Which of the following are middleware services provided by Huawei public cloud? (Multiple choice)

• A.DCS: Distributed Cache Service
• B.CMQ: Cloud Message Queue
• C.DMS: Distributed Message Service
• D.DRDS: Distributed Relational Database
• E.DDM: Distributed database service

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Users of the Huawei Cloud Container Engine CCE service cannot upgrade the old version of the cluster.

• A.False
• B.True

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Huawei cloud storage disaster recovery service can meet the user's requirement to achieve RPO=0.

• A.True
• B.False

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The Huawei Cloud blockchain service supports ICO issuance.

• A.False
• B.True

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The subsidiaries of a certain enterprise group are distributed all over the country, and each subsidiary has its own system. The headquarter of the group wants to aggregate the data of these 11 systems to realize group information sharing. Which of the following core Platform service of the smart park solution will be used to solve this problem? (Multiple choice)

• A.OcearCornect
• B.MRS
• C.Video Cloud
• D.DAYU
• E.ROMA

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