Steps Necessary To Pass The 1Z0-908 Exam from Training Expert TestValid
Valid Way To Pass MySQL Database Administration's 1Z0-908 Exam
NEW QUESTION 42
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 SPATIAL INDEX (Name);
- B. ALTER TABLE world.city ADD SPATIAL INDEX (Population);
- C. ALTER TABLE world.city ADD INDEX (Name);
- D. ALTER TABLE world.city ADD INDEX (Population);
- E. ALTER TABLE world.city ADD FULLTEXT INDEX (Name);
- F. ALTER TABLE world.city ADD FULLTEXT INDEX (Population);
Answer: B
NEW QUESTION 43
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->mydb2’ | mysql
- B. mysqlbinlog --datebase=mydb1 --database=mydb2 | mysql
- C. mysqlbinlog --rewrite-db=’mydb1’ --rewrite-db=’mydb2’ | mysql
- D. mysqlbinlog --read-from-remote-server --raw | sed ‘s/mydb1/mydb2/g’ | mysql
Answer: D
NEW QUESTION 44
Which two are features of MySQL Enterprise Firewall? (Choose two.)
- A. automatic locking of user accounts who break your firewall
- B. modifying SQL statement dynamically with substitutions
- C. provides stateless firewall access to TCP/3306
- D. blocking of potential threats by configuring pre-approved whitelists
- E. recording incoming SQL statement to facilitate the creation of a whitelist of permitted commands
Answer: B,D
NEW QUESTION 45
You are backing up raw InnoDB files by using mysqlbackup.
Which two groups of files will be backed up during a full backup? (Choose two.)
- A. *.sdifiles
- B. ibbackupfiles
- C. *.CSMfiles
- D. ib_logfile*files
- E. *.ibdfiles
Answer: D,E
Explanation:
Explanation/Reference:
Reference: https://dev.mysql.com/doc/mysql-backup-excerpt/5.7/en/innodb-backup.html
NEW QUESTION 46
Which two storage engines provide a view of the data consistent with the storage system at any moment? (Choose two.)
- A. NDB
- B. ARCHIVE
- C. InnoDB
- D. MyISAM
- E. MEMORY
Answer: D,E
NEW QUESTION 47
There are five MySQL instances configured with a working group replication.
Examine the output of the group members:
Which two statements are true about network partitioning in the cluster? (Choose two.)
- A. The cluster will shut down to preserve data consistency.
- B. There could be both a 2 node and 3 node group replication still running, so shutting down group replication and diagnosing the issue is recommended.
- C. The group replication will buffer the transactions on the online nodes until the unreachable nodes return online.
- D. A manual intervention to force group members to be only the working two instances is required.
- E. The cluster has built-in high availability and updates group_replication_ip_whitelistto remove the unreachable nodes.
Answer: A,E
NEW QUESTION 48
You encountered an insufficient privilege error in the middle of a long transaction.
The database administrator is informed and immediately grants the required privilege:
GRANT UPDATE ON world.city TO 'user1';
How can you proceed with your transaction with the least interruption?
- A. Re-execute the failed statement in your transaction.
- B. Change the default database and re-execute the failed statement in your transaction.
- C. Roll back the transaction and start the transaction again in the same session.
- D. Close the connection, reconnect, and start the transaction again.
Answer: A
NEW QUESTION 49
Which two statements are true about MySQL server multi-source replication? (Choose two.)
- A. It is not compatible with auto-positioning.
- B. It relies on relay_log_recovery for resilient operations.
- C. It does not attempt to detect or resolve replication conflicts.
- D. It must use GTID replication.
- E. It uses only time-based replication conflict resolution.
- F. It needs to be re-instanced after a crash to maintain consistency.
Answer: D,E
NEW QUESTION 50
Which command enables rule-based MySQL Auditing capabilities?
- A. shell> mysql < audit_log_filter_linux_install.sql
- B. shell> mysqld --initialize --log-raw=audit.log
- C. mysql> INSTALL COMPONENT audit_log;
- D. mysql> INSTALL PLUGIN audit_log;
Answer: A
NEW QUESTION 51
A valid raw backup of the shop.customers MyISAM table was taken.
You must restore the table. You begin with these steps:
1. Confirm that secure_file_priv='/var/tmp'
2. mysql> DROP TABLE shop.customers;
3. shell> cp /backup/customers.MY* /var/lib/mysql/shop/
Which two actions are required to complete the restore? (Choose two.)
- A. mysql> IMPORT TABLE FROM /var/tmp/customers.sdi
- B. mysql> IMPORT TABLE FROM /var/lib/mysql/shop/customers.sdi
- C. mysql> SOURCE '/var/tmp/customers.sdi'
- D. shell> cp /backup/customers.frm /var/lib/mysql/shop/
- E. shell> cp /backup/customers.sdi /var/lib/mysql/shop/
- F. shell> cp /backup/customers.sdi /var/tmp
- G. mysql> ALTER TABLE shop.customers DISCARD TABLESPACE
- H. mysql> ALTER TABLE shop.customers IMPORT TABLESPACE
Answer: A,H
NEW QUESTION 52
Which two queries are examples of successful SQL injection attacks? (Choose two.) SELECT user,passwd FROM members
- A. SELECT id, name FROM user WHERE id=23 OR id=32 AND 1=1;
- B. SELECT id, name FROM user WHERE id=23 OR id=32 OR 1=1;
- C. WHERE user = ‘?’;INSERT INTO members(‘user’,’passwd’) VALUES
(‘[email protected]’,‘secret’);--‘; - D. SELECT email,passwd FROM members
- E. SELECT id, name FROM user WHERE user.id=(SELECT members.id FROM members);
- F. WHERE email = ‘INSERT INTO members(‘email’,’passwd’) VALUES
(‘[email protected]’, ‘secret’);--‘;
SELECT user, phone FROM customers WHERE name = ‘\; DROP TABLE users; --‘;
Answer: A,D
NEW QUESTION 53
You are upgrading a MySQL instance to the latest 8.0 version.
Examine this output:
You plan to add this parameter to the configuration:
innodb_directories=’/innodb_extras’
Which statement is true?
- A. It allows scanning of other locations to discover more innodb tablespaces.
- B. It is not necessary because innodb_data_home_diris already defined.
- C. It adds more temporary workspace in addition to the innodb_tmpdirlocation.
- D. It defines all innodb tablespace options relative to a starting parent directory.
- E. It moves all innodb tablespaces to the /innodb_extrasdirectory to enable a new innodb_data_home_dirto be defined.
Answer: B
NEW QUESTION 54
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 --analyze --all-databases command performs a series of checks to spot eventual table corruptions.
Section: (none)
Explanation - C. The mysqlcheck command can be renamed mysqlrepair so that it repairs tables by default.
- 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 55
Which two are characteristics of snapshot-based backups? (Choose two.)
- A. A separate physical copy must be made before releasing the snapshot backup.
- B. There is no need for InnoDB tables to perform its own recovery when restoring from the snapshot backup.
- C. The frozen file system can be cloned to another virtual machine immediately into active service.
- D. Snapshot-based backups greatly reduce time during which the database and applications are unavailable.
- E. Snapshot backups can be used only in virtual machines.
Answer: A,E
NEW QUESTION 56
You have a MySQL system with 500 GB of data that needs frequent backups.
You use a mix of MyISAM and InnoDB storage engines for your dat
a. Examine your backup requirement:
The MySQL system being backed up can never be unavailable or locked to the client applications.
The recovery from the backup must work on any system.
Only 1 hour of data can be lost on recovery of the backup.
Which option fulfills all backup requirements?
- A. Take your backup from a slave of the MySQL system.
- B. Use the Clone Plugin to copy the data to another MySQL system.
- C. Take a logical backup of the MySQL system.
- D. Take a physical backup of the MySQL system.
Answer: C
NEW QUESTION 57
Examine this command and output:
Which two options will improve the security of the MySQL instance? (Choose two.)
- A. Change the parent directory owner and group to mysql.
- B. Remove world read privileges from the public_key.pem file.
- C. Change the group ownership of the mysql directory to the mysql user group.
- D. Remove world read privileges from the server-cert.pem certificate file.
- E. Remove the world read/execute privilege from the accounting directory.
- F. Remove group read/write privileges from the private_key.pem file.
Answer: A,C
NEW QUESTION 58
Which two commands will display indexes on the partstable in the manufacturing schema? (Choose two.) \
- A. SELECT * FROM information_schema.COLUMN_STATISTICS;
- B. SELECT * FROM information_schema.statistics WHERE table_schema=’manufacturing’
AND TABLE_NAME=’parts’; - C. EXPLAIN SELECT INDEXES FROM manufacturing.parts;
- D. DESCRIBE manufacturing.parts;
- E. SHOW INDEXES FROM manufacturing.parts;
Answer: A,B
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E11882_01/server.112/e40540/indexiot.htm#CNCPT912
NEW QUESTION 59
You want to check the values of the sort_buffer_sizesession variables of all existing connections.
Which performance_schematable can you query?
- A. user_variables_by_thread
- B. global_variables
- C. variables_by_thread
- D. session_variables
Answer: D
Explanation:
Explanation/Reference: https://dev.mysql.com/worklog/task/?id=6629
NEW QUESTION 60
You want to log only the changes made to the database objects and data on the MySQL system.
Which log will do this by default?
- A. audit log
- B. binary log
- C. slow query log
- D. general query log
- E. error log
Answer: B
NEW QUESTION 61
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 62
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