1Z0-921 Actual Questions Answers PDF 100% Cover Real Exam Questions
1Z0-921 Exam questions and answers
Oracle 1Z0-921 (MySQL 2021 Implementation Essentials) Certification Exam is designed for individuals who plan to work with MySQL databases. 1Z0-921 exam is targeted towards database administrators, developers, and consultants who are responsible for designing, implementing and managing MySQL databases. MySQL 2021 Implementation Essentials certification exam ensures that individuals have the necessary knowledge and skills to work with MySQL databases efficiently and effectively.
Oracle 1Z0-921 exam consists of 70 multiple-choice questions that must be completed within 105 minutes. 1Z0-921 exam is available in English and Japanese and can be taken at any Pearson VUE testing center worldwide. The passing score for the exam is 66%, and the exam fee is $245.
NEW QUESTION # 15
Which three statements describe MySQL Enterprise Backup?
- A. MySQL Enterprise Backup provides the point-in-time recovery functionality.
- B. MySQL Enterprise Backup is an optimized backup based on mysqldump with optimized row locking.
- C. MySQL Enterprise Backup can be used to import/export data from on-premises MySQL installations.
- D. MySQL Enterprise Backup offers backup based on Oracle RMAN with optimized row locking.
- E. MySQL Enterprise Backup can be used to send backups to Oracle Cloud Infrastructure Storage Service.
Answer: A,B,D
NEW QUESTION # 16
What are the two main components required to set up persistent storage for MySQL on Kubernetes?
Response:
- A. Pod and ReplicaSet
- B. Secret and Deployment
- C. PVC (Persistent Volume Claim) and ConfigMap
- D. PVC (Persistent Volume Claim) and PV (Persistent Volume)
Answer: D
NEW QUESTION # 17
Consider this SQL statement which is using the innoDB storage engine and with global AUTOCOMMIT = 1:
What is the result after issuing the rollback command?
- A. Only the t2 table is created.
- B. Both the tables, t1 and t2, are not created because there is an explicit ROLLBACK.
- C. Both the tables, t1 and t2, are created.
- D. Only the t1 table is created.
Answer: C
NEW QUESTION # 18
Your newly-created Oracle Cloud Infrastructure instance is not available for login in. Which is a valid reason for this issue?
- A. You forgot to create the correct SSL/TLC certificate during the setup process.
- B. The opc user can be used to access MySQL only with the created SSH-Key.
- C. You forgot to enable port 3306.
- D. The OCI instance is still in the "creation" process.
- E. Only root is allowed to access from non-localhost.
Answer: C
NEW QUESTION # 19
Which statement would you use to remove the population column from the city table?
- A. ALTER TABLE city LESS population;
- B. ALTER TABLE city DELETE population;
- C. DROP population FROM city;
- D. ALTER TABLE city DROP population;
- E. DELETE population FROM city;
Answer: D
NEW QUESTION # 20
Which two statements are true about the creation or use of a Virtual Cloud Network (VCN)?
- A. You can connect directly to an instance over the internet, without a public IP address.
- B. You must have an Internet gateway to connect to a public address on an Oracle Linux instance.
- C. You can connect directly to the VCN without a define subnet.
- D. Your instance does not have a public IP address, so you cannot connect with a public subnet.
- E. You must have an IPSec VPN to connect to an Oracle Linux instance.
Answer: A,C
NEW QUESTION # 21
You set up a compressed full backup file from mysqlbackup by using the --compress option for MySQL Database backup. You are required to restore the database and apply the log.
Which two options should you add to the mysqlbackup to achieve the restoration of the database?
- A. --decompress
- B. --uncompress-and-apply-log
- C. --copy-back-and-apply-log
- D. --apply-log-and-copy-back
- E. --uncompress
Answer: C,E
NEW QUESTION # 22
You want to create an encrypted table. So, you enter this command:
CREATE TABLE 'test_encryption2% (
'id' int(10) unsigned NOT NULL AUTO_INCREMENT,
'server_name' varchar(15) NOT NULL,
PRIMARY KEY ('id') ) ENGINE=MYISAM AUTO_INCREMENT=l DEFAULT CHARSET=latin1 ENCRYPTION = 'Y1; You receive the following error:
ERROR 1031 (HY000): Table storage engine for 'test_encryption2' doesn't have this option Which statement correctly explains the reason for this error?
- A. The encryption feature only works with InnoDB tables. You are creating a MylSAM table, and it is causing the error.
- B. The term "server_name" is a reserved MySQL term. You cannot use it for the new table. This is what is causing the error.
- C. The test_encryption2 already exist. You are not using the correct option to recreate it and it is causing the error.
- D. You cannot use the AUTO_INCREMENT option to create an encrypted table. This is what is causing the error.
Answer: A
NEW QUESTION # 23
MySQL Enterprise Masking and De-identification can hide or obfuscate sensitive data, by controlling how the data appears. Which three are MySQL Enterprise Masking and De-identification functions?
- A. misspelling
- B. strict or relaxed masking
- C. whitelisting and substitution
- D. random data substitution
- E. dictionary substitution
Answer: B,D,E
NEW QUESTION # 24
The replication for a Master and Slave MySQL Servers is up and running. The disk space for Master Server is continuously growing. The binlog size keeps growing. Which two methods can fix the issue?
- A. Set the expire_logs_days system variable to expire binary log files automatically after a given number of days.
- B. To safely purge binary log files, perform these steps:
- C. Execute the purge binary logs statement without argument.
- D. On the Master server, disable binlog by removing the --log-bin option.
- E. Delete all binlog files manually on the file system to release storage spaces.
Answer: A,B
NEW QUESTION # 25
Which two are advantages of using Document Store in MySQL?
- A. MySQL provides a native data type to store JSON data as a document
- B. MySQL provides a NoSQL API to access the document store
- C. MySQL can store XML as a schema-less database
- D. MySQL provides a native data type to index PDF documents
- E. MySQL is a document database allowing PDF and Word documents
Answer: B,C
NEW QUESTION # 26
Which two deployment architectures could you use for scaling-out database reads?
- A. Adding a memcached-tier for caching data and objects in RAM to reduce the number of times an external data source must be read.
- B. Changing the system setting with memory stickiness to true in order not to swap out mysq1dfrom memory.
- C. Edit the configuration file and increase the value for parallel_read_workers and reboot the server
- D. Altering the storage engine for all tables to memory to increase performance.
- E. Implementing a three-node, single-primary InnoDB Cluster.
Answer: D,E
NEW QUESTION # 27
Which three are levels in which MySQL Enterprise Monitor provides access control?
- A. Asset visibility: the rights to access data collected from hosts or MySQL instances
- B. Specific data access: the rights to view specific types of potentially sensitive data
- C. MySQL Enterprise Operations: the right to start/stop/restart/update MySQL Enterprise Monitor Services
- D. MySQL Enterprise Operations: the right to deploy the necessary MySQL Enterprise Agent
- E. Application administration: the rights to view or change the MySQL Enterprise Monitor configuration
Answer: A,B,E
NEW QUESTION # 28
Which two statements are true about MySQL Enterprise Authentication?
- A. MySQL Enterprise Authentication makes it more difficult to set up security because you have different sets of security policies.
- B. MySQL Enterprise Authentication supports Windows Active Directory.
- C. MySQL Enterprise Edition automatically connects to Oracle Password Vault to verify user passwords..
- D. MySQL Enterprise Authentication supports Linux Pluggable Authentication Modules (PAM).
- E. MySQL Enterprise Authentication determines what operation the user can perform.
Answer: B,D
NEW QUESTION # 29
An existing MySQL Database environment has been doing backup and restore in a logical way by using the mysq1dump and mysq1 client utilities. When the backup is started using mysqldump with single-transaction mode, the existing application has long wait time. When the restore is required, it takes more than three hours to restore.
What two are benefits of using mysqlbackup from MySQL Enterprise Backup in this situation?
- A. mysqlbackup can back up tables with the InnoDB engine without blocking. The backup is hot with InnoDB. Together with Incremental Backup, mysqlbackup from MySQL Enterprise Backup shortens the backup windows.
- B. MySQL Enterprise Backup does not back up system data so that it is much faster.
- C. MySQL Enterprise Backup provides tape backup integration by default. It has the virtual tape option, which allows backup to tape device directly without extra third-party software integration.
- D. mysqlbackup from MySQL Enterprise Backup allows logical backup with concurrency built in to get faster backup speed and restoration speed.
- E. mysqlbackup utilities dump the full database into a SQL file, which is imported into the mysql client in single-thread mode. mysqlbackup restores data from physical backups. Physical backup methods are faster than logical methods because they involve only file coping without conversion.
Answer: D,E
NEW QUESTION # 30
Which two statements are correct about MySQL Enterprise Edition?
- A. Oracle offers 24x7, global support for MySQL Enterprise Edition products installed on Oracle Cloud Infrastructure Compute Instances.
- B. MySQL Enterprise Edition can be installed on an Oracle Cloud Infrastructure Compute Instance.
- C. MySQL configuration can be changed in /etc/lib/myi.cnf.
- D. MySQL Enterprise Product Suite can be installed on an Oracle Cloud Infrastructure Virtual Cloud Network.
- E. Oracle MySQL Enterprise tools & plugins are available as optional services (installation Feature Pack I/II).
Answer: C,E
NEW QUESTION # 31
When should you perform a backup in a MySQL database?
Response:
- A. After every successful query execution.
- B. After critical data updates or before making significant changes to the database.
- C. Only during scheduled maintenance windows.
- D. Only when the database size exceeds a certain limit.
Answer: B
NEW QUESTION # 32
When using an Oracle Cloud Infrastructure Compute Instance with MySQL Enterprise Edition installed, you have two choices for backup destinations. What are these two choices?
- A. Cloud tape library
- B. Flash-archive recovery area
- C. Cloud storage only
- D. Both Cloud storage and local storage
Answer: C,D
NEW QUESTION # 33
You need to change the password level for a test system.
Which two allow to change this level before you create new test user/passwords?
- A. SET GLOBAL validate_password_policy=,new level,;
- B. SET GLOBAL force_password_complex_policy=0;
- C. Add validate_password_policy=,new level, in the [mysqld] section of the MySQL configuration file.
- D. Add validate_password=,new level, in the [security] section of the MySQL configuration file.
Answer: A,C
NEW QUESTION # 34
After installing MySQL 8.0, you initialize the data directory with the --initialize command. Which two are places where you can find the root password?
- A. The root password inserted in the error log set by the --log-error=[file_name] variable
- B. As root, execute the show password command by using the SHA-256 password encryption plug-in.
- C. The root password is not given and is blank. You must manually set the root password.
- D. The root_pw variable stored in the mysq1.install table.
- E. The root password displayed on the screen via a [warning] message.
Answer: B,D
NEW QUESTION # 35
......
Oracle 1Z0-921 (MySQL 2021 Implementation Essentials) Exam is a certification program designed for professionals who want to showcase their expertise in MySQL database implementation. 1Z0-921 exam is designed to test candidates' knowledge and skills in various aspects of MySQL database implementation, such as installation and configuration, security management, backup and recovery, performance optimization, and troubleshooting. 1Z0-921 exam is aimed at individuals who have a strong foundation in MySQL and want to showcase their technical skills and knowledge to potential employers.
Exam4Tests 1Z0-921 Exam Practice Test Questions: https://torrentpdf.exam4tests.com/1Z0-921-pdf-braindumps.html