[Mar-2026] H13-921_V1.5 Questions - Truly Beneficial For Your Huawei Exam
Download Huawei H13-921_V1.5 Sample Questions
NEW QUESTION # 48
In GaussDB (for MySQL), session and connection are the same concept.
- A. True
- B. False
Answer: B
NEW QUESTION # 49
GaussDB (for MySQL) uses snapshots for both full and incremental backups, with second-level creation efficiency.
- A. True
- B. False
Answer: B
NEW QUESTION # 50
Which roles exist in DAS Enterprise Edition?
- A. DBA
- B. System Administrator
- C. Business Owner role
- D. Regular User
Answer: A,B,D
NEW QUESTION # 51
MD5(str) returns a 128-bit checksum as a 40-character hex string.
- A. True
- B. False
Answer: B
NEW QUESTION # 52
In DRS, backup migration means reading local backup files and restoring to target DB.
- A. True
- B. False
Answer: B
NEW QUESTION # 53
The Com_insert and similar Com_xx parameters are used to monitor the number of different operations executed in a database instance. Which of the following commands correctly retrieves this parameter?
- A. "show status Com_insert"
- B. "show variables like 'Com_insert'"
- C. show variables Cominsert
- D. "Show status like 'Com_insert';"
Answer: D
NEW QUESTION # 54
In GaussDB (for MySQL), user variables are session variables that can be saved and shared across sessions.
- A. True
- B. False
Answer: B
NEW QUESTION # 55
In GaussDB (for MySQL), which of the following is offloaded to the storage node for execution?
- A. Buffer Pool
- B. SQL Parse
- C. Log Write
- D. Transaction
Answer: C
NEW QUESTION # 56
The Data Management Service (DAS) is used for logging into and operating cloud databases on Huawei Cloud. Which of the following versions isnotprovided by DAS?
- A. Cloud DB
- B. For DBAs and O&M personnel
- C. Standard Edition: for developers
- D. Enterprise Edition: for enterprise users
- E. Professional Edition: for business personnel
Answer: E
NEW QUESTION # 57
When performance drops sharply, Cloud DBA's SQL module can quickly identify problematic SQL for diagnosis.
- A. True
- B. False
Answer: A
NEW QUESTION # 58
The frequency of flushing logs from the buffer to disk is related to the parameter innodb_flush_log_at_trx_commit. Which value means "write log buffer data to log file and flush to disk every second"?
- A. 0
- B. 1
- C. 2
Answer: C
NEW QUESTION # 59
Which statements about Schema are correct?
- A. Forms a namespace to avoid naming conflicts
- B. Search order is based on creation time
- C. Equivalent to user, separates object ownership
- D. Collection of DB objects, logical grouping for management
Answer: A,D
NEW QUESTION # 60
Which statements about SQL execution process are correct?
- A. Executor: operates engine, returns results
- B. Parser: generates execution plan, selects indexes
- C. Connector: manages connections, verifies permissions
- D. Storage engine: stores data, provides read/write interface
Answer: A,C,D
NEW QUESTION # 61
Which steps belong to the overall installation process?
- A. Pre-installation preparation
- B. Post-installation check
- C. System configuration
- D. Software installation and deployment
Answer: A,B,C,D
NEW QUESTION # 62
When changing a DB instance password, read-only node passwords must be updated manually.
- A. True
- B. False
Answer: B
NEW QUESTION # 63
GaussDB (for MySQL) supports compute node bidirectional scaling: vertical (1 write, 15 reads) and horizontal (elastic online scaling, pay-as-you-go).
- A. True
- B. False
Answer: B
NEW QUESTION # 64
What are the features of Huawei Cloud's Cloud Audit service?
- A. Audit log recording
- B. Event file encryption
- C. Audit log querying
- D. Audit log dumping
Answer: A,B,C,D
NEW QUESTION # 65
Which of the following is NOT a function included in user behavior audit?
- A. Behavior clues: support quick analysis across multiple dimensions
- B. Session clues: analysis from time, DB user, client, etc.
- C. Slow SQL clues: support for user slow SQL queries and optimization advice
- D. Statement clues: various filters like time, risk level, IP, etc.
Answer: C
NEW QUESTION # 66
Which of the following methods cannot be used to view a table's fragmentation rate?
- A. Use the "Space" function in Cloud DBA to clearly view the fragmentation rate
- B. Query performance_schema.TABLES and check the data_free value
- C. Use the command SHOW TABLE STATUS LIKE 'table_name' and check the data_free value
- D. Query information_schema.TABLES and check the data_free value
Answer: B
NEW QUESTION # 67
Which of the following is NOT a system built-in user in GaussDB (for MySQL)?
- A. rdsBackup
- B. rdsRoot
- C. rdsAdmin
- D. rdsMetric
Answer: B
NEW QUESTION # 68
Using the EXPLAIN command in GaussDB (for MySQL), which of the following isnota valid Select_type?
- A. SUBQUERY
- B. PRIMARY
- C. SIMPLE
- D. COMPLEX
Answer: D
NEW QUESTION # 69
Which factors should be considered when designing database objects?
- A. Normalization design
- B. Proper indexing
- C. Field types
- D. Field length
Answer: A,B,C,D
NEW QUESTION # 70
GaussDB (for MySQL) has a strong access control system. Which permissions cannot currently be modified?
- A. FILE
- B. TRIGGER
- C. SUPER
- D. CREATE TABLESPACE
Answer: A,C
NEW QUESTION # 71
GaussDB (for MySQL) automatically backs up incremental changes every 5 minutes after the last backup.
- A. True
- B. False
Answer: A
NEW QUESTION # 72
Which of the following is the correct sequence for connecting to a GaussDB (for MySQL) instance via the internet?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 73
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