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Free MySQL Database Administration 1Z0-908 Ultimate Study Guide (Updated 86 Questions)
How to Prepare for Oracle 1Z0-908: MySQL 8.0 Database Exam
Preparation Guide for Oracle 1Z0-908: MySQL 8.0 Database Administrator Exam
Introduction
Oracle, based in California, is an American multinational Information Technology company. Oracle is an international company that develops software applications for business. To help enterprises develop their operations, Oracle provides a variety of cloud-based applications and systems as well as hardware and services. Data management, business analytics, IT operations management, enterprise resource planning, security, and emerging technologies are the focus of Oracle’s applications. Oracle is best known for its database software and technology. Oracle Database, a relational Database Management System (DBMS), is one of the most popular corporate database products.
Oracle also develops and builds tools and technologies for database management systems for middle-tier applications, Human Capital Management systems (HCM), Customer Relationship Management systems (CRM), Enterprise Resource Planning systems (ERP), and Supply Chain Management systems (SCM). Oracle Database commonly known as Oracle Database Management System (DBMS) is a multi-model database management system. It is a widely used database to run tasks for Data warehousing and Online Transaction processing databases. Different service providers make Oracle Database accessible on cloud, premises, or a hybrid cloud installation.
This exam guide gives a brief introduction to the topics of 1Z0-908 practice exams and 1Z0-908 dumps.
NEW QUESTION 28
Which two statements are true about the mysql_config_editor program? (Choose two.)
- A. It can be used to create and edit SSL certificates and log locations.
- B. It manages the configuration of client programs.
- C. It will use [client] options by default unless you provide --login-path.
- D. It manages the configuration of the MySQL Firewall feature.
- E. It can move datadir to a new location.
- F. It manages the configuration of user privileges for accessing the server.
- G. It provides an interface to change my.cnf files.
Answer: B,C
NEW QUESTION 29
Consider this shell output and executed commands:
[root@oel7 ~]# ps aux | grep mysqld
mysql 2076 3.5 24.6 1386852 372572 ? Ssl 12:01 0:01 /usr/sbin/mysqid
[root@oel7 ~]# kill -15 2076
Which statement is true about MySQL server shutdown?
- A. kill -15 should be avoided. Use other methods such as mysqladmin shutdown or systemctl stop mysqld.
- B. kill -15 carries out a normal shutdown process, such as mysqladmin shutdown.
- C. mysqld_safe prohibits commands that would harm the operation of the server. An error would be returned by the kill command.
- D. kill -15 and kill -9 are effectively the same forced shutdown that risk committed transactions not written to disk.
Answer: B
NEW QUESTION 30
Which statement is true about InnoDB persistent index statistics?
- A. Setting innodb_stats_auto_recalc=ON causes statistics to be updated automatically when a new index is created.
- B. Updating index statistics is an I/O expensive operation.
- C. Execution plans based on transient index statistics improve precision when innodb_stats_persistent_sample_pages is increased.
- D. Tables are scanned and index statistics recalculated when an instance is restarted.
- E. Index statistics are calculated from pages buffered in the buffer pool for tables with InnoDB storage engine.
- F. Increasing innodb_stats_persistent_sample_pages determines higher pages scanning speed, at the cost of increased memory usage.
Answer: C
NEW QUESTION 31
Your MySQL server is running on the Microsoft Windows platform.
Which three local connection protocols are available to you? (Choose three.)
- A. TCP/IP
- B. named pipes
- C. X Protocol
- D. SOCKET
- E. shared memory
- F. UDP
Answer: A,B,E
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-8.0-en/mysql-installer-workflow.html
NEW QUESTION 32
Examine the modified output:
Seconds_Behind_ Master value is steadily growing. What are two possible causes? (Choose two.)
- A. This value shows only I/O latency and is not indicative of the size of the transaction queue.
- B. The master is producing a large volume of events in parallel but the slave is processing them serially.
- C. One or more large tables do not have primary keys.
- D. The parallel slave threads are experiencing lock contention.
- E. The master is most probably too busy to transmit data and the slave needs to wait for more data.
Answer: A,B
NEW QUESTION 33
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 --datebase=mydb1 --database=mydb2 | mysql
- D. mysqlbinlog --rewrite-db='mydb1->mydb2' | mysql
Answer: B
NEW QUESTION 34
Which two are contained in the InnoDB system tablespace (ibdata1) by default? (Chose two.)
- A. table data
- B. primary indexes
- C. user privileges
- D. change buffer
- E. doublewrite buffer
- F. InnoDB Data Dictionary
Answer: E,F
NEW QUESTION 35
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 defines all innodb tablespace options relative to a starting parent directory.
- B. It moves all innodb tablespaces to the /innodb_extrasdirectory to enable a new innodb_data_home_dirto be defined.
- C. It adds more temporary workspace in addition to the innodb_tmpdirlocation.
- D. It is not necessary because innodb_data_home_diris already defined.
- E. It allows scanning of other locations to discover more innodb tablespaces.
Answer: D
NEW QUESTION 36
You must configure the MySQL command-line client to provide the highest level of trust and security when connecting to a remote MySQL Server.
Which value of --ssl-mode will do this?
- A. REQUIRED
- B. VERIFY_IDENTITY
- C. PREFERRED
- D. VERIFY_CA
Answer: A
NEW QUESTION 37
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. ibbackup files
- B. *.ibd files
- C. *.sdi files
- D. *.CSM files
- E. ib_logfile* files
Answer: B,E
NEW QUESTION 38
Examine this command and output:
Which two statements are true? (Choose two.)
- A. The lock is at the table object level.
- B. The lock is a row-level lock.
- C. The lock is a shared lock.
- D. The lock is at the metadata object level.
- E. The lock is an exclusive lock.
- F. The lock is an intentional lock.
Answer: A,E
NEW QUESTION 39
Examine this MySQL Shell command:
dba.rebootClusterFromCompleteOutage()
Which two statements are true? (Choose two.)
- A. It picks the minimum number of instances necessary to rebuild the quorum and reconfigures InnoDB Cluster.
- B. It performs InnoDB Cluster instances rolling restart.
- C. It reconfigures InnoDB Cluster if the cluster was stopped.
- D. It only stops and restarts all InnoDB Cluster instances.
- E. It is not mandatory that all instances are running and reachable before running the command.
- F. It only starts all InnoDB Cluster instances.
- G. It stops and restarts all InnoDB Cluster instances and initializes the metadata.
Answer: B,E
NEW QUESTION 40
Examine this command, which executes successfully:
mysqlpump --user=root --password > full_backup.sql
Which two databases will be excluded from this dump? (Choose two.)
- A. employee
- B. world
- C. sys
- D. mysql
- E. information_schema
Answer: C,E
NEW QUESTION 41
Which two MySQL Shell commands are excluded from the InnoDB Cluster creation procedure? (Choose two.)
- A. dba.configureInstance()
- B. dba.createCluster()
- C. dba.checkInstanceConfiguration()
- D. cluster.addInstance()
- E. dba.configureLocalInstance()
- F. cluster.setPrimaryInstance()
- G. cluster.forceQuorumUsingPartitionOf()
Answer: F,G
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-shell-8.0-relnotes-en/news-8-0-16.html
NEW QUESTION 42
Where is the default data directory located after installing MySQL using RPM on Oracle Linux 7?
- A. /usr
- B. /var/lib/mysql
- C. /usr/mysql
- D. /etc/my.cnf
- E. /usr/bin
Answer: E
NEW QUESTION 43
Which three settings control global buffers shared by all threads on a MySQL server? (Choose three.)
- A. innodb_buffer_pool_size
- B. key_buffer_size
- C. read_buffer_size
- D. tmp_table_size
- E. sort_buffer_size
- F. table_open_cache
Answer: B,D,E
NEW QUESTION 44
Which two queries are examples of successful SQL injection attacks? (Choose two.)
- A. SELECT user,passwd FROM members
WHERE user = '?';INSERT INTO members('user','passwd') VALUES
('[email protected]','secret');--'; - B. SELECT email,passwd FROM members
WHERE email = 'INSERT INTO members('email','passwd') VALUES ('[email protected]',
'secret');--'; - C. SELECT user, phone FROM customers WHERE name = '\; DROP TABLE users; --';
- D. SELECT id, name FROM user WHERE id=23 OR id=32 OR 1=1;
- E. SELECT id, name FROM user WHERE id=23 OR id=32 AND 1=1;
- F. SELECT id, name FROM user WHERE user.id=(SELECT members.id FROM members);
Answer: B,E
NEW QUESTION 45
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. binary log
- B. general query log
- C. slow query log
- D. audit log
- E. error log
Answer: A
NEW QUESTION 46
You want to check the values of the sort_buffer_sizesession variables of all existing connections.
Which performance_schematable can you query?
- A. global_variables
- B. variables_by_thread
- C. session_variables
- D. user_variables_by_thread
Answer: C
Explanation:
Explanation/Reference: https://dev.mysql.com/worklog/task/?id=6629
NEW QUESTION 47
Examine this command, which executes successfully:
$ mysqlrouter --bootstrap user@hostname:port --directory=directory_path Which activity is performed?
- A. MySQL Router configures all the cluster nodes based on the information retrieved from the InnoDB cluster metadata server.
- B. MySQL Router configures itself based on the information retrieved from the InnoDB cluster metadata server.
- C. MySQL Router is restarted.
- D. MySQL Router is configured based on the information in files in directory_path.
Answer: B
Explanation:
Explanation/Reference: https://dev.mysql.com/doc/mysql-router/8.0/en/mysqlrouter.html
NEW QUESTION 48
Which three are characteristics of a newly created role? (Choose three.)
- A. It can be protected with a password.
- B. It can be dropped using the DROP ROLEstatement.
- C. It can be granted to user accounts.
- D. It is created as a locked account.
- E. It can be renamed using the RENAME ROLEstatement.
- F. It is stored in the mysql.roletable.
Answer: A,B,C
Explanation:
Explanation/Reference:
NEW QUESTION 49
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