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Huawei H13-921_V1.5 Exam Syllabus Topics:

Huawei HCIP-GaussDB-OLTP V1.5 Sample Questions:

Question 1

Which window function can be used to generate group-based ranks with the same rank for identical values?

A. DENSE_RANK()
B. RANK()
C. ROW_NUMBER()
D. NTLITE()

Question 2

System tables and views record metadata for DB objects and users. Which system table or viewcannotbe used to query user information?

A. pg_auth_members
B. pg_authid
C. pg_roles
D. pg_user

Question 3

The delay between read-only and primary nodes mainly comes from which of the following?

A. Read-only nodes deleting WAL
B. Small data sync between hosts
C. Read-only nodes reading logs
D. Read-only nodes replaying WAL

Question 4

If read hit ratio is below 99%, lowering innodb_buffer_pool_size can improve cache hit rate.

A. True
B. False

Question 5

Which statements about slow query logs are correct?

A. Logs are written after execution and all locks are released
B. Record order may differ from execution order
C. Slow logs record SQL affecting performance for later tuning
D. Time waiting for initial table locks is excluded

Solutions: