HUAWEI CLOUD ServiceStage application performance analysis provides powerful analysis tools. So that users can quickly locate fault points and bottlenecks. In addition to tools such as call chain, transaction application status, call process, etc., what other charting tools can be used?

When the operation and maintenance administrator use APM for transaction operations, which of the following is not a transaction operation supported by APM?

When the user uses the "site monitoring" function of Huawei Cloud CES, which of the following time intervals cannot be selected for the PING monitoring frequency?

Huawei Cloud APM application performance monitoring uses the Apdex value to measure the performance of the application.
When the Apdex value is within which range of the following options, it means that the user experience is poor?

After a user has purchased a Huawei Cloud ECS elastic cloud server with CentOS 7.2 operating system.
Which of the following operations does not violate Huawei Cloud ECS usage restrictions?