of the following commands cannot be used by the engineer to modify the basic properties of a file system snapshot?
A. change fs_snapshot general
B. change fs_ snapshot restore
C. show fs_snapshot general
D. change hyper_cdp_schedule general
Correct Answer: BCD