[Sep 29, 2021] ACA-Operator Ultimate Study Guide - TroytecDumps
Ultimate Guide to Prepare ACA-Operator Certification Exam for Alibaba System Operator in 2021
NEW QUESTION 12
Which of the following data volume types is not supported by Elastic Container Instance (ECI)?
- A. NFS
- B. FixedVolume
- C. EmptyDir
- D. ConfigFile
Answer: B
Explanation:
Explanation
FlexVolume is the correct one
https://www.alibabacloud.com/help/doc-detail/90672.htm
NEW QUESTION 13
Which of the following steps is NOT mandatory when creating an API through Alibaba Cloud API Gateway?
- A. Attach a domain name
- B. Define API Request parameters
- C. Define basic API information
- D. Define the API backend service
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/29478.htm
NEW QUESTION 14
Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)
- A. Redis-cli
- B. Sentinel
- C. Aliyun-cli
- D. DMS (Data Management Service)
Answer: A,D
NEW QUESTION 15
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 16
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. Set up a NoSQL database service
- B. Quickly build a personal, learning, or test environment
- C. Quickly build a personal blog website
- D. Quickly build serverless site using Function Compute
- E. Quickly build a small e-commerce website
Answer: B,C,E
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/58620.htm
NEW QUESTION 17
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 SLB instances in multiple regions, thereby leveraging automatic high availability across regions
- B. You can provision multiple ECS instances in multiple regions, thereby leveraging automatic high availability across regions
- C. You can use DNS to resolve domain names to the IP addresses of multiple SLB instances running in different regions
- D. You can use DNS to resolve domain names to the IP addresses of multiple ECS instances running in different regions
Answer: C
Explanation:
Explanation
https://cloudacademy.com/course/alibaba-server-load-balancer-1066/alibabas-high-availability/
NEW QUESTION 18
Which command should you run to create the resources described in the Terraform scripts?
- A. terraform destroy
- B. terraform init
- C. terraform apply
- D. terraform plan
Answer: C
Explanation:
Explanation
https://www.terraform.io/docs/cli/commands/apply.html
NEW QUESTION 19
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. Developers can generate a plaintext data key and a ciphertext data key by calling the GenerateDataKey interface.
- 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. The user uses the master key created on KMS to encrypt and decrypt the generated data key.
Answer: A,B,D
NEW QUESTION 20
Which configuration language does Terraform support?
- A. YAML
- B. HCL
- C. XML
- D. Python
Answer: B
Explanation:
Explanation
https://www.terraform.io/docs/language/syntax/configuration.html
NEW QUESTION 21
Which Alibaba Cloud service is an automated operations and maintenance (O&M) service to execute O&M tasks?
- A. Resource Orchestration Service (ROS)
- B. Resource Access Management (RAM)
- C. Maintenance Orchestration Service (MOS)
- D. Operation Orchestration Service (OOS)
Answer: D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/120556.htm
NEW QUESTION 22
Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?
- A. The plaintext of Alibaba Cloud's private key is usually stored on disk and backed up regularly
- B. Alibaba Cloud Certificate Service keys are loaded into memory in plaintext format ONLY when needed.
- C. 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
- D. Alibaba Cloud Certificate Service uses symmetric encryption to save the certificate private key.
Answer: B
NEW QUESTION 23
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 24
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 25
Which of the following services is used to establish private network connections between virtual private clouds (VPCs) in different regions, or between VPCs and data centers?
- A. VPN Gateway
- B. CEN (Cloud Enterprise Network)
- C. Express Connect
- D. NAT Gateway
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/59870.htm
NEW QUESTION 26
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. Cloud Configo
- C. ActionTrail
- D. Resource Group
Answer: C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/28804.htm
NEW QUESTION 27
Which of these metrics are collected by CloudMonitor's Host Monitoring function? (Number of correct answers: 3)
- A. ECS network I/O
- B. Running processes on the ECS instance
- C. Storage space used by OSS buckets
- D. CPU status of the ECS instance
Answer: A,B,D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/35170.htm
NEW QUESTION 28
As the system administrator of a multinational company, you are responsible for the accounts and resources management on the cloud. Which of the following solutions are suitable for your company's IT Governance? (Number of correct answers: 3)
- A. Use Cloud Config and Action Trail for compliance and audit
- B. Stop using Action Trail and Cloud Config to save the storage cost
- C. Use CEN for interconnecting different networks globally, use shared VPC to share services between different organizations
- D. Use role-based SSO for Identities access, use resource directory to manage the resources in shared service account and master account
- E. Use one single VPC for all the resources to have the best performance
Answer: A,C,D
Explanation:
Explanation
https://www.alibabacloud.com/solutions/it-governance
NEW QUESTION 29
Which of the following engines is NOT supported by PolarDB?
- A. Oracle
- B. MongoDB
- C. PostgreSQL
- D. MySQLo
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/58764.htm
NEW QUESTION 30
Alibaba Cloud RocketMQ is typically used in scenarios where message publishing and consumption performance requirements are high. Which of the following are supported message types in Alibaba Cloud RocketMQ? (Number of correct answers: 3)
- A. Batched message
- B. Scheduled message
- C. Retried message
- D. Ordered message
- E. Transactional message
Answer: B,D,E
NEW QUESTION 31
Which of these Alibaba Cloud services are used for security (either credentials management, logging, or auditing?) (Number of correct answers: 3)
- A. Key Management Service (KMS)
- B. Log Service
- C. ActionTrail
- D. Table store
Answer: A,B,C
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/27280.htm
NEW QUESTION 32
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