Font size
WorksheetsLMS-Infosyte Test-4
Total questions: 56
Worksheet time: 28mins
Which of the following statements about data is incorrect?
Data refers to numbers, letters, and symbols that have a certain meaning.
Data is information that has been processed and is logically related.
Data can be input to a computer for processing.
Data can be input to a computer and processed by a computer program.
Storage class memory (SCM) is a new type of NAND medium. It is non-volatile memory with the access speed slightly lower than traditional memory. Select one:
True
False
Which of the following protocols is commonly used in SAN networking?
NFS
CIFS
iSCSI
FTTP
Which of the following is not a PCIe device layer in the PCIe protocol structure?
Data link layer
Physical layer
Presentation layer
Transaction layer
Scale-out storage can store data on multiple independent devices. Which of the following are advantages of scale-out storage?
High-performance snapshot
High-performance linked clone
Global load balancing
High performance
Common Internet File System (CIFS) has high requirements on network transmission reliability, so it usually uses TCP/IP. Select one:
True
False
Which of the following are devices connected using FC HBA?
Server and server
Server and IP-SAN array
Server and Fibre Channel array
Fibre Channel array and IP storage array
Which of the following storage network architectures can provide file-level sharing services for hosts?
DAS
NAS
FC SAN
IP SAN
Which of the following back end ports are supported by Huawei's next-generation hybrid flash storage?
100 Gbit/s RDMA
25 Gbit/s RDMA
32 Gbit/s FC
12 Gbit/s SAS
RAID is used to group multiple independent physical disks into a logical disk in different ways. It offers data redundancy technologies and improves storage performance to a higher level than a single disk. Select one:
True
False
The mirroring function of RAID is superior to the parity check function in terms of storage space utilization and data security. Select one:
True
False
Which of the following levels can RDMA route data packets to with transport offload?
Application level
Chip level
Memory level
Process level
Which of the following statements is correct about serial and parallel transmissions?
With low speeds and low costs, serial transmission is suitable for long-distance transmission.
With low speeds and low costs, parallel transmission is suitable for short-distance transmission.
With fast speeds but high costs, parallel transmission is suitable for long-distance transmission.
With fast speeds but high costs, serial transmission is suitable for short-distance transmission.
Assume a storage device uses RAID 2.0+. If a disk fails, the valid data on the faulty disk is reconstructed to all other functioning disks in the resource pool (fast one-to-many reconstruction), to resume redundancy protection. Select one:
True
False
Each OceanStor Dorado V6 4 U controller enclosure has two power modules, PSU 0 and PSU 1, which form a power plane and work in redundancy mode. Select one:
True
False
Which of the following concepts are involved in Huawei RAID 2.0+?
Grain
CKG
Extent
CK
A LUN is a storage unit that can be directly mapped to a host for data reads and writes. It is the external embodiment of a volume. Select one:
True
False
JBOD is a collection of disks, usually called a disk chassis. Select one:
True
False
Which of the following is the scale-out technology used by Huawei OceanStor Dorado V6?
SCSI scale-out
IP scale-out
PCIe scale-out
SAS scale-out
In a storage system that supports iSCSI, the entire process from when a host sends a data request to when the data is returned to the host is transparent to users. Select one:
True
False
What are the types of SSDs?
MLC
SLC
QLC
TLC
Which of the following are storage services provided by Huawei scale-out storage?
Block storage
File storage
Object storage
Quantum storage
Which of the following statements about the Huawei dynamic RAID algorithm are correct?
If a block in a RAID array fails, the system recovers and migrates the data in the faulty block, shields the faulty block, and reconstructs a new RAID array using remaining blocks.
This RAID algorithm dynamically adjusts the number of data blocks in a RAID array to meet system reliability and capacity demands.
The flash memory space is effectively used to the maximum extent.
The dynamic RAID algorithm also applies to scenarios where HDDs and SSDs are configured together.
The SCSI protocol is related to the transmission media and can be used for transmission only through specific media. Select one:
True
False
In RAID 2.0+, which of the following is the minimum granularity to allocate storage space in thin LUN mode?
Grain
Extent
Chunk
Chunk Group
Compared with the traditional PCI bus, which of the following are advantages of PCIe?
Error handling and error reporting capabilities
Hot swappable
Compatible with PCI and backward compatible with PCI software
Dual channels, high bandwidth, and high transmission rate
In the SCSI-based DAS architecture, which operations are facilitated by the SCSI card?
Implements physical connections between servers and storage I/Os.
Backs up data periodically.
Performs conversion between I/Os and SCSI protocol packets inside servers.
Stores data permanently.
Disks can be classified into enterprise-grade and desktop-grade disks according to their usage. Select one:
True
False
PCIe is an interface form and a bus standard, and NVMe is a standard interface protocol customized for PCIe SSDs. Select one:
True
False
Which of the following statements about CIFS and NFS is incorrect?
NFS can automatically recover faulty links.
NFS is commonly used for file service access of Linux hosts.
CIFS provides higher usability than NFS and requires additional software on the host.
CIFS is commonly used for file service access of Windows hosts.
Which of the following problems can be resolved using the NVMe standard?
Compatibility of different PCIe SSDs on hosts
Driver applicability between different PCIe SSDs
Transmission consistency in different PCIe standards
Compatibility of hardware interfaces using different PCIe standards
In SmartMigration, service data synchronization between the source LUN and target LUN includes initial synchronization and change data synchronization. In the latter, the host needs to stop services and sends an I/O write request to the storage system. The system starts change data synchronization and writes changed service data to the source LUN and target LUN using dual write at the same time. Select one:
True
False
Which of the following compression modes is not supported by Huawei all-flash series storage products?
Post-process compression
Lossless compression
Lossy compression
Inline compression
In Huawei all-flash storage product OceanStor Dorado V6, which of the following storage media constitutes a SmartCache pool?
SCM drives
SAS disks
SSDs
SATA disks
Which of the following commands is used to query the function configuration of the imported license file in the storage system?
show system
show system general
show license
show license_active
Which of the following layers is not included in the OceanStor Pacific block storage system architecture?
Storage engine layer
Storage service layer
Storage network layer
Storage driver layer
Which of the following are mandatory parameters for creating a LUN snapshot?
Whether to activate the snapshot
Snapshot name
Snapshot description
Save path
Which of the following operations can be performed on the license management page of DeviceManager?
Uninstall a license.
Activate a license.
Update a license.
Import a license.
The all-flash storage product features high reliability. Which of the following technologies are used to ensure high reliability of the system?
Power-off protection
Advanced data protection technologies, such as HyperSnap and HyperReplication
Coffer disk
Dual-redundancy design and active-active working mode
Huawei all-flash storage uses the adaptive intelligent deduplication detection to prioritize service performance for users and automatically switch deduplication modes based on service loads, avoiding the disadvantages of fixed deduplication mode. Select one.
True
False
When post-process similarity-based deduplication is used, the storage system divides newly written data into blocks. The default data block size is 8 kb. Select one.
True
False
Data written to a scale-out storage system is sliced into N (an even number) data blocks, and M parity blocks are obtained by using the EC encoding algorithm. What are the possible values of M?
3
2
4
1
Which of the following is a system installation tool that can be used to quickly install and deploy a FusionCube system onsite?
FusionCube Center
FusionCube DeviceManager
FusionCube Builder
FusionCube Agent
Which of the following statements about thin LUNs is correct?
The capacity of a thin LUN is the actual physical space.
The capacity of a thin LUN is not the actual physical space.
Thin LUNs cannot be directly mapped to hosts.
The capacity of a thin LUN cannot be greater than the maximum physical space provided by the storage system.
HyperCDP is a high-density remote replication technology that provides continuous data protection. Select one.
True
False
Which of the following statements about the HyperClone reverse synchronization of Huawei storage (such as Huawei OceanStor hybrid flash storage) are correct?
Both full synchronization and incremental synchronization are supported in reverse synchronization.
Reverse synchronization, once started, cannot be stopped until data synchronization is complete.
When a reverse synchronization is started, the system creates a point-in-time snapshot for the target LUN and synchronizes all the snapshot data to the source LUN.
For incremental synchronization, only differential data between the target and source LUN is synchronized.
Which of the following operations cannot be performed on the license management page of DeviceManager?
Uninstall a license.
Active a license.
Import a license.
Update a license.
Storage management is to query, set, manage, and maintain storage systems using management tools. Which of the following are subject to storage management?
Device performance monitoring
User management
Alarm management
Storage resource configuration
Data protection feature management
Assume that:
1. A LUN has data a;
2. A snapshot (Snap1) is created and activated for the LUN;
3. A host changes data a in Snap1 to data b;
4. After the data change, a snapshot copy (Snap2) is created for Snap1.
In this case, when the host accesses Snap2, data a is returned.
True
False
Assume every day a hospital archives a large number of patient cases and test results. However, its storage resources are limited. Which of the following deduplication modes can ensure these operations without occupying transmission bandwidth?
Target deduplication
Source deduplication
Inline deduplication
Post-process deduplication
Huawei storage provides comprehensive DR features. Which of the following implements unified, intelligent, and simplified DR scheduling and O&M with OceanStor BCManager?
Snapshot
3DC
Active-active
Active/Standby
Which of the following operators are used to complete CLI commands during storage management?
Tab
Enter
Space key
|
During routine inspection, an O&M engineer finds that an alarm is generated on a storage device and performs quick maintenance. Which operation is incorrect?
Check the indicator status and rectify related faults.
Check the system performance and handle related exceptions.
Check the service status and rectify related faults.
Restart the storage device.
Which of the following management services are included at the process layer of the ITIL process management framework?
Change management
Configuration management
Release management
Problem management
Event management
DME Storage is positioned as an automatic full-lifecycle storage management platform. Which of the following phases are included in automatic full-lifecycle storage management?
Deployment
Optimization
Planning
O&M
Engineer A is responsible for managing the storage devices of a company. Which of the following operations are included in storage management?
Device performance monitoring
User management
Alarm management
Storage resource allocation
