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Free ACA-Operator Exam Braindumps (page: 2)

Page 1 of 16
PDF with 62 Questions

Which command is used to get the Docker daemon information?

  1. docker info
  2. docker version
  3. docker pull
  4. docker image

Answer(s): A


Reference:

https://docs.docker.com/engine/reference/commandline/info/



When you use SQL statements to access tables in a database without an index configured, a full table scan will be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data and consume a lot of the database's resources. Which of the following options are best practices when creating database indexes? (Number of correct answers: 3)

  1. Add an index to a field that is frequently queried but does not frequently perform add, delete, or modify operations.
  2. Applies indices to fields to contain many records.
  3. A table should not contaiiAiore than 6 indexed fields.
  4. Apply indexing to fields of fixed length (preferably not long fields).
  5. Adhere to the rightmost prefix principle when using composite indexes

Answer(s): A,C,D



Which of the following steps is NOT mandatory when creating an API through Alibaba Cloud API Gateway?

  1. Define basic API information
  2. Attach a domain name
  3. Define API Request parameters
  4. Define the API backend service

Answer(s): B


Reference:

https://www.alibabacloud.com/help/doc-detail/29478.htm



Which of the following statements about ECS Snapshot is NOT correct?

  1. You can manually create snapshots
  2. You can create automatic snapshots
  3. You can roll back a disk by using a snapshot
  4. You can create an ECS instance from a snapshot

Answer(s): D

Explanation:

You can create a custom image from a snapshot that contains the operating system and data of an ECS instance. Then, you can use the custom image to create multiple instances that have identical application environments.


Reference:

https://www.alibabacloud.com/help/doc-detail/25391.htm






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