ACA-Operator ACA System Operator Certification Questions and Answers

You are responsible for the system operations of a product and have implemented the cloud infrastructure in the Alibaba Cloud platform. When

business loads increase, _______ automatically adds ECS instances to

ensure sufficient computing capabilities. When business loads decrease, the

same service automatically removes ECS instances to save costs. Which

service are you using?

Which of the following web applications are suitable for deployment on Simple Application Server (SAS), as compared with ECS? (Number of correct answers: 3)

Which database utility is suitable for automate perception, healing, optimization, O & M, and security assurance for databases?

When you use SQL statements to access tables in a database without an index configured, a full table scan will be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data and consume a lot of the database's resources. Which of the following options are best practices when creating database indexes? (Number of correct answers: 3)

Resource Management provides a collection of resource management services that support enterprise IT administration.

Which of these metrics are collected by CloudMonitor’s Host Monitoring function? (Number of correct answers: 3)

Which database utility is suitable for managing databases in a centralized manner?

Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)

Which of the following methods can NOT be used for operating Alibaba Cloud

Elastic Compute Service (ECS) instances?

Which of the following Alibaba Cloud services offers a software-defined wide area network (SD-WAN) solution based on cloud-native technologies?

Which of these log formats is currently supported by Alibaba Cloud’s ActionTrail?

Which of these services can be used to monitor Alibaba Cloud resources and send alerts? (Number of correct answers: 3)

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?

In order to deal with sudden spikes in traffic, Company A uses Alibaba Cloud

Auto Scaling to set up an alarm trigger task (growing the Scaling Group when

the average memory utilization on ECS instances exceeds 80%). During the

test, it was found that the alarm task was not executed successfully. Which of

these could be possible causes? (Number of correct answers: 3)

Alibaba Cloud ActionTrail is a service that monitors and records the actions of your Alibaba Cloud account, including the access to and use of cloud products and services through the Alibaba Cloud console, API operations, and SDKs.