QUESTION 81
After a remote replication consistency group is created, if one remote replication task is faulty, other tasks in the consistency group run normally without waiting for the faulty task to recover.
A. TRUE
B. FALSE
Correct Answer: B
QUESTION 82
A financial customer has purchased several Huawei flash storage devices for service deployment. An engineer configures the SmartMigration feature on the storage devices. If the engineer wants to start LUN migration synchronization, the engineer can run the “change lun_migration_split consistency” command.
A. TRUE
B. FALSE
Correct Answer: B
QUESTION 83
Assume an industry customer purchased several Huawei OceanStor Pacific 9950 scale-out storage devices for service deployment. An engineer needs to configure the NFS file share service on the storage devices. Which of the following statements is true about configuration operations?
A. To enable the NFSv4.0 service, the engineer can run the “change service nfs_config nfsv40_status=enable account_name=XX” command.
B. When creating an NFS share, the engineer does not have to select a namespace, but must select a dtree.
C. When configuring the service network, the engineer must create subnets and access zones, and disable the common DNs service during subnet configuration.
D. Before creating an account, the engineer must create a dtree and namespace.
Correct Answer: A
QUESTION 84
During routine inspection, an engineer notices that the running indicator of the power supply unit (PSU) in an OceanStor Dorado 8000 storage system blinks green continuously. What are the possible states of the PSU?
A. The PSU is upgrading online.
B. The PSU is faulty.
C. The power input is normal and the device does not start up.
D. There is no external power input.
Correct Answer: AC
QUESTION 85
During the initialization of Huawei flash storage systems, engineers can set multiple user roles to manage the storage systems. Which of the following user roles have the control permission for storage?
A. Administrator
B. Read-only user
C. Super administrator
D. USM user
Correct Answer: AC
QUESTION 86
Assume an engineer needs to configure trap notification for multiple Huawei flash storage systems. Which statements are false about the configuration?
A. If SNMPv2c is used during trap notification configuration, you must configure a USM user in the storage system in order to log in to the upper-level external network management system.
B. If SNMPv1 or SNMPv3 is used during trap notification configuration, you must configure an SNMP community string in the storage system to interconnect with a third-party network management system.
C. To query or modify the security policy for the SNMP service, run the “show snmp safe_strategy’” or “change snmp safe_strategy’” command on the command-
line interface (CLI).
D. During the configuration of USM user information, the authentication algorithms include”MD5′,”SHA”, “SHA224″,”SHA256”, “SHA384鈥? and “SHA512鈥?
Correct Answer: AC
QUESTION 87
Which statements are true about hardware installation of Huawei OceanStor Pacific series storage systems?
A. The procedure for cabinet non-fastening installation on a concrete floor is the same as that on an ESD floor, including positioning, leveling, combining, and securing cabinets.
B. When powering on devices, engineers must power on the devices in the cabinet and then the cabinet.
C. Optical modules are electrostatic sensitive components. When operating the devices, engineers must wear electrostatic discharge (ESD) wrist straps. There is no specific requirement for wearing ESD gloves and clothes.
D. Before connecting node signal cables, internal components, PGND cables, and power cables must be installed.
Correct Answer: AD
QUESTION 88
In Huawei flash storage, the administrator role has full control permissions on storage devices. The administrator can power on, power off, and restart devices and create users of different roles.
A. TRUE
B. FALSE
Correct Answer: B
QUESTION 89
Assume a government office purchases several Huawei OceanStor Pacific series storage products. Which statement is false about the hardware and software deployment of the storage products?
A. During software deployment, DeviceManager must be used to initialize the network of nodes.
B. During software deployment, SmartKit can be used to configure clusters, such as disabling Link Layer Discovery Protocol (LLDP) for an OS and enabling the function of Baseboard Management Controller (BMC) mobile customization.
C. During hardware deployment, SmartKit can be used to install OSs in batches.
D. SmartKit can be used to configure the BMC IP addresses, subnet masks/prefixes, gateways, and BMC host names, and to check the firmware, OS, and driver versions.
Correct Answer: A
QUESTION 90
Assume an industry customer purchased multiple Huawei OceanStor Dorado series flash storage devices and one OceanStor Pacific series scale-out storage device for service deployment. The OceanStor Dorado series storage devices are used for database query and large file storage services, and the OceanStor Pacific storage device is used for the VOD service. If the customer wants to pass the SAN performance certification formulated by SPC, the customer should use the performance benchmark for related certification.
Correct Answer: SPC-2
QUESTION 91
OPS is a basic indicator in the storage performance evaluation system. It can be used to measure the file processing capability of Huawei converged storage devices in file server scenarios.
A. TRUE
B. FALSE
Correct Answer: A
QUESTION 92
In Huawei OceanStor Dorado series storage systems, the cache write policy is set to write-through by default. The write policy may change in the event of a battery fault or if the system has only one controller.
A. TRUE
B. FALSE
Correct Answer: B
QUESTION 93
Cache policies and configurations are involved in storage-layer performance optimization of Huawei flash storage. Which of the following statements is false about the high and low watermarks of a cache?
A. If the high watermark of the cache is too high, the write performance will be affected. If the low watermark of the cache is too low, the read performance will be affected.
B. Generally, the high watermark of the cache should not be too high, and the difference between the high and low watermarks should not be too small.
C. If the high watermark of the cache is too high, I/O fluctuation and latency increase will occur usually when the current I/O traffic bursts.
D. Generally, the low water mark for storing dirty data in the cache should not be too low. The recommended value is 20%.
Correct Answer: D
QUESTION 94
Assume a company purchased a Huawei flash storage device for service deployment. An engineer has created a thin LUN on the storage device. Which of the following statements are true about thin LUN performance?
A. During creation of thin LUNs, the system uses the automatic resource configuration technology to allocate storage resources for the thin LUNs at a time. This ensures the continuity of the space mapped to disks. Therefore, the sequential read performance is poor.
B. A thin LUN is formatted after being created. First write involves only write I/Os of the host and the performance is very good.
C. Thin LUNs dynamically allocate storage resources based on actual user requirements. Space allocation is not continuous, which affects the continuity of the space mapped to disks.
D. Space is allocated when new data is written into a thin LUN, leading to frequent read and write I/Os of metadata and a longer write process.
Correct Answer: CD
QUESTION 95
Assume a financial customer purchased multiple Huawei OceanStor Dorado 18000 storage devices to carry service data. A Fibre Channel link exception occurred in the storage environment. Which of the following are possible causes for this exception?
A. When a switch network is used, the configured rate of the Fibre Channel host port does not match that of the switch.
B. The optical fiber is poorly connected or faulty.
C. The IP address of the service network port on the application server is incorrectly set.
D. The optical module rate of host ports does not match that of front-end storage ports.
Correct Answer: ABD
QUESTION 96
When demarcating a performance issue of Huawei flash storage, engineer A finds that the latency observed on the compute side is much longer than that on the storage side. This indicates that the issue is most possibly occurred on the storage, for example, the disk performance upper limit has been reached.
A. TRUE
B. FALSE
Correct Answer: B
QUESTION 97
If an engineer wants to operate and maintain Huawei OceanStor Dorado series storage, the engineer can use the desktop tool management platform . This platform integrates O&M tools from different fields and provides guidance and standardized operations tailored to mainstream O&M scenarios.
Correct Answer: SmartKit
QUESTION 98
The host information checklist on Huawei flash storage includes the host configuration, multipathing software, and aggregation disk information. Which of the
following statements are true about the check items?
A. In HP-UX, the engineer can run the “‘scsimgr get_attr -a leg_mpath_enable” command to view the performance statistics.
B. In AN, the engineer can run the “upadm show path” command to view the physical path status.
C. In Linux, the engineer can run the “rpm -qa l grep UltraPath” command to check whether the UltraPath software is installed.
D. In Windows, the engineer can run the ” upadm show vlun’” command on the CMD to query information about all LUNs or a specified virtual disk.
Correct Answer: BCD
QUESTION 99
A government customer purchases a Huawei all-flash storage device to deploy a remote replication service. An engineer can run the “show consistency_group general” command on the command-line interface (CLI) to view the information about remote replication consistency groups.
A. TRUE
B. FALSE
Correct Answer: A
QUESTION 100
Generally, storage system faults can be classified into storage faults and external environment faults based on components where the faults occur. Which of the following are external environment faults?
A. Intermittent link disconnection
B. Interface module fault
C. Fan fault
D. Host bus adapter (HBA) fault
Correct Answer: AD