Alibaba ACA-Operator ACA System Operator Certification Exam Exam Practice Test Questions

• Question 1

  Which of the following data volume types is not supported by Elastic Container Instance (ECI)?

  • EmptyDir
  • NFS
  • ConfigFile
  • FixedVolume

  Show Answer Answer: 4 Next

• Question 2

  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 chainconsist of?

  • 3
  • 4
  • 5
  • 6

  Show Answer Answer: 3 Next

• Question 3

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

  • DMS
  • DBS
  • DTS
  • DAS

  Show Answer Answer: 4 Next

• Question 4

  Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3)

  • Through the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud API or use the web console
  • A STS request consists of an access address, communication protocol, request method, request parameters and character encoding
  • When calling the STS API, in order to ensure the safe calling of the API, Alibaba Cloud will authenticate each API request through a signature when each API call is made
  • The STS service supports the use of both HTTP and HTTPS protocols

  Show Answer Answer: 1,,2,,3 Next

• Question 5

  PolarDB supports three engines: MySQL, PostgreSQL and Oracle.

  • True
  • False

  Show Answer Answer: 2 Next