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The following description of the characteristics of the LAN-FREE backup method is incorrect:

A.

The backup data stream does not occupy LAN resources

B.

The backup proxy does not affect the performance of the application server

C.

Backup performance is usually higher than LAN-BASED

D.

Does not affect user network performance

Regarding OceanStor V3 LUN deletion, what is wrong in the following description?

A.

The deduplication function is used together with SmartCache to accelerate performance

B.

The taken-over heterogeneous array LUN supports block-level deduplication

C.

Deduplication and remote replication cannot coexist on the same LUN

D.

When the LUN is created, the deduplicated LUN is selected and cannot be restored to the state without deduplication.

An e-commerce website usually has a relatively stable business volume, so I purchased the server and built a private cloud operation

During the Double Eleven promotion, the business volume is very large, so we rent the server from the operator's public cloud to share the festival's burden

Netherlands, this cloud computing deployment model belongs to?

A.

Public cloud

B.

Private cloud

C.

Hybrid cloud

D.

Community Cloud

What is a measure of storage system performance?

A.

IOPS

B.

Bandwidth

C.

capacity

D.

Delay

What are the characteristics of big data? (Multiple choice)

A.

Write once, modify many times

B.

The value of data is uncertain

C.

Large capacity and fast growth rate

D.

Long storage time

What are the following errors about OceanStor V3 features?

A.

Cloning provides physical full copy, incremental copy

B.

Cloning does not support cross-engine LUN cloning, the master-slave LUN must be under the same engine

C.

LUN copy can support data backup and migration within and between arrays (including homogeneous and heterogeneous)

D.

LUN copy supports incremental LUN copy, and LUN copy should be done offline

The NAS device performs functions such as file service, storage, retrieval, and file access on the basis of a general-purpose server

optimization.

A.

TRUE

B.

FALSE

In the HUAWEI OceanStor storage system, which of the following descriptions about mapping snapshot LUNs is correct?

A.

The snapshot LUN mapped to the host can only be read, not written

B.

The activated snapshot LUN can be mapped to the host for reading and writing

C.

The snapshot LUN can only be mapped to the same host as the original LUN

D.

The description of all options is correct

The data backed up by the differential backup is relative to the data added and modified after the last full backup.

A.

TRUE

B.

FALSE

The dual switch network design is widely used in the FC SAN environment. The following description of the dual switch network redundancy design,

Which ones are correct? (Multiple choice)

A.

Deploy two FC switches in a SAN environment to cross connect to the two controllers of the storage device

B.

Each host requires 2 available FC ports, and connects the two ports to different switches

C.

The host port and storage device port on the switch that need to communicate must be in the same zone

D.

Although there are multiple paths, the dual-switch network only supports link redundancy and does not support load balancing

According to the changes in the amount of backup data, the types of backup can be divided into:

A.

Real-time backup

B.

full backup

C.

incremental backup

D.

differential backup

CKG is composed of multiple CKs on different hard disks of different types in the hard disk domain.

A.

TRUE

B.

FALSE

LAN Free and Server Free are backup networking methods that have little impact on host performance.

A.

TRUE

B.

FALSE

In the following backup media, the order of unit capacity price from low to high is:

A.

Tape, CD/DVD, SSD, virtual tape library

B.

CD/DVD, magnetic tape, virtual tape library, SSD

C.

tape, CD/DVD, virtual tape library, SSD

D.

CD/DVD, SSD, tape, virtual tape library

Among the components of the mechanical disk, the parts responsible for reading and writing data are:

A.

Disc

B.

Read/write head

C.

Magnetic head arm

D.

Spindle