The backup software in the backup system is called the backup server.

• A.True
• B.False

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Which of the following statement about DAS is wrong?

• A.When the direct connection between the server and the storage device leads to new application requirements, the storage device can only be configured separately for the newly added server, resulting in repeated investment
• B.DAS data is still scattered, and different applications have a set of storage devices. Management is scattered and cannot be centralized
• C.DAS storage space can be fully utilized, storage devices that can be shared by different application servers, and spare storage space can be fully utilized
• D.DAS refers to the direct connection of storage devices to the server through SCSI cables or Fibre Channel

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Regarding the high reliability and cross-data center disaster recovery methods in the data center under the traditional mode and cloud computing mode, which of the following is wrong?

• A.In the traditional mode, the data center relies on component redundancy to achieve high reliability
• B.In the cloud computing model, cross-data center disaster recovery is all the data replication of business data and operating environment. The integrated management and recovery process is simple and the recovery period is short.
• C.In the cloud computing mode, the data center relies on component redundancy to achieve high reliability
• D.Under the traditional model, cross-data center disaster recovery is mainly based on copying business data, and the recovery process is complicated and the recovery period is long.

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Regarding the characteristics of the LAN-BASED backup method, which of the following is incorrect?

• A.The backup data is based on LAN, which affects network performance
• B.The backup business needs to be maintained separately, which increases the difficulty of management and maintenance
• C.The backup agent will affect the performance of the application server
• D.The instruction flow passes through the LAN network, and the data flow does not pass through the LAN network

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Regarding data-level, application-level, and business-level disaster recovery, which of the following statements is correct?

• A.Regarding TCO, data-level <application-level <business-level
• B.Regarding TCO, business-level <data-level <application-level
• C.Regarding RTO, data-level <application-level <business-level
• D.Regarding RTO, data-level <business-level <application-level

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