The three elements of the CAP principle of a distributed database system are: Consistency, Availability, and Partition tolerance.
Regarding the three elements of CAP that the database follows, which of the following descriptions are correct? (Multiple choice)

• A.For most web application databases, they follow the CPA principle. In design, consistency is usually sacrificed in exchange for high availability. Partition tolerance of traditional relational databases is a basic requirement.
• B.In a distributed system, these three elements can only achieve two points at the same time at most, and it is impossible to give consideration to all three.
• C.For distributed data systems, partition tolerance is a basic requirement

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When planning and designing storage solutions, if customers focus on satisfying performance, which of the following aspects should be planned and designed? (Multiple choice)

• A.Network bandwidth
• B.Number of hard drives
• C.Hard disk type
• D.RAID level

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Before a customer purchases Huawei storage devices for video surveillance, backup, and archiving, what factors do they need to consider?

• A.Latency
• B.IOPS
• C.Bandwidth
• D.CPU usage

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In a fully redundant SAN infrastructure there is no need to use multipathing software on hosts that run Linux-based operating systems.

• A.TRUE
• B.FALSE

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Which of the following scenarios is most suitable for the SmartCache feature of Huawei hybrid flash storage?

• A.Read sequential I/O scenario
• B.Write random small I/O scenarios
• C.Write sequential I/O scenario
• D.Read random small I/O scenario

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