Oracle 1Z0-908 Premium Exam Engine pdf - Download Free Updated 86 Questions
Verified 1Z0-908 Bundle Real Exam Dumps PDF
Average Salary for Oracle 1Z0-908: MySQL 8.0 Database Exam Certified Professional
Oracle Database administrator roles are in great demand nowadays. The average salaries of Oracle 1Z0-908 Exam Certified professional in:
- United State - 94,000 USD
- India - 69,96,000 16,42,330 INR
- Europe - 80,000 Euro
- England - 71,000 POUND
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.
How to book the Oracle 1Z0-908: MySQL 8.0 Database Exam
If you are looking to appear in the Oracle 1Z0-908: MySQL 8.0 Database Exam, you can do so by either redeeming a voucher that you must buy from Oracle or paying directly with a credit card. After payment, you can schedule the test via Oracle’s external testing provider, PearsonVue.
NEW QUESTION 39
You wish to protect your MySQL database against SQL injection attacks.
Which method would fail to do this?
- A. using PREPARED STATEMENTS
- B. avoiding concatenation of SQL statements and user-supplied values in an application
- C. installing and configuring the Connection Control plugin
- D. using stored procedures for any database access
Answer: D
NEW QUESTION 40
The data in this instance is transient; no backup or replication will be required. It is currently under performing.
* The database size is static and including indexes is 19G.
* Total system memory is 32G.
After profiling the system, you highlight these MySQL status and global variables:
The OS metrics indicate that disk is a bottleneck.
Other variables retain their default values.
Which three changes will provide the most benefit to the instance? (Choose three.)
- A. innodb_log_file_size=1G
- B. innodb_flush_log_at_trx_commit=1
- C. sync_binlog=0
- D. innodb_undo_directory=/dev/shm
- E. max_connections=10000
- F. buffer_pool_size=24G
- G. innodb_doublewrite=0
Answer: A,B,E
Explanation:
Explanation/Reference: https://aws.amazon.com/blogs/database/best-practices-for-configuring-parameters-for-amazon- rds-for-mysql-part-1-parameters-related-to-performance/
NEW QUESTION 41
Which two statements are true about InnoDB data-at-rest encryption? (Choose two.)
- A. It supports only non-blob datatypes.
- B. It decrypts data for use in memory.
- C. It enforces encryption from disk to memory and over network transmission.
- D. It supports all indexes transparently.
- E. It does not support the transportable tablespaces feature.
Answer: B,D
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-8.0-en/faqs-tablespace-encryption.html
NEW QUESTION 42
What does the binlog dump thread do?
- A. It reads the relay log and executes the events contained in them.
- B. It monitors and schedules the rotation/deletion of the binary logs.
- C. It acquires a lock on the binary log for reading each event to be sent to the slave.
- D. It connects to the master and asks it to send updates recorded in its binary logs.
Answer: D
NEW QUESTION 43
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 OR 1=1;
- B. WHERE user = ‘?’;INSERT INTO members(‘user’,’passwd’) VALUES
(‘[email protected]’,‘secret’);--‘; - C. SELECT email,passwd FROM members
- D. SELECT id, name FROM user WHERE id=23 OR id=32 AND 1=1;
- 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: C,D
NEW QUESTION 44
Which two MySQL Shell commands are excluded from the InnoDB Cluster creation procedure? (Choose two.)
- A. dba.createCluster()
- B. cluster.addInstance()
- C. cluster.setPrimaryInstance()
- D. dba.configureLocalInstance()
- E. dba.configureInstance()
- F. dba.checkInstanceConfiguration()
- G. cluster.forceQuorumUsingPartitionOf()
Answer: C,G
NEW QUESTION 45
Examine this query:
What information does this query provide?
- A. total memory used by thread number 10
- B. total memory used across all connections associated with the user on connection number 10
- C. total memory used by connection number 10
- D. total memory used across all connections associated with the user on thread number 10
- E. total memory used by the first 10 connections
- F. total memory used by the first 10 threads
Answer: C
NEW QUESTION 46
You have an InnoDB Cluster configured with three servers.
Examine this command, which executes successfully:
mysqldump -uroot -p -d mydatabase > mydatabase_backup.sql
Due to data loss, the cluster is initialized and a restore is attempted resulting in this error:
ERROR 13176 (HY000) at line 23: Cannot update GTID_PURGED with the Group Replication plugin running Which two actions, either one of which, can fix this error and allow a successful restore of the cluster? (Choose two.)
- A. Create the backup by using the --set-gtid-purged=OFF option.
- B. Remove the @@GLOBAL.gtid_purged statement from the dump file.
- C. Stop all instances except the primary read/write master instance and run the restore.
- D. Remove the group replication plugin from each instance before restoring.
- E. Remove the @@GLOBAL.gtid_executed statement from the dump file.
- F. Restore using the --set-gtid-purged=OFF option.
Answer: A,B
NEW QUESTION 47
Examine this statement:
mysql> DROP ROLE r_role1, r_role2;
Which two are true? (Choose two.)
- A. It fails if you do not have the ADMIN OPTION of the roles r_role1 and r_role2.
- B. It fails if any of the roles is specified in the mandatory_roles variable.
- C. It fails if at least one of the roles does not exist.
- D. You must revoke all privileges from r_role1 and r_role2 before dropping the roles.
- E. Existing connections can continue to use the roles' privileges until they reconnect.
- F. You must revoke r_role1 and r_role2 from all users and other roles before dropping the roles.
Answer: A,E
NEW QUESTION 48
User account baduser@hostname on your MySQL instance has been compromised.
Which two commands stop any new connections using the compromised account? (Choose two.)
- A. ALTER USER baduser@hostname IDENTIFIED WITH mysql_no_login;
- B. ALTER USER baduser@hostname MAX_USER_CONNECTIONS 0;
- C. ALTER USER baduser@hostname DEFAULT ROLE NONE;
- D. ALTER USER baduser@hostname PASSWORD DISABLED;
- E. ALTER USER baduser@hostname ACCOUNT LOCK;
Answer: A,E
NEW QUESTION 49
Examine this command, which executes successfully:
shell> mysqldump --master-data=2 --single-transaction --result-file=dump.sql mydb Which two statements are true? (Choose two.)
- A. This option uses the READ COMMITTED transaction isolation mode.
- B. It is a cold backup.
- C. The backup created is a consistent data dump.
- D. It enforces consistent backups for all storage engines.
- E. It executes flush tables with read lock.
Answer: A,E
NEW QUESTION 50
The data in this instance is transient; no backup or replication will be required. It is currently under performing.
The database size is static and including indexes is 19G.
Total system memory is 32G.
After profiling the system, you highlight these MySQL status and global variables:
The OS metrics indicate that disk is a bottleneck. Other variables retain their default values.
Which three changes will provide the most benefit to the instance? (Choose three.)
- A. innodb_log_file_size=1G
- B. innodb_flush_log_at_trx_commit=1
- C. sync_binlog=0
- D. innodb_undo_directory=/dev/shm
- E. max_connections=10000
- F. buffer_pool_size=24G
- G. innodb_doublewrite=0
Answer: A,B,E
NEW QUESTION 51
Which two storage engines provide a view of the data consistent with the storage system at any moment? (Choose two.)
- A. InnoDB
- B. MEMORY
- C. ARCHIVE
- D. NDB
- E. MyISAM
Answer: B,E
NEW QUESTION 52
Where is the default data directory located after installing MySQL using RPM on Oracle Linux 7?
- A. /etc/my.cnf
- B. /usr/bin
- C. /usr/mysql
- D. /usr
- E. /var/lib/mysql
Answer: B
NEW QUESTION 53
Examine this command, which executes successfully:
$ mysqlrouter --bootstrap user@hostname:port --directory=directory_path Which activity is performed?
- A. MySQL Router configures itself based on the information retrieved from the InnoDB cluster metadata server.
- B. MySQL Router is configured based on the information in files in directory_path.
- C. MySQL Router configures all the cluster nodes based on the information retrieved from the InnoDB cluster metadata server.
- D. MySQL Router is restarted.
Answer: A
NEW QUESTION 54
You reconfigure and start a slave that was not replicating for several days.
The configuration file and CHANGE MASTER command are correct. Examine the GTID information from both master and slave:
Which statement is true?
- A. Replication will work.
- B. Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-cccccccccccc GTIDs.
- C. Replication will fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the master.
- D. Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.
- E. Replication will fail because the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbb GTIDs in its binary logs.
Answer: C
NEW QUESTION 55
You want to check the values of the sort_buffer_sizesession variables of all existing connections.
Which performance_schematable can you query?
- A. variables_by_thread
- B. global_variables
- C. session_variables
- D. user_variables_by_thread
Answer: C
Explanation:
Explanation/Reference: https://dev.mysql.com/worklog/task/?id=6629
NEW QUESTION 56
Examine these statements and output:
Which statement is true?
- A. The user failed to define a username and the connecting username defaulted to ''@'%'.
- B. The user is authorized as the accounting@localhost user.
- C. The user is logged in with --user=accounting as an option.
- D. The user is authorized as the rsmith@localhost user.
- E. The user is authenticated as the anonymous proxy user ''@'%'.
Answer: D
NEW QUESTION 57
Which three are characteristics of a newly created role? (Choose three.)
- A. It can be granted to user accounts.
- B. It can be renamed using the RENAME ROLE statement.
- C. It can be protected with a password.
- D. It can be dropped using the DROP ROLE statement.
- E. It is created as a locked account.
- F. It is stored in the mysql.role table.
Answer: A,C,D
NEW QUESTION 58
Which two are characteristics of snapshot-based backups? (Choose two.)
- A. A separate physical copy must be made before releasing the snapshot backup.
- B. Snapshot-based backups greatly reduce time during which the database and applications are unavailable.
- C. Snapshot backups can be used only in virtual machines.
- D. There is no need for InnoDB tables to perform its own recovery when restoring from the snapshot backup.
- E. The frozen file system can be cloned to another virtual machine immediately into active service.
Answer: A,C
NEW QUESTION 59
You execute this command:
shell> mysqlpump --exclude-databases=% --users
Which statement is true?
- A. It returns an error because the mysqldumpcommand should have been used.
- B. It creates a logical backup of only the usersdatabase.
- C. It creates a logical backup of all MySQL user accounts.
- D. It creates a logical backup of all metadata, but contains no table data.
Answer: D
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-5.7-en/mysqlpump.html
NEW QUESTION 60
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 at the metadata object level.
- D. The lock is a shared lock.
- E. The lock is an intentional lock.
- F. The lock is an exclusive lock.
Answer: A,F
NEW QUESTION 61
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 FULLTEXT INDEX (Population);
- B. ALTER TABLE world.city ADD INDEX (Name);
- C. ALTER TABLE world.city ADD FULLTEXT INDEX (Name);
- D. ALTER TABLE world.city ADD SPATIAL INDEX (Population);
- E. ALTER TABLE world.city ADD SPATIAL INDEX (Name);
- F. ALTER TABLE world.city ADD INDEX (Population);
Answer: D
Explanation:
Explanation/Reference: https://dev.mysql.com/doc/refman/5.7/en/creating-spatial-indexes.html
NEW QUESTION 62
......
Pass Your Oracle Exam with 1Z0-908 Exam Dumps: https://www.prep4sureexam.com/1Z0-908-dumps-torrent.html
1Z0-908 Dumps PDF New [2022] Ultimate Study Guide: https://drive.google.com/open?id=1-kE1DYOioXiaAKgj3Lu2tm6JSM15Z0h0