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Huawei H13-921_V1.5 - HCIP-GaussDB-OLTP V1.5

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Total 214 questions

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

In GaussDB (for MySQL), which of the following is offloaded to the storage node for execution?

A.

Transaction

B.

Buffer Pool

C.

SQL Parse

D.

Log Write

To meet data reliability requirements, GaussDB (for MySQL) can retain automatic backup recovery for up to how many days?

A.

128

B.

360

C.

356

D.

732

Which are advantages/features of GaussDB (for MySQL)?

A.

High performance: 7x native MySQL

B.

High scalability: up to 1 primary + 15 standbys, read/write separation, load balancing

C.

Massive storage: up to 128TB capacity

D.

Compute-storage separation: independently scalable resources

The regex function REGEXP_INSTR returns the starting index of a substring matching the regex. If return_option=1, it returns the last matched position.

A.

True

B.

False

GaussDB (for MySQL) deployment supports both public cloud and hybrid cloud.

A.

True

B.

False

GaussDB (for MySQL) is a single-process, multi-threaded database. What are the advantages of threads?

A.

Easier creation/management, no memory allocation overhead

B.

Easier creation/management, no merge overhead

C.

Fast context switching

D.

Misbehaving threads won’t affect the entire system

Which functions can database security auditing provide?

A.

Reporting

B.

User behavior audit

C.

Multidimensional analysis

D.

Real-time alerts

Huawei Cloud DB Security Audit supports analyzing SQL behavior by risk levels, SQL injection, blacklist statements, and unauthorized operations.

A.

True

B.

False

What are the main advantages of the GaussDB (for MySQL) product?

A.

High reliability

B.

High scalability

C.

Ultra-high performance

D.

High compatibility