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NEW QUESTION 27
Examine this list of MySQL data directory binary logs:
binlog.000001
binlog.000002
.....
binlog.000289
binlog.000300
binlog.000301
binlog.index
Now examine this command, which executes successfully:
mysqldump --delete-master-logs --all-databases > /backup/db_backup.sql
Which two are true? (Choose two.)
- A. All databases are backed up to the output file.
- B. All details regarding deleted logs and master metadata are captured in the output file.
- C. All binary logs are backed up and then deleted.
- D. All databases, excluding master metadata, are backed up to the output file.
- E. All binary logs are deleted from the master.
- F. All non-active binary logs are removed from the master.
Answer: D,E
NEW QUESTION 28
Which two statements are true about using backups of the binary log? (Choose two.)
- A. Binary logs can always be used to unapply unwanted schema changes.
- B. Multiple binary logs can be applied in parallel for faster data restoration.
- C. Binary logs are relatively small, and therefore, excellent for long-term storage and disaster recovery.
- D. They allow for point-in-time recovery of the data.
- E. Multiple binary logs can be used to restore data.
Answer: A,D
NEW QUESTION 29
Examine this statement, which executes successfully:
You want to improve the performance of this query:
Which change enables the query to succeed while accessing fewer rows?
- A. ALTER TABLE world.city ADD INDEX (Population);
- B. ALTER TABLE world.city ADD FULLTEXT INDEX (Name);
- C. ALTER TABLE world.city ADD SPATIAL INDEX (Name);
- D. ALTER TABLE world.city ADD FULLTEXT INDEX (Population);
- E. ALTER TABLE world.city ADD SPATIAL INDEX (Population);
- F. ALTER TABLE world.city ADD INDEX (Name);
Answer: E
NEW QUESTION 30
Which two are true about binary logs used in asynchronous replication? (Choose two.)
- A. They are pushed from the master to the slave.
- B. They contain events that describe only administrative commands run on the master.
- C. They are pulled from the master to the slave.
- D. They contain events that describe database changes on the master.
- E. They contain events that describe all queries run on the master.
Answer: A,D
NEW QUESTION 31
Which four connection methods can MySQL clients specify with the --protocol option when connecting to a MySQL server? (Choose four.)
- A. IPv6
- B. FILE
- C. SOCKET
- D. MEMORY
- E. PIPE
- F. DIRECT
- G. TCP
- H. IPv4
Answer: C,D,E,G
NEW QUESTION 32
Binary log events for the ‘mydb1’ schema must be copied to a different schema name ‘mydb2’.
Which command will do this?
- A. mysqlbinlog --rewrite-db=’mydb1’ --rewrite-db=’mydb2’ | mysql
- B. mysqlbinlog --read-from-remote-server --raw | sed ‘s/mydb1/mydb2/g’ | mysql
- C. mysqlbinlog --rewrite-db=’mydb1->mydb2’ | mysql
- D. mysqlbinlog --datebase=mydb1 --database=mydb2 | mysql
Answer: B
NEW QUESTION 33
You wish to protect your MySQL database against SQL injection attacks.
Which method would fail to do this?
- A. installing and configuring the Connection Control plugin
- B. using PREPARED STATEMENTS
- C. avoiding concatenation of SQL statements and user-supplied values in an application
- D. using stored procedures for any database access
Answer: D
Explanation:
Explanation/Reference: https://www.ptsecurity.com/ww-en/analytics/knowledge-base/how-to-prevent-sql-injection-attacks/
NEW QUESTION 34
You are using mysqlcheck for server maintenance.
Which two statements are true? (Choose two.)
- A. The mysqlcheck --optimize --all-databases command reclaims free space from table files.
- B. The mysqlcheck command can be renamed mysqlrepair so that it repairs tables by default.
- C. The mysqlcheck --analyze --all-databases command performs a series of checks to spot eventual table corruptions.
Section: (none)
Explanation - D. The mysqlcheck --repair --all-databases command can repair an InnoDB corrupted table.
- E. The mysqlcheck --check --all-databases command takes table write locks while performing a series of checks.
Answer: B,C
NEW QUESTION 35
Examine these commands and output:
Which connection ID is holding the metadata lock?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
- F. 5
Answer: B
NEW QUESTION 36
You must run multiple instances of MySQL Server on a single host.
Which three methods are supported? (Choose three.)
- A. Use resource groups to lock different instances on separate CPUs.
- B. Use systemd with different settings for each instance.
- C. Start mysqld or mysqld_safe using different option files for each instance.
- D. Run MySQL Server docker containers.
- E. Run mysqld with --datadir defined for each instance.
- F. Use system tools to lock each instance to its own CPU.
Answer: B,C,E
NEW QUESTION 37
Which two statements are true about using MySQL Enterprise Monitor Query Analyzer? (Choose two.)
- A. It is possible to retrieve a normalized statement, but never the exact statement that was executed.
- B. It is possible to import data into the Query Analyzer from heterogeneous sources, such as CSV.
- C. It is possible to list and analyze statements in an arbitrary graph range selection from timeseries graphs.
- D. The single query QRTi pie chart in the Query Analyzer view is based on the average execution of all statements.
- E. It is possible to configure the Query Analysis built-in advisor to get notified about slow query execution.
Answer: C,E
NEW QUESTION 38
Which three statements are true about MySQL replication? (Choose three.)
- A. Each slave must have its own MySQL user for replication.
- B. Replication can use only TCP/IP connections.
- C. Binary logging must be enabled on the master in order to replicate to other instances.
- D. A replication user must have the SELECT privilege for all tables that need to be replicated.
- E. Each instance in a replication topology must have a unique server ID.
- F. Any instance can have multiple slaves, but it can have only one master.
- G. Binary logs contain only transactions originating from a single MySQL instance.
Answer: C,D,E
NEW QUESTION 39
Which two statements are true about InnoDB data-at-rest encryption? (Choose two.)
- A. It decrypts data for use in memory.
- B. It supports all indexes transparently.
- C. It does not support the transportable tablespaces feature.
- D. It supports only non-blob datatypes.
- E. It enforces encryption from disk to memory and over network transmission.
Answer: A,B
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-8.0-en/faqs-tablespace-encryption.html
NEW QUESTION 40
Examine this statement, which executes successfully:
You want to improve the performance of this query:
Which change enables the query to succeed while accessing fewer rows?
- A. ALTER TABLE world.city ADD INDEX (Population);
- B. ALTER TABLE world.city ADD FULLTEXT INDEX (Name);
- C. ALTER TABLE world.city ADD SPATIAL INDEX (Name);
- D. ALTER TABLE world.city ADD FULLTEXT INDEX (Population);
- E. ALTER TABLE world.city ADD SPATIAL INDEX (Population);
- F. ALTER TABLE world.city ADD INDEX (Name);
Answer: E
Explanation:
Explanation/Reference: https://dev.mysql.com/doc/refman/5.7/en/creating-spatial-indexes.html
NEW QUESTION 41
Examine this query:
What information does this query provide?
- A. total memory used by the first 10 connections
- B. total memory used by connection number 10
- C. total memory used across all connections associated with the user on thread number 10
- D. total memory used across all connections associated with the user on connection number 10
- E. total memory used by thread number 10
- F. total memory used by the first 10 threads
Answer: B
NEW QUESTION 42
Which two are features of MySQL Enterprise Firewall? (Choose two.)
- A. blocking of potential threats by configuring pre-approved whitelists
- B. recording incoming SQL statement to facilitate the creation of a whitelist of permitted commands
- C. modifying SQL statement dynamically with substitutions
- D. automatic locking of user accounts who break your firewall
- E. provides stateless firewall access to TCP/3306
Answer: A,C
NEW QUESTION 43
Examine this SQL statement:
mysql> GRANT r_read@localhost TO mark WITH ADMIN OPTION;
Which two are true? (Choose two.)
- A. Mark can grant the r_read@localhost role to another user.
- B. ADMIN OPTION causes the role to be activated by default.
- C. Mark can grant the privileges assigned to the r_read@localhost role to another user.
- D. Mark must connect from localhost to activate the r_read@localhost role.
- E. ADMIN OPTION allows Mark to drop the role.
- F. Mark can revoke the r_read@localhost role from another role.
Answer: C,E
NEW QUESTION 44
Which two are characteristics of snapshot-based backups? (Choose two.)
- A. The frozen file system can be cloned to another virtual machine immediately into active service.
- B. A separate physical copy must be made before releasing the snapshot backup.
- C. Snapshot-based backups greatly reduce time during which the database and applications are unavailable.
- D. Snapshot backups can be used only in virtual machines.
- E. There is no need for InnoDB tables to perform its own recovery when restoring from the snapshot backup.
Answer: B,D
NEW QUESTION 45
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