[Dec 01, 2023] 1z1-908 Practice Exam Dumps - 99% Marks In Oracle Exam
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Oracle 1z1-908 exam is intended for candidates who have experience in database administration and are familiar with MySQL 8.0 features and functionalities. 1z1-908 exam consists of 80 multiple-choice questions that need to be answered within 150 minutes. The passing score for the exam is 64%, which means you need to answer at least 51 questions correctly to pass the exam.
NEW QUESTION # 83
Examine this MySQL Shell command:
dba.rebootClusterFromCompleteOutage()
Which two statements are true? (Choose two.)
- A. It reconfigures InnoDB Cluster if the cluster was stopped.
- B. It is not mandatory that all instances are running and reachable before running the command.
- C. It picks the minimum number of instances necessary to rebuild the quorum and reconfigures InnoDB Cluster.
- D. It only stops and restarts all InnoDB Cluster instances.
- E. It only starts all InnoDB Cluster instances.
- F. It performs InnoDB Cluster instances rolling restart.
- G. It stops and restarts all InnoDB Cluster instances and initializes the metadata.
Answer: B,F
NEW QUESTION # 84
Which two statements are true about the mysql_config_editor program? (Choose two.)
- A. It will use [client] options by default unless you provide --login-path.
- B. It manages the configuration of the MySQL Firewall feature.
- C. It manages the configuration of user privileges for accessing the server.
- D. It can be used to create and edit SSL certificates and log locations.
- E. It manages the configuration of client programs.
- F. It provides an interface to change my.cnf files.
- G. It can move datadir to a new location.
Answer: A,E
NEW QUESTION # 85
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'.* 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'.'country' TO
'tom'@'%'; - D. GRANT ALL PRIVILEGES ON 'world'.'city' TO 'tom'@'%';
GRANT SELECT ('code') ON 'world'.'country' TO 'tom'@'%';
Answer: C
NEW QUESTION # 86
Which two statements are true about MySQL Enterprise Backup? (Choose two.)
- A. It supports backup of a remote MySQL system.
- B. It supports backing up only table structures.
- C. It creates logical backups.
- D. It supports the creation of incremental backups.
- E. It can perform hot or warm backups.
- F. It supports restoring to a remote MySQL system.
Answer: D,E
NEW QUESTION # 87
MySQL programs look for option files in standard locations.
Which method will show the option files and the order in which they are read?
- A. shell> mysql --print-defaults
- B. mysql> SHOW GLOBAL VARIABLES;
- C. shell> mysqladmin --debug
- D. shell> mysqld --help --verbose
Answer: C
NEW QUESTION # 88
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: A
NEW QUESTION # 89
Examine the modified output:
Seconds_Behind_ Mastervalue is steadily growing.
What are two possible causes? (Choose two.)
- A. The parallel slave threads are experiencing lock contention.
- B. This value shows only I/O latency and is not indicative of the size of the transaction queue.
- C. The master is most probably too busy to transmit data and the slave needs to wait for more data.
- D. The master is producing a large volume of events in parallel but the slave is processing them serially.
- E. One or more large tables do not have primary keys.
Answer: B,D
Explanation:
Explanation
NEW QUESTION # 90
Examine these entries from the general query log:
All UPDATE statements reference existing rows.
Which describes the outcome of the sequence of statements?
- A. Connection 25 experiences a lock wait timeout.
- B. A deadlock occurs immediately.
- C. A deadlock occurs after innodb_lock_wait_timeout seconds.
- D. All statements execute without error.
- E. Connection 24 experiences a lock wait timeout.
Answer: C
NEW QUESTION # 91
Which three are types of information stored in the MySQL data dictionary? (Choose three.)
- A. InnoDB buffer pool LRU management data
- B. view definitions
- C. server runtime configuration
- D. server configuration rollback
- E. performance metrics
- F. stored procedure definitions
- G. access control lists
Answer: B,C,E
NEW QUESTION # 92
MySQL is installed on a Linux server with this configuration:
Which method sets the default authentication to SHA-256 hashing for authenticating user account passwords?
- A. Define CREATE USER ''@'%' IDENTIFIED WITH sha256_password in the MySQL instance.
- B. Add default_authentication_plugin=mysql_native_password in the configuration file.
- C. Set validate-user-plugins=caching_sha2_password in the configuration file.
- D. Add default_authentication_plugin=sha256_password in the configuration file.
Answer: D
NEW QUESTION # 93
You are asked to review possible options for a new MySQL instance. It will be a large, busy reporting data warehousing instance.
[mysql]
innodb_data_file_path=
Which two configurations would satisfy long-term storage demands? (Choose two.)
- A. ibdatal:12M
- B. ibdatal:12M:autoextend
- C. ibdatal:12M:autoextend;ibdata2:12M:autoextend
- D. ibdatal:12M;ibdata2:12M:autoextend
- E. ibdatal:12M;/tmp/ibdata2:12M:autoextend
- F. ibdatal:12M;ibdata2:12M;ibdata3:12M
Answer: A,F
NEW QUESTION # 94
Which statement is true about InnoDB persistent index statistics?
- A. Execution plans based on transient index statistics improve precision when innodb_stats_persistent_sample_pages is increased.
- B. Updating index statistics is an I/O expensive operation.
- C. Index statistics are calculated from pages buffered in the buffer pool for tables with InnoDB storage engine.
- D. Increasing innodb_stats_persistent_sample_pages determines higher pages scanning speed, at the cost of increased memory usage.
- E. Setting innodb_stats_auto_recalc=ON causes statistics to be updated automatically when a new index is created.
Answer: B
NEW QUESTION # 95
Which condition is true about the use of the hash join algorithm?
- A. No index can be used for the join.
- B. The query must access no more than two tables.
- C. At least one of the tables in the join must have a hash index.
- D. The smallest of the tables in the join must fit in memory as set by join_buffer_size.
Answer: B
NEW QUESTION # 96
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. mysql
- B. world
- C. sys
- D. information_schema
- E. employee
Answer: C,D
Explanation:
Explanation/Reference: https://mysqlserverteam.com/introducing-mysqlpump/
NEW QUESTION # 97
Your MySQL server was upgraded from an earlier major version.
The sales database contains three tables, one of which is the transactions table, which has 4 million rows.
You are running low on disk space on the datadir partition and begin to investigate.
Examine these commands and output:
Which two statements are true? (Choose two.)
- A. Truncating the sales and leads table will free up disk space.
- B. Executing ALTER TABLE transactions will enable you to free up disk space.
- C. The transactions table was created with innodb_file_per_table=OFF.
- D. Executing SET GLOBAL innodb_row_format=COMPRESSED and then ALTER TABLE transactions will free up disk space.
- E. Truncating the transactions table will free up the most disk space.
Answer: C,D
NEW QUESTION # 98
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