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H13-921_V1.5 Exam Dumps - HCIP-GaussDB-OLTP V1.5

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Question # 17

Performance can be measured against a baseline. Ideally, what should a performance baseline include?

A.

Application statistics

B.

Operating system statistics

C.

Network statistics

D.

Database statistics

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Question # 18

When using hints, different scopes apply. Which scope descriptions are correct?

A.

Global: affects entire statement

B.

Query block: affects a specific query block

C.

Table-level: affects a table in a block

D.

Index-level: affects an index in a table

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Question # 19

In GaussDB (for MySQL), session and connection are the same concept.

A.

True

B.

False

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Question # 20

In the failover process of GaussDB (for MySQL), when can the new host officially start providing write operations to clients?

A.

After standby is promoted to primary

B.

After manage-vip is successfully bound

C.

After manage-vip is successfully unbound

D.

After data-vip is successfully bound

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Question # 21

Which statements about distributed transactions are correct?

A.

Support distributed deadlock prevention

B.

Support global transaction info management

C.

Distributed transactions support ACID properties

D.

gs_clean cleans up residual transactions automatically

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Question # 22

Which methods can be used during requirements investigation?

A.

Questionnaire survey

B.

Interviews with business personnel

C.

Sample data collection and analysis

D.

Review “User Requirements Specification”

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Question # 23

Which of the following statements about the VACUUM FULL operation isincorrect?

A.

Space from deleted rows is physically released back to the OS

B.

Allows concurrent operations during execution

C.

Should be run only when disk space usage nears a threshold

D.

Improves all operations based on the table after execution

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Question # 24

Which statements about storage engines are correct?

A.

Different engines provide different mechanisms, indexes, lock levels, etc.

B.

Storage engine is the DBMS’s bottom layer software responsible for creation, queries, updates

C.

Storage engine determines data access mode, directly affecting read/write performance

D.

Each storage engine has unique formats, scenarios, and limitations

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