[Dec-2021] 1z1-908 Exam Dumps, 1z1-908 Practice Test Questions
Attested 1z1-908 Dumps PDF Resource [2021]
Benefits in Obtaining Oracle 1Z0-908: MySQL 8.0 Database Exam Certification
Oracle 1Z0-908 Certification will strengthen your knowledge and skills by introducing you to a wide variety of important database features, functions, and tasks. Oracle Database certification trains you on how to perform complex, hands-on activities through study, labs, and practice. This certification will help you gain a better understanding and experience with Oracle RAC and Grid Infrastructure. After gaining this certification you will be able to install, maintain, tune, and recover RAC databases, Clusterware, and ASM environments. if you are unsure that which is the correct option, mark the most suitable option as your answer so that any question should not be left unanswered in 1Z0-908 dumps pdf.
The MySQL for Database Administrators enables DBAs and other database professionals to maximize their organization’s investment in MySQL. Learn to configure the MySQL Server, set up replication and security, perform database backups and recoveries, optimize query performance, and configure for high availability. Earning this certification gives you a competitive advantage by developing a skill set that is in demand in the world. 80% of Oracle’s certified people reported that certification helped them in promotion, increase in wages, or other career improvements. You will also get a digital badge that you can display on your LinkedIn profiles. 1Z0-908 exam dumps are the best practice for the preparation.
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 much Oracle 1Z0-908: MySQL 8.0 Database Exam Cost
The price of the Oracle 1Z0-908 Exam is USD 245, for more information related to the Oracle 1Z0-908 Exam please visit Oracle website.
NEW QUESTION 42
Examine this query and output:
Which two statements are true? (Choose two.)
- A. The optimizer estimates that 51 rows in the country table have Continent = 'Asia'.
- B. It takes more than 8 milliseconds to sort the rows.
- C. The query returns exactly 125 rows.
- D. The country table is accessed as the first table, and then joined to the city table.
- E. 35 rows from the city table are included in the result.
Answer: A,E
NEW QUESTION 43
Which four are types of information stored in the MySQL data dictionary? (Choose four.)
- A. performance metrics
- B. table definitions
- C. server configuration rollback
- D. InnoDB buffer pool LRU management data
- E. stored procedure definitions
- F. access control lists
- G. view definitions
- H. server runtime configuration
Answer: B,C,E,G
NEW QUESTION 44
Which two statements are true about using backups of the binary log? (Choose two.)
- A. Multiple binary logs can be used to restore data.
- B. They allow for point-in-time recovery of the data.
- C. Binary logs are relatively small, and therefore, excellent for long-term storage and disaster recovery.
- D. Multiple binary logs can be applied in parallel for faster data restoration.
- E. Binary logs can always be used to unapply unwanted schema changes.
Answer: B,E
NEW QUESTION 45
Which two are characteristics of snapshot-based backups? (Choose two.)
- A. A separate physical copy must be made before releasing the snapshot backup.
- B. The frozen file system can be cloned to another virtual machine immediately into active service.
- 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: A,D
NEW QUESTION 46
You have configured GTID-based asynchronous replication with one master and one slave.
A user accidentally updated some data on the slave.
To fix this, you stopped replication and successfully reverted the accidental changes. Examine the current GTID information:
You must fix GTID sets on the slave to avoid replicating unwanted transactions in case of failover. Which set of actions would allow the slave to continue replicating without erroneous transactions?
- A. RESET MASTER;
SET GLOBAL gtid_purged-aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167; - B. RESET MASTER;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167; - C. SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312,bbbbbbbb- bbbb-bbbb-bbbb-bbbbbbbbbbbb:1-9; SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
- D. RESET SLAVE;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-3820;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10300; - E. RESET SLAVE;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
Answer: A
NEW QUESTION 47
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 INDEX (Name);
- C. ALTER TABLE world.city ADD INDEX (Population);
- D. ALTER TABLE world.city ADD FULLTEXT INDEX (Name);
- E. ALTER TABLE world.city ADD FULLTEXT INDEX (Population);
- F. ALTER TABLE world.city ADD SPATIAL INDEX (Population);
Answer: F
Explanation:
Explanation/Reference: https://dev.mysql.com/doc/refman/5.7/en/creating-spatial-indexes.html
NEW QUESTION 48
Examine these statements and output:
Which statement is true?
- A. The user is authorized as the rsmith@localhost user.
- B. The user failed to define a username and the connecting username defaulted to ''@'%'.
- C. The user is authenticated as the anonymous proxy user ''@'%'.
- D. The user is authorized as the accounting@localhost user.
- E. The user is logged in with --user=accounting as an option.
Answer: A
NEW QUESTION 49
You are using mysqlcheck for server maintenance.
Which two statements are true? (Choose two.)
- A. The mysqlcheck command can be renamed mysqlrepair so that it repairs tables by default.
- B. The mysqlcheck --analyze --all-databases command performs a series of checks to spot eventual table corruptions.
Section: (none)
Explanation - C. The mysqlcheck --check --all-databases command takes table write locks while performing a series of checks.
- D. The mysqlcheck --repair --all-databases command can repair an InnoDB corrupted table.
- E. The mysqlcheck --optimize --all-databases command reclaims free space from table files.
Answer: A,B
NEW QUESTION 50
Examine the modified output:
Seconds_Behind_ Mastervalue 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
Explanation:
Explanation
NEW QUESTION 51
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 52
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 fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the master.
- B. Replication will fail because the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbb GTIDs in its binary logs.
- C. Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.
- D. Replication will work.
- E. Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-cccccccccccc GTIDs.
Answer: A
NEW QUESTION 53
Which two commands will display indexes on the parts table in the manufacturing schema? (Choose two.)
- A. DESCRIBE manufacturing.parts;
- B. SELECT * FROM information_schema.COLUMN_STATISTICS;
- C. SHOW INDEXES FROM manufacturing.parts;
- D. EXPLAIN SELECT INDEXES FROM manufacturing.parts;
- E. SELECT * FROM information_schema.statistics WHERE table_schema='manufacturing' AND TABLE_NAME='parts';
Answer: B,E
NEW QUESTION 54
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. Run mysqldwith --datadirdefined for each instance.
- C. Use systemdwith different settings for each instance.
- D. Use system tools to lock each instance to its own CPU.
- E. Start mysqldor mysqld_safeusing different option files for each instance.
- F. Run MySQL Server docker containers.
Answer: B,C,E
Explanation:
Explanation/Reference:
NEW QUESTION 55
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. MEMORY
- E. MyISAM
Answer: D,E
NEW QUESTION 56
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
Explanation:
Explanation/Reference: https://mysqlserverteam.com/introducing-mysqlpump/
NEW QUESTION 57
Examine these statements, which execute successfully:
CREATE ROLE r_world_rd;
GRANT SELECT ON world.* TO r_world_rd;
CREATE USER john IDENTIFIED BY 'P@ssw0rd';
GRANT r_world_rd TO john;
Examine these statements issued by user John:
What is the reason for the error?
- A. John needs to reconnect to the database.
- B. The DBA needs to execute FLUSH PRIVILEGES.
- C. The statement was blocked by MySQL Firewall.
- D. John has not activated the role.
Answer: D
NEW QUESTION 58
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 59
A MySQL server is monitored using MySQL Enterprise Monitor's agentless installation.
Which three features are available with this installation method? (Choose three.)
- A. security-related advisor warnings
- B. disk usage and disk characteristics including disk advisors warnings
- C. operating system memory utilization
- D. MySQL Query Analysis data
- E. network-related information and network characteristics
- F. CPU utilization
- G. MySQL Replication monitoring
Answer: A,B,D
NEW QUESTION 60
You have just installed MySQL on Oracle Linux and adjusted your /etc/my.cnfparameters to suit your installation.
Examine the output:
What statement is true about the start attempt?
- A. systemdattempted to start mysqld, found another systemd mysqldprocess running, and shut it down.
- B. MySQL server continued to start up even though another process existed.
- C. MySQL server was not started due to a problem while executing process 2732.
- D. systemd found the mysqldservice disabled and failed to start it.
- E. systemdwaited for 30 seconds before timing out and start up failed.
Answer: A
NEW QUESTION 61
Which two statements are true about InnoDB data-at-rest encryption? (Choose two.)
- A. It decrypts data for use in memory.
- B. It supports only non-blob datatypes.
- C. It supports all indexes transparently.
- D. It enforces encryption from disk to memory and over network transmission.
- E. It does not support the transportable tablespaces feature.
Answer: A,C
NEW QUESTION 62
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: D
NEW QUESTION 63
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 64
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 65
Which step or set of steps can be used to rotate the error log?
- A. Execute SET GLOBAL log_error = ‘<new error log file>’.
- B. Execute SET GLOBAL expire_logs_days=0to enforce a log rotation.
- C. Execute SET GLOBAL max_error_count = <number of messages at point to rotate>.
- D. Rename the error log file on disk, and then execute FLUSH ERROR LOGS.
Answer: D
Explanation:
Explanation/Reference: https://blog.pythian.com/mysql-log-rotation/
NEW QUESTION 66
......
Latest 1z1-908 Actual Free Exam Questions Updated 86 Questions: https://www.troytecdumps.com/1z1-908-troytec-exam-dumps.html
Free 1z1-908 Exam Braindumps certification guide Q&A: https://drive.google.com/open?id=1kbtoHGhGPP-QYsWHH6agwphwiPhlj11w