Nov-2021 Realistic 1Z0-908 Exam Dumps with Accurate & Updated Questions [Q44-Q61]

Nov-2021 Realistic 1Z0-908 Exam Dumps with Accurate & Updated Questions

1Z0-908 Exam Dumps - PDF Questions and Testing Engine

What is the duration, language, and format of Oracle 1Z0-908: MySQL 8.0 Database Exam

• This exam consists of 90 questions.
• This exam is offered in only English.
• Passing score:
• The type of questions is Multiple Choice Questions.
• There is a time limit of 140 minutes for the exam.
• Certification Validity period: 3 years.
• Section 3: 33%
• Section 1: 60%
• Section 2: 45%

Oracle database certifications require periodic recertification. To hold your certification inactive condition, you must update to the new edition within 1 year of Oracle’s credential withdrawal.

 

NEW QUESTION 44
You made some table definition changes to a schema in your MySQL Server.
Which two statements reflect how MySQL Server handles the table definition changes? (Choose two.)

• A. MySQL Server stores a copy of the serialized data in the InnoDB user tablespace.
• B. MySQL implicitly executes FLUSH TABLES and stores a snapshot backup of the metadata.
• C. The metadata is serialized in JSON format in Serialized Dictionary Information (SDI).
• D. MySQL keeps InnoDB metadata changes in .sdi files in datadir.
• E. MySQL writes SDI to the binary log for distributed backups.

Answer: A,C

 

NEW QUESTION 45
Examine this SQL statement:

Which set of privileges will allow Tom to execute this SQL statement?

• A. GRANT UPDATE ON 'world'.'city' TO 'tom'@'%'; GRANT SELECT ON 'world'.'country' TO 'tom'@'%';
• B. GRANT UPDATE ON 'world'.* TO 'tom'@'%';
  GRANT ALL PRIVILEGES ON 'world'.'country' TO 'tom'@'%';
• C. GRANT UPDATE ON 'world'.'city' TO 'tom'@'%'; GRANT SELECT ON 'world'.* TO 'tom'@'%';
• D. GRANT ALL PRIVILEGES ON 'world'.'city' TO 'tom'@'%';
  GRANT SELECT ('code') ON 'world'.'country' TO 'tom'@'%';

Answer: A

 

NEW QUESTION 46
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

 

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 has built-in high availability and updates group_replication_ip_whitelist to remove the unreachable nodes.
• B. The group replication will buffer the transactions on the online nodes until the unreachable nodes return online.
• C. The cluster will shut down to preserve data consistency.
• D. 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.
• E. A manual intervention to force group members to be only the working two instances is required.

Answer: A,C

 

NEW QUESTION 48
Which two statements are true about MySQL server multi-source replication? (Choose two.)

• A. It uses only time-based replication conflict resolution.
• B. It is not compatible with auto-positioning.
• C. It relies on relay_log_recovery for resilient operations.
• D. It does not attempt to detect or resolve replication conflicts.
• E. It must use GTID replication.
• F. It needs to be re-instanced after a crash to maintain consistency.

Answer: A,E

 

NEW QUESTION 49
A colleague complains about slow response time on your website.
Examine this query and output:

What is the most likely cause for the high number of lock waits?

• A. You use the InnoDB storage engine and statements wait while data is inserted.
• B. The Innodb Buffer pool is full.
• C. You use the MyISAM storage engine for most common tables.
• D. Your table accesses wait for the operating system level flush.

Answer: A

 

NEW QUESTION 50
You have just installed MySQL on Oracle Linux and adjusted your /etc/my.cnf parameters to suit your installation.
Examine the output:

What statement is true about the start attempt?

• A. MySQL server continued to start up even though another process existed.
• B. systemd waited for 30 seconds before timing out and start up failed.
• C. systemd attempted to start mysqld, found another systemd mysqld process running, and shut it down.
• D. systemd found the mysqld service disabled and failed to start it.
• E. MySQL server was not started due to a problem while executing process 2732.

Answer: C

 

NEW QUESTION 51
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 and kill -9 are effectively the same forced shutdown that risk committed transactions not written to disk.
• B. kill -15 should be avoided. Use other methods such as mysqladmin shutdown or systemctl stop mysqld.
• 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 carries out a normal shutdown process, such as mysqladmin shutdown.

Answer: D

 

NEW QUESTION 52
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. *.ibdfiles
• C. *.CSMfiles
• D. ib_logfile*files
• E. ibbackupfiles

Answer: B,D

Explanation:
Explanation/Reference:
Reference: https://dev.mysql.com/doc/mysql-backup-excerpt/5.7/en/innodb-backup.html

 

NEW QUESTION 53
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. systemdwaited for 30 seconds before timing out and start up failed.
• C. MySQL server continued to start up even though another process existed.
• D. MySQL server was not started due to a problem while executing process 2732.
• E. systemd found the mysqldservice disabled and failed to start it.

Answer: A

 

NEW QUESTION 54
A user wants to connect without entering his or her username and password on the Linux command prompt.
Which three locations can be used to store the user's mysql credentials to satisfy this requirement? (Choose three.)

• A. $HOME/.mysql/auth/login file
• B. $HOME/.my.cnf file
• C. $HOME/.mylogin.cnf file
• D. DATADIR/mysqld-auto.cnf file
• E. $HOME/.mysqlrc file
• F. $MYSQL_HOME/my.cnf file
• G. /etc/my.cnf file

Answer: D,F,G

 

NEW QUESTION 55
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 56
Examine this command, which executes successfully:
cluster.addInstance('<user>@<host>:<port>', {recoveryMethod: 'clone'})
Which three statements are true? (Choose three.)

• A. It is always slower than {recoveryMethod: 'incremental'}.
• B. The account used to perform this recovery needs the BACKUP_ADMIN privilege.
• C. A target instance must exist, then it will be provisioned with data from an instance already in the cluster and joined to the cluster.
• D. A new instance is installed, initialized, and provisioned with data from an instance already in the cluster and joined to the cluster.
• E. InnoDB tablespaces outside the datadir are able to be cloned.
• F. InnoDB redo logs must not rotate for the duration of the execution; otherwise, the recovery will fail.

Answer: A,B,F

 

NEW QUESTION 57
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

Explanation:
Explanation/Reference: https://www.ptsecurity.com/ww-en/analytics/knowledge-base/how-to-prevent-sql-injection-attacks/

 

NEW QUESTION 58
Which two commands will display indexes on the partstable in the manufacturing schema? (Choose two.) \

• A. SHOW INDEXES FROM manufacturing.parts;
• B. SELECT * FROM information_schema.COLUMN_STATISTICS;
• C. EXPLAIN SELECT INDEXES FROM manufacturing.parts;
• D. SELECT * FROM information_schema.statistics WHERE table_schema=’manufacturing’
  AND TABLE_NAME=’parts’;
• E. DESCRIBE manufacturing.parts;

Answer: B,D

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/E11882_01/server.112/e40540/indexiot.htm#CNCPT912

 

NEW QUESTION 59
Examine these statements and output:

Which statement is true?

• A. The user is authenticated as the anonymous proxy user ‘’@’%’.
• B. The user failed to define a username and the connecting username defaulted to ‘’@’%’.
• C. The user is authorized as the accounting@localhostuser.
• D. The user is authorized as the rsmith@localhostuser.
• E. The user is logged in with --user=accountingas an option.

Answer: D

 

NEW QUESTION 60
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 61
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Who should take the Oracle 1Z0-908: MySQL 8.0 Database Exam

This course is designed for Database Administrators and Database production Systems Administrators.

 

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