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Free Huawei H13-921_V1.5 Practice Exam with Questions & Answers | Set: 3

Questions 21

Which of the following descriptions about Hint optimization strategies isincorrect?

Options:
A.

JOIN_PREFIX: uses the specified table order as thelastjoin order

B.

JOIN_FIXED_ORDER: uses the FROM clause's table order as the join order

C.

JOIN_ORDER: uses the specified table order as the join order

D.

MAX_EXECUTION_TIME: limits the statement execution time

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Questions 22

In GaussDB (for MySQL), which parameter is used to control the maximum idle time for interactive connections?

Options:
A.

wait_timeout

B.

max_connections

C.

interactive_timeout

D.

connect_timeout

Questions 23

In Cloud DBA’s performance module, “Slow SQL” includes which functions?

Options:
A.

Slow log description

B.

Slow log trend

C.

Slow log statistics

D.

Slow log details

Questions 24

To elastically scale read capacity and reduce GaussDB (for MySQL) pressure, read-only nodes can be created. Which statements are correct?

Options:
A.

One cluster supports up to 15 read-only nodes

B.

Support data migration to read-only nodes

C.

Support creating and deleting databases

D.

No account creation allowed on read-only nodes (must be on primary)

Questions 25

Which regex pattern is used to match one or more ‘h’ characters?

Options:
A.

h+

B.

h-

C.

h*

D.

h

Questions 26

Which of the following isnotan option of the EXPLAIN command?

Options:
A.

Performance

B.

Pretty

C.

Analyze

D.

Verbose

Questions 27

Which type of tree does the InnoDB engine use by default to store index information?

Options:
A.

B-Tree

B.

Binary Tree

C.

Balanced Binary Tree

D.

B+ Tree

Questions 28

A database administrator received a "cannot connect" error. Diagnosis revealed that a new business caused client connections to exceed the preset limit. Which parameter should be adjusted to fix the error?

Options:
A.

max_connect_errors

B.

max_connections

C.

max_user_connections

D.

connect_timeout

Questions 29

Which roles exist in DAS Enterprise Edition?

Options:
A.

System Administrator

B.

DBA

C.

Business Owner role

D.

Regular User

Questions 30

Object Storage Service (OBS) is a massive, secure, reliable, and low-cost storage service.

Options:
A.

True

B.

False

Exam Code: H13-921_V1.5
Certification Provider: Huawei
Exam Name: HCIP-GaussDB-OLTP V1.5
Last Update: Oct 5, 2025
Questions: 214

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