On the topological diagram of HUAWEI CLOUD Application Operation and Maintenance, as shown by the arrow in the figure below, the circle is divided into three segments, but the length of the three segments is different. What does this mean?

• A.The microservice was called three times
• B.Three faults are monitored
• C.All instances of the service have failures, and the number of failures is different
• D.There are three Tomcat instances, but the load is uneven among the instances

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Which of the following options are the storage types of HUAWEI CLOUD OBS? (Multiple choice)

• A.High frequency storage
• B.Archive storage
• C.Low frequency storage
• D.Standard storage

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Which of the following types of protocols does the listener of the ELB instance support? (Multiple choice)

• A.UDP
• B.TCP
• C.ICMP
• D.HTTP/HITPS

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The application of the microservice architecture in the cloudification scenario needs to analyze and regularly check problems through logs. The application of traditional log location methods is often time-consuming and laborious. Which of the following statements about the log function provided by HUAWEI CLOUD application operation and maintenance service is correct?

• A.It can combine the binding information of the log and the original context data to assist in locating the problem
• B.No need to enter the background, you can view application logs in real time on the ServiceStage application operation and maintenance interface
• C.Use the log retrieval function to quickly query the required logs among the massive logs
• D.The log file cannot be exported on the ServiceStage application operation and maintenance interface, and the export log file can only be viewed online on the operation increase interface. Only online

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Which of the following is not an application scenario for intrusion detection?

• A.Illegal entry into key areas
• B.Ascent/climb detection
• C.Face attendance
• D.Illegal entry into dangerous areas

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