Pass Alibaba Cloud ACA-Operator exam questions - convert Test Engine to PDF
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NEW QUESTION 35
Which of the following methods can NOT be used for operating Alibaba Cloud Elastic Compute Service (ECS) instances?
- A. Console
- B. CLI
- C. CloudFormation
- D. SDK
Answer: C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/25422.htm
NEW QUESTION 36
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 CreateSecurityGroup API call was not made
- B. The ECS was not restarted after being created
- C. The CreateDisk API call was not made
- D. The developer did not call AllocatePublicIpAdress (an additional API call), which is needed to assign a public IP
Answer: D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/25544.htm
NEW QUESTION 37
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. The user uses the master key created on KMS to encrypt and decrypt the generated data key.
- B. 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).
- C. The master key generated by KMS is also kept by the user.
- D. Developers can generate a plaintext data key and a ciphertext data key by calling the GenerateDataKey interface.
Answer: A,B,D
NEW QUESTION 38
A system operator can tag resources for costing and billing purposes.
- A. False
- B. True
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/25477.htm
NEW QUESTION 39
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 and the unhealthy ECS instance is shutted down
- B. Requests are not forwarded to the ECS instances and you get back a 400 error
- C. Requests are not forwarded to the ECS instances and you get back a 500 error
- D. Requests are forwarded to other normal ECS instances. When the faulty ECS instance becomes normal, SLB forwards requests to the ECS instance again
Answer: D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/27702.htm
NEW QUESTION 40
Which of the following Alibaba Cloud services offers a software-defined wide area network (SD-WAN) solution based on cloud-native technologies?
- A. Content Delivery Network (CDN)
- B. NAT Gateway
- C. Smart Access Gateway (SAG)
- D. VPN Gateway
Answer: C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/69227.htm
NEW QUESTION 41
________________ is a fully-managed event-driven computing service that allows you to run code in an elastic and reliable way?
- A. Elastic Compute Service (ECS)
- B. Batch Compute
- C. Function Compute
- D. Serverless Workflow
Answer: C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/52895.htm
NEW QUESTION 42
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 serverless site using Function Compute
- B. Quickly build a small e-commerce website
- C. Quickly build a personal blog website
- D. Quickly build a personal, learning, or test environment
- E. Set up a NoSQL database service
Answer: B,C,D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/58620.htm
NEW QUESTION 43
Which command is used to get the Docker daemon information?
- A. docker pull
- B. docker version
- C. docker image
- D. docker info
Answer: D
Explanation:
Explanation
https://docs.docker.com/engine/reference/commandline/info/
NEW QUESTION 44
Which of these are important concepts in Terraform's configuration language, HCL? (Number of correct answers: 3)
- A. Service Mesh
- B. Provider
- C. Variable
- D. Resource
Answer: B,C,D
NEW QUESTION 45
Your company decided to replicate the whole cloud environment in another region and use it as a cross-region failover in disaster recovery scenarios.
Your current environment includes Elastic Compute Service (ECS) instances, Server Load Balancer (SLB) instances and Relational Database Service (RDS) instances. Which of the following statements is correct?
- A. You can provision multiple ECS instances in multiple regions, thereby leveraging automatic high availability across regions
- B. You can use DNS to resolve domain names to the IP addresses of multiple ECS instances running in different regions
- C. You can provision multiple SLB instances in multiple regions, thereby leveraging automatic high availability across regions
- D. You can use DNS to resolve domain names to the IP addresses of multiple SLB instances running in different regions
Answer: D
Explanation:
Explanation
https://cloudacademy.com/course/alibaba-server-load-balancer-1066/alibabas-high-availability/
NEW QUESTION 46
PolarDB supports three engines: MySQL, PostgreSQL and Oracle.
- A. False
- B. True
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/58764.htm
NEW QUESTION 47
Which of the following data volume types is not supported by Elastic Container Instance (ECI)?
- A. FixedVolume
- B. EmptyDir
- C. NFS
- D. ConfigFile
Answer: A
Explanation:
Explanation
FlexVolume is the correct one
https://www.alibabacloud.com/help/doc-detail/90672.htm
NEW QUESTION 48
A Developer is creating a Function Compute function. This function requires around 1 GB of temporary storage for files while executing. These files will not be needed after the function is completed for a fixed period. How can this developer MOST efficiently handle the temporary files?
- A. Store the files in Cloud Disk and delete the files when Function Compute function call completes.
- B. Copy the files to an OSS bucket with a lifecycle policy configured to delete the files automatically.
- C. Store the files in the /tmp directory on a temporary ECS instance, and delete the files at when the Function Compute function call completes.
- D. Copy the files to NFS and delete the files when the Function Compute function call completes.
Answer: B
NEW QUESTION 49
Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)
- A. DMS (Data Management Service)
- B. Redis-cli
- C. Sentinel
- D. Aliyun-cli
Answer: A,B
NEW QUESTION 50
Which of these Alibaba Cloud services are used for security (either credentials management, logging, or auditing?) (Number of correct answers: 3)
- A. Table store
- B. ActionTrail
- C. Key Management Service (KMS)
- D. Log Service
Answer: B,C,D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/27280.htm
NEW QUESTION 51
Which of the following engines is NOT supported by PolarDB?
- A. Oracle
- B. MySQLo
- C. PostgreSQL
- D. MongoDB
Answer: D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/58764.htm
NEW QUESTION 52
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. False
- B. True
Answer: B
NEW QUESTION 53
Which database utility is suitable for automate perception, healing, optimization, O&M, and security assurance for databases?
- A. DBS
- B. DTS
- C. DAS
- D. DMS
Answer: C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/64851.htm
NEW QUESTION 54
A developer is making the ModifyDBInstanceSpec API call to change the specifications of an RDS instance, but the operation fails. Why could this be? (Number of correct answers: 3)
- A. The targeted RDS instance is a disaster recovery instance
- B. The instance has a backup task being executed
- C. No instance type (specification) was included in the request parameters
- D. The instance is in the "running" state
Answer: A,B,C
NEW QUESTION 55
You need to log all actions taken by users of your Alibaba Cloud account, whether via the command line tools or the web console. Which Alibaba Cloud product can you use to create a log of user operations?
- A. CloudMonitor
- B. ActionTrail
- C. Cloud Configo
- D. Resource Group
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/28804.htm
NEW QUESTION 56
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