[Nov 09, 2021] ACA-Operator Dumps PDF and Test Engine Exam Questions - Lead2PassExam
Verified ACA-Operator exam dumps Q&As with Correct 63 Questions and Answers
NEW QUESTION 19
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: A
Explanation:
Explanation
1-request, 2-load balancer, 3-authentication service, 4-billing service, 5-resource request
NEW QUESTION 20
________________ 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 21
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 22
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 23
Which of these log formats is currently supported by Alibaba Cloud's ActionTrail?
- A. JSON
- B. HTML
- C. Markdown
- D. XML
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/140850.htm
NEW QUESTION 24
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 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. False
- B. True
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/28804.htm
NEW QUESTION 26
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 27
When using Alibaba Cloud CDN, a visitor's request will first be routed to a CDN edge node, and in the event of a cache miss at this edge node, the node will fetch data from the origin site (back-to-source request). Even with this redirection, it is possible for the origin site to see the visitor's real IP address. Which of the following statements about obtaining the visitor's real IP address are correct? (Number of correct answers: 2)
- A. visitor's real IP address is stored in the "X-Forwarded-For" HTTP header. It can be directly obtained via Apache or NGINX logs.
- B. visitor's real IP address can only be obtained by modifying the site or web application.
- C. In Windows, if IIS is used, after installing the "F5XForwardedFor" extension module, the visitor's real IP address can be seen via IIS logs.
- D. You can activate the "record visitor's real IP" function in the Alibaba Cloud CDN console, then you can directly view visitor's IP addresses from the Alibaba Cloud CDN access logs.
Answer: A,C
NEW QUESTION 28
Which of the following steps is NOT mandatory when creating an API through Alibaba Cloud API Gateway?
- A. Define the API backend service
- B. Attach a domain name
- C. Define basic API information
- D. Define API Request parameters
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/29478.htm
NEW QUESTION 29
Tracing Analysis is used to analyze and diagnose performance bottlenecks in a distributed application architecture and make microservice development and diagnostics more efficient.
- A. False
- B. True
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/90277.htm
NEW QUESTION 30
Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?
- A. Alibaba Cloud Certificate Service uses symmetric encryption to save the certificate private key.
- B. Alibaba Cloud uses the built-in functionality of the SSL certificate service to encrypt and store the private key to ensure the security of your certificate's private key
- C. Alibaba Cloud Certificate Service keys are loaded into memory in plaintext format ONLY when needed.
- D. The plaintext of Alibaba Cloud's private key is usually stored on disk and backed up regularly
Answer: C
NEW QUESTION 31
Which of the following is NOT required for SMC (Server Migration Center) to migrate a server to Alibaba Cloud?
- A. The SMC client transfers the source data to an intermediate ECS instance
- B. Import the migration source information to the SMC console
- C. From the SMC console, configure the type of disk image to be generated during the migration
- D. The SMC backend service generates a target Alibaba Cloud image based on the migration source
Answer: C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/127116.htm
NEW QUESTION 32
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 33
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 34
Which command should you run to create the resources described in the Terraform scripts?
- A. terraform init
- B. terraform plan
- C. terraform apply
- D. terraform destroy
Answer: C
Explanation:
Explanation
https://www.terraform.io/docs/cli/commands/apply.html
NEW QUESTION 35
CloudMonitor is for tracking operations on cloud resources.
- A. False
- B. True
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/35170.htm
NEW QUESTION 36
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 37
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