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H13-921_V1.5 HCIP-GaussDB-OLTP V1.5 is now Stable and With Pass Result | Test Your Knowledge for Free

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H13-921_V1.5 Practice Questions

HCIP-GaussDB-OLTP V1.5

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Total Questions : 214

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Question # 51

GaussDB (for MySQL) supports compute-storage separation.

Options:

A.  

True

B.  

False

Discussion 0
Question # 52

Which methods can be used to find fragmented tables in GaussDB (for MySQL)?

Options:

A.  

Cloud DBA “Space” function

B.  

SHOW TABLES directly

C.  

Query information_schema.TABLES

D.  

SHOW TABLE STATUS LIKE 'table_name' and check Data_free

Discussion 0
Question # 53

The frequency of flushing the log from buffer to disk is related to the parameter innodb_flush_log_at_trx_commit. If you want to flush the log buffer and write it to disk every time a transaction is committed, what should the parameter value be?

Options:

A.  

1

B.  

2

C.  

3

Discussion 0
Question # 54

Which of the following are common SQL tuning practices?

Options:

A.  

Always use SELECT statements

B.  

Minimize use of GROUP BY

C.  

Use LIMIT when querying a single record

D.  

For large data inserts, drop indexes and constraints first

Discussion 0
Question # 55

Which of the following methods cannot be used to view a table's fragmentation rate?

Options:

A.  

Use the “Space” function in Cloud DBA to clearly view the fragmentation rate

B.  

Query information_schema.TABLES and check the data_free value

C.  

Query performance_schema.TABLES and check the data_free value

D.  

Use the command SHOW TABLE STATUS LIKE 'table_name' and check the data_free value

Discussion 0
Question # 56

Compared with physical backup, logical backup has the advantage of faster backup and recovery.

Options:

A.  

True

B.  

False

Discussion 0
Question # 57

Which of the following window functions are supported by GaussDB (for MySQL)?

Options:

A.  

LEAD()

B.  

MIDDLE_VALUE()

C.  

FIRST_VALUE()

D.  

LAG()

Discussion 0
Question # 58

User sessions correspond to user connection threads — one session equals one connection thread.

Options:

A.  

True

B.  

False

Discussion 0
Question # 59

In GaussDB (for MySQL), parameters can show whether the workload is mainly inserts/updates or queries, and the approximate SQL type ratio.

Options:

A.  

True

B.  

False

Discussion 0
Question # 60

Which of the following are correct descriptions of read-only nodes?

Options:

A.  

Independent CPU/memory, each provides equal read performance

B.  

Adding read-only nodes is fast, independent of data size

C.  

Only metadata is exchanged with primary, minimal overhead

D.  

No interaction between read-only nodes, scaling doesn’t affect others

Discussion 0
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