The main function of data encryption service is to prevent data loss and damage.

• A.False
• B.True

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Regarding the description of DDS, which of the following statements is correct? (Multiple choice)

• A.Through the configuration of VPC, subnet, security group, DDOS protection and SSL security access and other multi-layer security protection systems, it can effectively resist various malicious attacks and ensure data security
• B.DDS has a high-availability architecture of multi-node replica sets, providing extremely high service availability guarantee
• C.The replica set contains multiple replicas. When the primary node fails, DS can achieve a second-level master/backup switch
• D.DDS supports read-write separation, and its write operations can only be performed on the master node in the replica set

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Enterprises deploy game services on HUAWEI CLOUD. The average daily bandwidth can reach 500Mbit/s, and the bandwidth can reach 2000Mbit/s during peak periods. For this scenario, which of the following options is the most suitable solution?

• A.Fixed bandwidth billing products in the package period mode
• B.Shared bandwidth with on-demand mode, billed by bandwidth
• C.Fixed bandwidth billing products in on-demand mode
• D.Enhanced 95 billing with on-demand monthly settlement mode

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Which of the following options are the challenges facing the microservice architecture? (Multiple choice)

• A.Increased failure probability, difficulty in monitoring and tracking, high call frequency, call chain length, increased uncontrollable factors under cross-VM and VAN communication
• B.It is easy to realize automated testing, with clear test cases, clear external dependencies, and easy access to pre-defined AP
• C.Data is no longer centrally managed and distributed to various microservices. Conventional transaction management cannot cross service boundaries.
• D.You can choose components freely according to the needs of the service, don't have to worry about dependency conflicts, microservices manage their own data

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If you use the HUAWEI CLOUD FunctionGraph service, if the function is not called, no billing information will be generated.

• A.False
• B.True

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