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Free ACA-Developer Exam Braindumps (page: 4)

Page 3 of 24
PDF with 95 Questions

Which of the following options is not included in Object Storage Service (OSS) object URLs?

  1. Region name
  2. Zone name
  3. Bucket name
  4. Filename

Answer(s): A



What are the benefits of creating indexes on PolarDB? (Number of correct answers: 2)

  1. Improve the query efficiency SELECT statements.
  2. Improve the efficiency of DML operations such as UPDATE.
  3. Improve the efficiency of DDL operations.
  4. Reduce invalid data scanning.

Answer(s): A,D



Which of these are suitable use cases for Alibaba Cloud's MongoDB service? (Number of correct answers: 3)

  1. Applications requiring high OPS, such as logging apps
  2. Scenarios where complex transaction support is required
  3. Applications where JSON is a good choice of storage format
  4. Applications requiring geo-location queries, such as logistics or order status apps

Answer(s): A,B,D



A developer accesses logs in a Log Service Logstore via the API. The error code returned by the server is 404. Which of these could be the cause?

  1. The log project (Project) does not exist
  2. The requested digital signature does not match
  3. Server internal error
  4. Server is busy: please try later

Answer(s): A






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