[Mar-2026] H13-921_V1.5 exam torrent Huawei study guide
Use Valid New H13-921_V1.5 Test Notes & H13-921_V1.5 Valid Exam Guide
NEW QUESTION # 69
Which metrics can be displayed in real-time performance?
- A. Slow queries
- B. QPS
- C. DML execution count
- D. Network traffic
Answer: A,B,C,D
NEW QUESTION # 70
Which of the following statements about GaussDB (for MySQL) compatibility are correct?
- A. Syntax compatibility with MySQL 8.0 and functions
- B. Development ecosystem compatibility (e.g., Hibernate, MyBatis, Druid)
- C. Tool compatibility (MySQL WorkBench, Navicat, MySQL Dumper, PL/SQL Developer)
- D. Connector compatibility (MySQL JDBC, ODBC)
Answer: A,B,C,D
NEW QUESTION # 71
When creating a GaussDB (for MySQL) instance, system accounts are automatically created. Which of the following are such accounts?
- A. rdsMetric - monitoring account
- B. rdsAdmin - admin account with superuser privileges
- C. rdsBackup - backup account
- D. rdsRepl - replication account
Answer: A,B,C,D
NEW QUESTION # 72
When executing select * from processlist; to view instance-related information in GaussDB (for MySQL), which database should be used?
- A. information_schema
- B. sys
- C. mysql
- D. performance_schema
Answer: A
NEW QUESTION # 73
Read-only nodes replay WAL and read Page Store to sync with the primary node's memory state, including active transactions and buffer pool.
- A. False
- B. True
Answer: B
NEW QUESTION # 74
Which of the following is NOT a system built-in user in GaussDB (for MySQL)?
- A. rdsBackup
- B. rdsAdmin
- C. rdsMetric
- D. rdsRoot
Answer: D
NEW QUESTION # 75
Which of the following are core functions of the UGO database migration tool?
- A. Migration workload assessment
- B. Target database selection & spec recommendation
- C. Database schema migration
- D. Application SQL migration
Answer: A,B,C,D
NEW QUESTION # 76
Which features does DFV (Data Function Virtualization) provide for elastic scaling?
- A. Linear scaling of capacity and performance
- B. Cross-region replication, cross-AZ disaster recovery
- C. EB-level capacity, billions of objects per device
- D. Thousands of nodes in a single pool
Answer: A,B,C,D
NEW QUESTION # 77
The parameter max_user_connections can limit user connections per instance, and can differ per user.
- A. True
- B. False
Answer: B
NEW QUESTION # 78
Using SHOW PROCESSLIST provides session-related info. Which of the following are common thread statuses?
- A. Creating
- B. Login
- C. Killed
- D. Executing
Answer: A,B,C,D
NEW QUESTION # 79
Which are common performance bottlenecks in database servers?
- A. Improper memory allocation
- B. High CPU usage
- C. Network problems
- D. Slow physical I/O
Answer: A,B,C,D
NEW QUESTION # 80
Under the performance tab, in which module can users view server uptime, connection information, and buffer pool status?
- A. Real-time Performance
- B. Historical Performance
- C. Performance Trend Comparison
- D. Real-time Diagnostics
Answer: A
NEW QUESTION # 81
Huawei Cloud DB Security Audit supports analyzing SQL behavior by risk levels, SQL injection, blacklist statements, and unauthorized operations.
- A. False
- B. True
Answer: B
NEW QUESTION # 82
Which strings can the regex 'x?z|food' (simplified from source) match?
- A. xood
- B. zood
- C. food
- D. z
Answer: A,D
NEW QUESTION # 83
Which type of backup in GaussDB (for MySQL) isretained even afterthe instance is deleted?
- A. Manual backup
- B. Incremental backup
- C. Full backup
- D. Automatic backup
Answer: A
NEW QUESTION # 84
UGO (DB & App Migration) is a professional cloud service for heterogeneous DB structure migration and SQL conversion.
- A. False
- B. True
Answer: B
NEW QUESTION # 85
If an administrator finds that the InnoDB read cache hit rate is low in GaussDB (for MySQL), what should be optimized first?
- A. Increase buffer size
- B. Change network configuration
- C. Change CPU specification
- D. Optimize SQL statements
Answer: A
NEW QUESTION # 86
Slow query logs in GaussDB (for MySQL) are controlled by slow_query_log. 0/OFF disables, 1/ON enables.
- A. False
- B. True
Answer: B
NEW QUESTION # 87
When changing a DB instance password, read-only node passwords must be updated manually.
- A. True
- B. False
Answer: B
NEW QUESTION # 88
In GaussDB (for MySQL), session and connection are the same concept.
- A. True
- B. False
Answer: B
NEW QUESTION # 89
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