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1z0-908 Exam Dumps : MySQL 8.0 Database Administrator

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MySQL 8.0 Database Administrator Questions and Answers

Question 1

A colleague complains about slow response time on your website.

Examine this query and output:

What is the most likely cause for the high number of lock waits?

Options:

A.

You use the MyISAM storage engine for most common tables.

B.

You use the InnoDB storage engine and statements wait while data is inserted.

C.

The Innodb Buffer pool is full.

D.

Your table accesses wait for the operating system level flush.

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Question 2

The data in this instance is transient; no backup or replication will be required. It is currently under performing.

  • The database size is static and including indexes is 19G.
  • Total system memory is 32G.

After profiling the system, you highlight these MySQL status and global variables:

The OS metrics indicate that disk is a bottleneck. Other variables retain their default values.

Which three changes will provide the most benefit to the instance? (Choose three.)

Options:

A.

innodb_flush_log_at_trx_commit=1

B.

buffer_pool_size=24G

C.

innodb_log_file_size=1G

D.

sync_binlog=0

E.

innodb_doublewrite=0

F.

max_connections=10000

G.

innodb_undo_directory=/dev/shm

Question 3

A MySQL server is monitored using MySQL Enterprise Monitor’s agentless installation.

Which three features are available with this installation method? (Choose three.)

Options:

A.

MySQL Replication monitoring

B.

network-related information and network characteristics

C.

MySQL Query Analysis data

D.

CPU utilization

E.

security-related advisor warnings

F.

operating system memory utilization

G.

disk usage and disk characteristics including disk advisors warnings