Alibaba ACA-Developer Exam Questions Answers

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Page: 1 / 19
Total Questions: 95

Questions & Answers PDF

• Question 1

  

  Which of the following configurations cannot improve the stability, reliability or availability of an Alibaba Cloud Scaling Group? (Number of correct answers: 3)

  • Select multiple VPCs when creating the scaling group
    
  • When creating the scaling group, select multiple Vswitches in multiple Zone within a Region
    
  • Choose a variety of different ECS types when creating your Scaling Configuration
    
  • In the process of creating a Scaling Group, associate multiple Server Load Balancers
    

  Reveal Answer Answer: 1,,3,,4 Next Question

• Question 2

  

  Which of the following is NOT a feature of Alibaba Cloud's Cassandra database service?

  • Centerless distributed architecture
    
  • Supports both narrow and wide tables, providing flexible schema functions
    
  • Cluster storage, strong expansion of read and write capabilities
    
  • Enterprise-level capabilities such as disaster tolerance, backup and recovery, security, and monitoring across data centers
    

  Reveal Answer Answer: 2 Next Question

• Question 3

  

  Which of the following are correct, regarding RAM users? (Number of correct answers: 3)

  • RAM users can be created under a single Alibaba Cloud account, corresponding to employees, systems, or applications.
    
  • RAM users do not 'own' the resources that they create (those belong to the Alibaba Cloud account itself), and RAM users cannot generate and pay their own individual bills (costs accrue to and are billed to the master Alibaba Cloud account).
    
  • RAM users belong to an Alibaba Cloud account, but they can also operate as independent accounts with their own private resources, not visible to the primary Alibaba Cloud account.
    
  • RAM users must be authorized by the Alibaba Cloud account to log in to the console or use the API to manage the resources owned by the Alibaba Cloud account.
    

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• Question 4

  

  Which of the following are types of backend services that API Gateway supports? (Number of correct answers: 3)

  • HTTP(s) service
    
  • CloudMonitor Service
    
  • Resources In a VPC
    
  • Function Compute
    
  • Log service
    

  Reveal Answer Answer: 1,,2,,3 Next Question

• Question 5

  

  When versioning is enabled for an OSS Bucket, previous versions of objects will be retained, using storage space and incurring additional costs. How can you save space and reduce costs, while retaining some of the benefits of object versioning?

  • Avoid using version management.
    
  • Use the Function Compute Service to regularly check for and delete old versions of objects.
    
  • Use OSS s built in lifecycle management capabilities to automatically delete old versions of objects after a set time.
    
  • Use OSS's built in lifecycle management capabilities to move old versions of objects to Archival Storage.
    

  Reveal Answer Answer: 3 Next Question

• Question 6

  

  Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)

  • DMS (Data Management Service)
    
  • aliyun-cll
    
  • Redis-cIl
    
  • Sentinel
    

  Reveal Answer Answer: 3,,4 Next Question

• Question 7

  

  A company has some new content that needs to be promoted (such as new features, new activities, new games, or new articles). In order to achieve the overall promotion goal, the operating staff will select various channels for promotion (including standard HTML/HTML5 (desktop), iOS, and Android). You are using Alibaba Cloud's Log Service: in order to ascertain the effectiveness of content promotion accurately and in real time, which log collection method should you use, as a developer?

  • Syslog
    
  • Web Tracking
    
  • Kafka
    
  • Logslash
    

  Reveal Answer Answer: 1 Next Question

• Question 8

  

  Alibaba Cloud Log Service is a Pay-As-You-Go service. The billing unit is 7 day, and the configuration can be adjusted at any time: fees are charged according to actual usage. Which of the following are the main charges for Log Service? (Number of correct answers: 3)

  • Read and write traffic
    
  • Storage capacity
    
  • Index traffic after index configuration
    
  • Query analysis
    

  Reveal Answer Answer: 1,,2,,3 Next Question

• Question 9

  

  When connecting to the Alibaba Cloud RDS database, in order to improve the completeness and integrity of the connection, you can enable SSL encryption and install an SSL CA certificate for the required application service. Which of the following statements are correct? (Number of correct answers: 3)

  • Due to the way in which SSL encryption is implemented, enabling SSL encryption will significantly increase the CPU usage rate. Enable SSL encryption when there is an encryption requirement for the external network link. The intranet link is relatively safe, and generally no link encryption is required.
    
  • If the RDS instance is a multi-node instance, the system will trigger the active/standby switch after the SSL service is disabled.
    
  • When using read/write splitting, you can also enable SSL encryption to improve the security of the connection.
    
  • It is discovered that an Alibaba Cloud RDS SSL certificate is about to expire, and the validity period needs to be updated, requiring that the certificate be updated, then reinstalled. This will restart the RDS instance.
    

  Reveal Answer Answer: 1,,2,,3 Next Question

• Question 10

  

  If a user finds that the Content Delivery Network (CDN) cache hit rate is low, what could be the reason? (Number of correct answers: 3)

  • When the website has low traffic, the CDN will receive fewer requests and this will result in a lower cache hit rate.
    
  • Insufficient bandwidth was selected when enabling the CDN service, causing the service capacity reach its limit too early.
    
  • HTTP Header settings may cause cache misses.
    
  • The origin site has a large number of dynamic resources.
    
  • Cache configuration is inappropriate (ex. overly short Cache Expiry Time for popular files).
    

  Reveal Answer Answer: 1,,2,,5 Next Question

Page: 1 / 19
Total Questions: 95

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