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Oracle 1z0-888 Practice Test Questions Answers

Exam Code: 1z0-888 (Updated 124 Q&As with Explanation)
Exam Name: MySQL 5.7 Database Administrator
Last Update: 28-Jun-2025
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Questions Include:

  • Single Choice: 64 Q&A's
  • Multiple Choice: 60 Q&A's

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    All MySQL Database Administration Related Certification Exams

    Total Questions: 141
    Updated: 01-Jul-2025

    1z0-888 Questions and Answers

    Question # 1

    After analysis on the slow query log on a high-end OLTP service, the table identified in the slow queries is:

    What are the two most likely reasons for the slowness given this output? (Choose two.)

    A.

    Date should be a TIMESTAMP field for better performance.

    B.

    The User field is too long for most names.

    C.

    The engine type is not appropriate to the application use.

    D.

    Using default values for DATETIME causes table scans.

    E.

    No indexes are defined.

    Question # 2

    The MySQL error log shows:

    InnoDB: Warning: a long semaphore wait:

    The relevant parts of the InnoDB monitor output shows:

    Which two options would help avoid the long wait in the future?

    A.

    Increase the value of the innodb_lock_wait_timeout option.

    B.

    Increase the value of the innodb_read_io_threads option.

    C.

    Change the table to use HASH indexes instead of BTREE indexes.

    D.

    Set the value of innodb_adaptive_hash_index to zero.

    E.

    Deactivate the query cache.

    F.

    Increase the size of the InnoDB buffer pool.

    Question # 3

    Which two capabilities are granted with the SUPER privilege?

    A.

    allowing change of the server runtime configuration

    B.

    allowing a client to shut down the server

    C.

    allowing client accounts to take over the account of another user

    D.

    allowing a client to kill other client connections

    Question # 4

    Which MySQL utility program should you use to process and sort the Slow Query Log based on query time or average query time?

    A.

    mysqldumpslow

    B.

    mysqldump

    C.

    mysqlaccess

    D.

    mysqlshow

    E.

    mysqlslow

    Question # 5

    You have a consistent InnoDB backup created with mysqldump, the largest table is 50 GB in size.

    You start to restore your backup with this command;

    shell> mysql –u root –p < backup.sql

    After 30 minutes, you notice that the rate of restore seems to have slowed down. No other processes or external factors are affecting server performance.

    Which is the most likely explanation for this slowdown?

    A.

    The MySQL server has stopped inserting data to check index consistency.

    B.

    InnoDB is doing CRC32 checks over the tablespace data as it grows.

    C.

    The MySQL server is taking a periodical snapshot of data so it can resume the restore if it is interrupted mid-way.

    D.

    InnoDB has filled the redo log and now must flush the pages.

    E.

    Secondary indexes no longer fit into the buffer pool.

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