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ACA Developer Certification
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- Alibaba ACA Developer Certification is for individuals who hold development positions and use Alibaba Cloud products to manage and maintain Alibaba Cloud-based applications. If you are the one, you can choose ACA-Developer exam dumps questions as the preparation tool. DumpsBase provides an appropriate ACA-Developer exam dumps with all the information that can help a person to get the ACA Developer Certification exam cleared.
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- During the process of backing up an RDS database, a developer found that the backup failed.
- What might cause this to happen? o The database instance is not stopped o DDL operations were performed during the backup o
DML operations were performed during the backup DCL operations were performed during the backup
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- In order to have your applications interact with Alibaba Cloud RabbitMQ, you need to create related MQ resources first.
- Which of the following resources must be created? (Number of correct answers: 3) o Vhost o Excha ng e Queue o Bro ker To pic
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- Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3) o Through the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud o API or use the web console A STS request consists of an access address, communication protocol, request method, request parameters and character encoding o 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 The STS service supports the use of both HTTP and HTTPS o protocols
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o The ECS instance name violates the ECS service's namingconventions. o The ECS instance name conflicts with other instance names. o The user's Alibaba Cloud account has not passed real name authentication o The API callers account and password are not authorized for o ECS access.
- Question was not answered
- Serverless Workflow allows you to orchestrate distributed tasks in sequence, branch, and parallel modes, and ensure that tasks are reliably coordinated according to your workflow logic.
- Which of the following service integration modes is not supported by Serverless Workflow? o Request response mode Synchronization mode Asynchronous mode Waiting for callback mode
- Question was not answered
- It should be possible to process video in parallel at scale, to ensure that videos are preprocessed in a reasonable amount of time.
- Which of the following Alibaba Cloud applications can be combined to provide a low operation and maintenance burden and relatively low operating costs? (Number of correct answers: o Serverless Workflow Function Compute o Log Service o Elastic Compute Service (ECS) Server Load Balancer (SLB)
- Question was not answered
- A Developer is asked to implement a caching layer in front of RDS. Cached content is expensive to regenerate in case of service failure.
- Which implementation below would work while maintaining maximum uptime? o Implement ApsaraDB for Redis in Cluster Mode Install Redis on an ECS instance o Implement ApsaraDB for Redis in Standard Mode o Migrate the ROS database to HBase to save the cache layer Question was not answered 1. You can use Alibaba Cloud Data transmission service (DTS) or the open source tool Redis-shake to migrate and synchronize data from a local Redis instance to an Alibaba Cloud Redis instance. What is one feature which DTS has but Redis-shake does not? o Full data migration Incremental data migration One-way data synchronizationTwo - way data synchronization Question was not answered 2. Which of the following options is not included in Object Storage Service (OSS) object URLs? Region name Zone name Bucket name Filename Question was not answered
selected reporting threshold. For Server Load Balancer (SLB), CloudMonitor supports the collection and reporting of HTTPS certificate expiration events, for certificates installed on SL For E-MapReduce, CloudMonitor supports the collection and reporting of service component status, cluster creation failure, and timeout events. Question was not answered
7. What are the advantages of using Elastic Container Instance (ECI) to deploy applications compared with using ECS? (Number of correct answers; 2) Low maintenance, low costs Startup in seconds without the need to reserve resources Less significant visualization layer performance losses Stronger isolation between instances Question was not answered 8. 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. Question was not answered 9. Which of the following statements are correct, with regard to Alibaba Cloud Log Service? (Number of correct answers: 3)
As an agent for collecting logs, Logtail can collect logs from existing system log files in a non-intrusive manner The Log Service frontend service adopts an LVS + NGINX Architecture The Logstore backend service is deployed on a single machine to complete the real-time persistence, indexing, query and delivery of Logstore data to MaxCompute Each log written to the Log Service backend will be saved in triplicate (across three separate physical servers) Question was not answered
10. A mobile application developer intends to use Alibaba Cloud Object Storage Service (OSS) to store the end user data for their app, and to ensure data isolation between each user of the app, to
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). Question was not answered
13. Assume that a company uses ApsaraDB for PolarDB. The company commonly queries users based on their basic information, including: addresses, company names, and ID numbers. In this scenario, what is the best practice for creating a database index (or indexes)? Create a b-tree index on each column to be searched. Create a hash index on each column to be searched. Create a gin index for multiple fields. Create a gist index for multiple fields. Question was not answered 14. On which operating systems can you install Alibaba Cloud command line tools? (Number of correct answers: 3) Windows Linux macOS Android Question was not answered 15. A development team currently supports an application that is designed to be deployed on a single server's local memory As part of migrating to Alibaba Cloud, the team needs to use Auto Scaling, and must therefore move their game state data off of their servers, so that they can automatically scale up and down without losing game data. Where should the team store these game results to best allow for consistent results without impacting performance? OSS RDS
Redis Log Service Question was not answered
16. To meet data analytics requirements on large datasets, which of these databases can meet the demand for structured and semi- structured storage for almost all types of data, albeit with limited support for strong transactions? HBase OceanBase RDSMariaDB TSDB Question was not answered 17. Which of the following programming languages are supported by the Alibaba Cloud SDK? (Number of correct answers: 3) Java Swift PHP Python Bash shell Question was not answered 18. Company A has a large number of files store in Alibaba Cloud OSS that need to be deleted (numbering in the tens of thousands). What is the fastest, easiest way to delete these files? Manually delete them one by one Configure a life cycle rule that matches the entire bucket, and delete all files after one day Call the API from a script, deleting files in batches Directly delete the bucket Question was not answered
There is not enough space in the Logstore partition The target partition in the Logstore is not specified Question was not answered
22. Which of the following operations can be performed through Log Service sAPI? (Number of correct answers: 3) Collect logs based on Logtail configuration and Logtail machine group information Create a Logstore, write and read logs to the Logstore Access control for different users Deliver logs to OSS for storage and analysis
