ACA-Developer ACA Developer Certification exam is a hot Alibaba Cloud certification exam, Exam4Training offers you the latest free online ACA-Developer dumps to practice. You can get online training in the following questions, all these questions are verified by Alibaba Cloud experts. If this exam changed, we will share new update questions.
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 prevent one user from obtaining another’s data.
Which method can be done to meet these requirements?
A . RAM Policy
B . STS authorization
C . Bucket Policy
D . Object Policy
Answer: B
Which of the following programming languages are supported by the Alibaba Cloud SDK? (Number of correct answers: 3)
A . Java
B . Swift
C . PHP
D . Python
E . Bash shell
Answer: A,C,D
Explanation:
https://www.alibabacloud.com/help/doc-detail/74712.htm
When a developer calls the Alibaba Cloud SDK to access Elastic Compute Service (ECS), the following error is returned; RealNameAuthenticationError
What is the possible cause?
A . The ECS instance name violates the ECS service’s naming conventions.
B . The ECS instance name conflicts with other instance names.
C . The user’s Alibaba Cloud account has not passed real name authentication
D . The API callers account and password are not authorized for ECS access.
Answer: D
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 prevent one user from obtaining another’s data.
Which method can be done to meet these requirements?
A . RAM Policy
B . STS authorization
C . Bucket Policy
D . Object Policy
Answer: B
Which of the following are correct, regarding RAM users? (Number of correct answers: 3)
A . RAM users can be created under a single Alibaba Cloud account, corresponding to employees, systems, or applications.
B . 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).
C . 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.
D . 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.
Answer: A,C,D
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 prevent one user from obtaining another’s data.
Which method can be done to meet these requirements?
A . RAM Policy
B . STS authorization
C . Bucket Policy
D . Object Policy
Answer: B
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?
A . Implement ApsaraDB for Redis in Cluster Mode
B . Install Redis on an ECS instance
C . Implement ApsaraDB for Redis in Standard Mode
D . Migrate the ROS database to HBase to save the cache layer
Answer: A
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?
A . HBase
B . OceanBase
C . RDSMariaDB
D . TSDB
Answer: A
What are the advantages of using Elastic Container Instance (ECI) to deploy applications compared with using ECS? (Number of correct answers; 2)
A . Low maintenance, low costs
B . Startup in seconds without the need to reserve resources
C . Less significant visualization layer performance losses
D . Stronger isolation between instances
Answer: A,B
CloudMonitor’s "Event Monitoring" feature provides you with event reporting, query, and alarm functions, Score 2 so that you can collect metrics on your running Alibaba Cloud systems, and receive alerts when something goes wrong.
Which of these is NOT a correct description of the monitoring event types supported by CloudMonitor?
A . For ECS, CloudMonitor supports the collection and reporting of important ECS operating system level events, such as application crashes.
B . For Object Storage Service (OSS), CloudMonitor supports the collection and reporting of bucket upstream and downstream bandwidth which exceeds the flow control threshold or the user-selected reporting threshold.
C . For Server Load Balancer (SLB), CloudMonitor supports the collection and reporting of HTTPS certificate expiration events, for certificates installed on SL
E . For E-MapReduce, CloudMonitor supports the collection and reporting of service component status, cluster creation failure, and timeout events.
Answer: C