無料でゲット！2023年最新のに更新されたOracle 1Z0-908試験問題と解答
1Z0-908問題集PDFとテストエンジン試験問題
試験を受験するには、候補者は MySQL データベースでの最低 2 年の経験と、MySQL アーキテクチャおよび関連技術に関する堅実な理解が必要です。試験は英語と日本語で利用可能であり、オンラインまたは認定テストセンターでの受験が可能です。
Oracleの1Z1-908認定試験は、MySQLのアーキテクチャ、インストールと設定、セキュリティ管理、バックアップとリカバリ、パフォーマンス最適化、高可用性など、広範なトピックをカバーしています。この試験に合格することで、候補者はこれらの分野での熟練度を証明し、認定されたMySQL 8.0データベース管理者として認められます。この認証は、MySQLデータベースの管理と管理における専門知識を証明することで、個人のキャリアを進め、収益のポテンシャルを高めるのに役立ちます。
Oracle 1Z0-908 認定試験は IT 業界で高く評価されており、この認定試験を取得した人々は MySQL データベース管理のエキスパートとして認められます。この認定試験は、個人のキャリアの可能性を大幅に向上させることができ、多くの雇用主がこの認定を持つ候補者を積極的に求めています。
質問 # 66
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/.my.cnf file
- B. $MYSQL_HOME/my.cnf file
- C. DATADIR/mysqld-auto.cnf file
- D. $HOME/.mysqlrc file
- E. $HOME/.mylogin.cnf file
- F. $HOME/.mysql/auth/login file
- G. /etc/my.cnf file
正解：B、C、G
質問 # 67
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. MySQL server continued to start up even though another process existed.
- B. systemdwaited for 30 seconds before timing out and start up failed.
- C. systemdattempted to start mysqld, found another systemd mysqldprocess running, and shut it down.
- D. systemd found the mysqldservice disabled and failed to start it.
- E. MySQL server was not started due to a problem while executing process 2732.
正解：C
質問 # 68
Which three statements are true about MySQL replication? (Choose three.)
- A. Binary logs contain only transactions originating from a single MySQL instance.
- B. A replication user must have the SELECT privilege for all tables that need to be replicated.
- C. Any instance can have multiple slaves, but it can have only one master.
- D. Binary logging must be enabled on the master in order to replicate to other instances.
- E. Each instance in a replication topology must have a unique server ID.
- F. Replication can use only TCP/IP connections.
- G. Each slave must have its own MySQL user for replication.
正解：B、D、E
質問 # 69
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. Add default_authentication_plugin=sha256_password in the configuration file.
- B. Define CREATE USER ''@'%' IDENTIFIED WITH sha256_password in the MySQL instance.
- C. Add default_authentication_plugin=mysql_native_password in the configuration file.
- D. Set validate-user-plugins=caching_sha2_password in the configuration file.
正解：A
質問 # 70
Your MySQL environment has asynchronous position based-replication with one master and one slave.
The slave instance had a disk I/O problem, so it was stopped.
You determined that the slave relay log files were corrupted and unusable, but no other files are damaged.
You restart MySQL Server.
How can replication be restored?
- A. The slave relay logs should be deleted; then execute START SLAVE;
- B. The slave needs to be restored from backup.
- C. The relay logs from the master should be used to replace the corrupted relay logs.
- D. The slave relay logs should be deleted; execute CHANGE MASTER to adjust the replication relay log file name, then issue start SLAVE;
正解：C
質問 # 71
An attempt to recover an InnoDB Cluster fails.
Examine this set of messages and responses:
host3:3377 ssl JS > dba.rebootClusterFromCompleteOutage() Reconfiguring the default cluster from complete outage...
The instance 'host1:3377'' was part of the cluster configuration. Would you like to rejoin it to the cluster? [y/N]: y The instance 'host2:3377' was part of the cluster configuration. Would you like to rejoin it to the cluster? [y/N]: y Dba.rebootClusterFromCompleteOutage: The active session instance isn't the most updated in comparison with the ONLINE instances of the Cluster's metadat a. Please use the most up to date instance: 'host1:3377'. (RuntimeError) Which statement is true?
- A. The instance deployed on host3 must be synchronized from a donor deployed on host1 by using the command cluster.addInstance('host1:3377').
- B. It is possible to determine the most up-to-date instance by comparing different global transaction identifier (GTID) sets with GTID_SUBSET(set1,set2).
- C. The active session instance is invalid and must be re-created by using the command shell.connect ('host3:3377').
- D. The instance deployed on host3 must be rebuilt with a backup from the primary instance.
- E. The cluster is running and there is at least one ONLINE instance.
正解：A
質問 # 72
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;ibdata2:12M:autoextend
- B. ibdatal:12M;ibdata2:12M;ibdata3:12M
- C. ibdatal:12M:autoextend
- D. ibdatal:12M:autoextend;ibdata2:12M:autoextend
- E. ibdatal:12M;/tmp/ibdata2:12M:autoextend
- F. ibdatal:12M
正解：B、F
質問 # 73
You plan to take daily full backups, which include the ndbinfo and sys (internal) databases.
Which command will back up the databases in parallel?
- A. mysqlpump --include-databases=% > full-backup-$(date +%Y%m$d).sql
- B. mysqldump --all-databases > full_backup-$(date +%Y%m%d).sql
- C. mysqldump --single-transaction > full-backup-$(date +%Y%m%d).sql
- D. mysqlpump --all-databases > full-backup-$(date +%Y%m%d).sql
正解：A
解説：
Explanation
https://dev.mysql.com/doc/refman/8.0/en/mysqlpump.html By default --all-databases won't backup ndbinfo schema this can be done via
--include-database=%https://dev.mysql.com/doc/refman/8.0/en/mysqlpump.html#mysqlpump-restrictions
質問 # 74
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 a shared lock.
- D. The lock is an exclusive lock.
- E. The lock is an intentional lock.
- F. The lock is at the metadata object level.
正解：A、D
質問 # 75
You have a MySQL client installed on your Linux workstation with a default installation. You have your admin login credentials to connect to a MySQL server running Microsoft Windows on remote host
192.0.2.1:3306. You wish to connect directly to the world database.
Which four options need to be specified to complete this task with a single command? (Choose four.)
- A. --host=192.0.2.1
- B. --password
- C. --protocol=pipe
- D. --protocol=UDP
- E. --user=admin
- F. --shared-memory-base-name=world
- G. --database=world
- H. --socket=/tmp/mysql.sock
- I. --port=3306
正解：A、B、C、F
質問 # 76
Examine this command, which executes successfully:
cluster.addInstance('<user>@<host>:<port>', {recoveryMethod: 'clone'})
Which three statements are true? (Choose three.)
- A. InnoDB tablespaces outside the datadir are able to be cloned.
- B. A new instance is installed, initialized, and provisioned with data from an instance already in the cluster and joined to the cluster.
- C. It is always slower than {recoveryMethod: 'incremental'}.
- 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. InnoDB redo logs must not rotate for the duration of the execution; otherwise, the recovery will fail.
- F. The account used to perform this recovery needs the BACKUP_ADMIN privilege.
正解：C、E、F
質問 # 77
Which two are contained in the InnoDB system tablespace (ibdata1) by default? (Chose two.)
- A. change buffer
- B. doublewrite buffer
- C. user privileges
- D. InnoDB Data Dictionary
- E. primary indexes
- F. table data
正解：B、D
解説：
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-5.7-en/innodb-system-tablespace.html
質問 # 78
Which three sets of item information are visible in the mysql system database? (Choose three.)
- A. performance monitoring information
- B. help topics
- C. plugins
- D. audit log events
- E. rollback segments
- F. information about table structures
- G. time zone information and definitions
正解：B、C、E
質問 # 79
Examine this statement and output:
Which two SQL statements can jsmith execute? (Choose two.)
- A. UPDATE world.country SET Name='all';
- B. UPDATE world.country SET Name='first' ORDER BY Name LIMIT
- C. UPDATE world.country SET Name=CONCAT('New ',Name);
- D. UPDATE world.country SET Name='new' WHERE Name='old';
- E. UPDATE world.country SET Name='one' LIMIT 1;
正解：A、D
質問 # 80
Which statement is true about displaying and retrieving data with MySQL Enterprise Monitor Query Analyzer?
- A. It is possible to filter a Query Analyzer view graph by database and by table.
- 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. It is possible to export statements included in a graph selection in CSV format.
- D. The Query Analyzer graph view range selector can extend to cover the same hour over multiple days.
正解：C
質問 # 81
You want to dump all databases with names that start with "db".
Which command will achieve this?
- A. mysqlpump --include-databases=db% --result-file=all_db_backup.sql
- B. mysqlpump --include-databases=db --result-file=all_db_backup.sql
- C. mysqlpump > all_db_backup.sql
- D. mysqlpump --include-tables=db.% --result-file=all_db_backup.sql
正解：B
質問 # 82
Examine this output:
Which change should optimize the number of buffer pool instances for this workload?
- A. Decrease the number of buffer pool instances to 1.
- B. Increase the number of buffer pool instances to 16.
- C. Decrease the number of buffer pool instances to 4.
- D. Increase the number of buffer pool instances to 32.
- E. Increase the number of buffer pool instances to 12.
正解：D
質問 # 83
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最新をゲットせよ！1Z0-908認定有効な試験問題集解答：https://drive.google.com/open?id=19rVSSN7eScsA5tLXIxY2uLqFOhXhQhab