[Nov 05, 2023] Fully Updated Free Actual Oracle 1z1-908 Exam Questions
Free 1z1-908 Questions for Oracle 1z1-908 Exam [Nov-2023]
Oracle 1Z0-908 exam covers a range of topics, including database installation and configuration, user management, backup and recovery, performance tuning, and security. Candidates will be expected to demonstrate a deep understanding of each of these areas, as well as the ability to apply their knowledge in real-world scenarios.
NEW QUESTION # 59
Examine these InnoDB Cluster parameter settings:
Now examine the partial status:
A permanent network failure isolates host3.
Which two statements are true? (Choose two.)
- A. Failure of the instance deployed on host1 provokes an outage.
- B. The instance deployed on host3 is expelled from the cluster and must be rejoined using cluster.addInstance ('host3:3377')
- C. The instance deployed on host3 will automatically rejoin the cluster when connectivity is re-established.
- D. The issuing command cluster.switchToMuitiPrimaryMode() will fail to enable multi-primary mode.
- E. The instance deployed on host2 is elected as the new primary instance.
- F. The primary instance can be specified by using the command
cluster.setPrimaryInstance(<host>:<port>).
Answer: C,F
NEW QUESTION # 60
You recently upgraded your MySQL installation to MySQL 8.0.
Examine this client error:
Which option will allow this client to connect to MySQL Server?
- A. [mysqld]
default_authentication_plugin=mysql_native_password - B. ALTER USER user -
IDENTIFIED WITH sha256_password -
BY 'password'; - C. [mysqld]
default_authentication_plugin=caching_sha2_password - D. ALTER USER user -
IDENTIFIED WITH caching_sha2_password
BY 'password'; - E. [mysqld]
default_authentication_plugin=sha256_password - F. ALTER USER user -
IDENTIFIED WITH mysql_native_password
BY 'password';
Answer: B
NEW QUESTION # 61
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. mysqld_safe prohibits commands that would harm the operation of the server. An error would be returned by the kill command.
- C. kill -15 should be avoided. Use other methods such as mysqladmin shutdown or systemctl stop mysqld.
- D. kill -15 carries out a normal shutdown process, such as mysqladmin shutdown.
Answer: D
NEW QUESTION # 62
You have configured MySQL Enterprise Monitor to monitor your MySQL server.
Which four features are available? (Choose four.)
- A. tracing import and export with mysqidump
- B. creating e-mail alerts and SNMP traps for MySQL warnings
- C. analyzing executed MySQL queries
- D. monitoring the availability of the MySQL instance
- E. starting and stopping the MySQL instance
- F. monitoring of NDB Cluster API nodes
- G. deploying the MySQL agent on supported target operating system
Answer: A,B,C,D
NEW QUESTION # 63
Which four connection methods can MySQL clients specify with the --protocol option when connecting to a MySQL server? (Choose four.)
- A. PIPE
- B. FILE
- C. IPv6
- D. IPv4
- E. DIRECT
- F. TCP
- G. SOCKET
- H. MEMORY
Answer: A,F,G,H
NEW QUESTION # 64
Four nodes are configured to use circular replication.
Examine these configuration parameters for each node:
Which statement is true?
- A. Setting slave_preserve_commit_order to on will improve data consistency.
- B. Cross-database constraints can cause database inconsistency.
- C. Each slave thread is responsible for updating a specific database.
- D. Setting transaction_allow_batching to on will improve data consistency.
- E. Increasing slave_parallel_workers will improve high availability.
- F. Setting slave_parallel_type=DATABASE won't work for circular replication; it should be set to LOGICAL_CLOCK.
Answer: A
NEW QUESTION # 65
Which three are characteristics of a newly created role? (Choose three.)
- A. It is created as a locked account.
- B. It can be protected with a password.
- C. It can be renamed using the RENAME ROLE statement.
- D. It is stored in the mysql.role table.
- E. It can be dropped using the DROP ROLE statement.
- F. It can be granted to user accounts.
Answer: B,E,F
NEW QUESTION # 66
t is a non-empty InnoDB table.
Examine these statements, which are executed in one session:
BEGIN;
SELECT * FROM t FOR UPDATE;
Which is true?
- A. mysqlcheck --analyze --all-databases will execute normally on all tables and return a report.
- B. If OPTIMIZE TABLE; is invoked, it will create a table lock on t and force a transaction rollback.
- C. If ANALYZE TABLE; is invoked from the same session, it hangs until the transaction is committed or rolled back.
- D. If OPTIMIZE LOCAL TABLE t; is invoked from another session, it executes normally and returns the status.
Answer: D
NEW QUESTION # 67
Examine the modified output:
Seconds_Behind_ Mastervalue is steadily growing.
What are two possible causes? (Choose two.)
- A. The master is most probably too busy to transmit data and the slave needs to wait for more data.
- B. The master is producing a large volume of events in parallel but the slave is processing them serially.
- C. This value shows only I/O latency and is not indicative of the size of the transaction queue.
- D. The parallel slave threads are experiencing lock contention.
- E. One or more large tables do not have primary keys.
Answer: B,C
Explanation:
Explanation
NEW QUESTION # 68
Examine the modified output:
Seconds_Behind_ Master value is steadily growing. What are two possible causes? (Choose two.)
- A. The master is most probably too busy to transmit data and the slave needs to wait for more data.
- B. The master is producing a large volume of events in parallel but the slave is processing them serially.
- C. This value shows only I/O latency and is not indicative of the size of the transaction queue.
- D. The parallel slave threads are experiencing lock contention.
- E. One or more large tables do not have primary keys.
Answer: B,C
NEW QUESTION # 69
Examine this query:
What information does this query provide?
- A. total memory used across all connections associated with the user on thread number 10
- B. total memory used by connection number 10
- C. total memory used by thread number 10
- D. total memory used by the first 10 threads
- E. total memory used by the first 10 connections
- F. total memory used across all connections associated with the user on connection number 10
Answer: B
NEW QUESTION # 70
Examine this partial output for InnoDB Cluster status:
Which statement explains the state of the instance deployed on host2?
- A. It can rejoin the cluster by using the command dba.rebootClusterFromCompleteOutage()
- B. It has been expelled from the cluster because of a transaction error.
- C. It has been removed from the cluster by using the command STOP GROUP_REPLICATION;
- D. It can be recovered from a donor instance on host3 by cloning using the command cluster.rejoinInstance ('<user>@host3:3377')
- E. It can rejoin the cluster by using the command cluster.addInstance('<user>@host3:3377')
Answer: A
NEW QUESTION # 71
Examine this command, which executes successfully:
cluster.addInstance('<user>@<host>:<port>', {recoveryMethod: 'clone'})
Which three statements are true? (Choose three.)
- A. The account used to perform this recovery needs the BACKUP_ADMIN privilege.
- B. A new instance is installed, initialized, and provisioned with data from an instance already in the cluster and joined to the cluster.
- C. InnoDB redo logs must not rotate for the duration of the execution; otherwise, the recovery will fail.
- D. A target instance must exist, then it will be provisioned with data from an instance already in the cluster and joined to the cluster.
- E. It is always slower than {recoveryMethod: 'incremental'}.
- F. InnoDB tablespaces outside the datadir are able to be cloned.
Answer: A,C,E
NEW QUESTION # 72
Examine the modified output:
Seconds_Behind_ Master value is steadily growing. What are two possible causes? (Choose two.)
- A. The master is most probably too busy to transmit data and the slave needs to wait for more data.
- B. The master is producing a large volume of events in parallel but the slave is processing them serially.
- C. This value shows only I/O latency and is not indicative of the size of the transaction queue.
- D. The parallel slave threads are experiencing lock contention.
- E. One or more large tables do not have primary keys.
Answer: B,C
NEW QUESTION # 73
Which three settings control global buffers shared by all threads on a MySQL server? (Choose three.)
- A. sort_buffer_size
- B. key_buffer_size
- C. tmp_table_size
- D. table_open_cache
- E. read_buffer_size
- F. innodb_buffer_pool_size
Answer: A,B,C
NEW QUESTION # 74
Which two are characteristics of snapshot-based backups? (Choose two.)
- A. The frozen file system can be cloned to another virtual machine immediately into active service.
- B. There is no need for InnoDB tables to perform its own recovery when restoring from the snapshot backup.
- C. A separate physical copy must be made before releasing the snapshot backup.
- D. Snapshot backups can be used only in virtual machines.
- E. Snapshot-based backups greatly reduce time during which the database and applications are unavailable.
Answer: C,D
NEW QUESTION # 75
You issue this command:
SHOW SLAVE STATUS -
In the output, there is a value for Seconds_behind_master.
How is this time calculated?
- A. It is the time between the most recent transaction applied by a SQL thread and the time it was committed on the master.
- B. It is the time between the I/O thread receiving details of the master's last transaction and the time it was written to the relay log on the slave.
- C. It is the time between the most recent transaction written to the relay logs and the time it was committed on the master.
- D. It is the time between the I/O thread receiving details of the master's last transaction and the time it was applied by the SQL thread.
Answer: A
NEW QUESTION # 76
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Oracle 1Z0-908 certification exam is designed to test the skills and knowledge of individuals who want to become certified MySQL 8.0 database administrators. 1z1-908 exam validates the candidate's ability to install, configure, and maintain MySQL 8.0 databases, as well as their ability to optimize database performance and troubleshoot common issues. 1z1-908 exam also covers topics such as MySQL security, backup and recovery, and replication.
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