What are the advantages of parallel data deduplication? (Multiple choice)

When planning the front-end service network IP address for the C72 node of Huawei Oceanstor 9000, you need to plan 4 static front-end IP addresses for each node.

An enterprise application was backed up as follows: On February 1 (Feb1), full backup of all files and directories was implemented. On February 2 (Feb2), 3 (Feb3), and 4 (Feb4), cumulative incremental backup was implemented. On February 5, service disks failed.
If the enterprise wane to restore the application to the state preserved on February 4, which backup files are needed?

In data backup scenarios, which are characteristics of disk backup devices, compared with physical tape libraries? (Multiple Choice)

The backup solution can prevent the loss of production data or the data center suffers a devastating disaster, the recovery time is short, and the business continuity is guaranteed.