Free ACA-Database Exam Braindumps (page: 6)

Page 6 of 21

Which of the following is not a component of the PolarDB-0 architecture in Apsara Stack?

  1. FC Switch
  2. SAN
  3. Proxy
  4. RDMA

Answer(s): B



PolarDB for MySQL archive databases use log-structured merge-trees (LSM trees) and the Zstandard (ZSTD) data compression algorithm to increase the data compression ratio. How much storage can be saved, at most?

  1. 40%
  2. 50%
  3. 60%
  4. 70%

Answer(s): D



If a database exception occurs in a PolarDB cluster because important data is deleted by mistake,

how i can data be restored?

  1. Level-2 backup + Redo log
  2. Level 1 backup + Redo log
  3. Level-2 backup
  4. Level-1 backup

Answer(s): A



Which type of the following logs is used to synchronize data between primary and secondary databases in RDS for MySQL?

  1. Redo log
  2. Rollback log
  3. Binary log
  4. Error log

Answer(s): C



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dodol commented on November 12, 2024
ok real exam
Anonymous
upvote