Free 1Z0-888 Questions for Oracle MySQL 5.7 Database Administrator 1Z0-888 Exam as PDF & Practice Test Engine

Exam Code/Number: 1Z0-888
Exam Name/Title: MySQL 5.7 Database Administrator
Certification Provider: Oracle
Corresponding Certification: MySQL Database Administration

Exam Questions: 155
Updated On: Jun 01, 2026

Question #1

Which two statements are true about InnoDB auto-increment locking?

A. Some settings for innodb_autoinc_lock_mode can help reduce locking.

B. InnoDB always protects auto-increment updates with a table-level lock

C. InnoDB does not use locks to enforce auto-increment uniqueness.

D. InnoDB never uses table_level locks.

E. The auto-increment lock can be a table-level lock.

Discussion 0

Correct Answer: A,E Vote an answer

Question #2

Suppose you are adding rows to a MyISAM table and the --datadir location runs out of disk space.
What will happen when this occurs?

A. The server suspends operations for all storage engines until space becomes available.

B. An error message will be returned to the client .Server Error: ER_IO

C. The server will crash.

D. The server suspends that INSERT operation until space becomes available.

Discussion 0

Correct Answer: D Vote an answer

Question #3

To satisfy a security requirement, you have created or altered some user accounts to include REQUIRE X509.
Which additional task needs to be performed for those user accounts to fulfill the requirement to use X509?

A. Set the X509 option in the [client] section of the MySQL server's configuration file.

B. Install the X509 plug-in on the server.

C. Provide users access to the server's private key.

D. Distribute client digital certificates to the client computers being used to log in by the user accounts.

E. Restart the server with the --require-x509 option.

Discussion 0

Correct Answer: A Vote an answer

Question #4

You are receiving complaints from your application administrators that they are seeing periodic stalls in database response (no queries to any table are returning results for several seconds or longer). You monitor your system and notice that the durations of those stalls correspond to peaks in disk I/O.
Which 2 things should you investigate?

A. Check the rate of change in the status value Select_scan and compare to the rate of change in Com_select.

B. Check the difference between the InnoDB status values "Log Sequence number" and "Last Checkpoint" positions then compare that to the total size of the redo log.

C. Check the difference between the InooDB status values "Trx id counter" and "Purge done for" and compare to the state substatus of the main "Main thread"

D. Check the rate of change in the statis value Qcache_hits and compare that to the rate of change of Qcache_not_cached.

E. Check the rate of change in the status value Aborted_connects and compare to the rate of change in Connections.

Discussion 0

Correct Answer: B,D Vote an answer

Question #5

What is the order of tables shown in an EXPLAIN output?

A. It lists tables from the most optimized to the least optimized.

B. It lists tables from the smallest to the largest.

C. It lists tables in the order in which their data will be read.

D. It lists tables in the order in which they are specified in the statement that is being explained.

Discussion 0

Correct Answer: D Vote an answer

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Question #6

What does the Performance Schema provide?

A. auto-tuning based on settings and ongoing workload

B. a text-based version of MySQL Enterprise Monitor

C. recommendations for schema changes

D. insight into the internal working of MySQL

Discussion 0

Correct Answer: D Vote an answer

Explanation: Only visible for ExamDiscuss members. You can sign-up / login (it's free).

Question #7

You are asked to examine user accounts and find:

Which two statements will best secure this environment? (Choose two.)

A. REVOKE ALL PRIVILEGES FROM `'@'localhost';

B. ALTER USER `root'@'localhost' ACCOUNT LOCK;

C. DROP USER `'@'localhost';

D. ALTER USER `'@'localhost' PASSWORD = `secret_password';

E. ALTER USER bob@'%' IDENTIFIED BY `secret_password';

F. ALTER USER bob PASSWORD = `secret_password';

Discussion 0

Correct Answer: E,F Vote an answer

Question #8

A MySQL database uses all InnoDB tables and is configured as follows;

You will be setting up a replication slave by using mysqldump. You will need a consistent backup taken from your running production server. The process should have minimal impact to active database connections.
Which two arguments will you pass to mysqldump to achieve this?

A. --single-transaction

B. --master-data

C. --lock-all-tables

D. --skip-opt

E. --create-apply-log

Discussion 0

Correct Answer: C,D Vote an answer

Question #9

Consider a replication setup where a snapshot of the replication status shows:

Which statement is true?

A. The replication slave uses multisource replication with eight sources.

B. The melbourne channel is resolving a GTID conflict.

C. The melbourne channel is keeping up with the received events.

D. The sydney channel is keeping up with the received events.

E. The last event received from the sydney channel was at 2018-05-08 14:55:01.

Discussion 0

Correct Answer: A Vote an answer

Question #10

Exhibit:

What does the possible_keys column in this output denote?

A. whether there are any indexes on the tables that you are querying

B. whether there are any indexes in your query

C. if there are any indexes that may be used to solve this query

D. if it is possible for you to include any indexes in your query

Discussion 0

Correct Answer: D Vote an answer

Free 1Z0-888 Questions for Oracle MySQL 5.7 Database Administrator 1Z0-888 Exam as PDF & Practice Test Engine

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