[Mar-2026] H13-921_V1.5 Exam Questions and Valid H13-921_V1.5 Dumps PDF
H13-921_V1.5 Brain Dump: A Study Guide with Tips & Tricks for passing Exam
NEW QUESTION # 54
Which of the following statements about PLOG objects in Log Stores are correct?
- A. Uses append-only storage
- B. Identified by a 24-byte unique ID
- C. PLOG size limited to 10GB
- D. Default 3 replicas, strong consistency on writes, read from any replica
Answer: A,B,D
NEW QUESTION # 55
Which of the following is a normal tenant creation process?
- A. Add tenant
- B. Plan resource management
- C. Add parent tenant
- D. Bind roles and tenant
Answer: A,B,C,D
NEW QUESTION # 56
User sessions correspond to user connection threads - one session equals one connection thread.
- A. False
- B. True
Answer: B
NEW QUESTION # 57
In GaussDB (for MySQL), which of the following is offloaded to the storage node for execution?
- A. Transaction
- B. Log Write
- C. SQL Parse
- D. Buffer Pool
Answer: B
NEW QUESTION # 58
GaussDB (for MySQL) allows backup policy configuration in Huawei Cloud Console. Which of the following cannot be modified?
- A. Backup time window
- B. Automatic backup switch
- C. Retention days
- D. Backup cycle
Answer: B
NEW QUESTION # 59
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: A
NEW QUESTION # 60
Which of the following are entities?
- A. Height
- B. Student
- C. Gender
- D. Pilot
Answer: B,D
NEW QUESTION # 61
Which of the following are correct descriptions of read-only nodes?
- A. Adding read-only nodes is fast, independent of data size
- B. Independent CPU/memory, each provides equal read performance
- C. Only metadata is exchanged with primary, minimal overhead
- D. No interaction between read-only nodes, scaling doesn't affect others
Answer: A,B,C,D
NEW QUESTION # 62
The regex function REGEXP_INSTR returns the starting index of a match. If return_option=1, it returns the last position.
- A. False
- B. True
Answer: B
NEW QUESTION # 63
Which factors should be considered when designing database objects?
- A. Normalization design
- B. Field length
- C. Field types
- D. Proper indexing
Answer: A,B,C,D
NEW QUESTION # 64
The parameter innodb_log_buffer_size is used to set the size of the InnoDB log buffer, primarily to improve I
/O performance for writing logs. What is the default size in a 16-core, 64GB GaussDB (for MySQL) instance?
- A. 1GB
- B. 512MB
- C. 128MB
- D. 256MB
Answer: D
NEW QUESTION # 65
Which of the following are GaussDB (for MySQL) thread statuses?
- A. Inserting data: thread inserting data
- B. Creating table: thread creating a table
- C. Killed: thread terminates after receiving kill signal
- D. Executing: thread executing statement
Answer: B,C,D
NEW QUESTION # 66
Trigger events specify the statements that activate triggers. Which are included?
- A. UPDATE
- B. CREATE
- C. DELETE
- D. INSERT
Answer: A,C,D
NEW QUESTION # 67
Frequent UPDATE operations can cause page splits, leading to severe fragmentation.
- A. False
- B. True
Answer: B
NEW QUESTION # 68
Which of the following descriptions about the MEMORY storage engine is incorrect?
- A. MEMORY storage engine uses fixed-length format for data, and does not support BLOB or TEXT types.
- B. Data in MEMORY tables is lost if the mysqld daemon crashes.
- C. MEMORY storage engine stores data in memory to provide fast access for queries and joins.
- D. MEMORY storage engine supports only B-tree indexes and not hash indexes.
Answer: D
NEW QUESTION # 69
When executing stored procedures, which end delimiters are allowed?
- A. Using /
- B. Using ;
- C. Using newline as delimiter
- D. Using / and ;
Answer: A,B
NEW QUESTION # 70
Which window function generates a ranking within groups, where the same value gets the same rank?
- A. PERCENT_RANK()
- B. DENS
- C. RANK()
- D. ROW_NUMBER()
Answer: A
NEW QUESTION # 71
When declaring a user variable, which of the following formats is correct?
- A. ^variable_name
- B. @variable_name
- C. ~variable_name
- D. %variable_name
Answer: B
NEW QUESTION # 72
When executing select * from processlist; to view instance-related information in GaussDB (for MySQL), which database should be used?
- A. performance_schema
- B. sys
- C. information_schema
- D. mysql
Answer: C
NEW QUESTION # 73
The command show [session|global] status defaults to "global".
- A. True
- B. False
Answer: B
NEW QUESTION # 74
GaussDB (for MySQL) is a single-process, multi-threaded database. What are the advantages of threads?
- A. Easier creation/management, no merge overhead
- B. Easier creation/management, no memory allocation overhead
- C. Misbehaving threads won't affect the entire system
- D. Fast context switching
Answer: A,B,C,D
NEW QUESTION # 75
Which of the following operationscannotbe performed on a diagnostic report?
- A. Subscribe
- B. Dump
- C. Download
- D. View
Answer: B
NEW QUESTION # 76
What are the core advantages of GaussDB (for MySQL)?
- A. NoSQL support
- B. High scalability
- C. High reliability
- D. Ultra-high performance
Answer: B,C,D
NEW QUESTION # 77
What are the features of Huawei Cloud's Cloud Audit service?
- A. Audit log recording
- B. Event file encryption
- C. Audit log dumping
- D. Audit log querying
Answer: A,B,C,D
NEW QUESTION # 78
Using the EXPLAIN command in GaussDB (for MySQL), which of the following isnota valid Select_type?
- A. COMPLEX
- B. PRIMARY
- C. SUBQUERY
- D. SIMPLE
Answer: A
NEW QUESTION # 79
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