Online Access Free ACA-Operator Exam Questions

Which of the following statements about ECS Snapshot is NOT correct?

• A.You can create an ECS instance from a snapshot
• B.You can manually create snapshots
• C.You can roll back a disk by using a snapshot
• D.You can create automatic snapshots

A developer has written a web application using a microservice architecture, in such an architecture, the client (web browser or mobile application) first initiates a request. The request first reaches the load balancer, then goes through an authentication service, a billing service, then requests a resource, and finally a result is returned. How many spans does such a call chain consist of?

• A.3
• B.4
• C.5
• D.6

In Alibaba Cloud, a developer finds that the ECS instance he created does not have public IP assigned. The API method used was "CreateInstance". Which of the following is the most likely reason?

• A.The developer did not call AllocatePublicIpAdress (an additional API call), which is needed to assign a public IP
• B.The CreateDisk API call was not made
• C.The ECS was not restarted after being created
• D.The CreateSecurityGroup API call was not made

CloudMonitor is for tracking operations on cloud resources.

• A.False
• B.True

Which of the following options correctly describes CloudMonitor Custom Monitoring and Custom Events?
(Number of correct answers: 2)

• A.Custom Events is used for collection of continuous event type data, queries, and alarms
• B.Custom Monitoring is used for periodic and continuous collection of time series monitoring data, queries, and alarms
• C.Custom Monitoring is used for collection of non-continuous event data, such as information about ECS instance restarts
• D.Custom Events is for periodic and continuous collection of time series monitoring data, queries, and alarms