Oracle MySQL 1Z0-888 Oracle Exam Questions

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Oracle Exam Questions

Question: 1
You have just executed a manual backup by using this command:
mysqlbackup –u root –p –-socket=/tmp/my.sock –-backup-dir=/my/backup/ backup
The operation completed without error.
What is the state of this backup and operation required before it is ready to be restored?
A. Backup State = Compressed Backup
Operation = copy-back
B. Backup State = Raw Backup
Operation = apply-log
C. Backup State = Prepared Backup
Operation = validate
D. Backup State = Prepared Backup
Operation = apply-log
E. Backup State = Raw Backup
Operation = backupdir-to-image
Answer: E

Question: 2
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
Answer: A

Question: 3
A particular government’s security policy is to have very strict data encryption and safety settings.
This is done by restricting access based on their own CA authority and limiting access to particular
users within a department. Which method could be used to restrict access as required?
A. using GRANT … REQUIRE X509 AND REQUIRE ISSUER ‘/C=…..’ AND REQUIRE SUBJECT ‘/C=…
..’
B. using GRANT USAGE, X509, …….ON *.* TO user@remotehost IDENTIFIED BY
‘secret_password’
C. using GRANT … REQUIRE SSL for a secure connection
D. using GRANT USAGE, SSL, …..ON *.* TO user@remotehost IDENTIFIED BY
‘secret_password’
Answer: A

Question: 4
Is it true that binary backups always take less space than text backups?
A. Yes, because binary backups only contain data, and not statements required to insert data into the
tables.
B. No, because text backups can have optimizations, which make them smaller, such as updating
many rows at once.
C. No, because if InnoDB tables contain many empty pages, they could take more space than the
INSERT statements.
D. Yes, because even if InnoDB tables contain many empty pages, text backups have empty INSERT
statements for them.
Answer: C

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.
Answer: A