1z1-908別格な問題集をダウンロードして無料で最新の（1z1-908テスト問題集をゲット) [Q58-Q81]

1z1-908別格な問題集をダウンロードして無料で最新の（1z1-908テスト問題集をゲット2023年06月09日)

1z1-908問題集は合格保証します合格できる1z1-908試験問題2023年更新

Oracle 1Z0-908試験に合格することで、候補者はMySQL 8.0の深い理解を持ち、データベースを効果的に管理および維持できることを証明します。認定はまた、プロフェッショナルがMySQL 8.0の最新の開発動向について最新情報を維持することを助け、データベース管理の新しいキャリア機会を開拓することができます。

質問 # 58
Examine this command, which executes successfully:
shell> mysqldump --master-data=2 --single-transaction --result-file=dump.sql mydb Which two statements are true? (Choose two.)

A. It is a cold backup.
B. This option uses the READ COMMITTED transaction isolation mode.
C. It executes flush tables with read lock.
D. It enforces consistent backups for all storage engines.
E. The backup created is a consistent data dump.

正解：B、C

質問 # 59
Which two statements are true about the binary log encryption feature? (Choose two.)

A. It can be activated per session.
B. It requires a keyring plugin.
C. When enabled it encrypts existing binary logs.
D. It encrypts any connecting slaves connection thread.
E. It can be set at run time.

正解：A、D

質問 # 60
Which two are characteristics of snapshot-based backups? (Choose two.)

A. Snapshot-based backups greatly reduce time during which the database and applications are unavailable.
B. Snapshot backups can be used only in virtual machines.
C. A separate physical copy must be made before releasing the snapshot backup.
D. There is no need for InnoDB tables to perform its own recovery when restoring from the snapshot backup.
E. The frozen file system can be cloned to another virtual machine immediately into active service.

正解：B、C

質問 # 61
You are using mysqlcheck for server maintenance.
Which two statements are true? (Choose two.)

A. The mysqlcheck --repair --all-databases command can repair an InnoDB corrupted table.
B. The mysqlcheck command can be renamed mysqlrepair so that it repairs tables by default.
C. The mysqlcheck --check --all-databases command takes table write locks while performing a series of checks.
D. The mysqlcheck --optimize --all-databases command reclaims free space from table files.
E. The mysqlcheck --analyze --all-databases command performs a series of checks to spot eventual table corruptions.

正解：B、E

質問 # 62
What does the binlog dump thread do?

A. It reads the relay log and executes the events contained in them.
B. It connects to the master and asks it to send updates recorded in its binary logs.
C. It acquires a lock on the binary log for reading each event to be sent to the slave.
D. It monitors and schedules the rotation/deletion of the binary logs.

正解：B

質問 # 63
Examine this statement:
mysql> DROP ROLE r_role1, r_role2;
Which two are true? (Choose two.)

A. You must revoke all privileges from r_role1 and r_role2 before dropping the roles.
B. Existing connections can continue to use the roles' privileges until they reconnect.
C. You must revoke r_role1 and r_role2 from all users and other roles before dropping the roles.
D. It fails if at least one of the roles does not exist.
E. It fails if any of the roles is specified in the mandatory_roles variable.
F. It fails if you do not have the ADMIN OPTION of the roles r_role1 and r_role2.

正解：B、F

質問 # 64
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 graph view range selector can extend to cover the same hour over multiple days.
C. It is possible to export statements included in a graph selection in CSV format.
D. The Query Analyzer can plot a CPU utilization graph for remote hosts with a MySQL Enterprise Service Manager's built-in Agent installation.

正解：C

質問 # 65
Examine these entries from the general query log:

All UPDATE statements reference existing rows.
Which describes the outcome of the sequence of statements?

A. A deadlock occurs after innodb_lock_wait_timeout seconds.
B. All statements execute without error.
C. Connection 25 experiences a lock wait timeout.
D. Connection 24 experiences a lock wait timeout.
E. A deadlock occurs immediately.

正解：A

質問 # 66
Examine this statement and output:

You must try to reduce query execution time.
Which two queries should you focus on? (Choose two.)

A. QN = 2
B. QN = 4
C. QN = 1
D. QN = 5
E. QN = 3

正解：A、C

質問 # 67
Examine this SQL statement:

Which set of privileges will allow Tom to execute this SQL statement?

A. GRANT UPDATE ON 'world'.* TO 'tom'@'%';
GRANT ALL PRIVILEGES ON 'world'.'country' TO 'tom'@'%';
B. GRANT ALL PRIVILEGES ON 'world'.'city' TO 'tom'@'%';
GRANT SELECT ('code') ON 'world'.'country' TO 'tom'@'%';
C. GRANT UPDATE ON 'world'.'city' TO 'tom'@'%'; GRANT SELECT ON 'world'.* TO 'tom'@'%';
D. GRANT UPDATE ON 'world'.'city' TO 'tom'@'%'; GRANT SELECT ON 'world'.'country' TO 'tom'@'%';

正解：D

質問 # 68
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. sys
C. information_schema
D. employee
E. world

正解：B、C

質問 # 69
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 metadata. Please use the most up to date instance: ‘host1:3377’. (RuntimeError) Which statement is true?

A. The active session instance is invalid and must be re-created by using the command shell.connect (‘host3:3377’).
B. The cluster is running and there is at least one ONLINEinstance.
C. It is possible to determine the most up-to-date instance by comparing different global transaction identifier (GTID) sets with GTID_SUBSET(set1,set2).
D. The instance deployed on host3must be synchronized from a donor deployed on host1by using the command cluster.addInstance(‘host1:3377’).
E. The instance deployed on host3must be rebuilt with a backup from the primary instance.

正解：D

質問 # 70
You reconfigure and start a slave that was not replicating for several days.
The configuration file and CHANGE MASTERcommand are correct.
Examine the GTID information from both master and slave:

Which statement is true?

A. Replication will fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the master.
B. Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.
C. Replication will work.
D. Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc- cccc-ccccccccccccGTIDs.
E. Replication will fail because the master does not have the required transaction with bbbbbbbb-bbbb- bbbb-bbbb-bbbbbbbbbbbbGTIDs in its binary logs.

正解：A

解説：
Explanation/Reference: https://bugs.mysql.com/bug.php?id=86643

質問 # 71
You made some table definition changes to a schema in your MySQL Server.
Which two statements reflect how MySQL Server handles the table definition changes? (Choose two.)

A. The metadata is serialized in JSON format in Serialized Dictionary Information (SDI).
B. MySQL keeps InnoDB metadata changes in .sdi files in datadir.
C. MySQL writes SDI to the binary log for distributed backups.
D. MySQL implicitly executes FLUSH TABLES and stores a snapshot backup of the metadata.
E. MySQL Server stores a copy of the serialized data in the InnoDB user tablespace.

正解：A、E

質問 # 72
Which two MySQL Server accounts are locked by default? (Choose two.)

A. any user set as DEFINER for stored programs
B. any user created without a password
C. any internal system accounts
D. any new ROLE accounts
E. any user created with a username, but missing the host name

正解：A、C

質問 # 73
Which two statements are true about raw binary backups? (Choose two.)

A. The resulting files are easily human readable.
B. The data format is identical to how MySQL stores the data on disk.
C. They are converted to a highly compressible binary format.
D. They are faster than logical backups because the process is a simple file or file system copy.
E. They are required to obtain FIPS security compliance.

正解：A、B

質問 # 74
Binary log events for the ‘mydb1’ schema must be copied to a different schema name ‘mydb2’.
Which command will do this?

A. mysqlbinlog --datebase=mydb1 --database=mydb2 | mysql
B. mysqlbinlog --read-from-remote-server --raw | sed ‘s/mydb1/mydb2/g’ | mysql
C. mysqlbinlog --rewrite-db=’mydb1->mydb2’ | mysql
D. mysqlbinlog --rewrite-db=’mydb1’ --rewrite-db=’mydb2’ | mysql

正解：B

質問 # 75
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 parallel slave threads are experiencing lock contention.
C. This value shows only I/O latency and is not indicative of the size of the transaction queue.
D. One or more large tables do not have primary keys.
E. The master is producing a large volume of events in parallel but the slave is processing them serially.

正解：C、E

質問 # 76
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-$(date +%Y%m%d).sql
C. mysqlpump --all-databases > full-backup-$(date +%Y%m%d).sql
D. mysqldump --single-transaction > full-backup-$(date +%Y%m%d).sql

正解：B

質問 # 77
Examine this command and output:

Which two statements are true? (Choose two.)

A. The lock is at the metadata object level.
B. The lock is an intentional lock.
C. The lock is a row-level lock.
D. The lock is at the table object level.
E. The lock is a shared lock.
F. The lock is an exclusive lock.

正解：D、F

質問 # 78
Where is the default data directory located after installing MySQL using RPM on Oracle Linux 7?

A. /etc/my.cnf
B. /usr/bin
C. /usr
D. /usr/mysql
E. /var/lib/mysql

正解：E

質問 # 79
There are five MySQL instances configured with a working group replication.
Examine the output of the group members:

Which two statements are true about network partitioning in the cluster? (Choose two.)

A. A manual intervention to force group members to be only the working two instances is required.
B. The group replication will buffer the transactions on the online nodes until the unreachable nodes return online.
C. The cluster will shut down to preserve data consistency.
D. The cluster has built-in high availability and updates group_replication_ip_whitelistto remove the unreachable nodes.
E. There could be both a 2 node and 3 node group replication still running, so shutting down group replication and diagnosing the issue is recommended.

正解：C、D

質問 # 80
Examine this command, which executes successfully:

Which two statements are true? (Choose two.)

A. The backup operation will finish only when backup-and-apply-log is executed.
B. A single-file backup is created.
C. The --backup-dir option holds temporary output, status, and metadata files.
D. The backup operation will finish only when apply-log is executed.
E. A raw backup is created.

正解：C、D

質問 # 81
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Oracle 1Z0-908試験は、MySQL 8.0データベース環境で働く個人のスキルと知識を評価するために設計された難しい認定テストです。試験の準備には、MySQL 8.0のドキュメントに精通し、MySQLシェル、構成、および管理ツールの使用を練習する必要があります。Oracle 1Z0-908試験に合格すると、Oracle認定プロフェッショナル、MySQL 8.0データベース管理者の称号が授与され、MySQL 8.0サーバーを最適な精度、スピード、およびセキュリティで処理する能力が証明されます。

Oracle 1Z0-908の試験に合格することは、MySQLデータベース管理者として働く個人にとって貴重な資格です。認定は、個人がMySQLデータベースを効果的に管理するために必要なスキルと知識を持っていることを雇用主やクライアントに示し、キャリアアップの機会や高い給与につながることがあります。

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