Regarding the traditional model and cloud computing model, high reliability in the data center and cross-data center disaster recovery methods, the following says
What is wrong?
A.
In the traditional mode, the data center relies on component redundancy to achieve high reliability
B.
In the cloud computing mode, the data center relies on component redundancy to achieve high reliability
C.
In 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
D.
In the cloud computing mode, cross-data center disaster recovery is the replication of all data in the business data and operating environment.
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