Best 1z1-908 Exam Dumps for the Preparation of Latest Exam Questions
1z1-908 Actual Questions 100% Same Braindumps with Actual Exam!
The Oracle 1Z0-908 (MySQL 8.0 Database Administrator) Exam is a certification exam designed for individuals who want to demonstrate their expertise in managing and administering MySQL databases. This exam is ideal for database administrators, developers, and IT professionals who work with MySQL databases on a regular basis. Passing this exam will prove your proficiency in MySQL database administration, and will open up new opportunities for career advancement and professional growth.
NEW QUESTION # 53
Examine this statement and output:
Which two SQL statements can jsmith execute? (Choose two.)
- A. UPDATE world.country SET Name='one' LIMIT 1;
- B. UPDATE world.country SET Name='new' WHERE Name='old';
- C. UPDATE world.country SET Name='first' ORDER BY Name LIMIT
- D. UPDATE world.country SET Name='all';
- E. UPDATE world.country SET Name=CONCAT('New ',Name);
Answer: B,D
NEW QUESTION # 54
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?
RESET MASTER;
- A. SET GLOBAL gtid_purged-aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
RESET SLAVE; - B. SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312,bbbbbbbb- - C. SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-3820;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa—aaaaaaaaaaaa:1-10300;
RESET MASTER; - D. SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
- E. bbbb-bbbb-bbbb-bbbbbbbbbbbb:1-9;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;
RESET SLAVE;
Answer: A
NEW QUESTION # 55
Which three are requirements for a secure MySQL Server environment? (Choose three.)
- A. Keep the entire software stack on one OS host.
- B. Minimize the number of non-MySQL Server-related processes running on the server host.
- C. Ensure appropriate file system privileges for OS users and groups.
- D. Restrict the number of OS users that have access at the OS level.
- E. Encrypt the file system to avoid needing exact file-system permissions.
- F. Run MySQL server as the root user to prevent incorrect sudo settings.
Answer: A,C,E
NEW QUESTION # 56
You have a MySQL system with 500 GB of data that needs frequent backups.
You use a mix of MyISAM and InnoDB storage engines for your data.
Examine your backup requirement:
* The MySQL system being backed up can never be unavailable or locked to the client applications.
* The recovery from the backup must work on any system.
* Only 1 hour of data can be lost on recovery of the backup.
Which option fulfills all backup requirements?
- A. Take a physical backup of the MySQL system.
- B. Use the Clone Plugin to copy the data to another MySQL system.
- C. Take a logical backup of the MySQL system.
- D. Take your backup from a slave of the MySQL system.
Answer: C
NEW QUESTION # 57
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. The query returns exactly 125 rows.
- C. The country table is accessed as the first table, and then joined to the city table.
- D. 35 rows from the city table are included in the result.
- E. It takes more than 8 milliseconds to sort the rows.
Answer: A,D
NEW QUESTION # 58
Examine this query and its output:
Which two statements are true? (Choose two.)
- A. User bob had the largest total time waiting for locks.
- B. The root user had the largest number of modified rows for a SELECT statement.
- C. The app user had the highest total number of rows read from storage engines.
- D. User bob had a significantly higher ratio of SELECT + INSERT statements to QUIT than both app and root users.
- E. The root user had the largest single wait time.
Answer: C,D
NEW QUESTION # 59
Which two methods allow a DBA to reset a user's password? (Choose two.)
- A. SET PASSWORD statement
- B. GRANT statement
- C. mysql_secure_installation utility
- D. mysqladmin client program
- E. ALTER USER statement
Answer: A,E
NEW QUESTION # 60
Examine this list of MySQL data directory binary logs:
binlog.000001 binlog.000002
.....
binlog.000289
binlog.000300
binlog.000301
binlog.index
Now examine this command, which executes successfully:
mysqldump --delete-master-logs --all-databases > /backup/db_backup.sql
Which two are true? (Choose two.)
- A. All databases are backed up to the output file.
- B. All non-active binary logs are removed from the master.
- C. All databases, excluding master metadata, are backed up to the output file.
- D. All binary logs are deleted from the master.
- E. All details regarding deleted logs and master metadata are captured in the output file.
- F. All binary logs are backed up and then deleted.
Answer: C,D
NEW QUESTION # 61
You have a MySQL system with 500 GB of data that needs frequent backups.
You use a mix of MyISAM and InnoDB storage engines for your dat
a. Examine your backup requirement:
The MySQL system being backed up can never be unavailable or locked to the client applications.
The recovery from the backup must work on any system.
Only 1 hour of data can be lost on recovery of the backup.
Which option fulfills all backup requirements?
- A. Take a physical backup of the MySQL system.
- B. Use the Clone Plugin to copy the data to another MySQL system.
- C. Take a logical backup of the MySQL system.
- D. Take your backup from a slave of the MySQL system.
Answer: C
NEW QUESTION # 62
Which two are true about binary logs used in asynchronous replication? (Choose two.)
- A. They are pulled from the master to the slave.
- B. They are pushed from the master to the slave.
- C. They contain events that describe database changes on the master.
- D. They contain events that describe all queries run on the master.
- E. They contain events that describe only administrative commands run on the master.
Answer: B,C
NEW QUESTION # 63
An existing asynchronous replication setup is running MySQL 8.
Which two steps are a part of implementing GTID replication? (Choose two.)
- A. On the slave, alter the MySQL master connection setting with:
CHANGE MASTER TO MASTER_AUTO_POSITION = 1; - B. Enable GTID by executing this on the master and the slave:
SET GLOBAL GTID_ENABLED=on; - C. On the slave, alter the MySQL master connection setting with:
ALTER channel CHANGE MASTER TO MASTER_AUTO_POSITION = 1; - D. Restart MySQL (master and slave) with these options enabled:
--gtid_mode=ON
--log-bin
--log-slave-updates
--enforce-gtid-consistency - E. Execute this on the slave to enable GTID:
START SLAVE IO_THREAD WITH GTID; - F. Execute this on the slave to enable GTID:
RESET SLAVE; START SLAVE GTID_NEXT=AUTOMATIC;
Answer: A,D
NEW QUESTION # 64
Examine this SQL statement:
mysql> GRANT r_read@localhost TO mark WITH ADMIN OPTION;
Which two are true? (Choose two.)
- A. Mark can revoke the r_read@localhost role from another role.
- B. Mark can grant the privileges assigned to the r_read@localhost role to another user.
- C. ADMIN OPTION allows Mark to drop the role.
- D. Mark must connect from localhost to activate the r_read@localhost role.
- E. Mark can grant the r_read@localhost role to another user.
- F. ADMIN OPTION causes the role to be activated by default.
Answer: B,C
NEW QUESTION # 65
Examine this MySQL client command to connect to a remote database:
mysql -h remote.example.org -u root -p --protocol=TCP --ssl-mode=
Which two --ssl-mode values will ensure that an X.509-compliant certificate will be used to establish the SSL/TLS connection to MySQL?
- A. VERIFY_CA
- B. PREFERRED
- C. REQUIRED
- D. DISABLED
- E. VERIFY_IDENTITY
Answer: C
NEW QUESTION # 66
You have upgraded the MySQL binaries from 5.7.28 to 8.0.18 by using an in-place upgrade.
Examine the message sequence generated during the first start of MySQL 8.0.18:
Which step or set of steps will resolve the errors?
- A. Execute: mysqlcheck --check-upgrade mysql columns_priv event proc proxies_priv tables_priv.
- B. Start mysqld again using the --upgrade=FORCE option.
- C. Go to the <datadir>/mysql directory and execute: myisamchk --update-state columns_priv event proc proxies_priv tables_priv.
- D. Execute: mysqlcheck --repair mysql columns_priv event proc proxies_priv tables_priv.
- E. Remove the redo logs. Replace the MySQL binaries with the 5.7.28 binaries. Prepare the tables for upgrade. Upgrade to 8.0.18 again.
Answer: B
NEW QUESTION # 67
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_flush_log_at_trx_commit=1
- B. sync_binlog=0
- C. innodb_undo_directory=/dev/shm
- D. innodb_log_file_size=1G
- E. buffer_pool_size=24G
- F. innodb_doublewrite=0
- G. max_connections=10000
Answer: A,D,G
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 # 68
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. The instance deployed on host3 will automatically rejoin the cluster when connectivity is re-established.
- B. The instance deployed on host3 is expelled from the cluster and must be rejoined using cluster.addInstance ('host3:3377')
- C. The primary instance can be specified by using the command
cluster.setPrimaryInstance(<host>:<port>). - D. The issuing command cluster.switchToMuitiPrimaryMode() will fail to enable multi-primary mode.
- E. Failure of the instance deployed on host1 provokes an outage.
- F. The instance deployed on host2 is elected as the new primary instance.
Answer: A,C
NEW QUESTION # 69
Which three actions are effective in capacity planning? (Choose three.)
- A. consulting the application team about any future projects and use
- B. buying more disk
- C. buying more CPU
- D. upgrading to the latest application version
- E. basing expected growth on an average of the last 3 years
- F. adding circular replication nodes for increased DML capability
- G. monitoring OS resources for patterns
- H. buying more RAM
Answer: A,E,G
NEW QUESTION # 70
You plan to take daily full backups, which include the ndbinfoand sys (internal) databases.
Which command will back up the databases in parallel?
- A. mysqlpump --all-databases > full-backup-$(date +%Y%m%d).sql
- B. mysqldump --single-transaction > full-backup-$(date +%Y%m%d).sql
- C. mysqlpump --include-databases=% > full-backup-$(date +%Y%m$d).sql
- D. mysqldump --all-databases > full_backup-$(date +%Y%m%d).sql
Answer: D
Explanation:
Explanation/Reference: https://mysqlserverteam.com/introducing-mysqlpump/
NEW QUESTION # 71
Which statement is true about displaying and retrieving data with MySQL Enterprise Monitor Query Analyzer?
- A. It is possible to export statements included in a graph selection in CSV format.
- B. The Query Analyzer can plot a CPU utilization graph for remote hosts with a MySQL Enterprise Service Manager's built-in Agent installation.
- C. The Query Analyzer graph view range selector can extend to cover the same hour over multiple days.
- D. It is possible to filter a Query Analyzer view graph by database and by table.
Answer: A
NEW QUESTION # 72
Examine the modified output:
Seconds_Behind_ Master value is steadily growing. What are two possible causes? (Choose two.)
- A. The parallel slave threads are experiencing lock contention.
- B. One or more large tables do not have primary keys.
- 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. This value shows only I/O latency and is not indicative of the size of the transaction queue.
Answer: D,E
NEW QUESTION # 73
You execute this command:
shell> mysqlpump --exclude-databases=% --users
Which statement is true?
- A. It creates a logical backup of only the users database.
- B. It returns an error because the mysqldump command should have been used.
- C. It creates a logical backup of all metadata, but contains no table data.
- D. It creates a logical backup of all MySQL user accounts.
Answer: D
Explanation:
Explanation
the command mysqlpump --exclude-databases=% --users creates a logical backup of all MySQL user accounts as CREATE USER and GRANT statements2. The option --exclude-databases=% excludes all databases from the backup, while the option --users includes all user accounts1.
NEW QUESTION # 74
Examine these statements and output:
Which statement is true?
- A. The user is authenticated as the anonymous proxy user ''@'%'.
- 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 failed to define a username and the connecting username defaulted to ''@'%'.
- E. The user is authorized as the rsmith@localhost user.
Answer: E
NEW QUESTION # 75
......
1z1-908 Study Material, Preparation Guide and PDF Download: https://www.exam4docs.com/1z1-908-study-questions.html
Free 1z1-908 Certification Sample Questions with Online Practice Test: https://drive.google.com/open?id=1uz11sJrET4qENn8geB5iC2ct7mExNw-1
