100% Pass Top-selling ACA-Operator Exams - New 2021 Alibaba Cloud Pratice Exam
Alibaba System Operator Dumps ACA-Operator Exam for Full Questions - Exam Study Guide
NEW QUESTION 21
Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3)
- A. A STS request consists of an access address, communication protocol, request method, request parameters and character encoding
- B. 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
- C. The STS service supports the use of both HTTP and HTTPS protocols
- D. 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
Answer: A,B,D
NEW QUESTION 22
Which configuration language does Terraform support?
- A. HCL
- B. YAML
- C. Python
- D. XML
Answer: A
Explanation:
Explanation
https://www.terraform.io/docs/language/syntax/configuration.html
NEW QUESTION 23
Which of the following features are unique to Alibaba Cloud Container Registry, as compared with Docker Hub? (Number of correct answers: 2)
- A. Container Registry can automatically build new Docker images when source code changes.
- B. For source code hosted on websites outside China, Container Registry can use servers outside China to build Docker images, even when you are using a Container Registry instance in Mainland China.
- C. You can set your image repository access to public or private.
- D. You can create and delete image repositories in different regions based on your needs.
Answer: B,D
NEW QUESTION 24
Which command is used to get the Docker daemon information?
- A. docker version
- B. docker image
- C. docker pull
- D. docker info
Answer: D
Explanation:
Explanation
https://docs.docker.com/engine/reference/commandline/info/
NEW QUESTION 25
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.
- A. True
- B. False
Answer: A
NEW QUESTION 26
Which command should you run to create the resources described in the Terraform scripts?
- A. terraform plan
- B. terraform init
- C. terraform destroy
- D. terraform apply
Answer: D
Explanation:
Explanation
https://www.terraform.io/docs/cli/commands/apply.html
NEW QUESTION 27
Which of the following web applications are suitable for deployment on Simple Application Server (SAS), as compared with ECS? (Number of correct answers: 3)
- A. Quickly build a personal, learning, or test environment
- B. Quickly build a personal blog website
- C. Set up a NoSQL database service
- D. Quickly build a small e-commerce website
- E. Quickly build serverless site using Function Compute
Answer: A,B,D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/58620.htm
NEW QUESTION 28
A system operator can tag resources for costing and billing purposes.
- A. True
- B. False
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/25477.htm
NEW QUESTION 29
Which of the following options correctly describes CloudMonitor Custom Monitoring and Custom Events?
(Number of correct answers: 2)
- A. Custom Events is for periodic and continuous collection of time series monitoring data, queries, and alarms
- B. Custom Monitoring is used for periodic and continuous collection of time series monitoring data, queries, and alarms
- C. Custom Events is used for collection of continuous event type data, queries, and alarms
- D. Custom Monitoring is used for collection of non-continuous event data, such as information about ECS instance restarts
Answer: B,C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/35170.htm
NEW QUESTION 30
Alibaba Cloud Log Service allows you to store and search logs from a variety of sources, but has no built-in visualization capabilities.
- A. True
- B. False
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/102530.htm
NEW QUESTION 31
A developer needs to use some sensitive business data and operational data in the process of developing a program, but the data should be protected (encrypted or anonymized) as much as possible. In order to facilitate and secure management of data encryption keys, the developer can use Alibaba Cloud Key Management Service (KMS) envelope encryption technology. Which of these statements is NOT correct, regarding KMS?
- A. Envelope encryption is an encryption mechanism similar to digital envelope technology. The technology allows you to store, transfer and use encrypted data by encapsulating their Data Keys (DKs) in an envelope, instead of \y encrypting/decrypting data directly with Customer Master Keys (CMKs).
- B. The master key generated by KMS is also kept by the user.
- C. Developers can generate a plaintext data key and a ciphertext data key by calling the GenerateDataKey interface.
- D. The user uses the master key created on KMS to encrypt and decrypt the generated data key.
Answer: A,C,D
NEW QUESTION 32
After you enable health checks of Server Load Balancer (SLB), when one backend ECS instance is declared as unhealthy, which of the following statements is correct?
- A. Requests are forwarded to other normal ECS instances. When the faulty ECS instance becomes normal, SLB forwards requests to the ECS instance again
- B. Requests are not forwarded to the ECS instances and you get back a 400 error
- C. Requests are forwarded to other normal ECS instances and the unhealthy ECS instance is shutted down
- D. Requests are not forwarded to the ECS instances and you get back a 500 error
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/27702.htm
NEW QUESTION 33
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. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
Explanation
1-request, 2-load balancer, 3-authentication service, 4-billing service, 5-resource request
NEW QUESTION 34
Which of the following fields should be defined in the Alibaba Cloud Terraform Provider Configuration? (Number of correct answers: 3)
- A. region
- B. ecret_key
- C. access_key
- D. image_id
Answer: A,B,C
Explanation:
Explanation
https://www.terraform.io/docs/language/providers/requirements.html
NEW QUESTION 35
Which of these are important concepts in Terraform's configuration language, HCL? (Number of correct answers: 3)
- A. Service Mesh
- B. Resource
- C. Provider
- D. Variable
Answer: B,C,D
NEW QUESTION 36
Which of the following statements about ECS Snapshot is NOT correct?
- A. You can manually create snapshots
- B. You can create automatic snapshots
- C. You can roll back a disk by using a snapshot
- D. You can create an ECS instance from a snapshot
Answer: D
Explanation:
Explanation
You can create a custom image from a snapshot that contains the operating system and data of an ECS instance. Then, you can use the custom image to create multiple instances that have identical application environments.
https://www.alibabacloud.com/help/doc-detail/25391.htm
NEW QUESTION 37
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