1z1-908試験問題集、1z1-908練習テスト問題 [Q57-Q77]

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1z1-908試験問題集、1z1-908練習テスト問題

PDF問題（2023年最新）実際のOracle 1z1-908試験問題


Oracle 1z1-908認定試験は、MySQLデータベースを効果的に管理および管理する能力を測定する包括的なテストです。この試験には70の多肢選択問題があり、105分で完了する必要があります。試験に合格するには、少なくとも64％のマークを獲得する必要があります。認定試験は、英語や日本語を含む複数の言語で利用可能です。Oracle 1z1-908認定は、MySQLデータベース管理の専門知識を証明する業界で認められた資格です。これにより、キャリアの機会を拡大し、収益を増やすことができます。

 

質問 # 57
Which four connection methods can MySQL clients specify with the --protocol option when connecting to a MySQL server? (Choose four.)

  • A. PIPE
  • B. IPv6
  • C. TCP
  • D. FILE
  • E. MEMORY
  • F. SOCKET
  • G. DIRECT
  • H. IPv4

正解：A、C、E、F


質問 # 58
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 binary logs are deleted from the master.
  • D. All binary logs are backed up and then deleted.
  • E. All databases, excluding master metadata, are backed up to the output file.
  • F. All details regarding deleted logs and master metadata are captured in the output file.

正解：C、E


質問 # 59
Which three actions are effective in capacity planning? (Choose three.)

  • A. buying more CPU
  • B. buying more disk
  • C. monitoring OS resources for patterns
  • D. adding circular replication nodes for increased DML capability
  • E. basing expected growth on an average of the last 3 years
  • F. consulting the application team about any future projects and use
  • G. buying more RAM
  • H. upgrading to the latest application version

正解：C、E、F


質問 # 60
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. world
  • D. employee
  • E. information_schema

正解：B、E

解説：
Explanation/Reference: https://mysqlserverteam.com/introducing-mysqlpump/


質問 # 61
Examine these commands and output:

Which connection ID is holding the metadata lock?

  • A. 0
  • B. 1
  • C. 2
  • D. 3
  • E. 4
  • F. 5

正解：B


質問 # 62
You plan to install MySQL Server by using the RPM download.
Which two statements are true? (Choose two.)

  • A. You can find the root password in the error log after the first start.
  • B. You must manually initialize the data directory.
  • C. MySQL uses the RPM relocatable installation target feature.
  • D. You can provide the root password interactively.
  • E. The functionality is split among several RPM package files.
  • F. The MySQL RPM package installation supports deploying multiple MySQL versions on the same host.

正解：A、F


質問 # 63
Examine this query and output:

Which two statements are true? (Choose two.)

  • A. The query returns exactly 125 rows.
  • B. 35 rows from the city table are included in the result.
  • C. The optimizer estimates that 51 rows in the country table have Continent = 'Asia'.
  • D. The country table is accessed as the first table, and then joined to the city table.
  • E. It takes more than 8 milliseconds to sort the rows.

正解：B、C


質問 # 64
Examine these statements and output:

Which statement is true?

  • A. The user failed to define a username and the connecting username defaulted to ‘’@’%’.
  • B. The user is authorized as the accounting@localhostuser.
  • C. The user is authenticated as the anonymous proxy user ‘’@’%’.
  • D. The user is logged in with --user=accountingas an option.
  • E. The user is authorized as the rsmith@localhostuser.

正解：E


質問 # 65
Which statement is true about InnoDB persistent index statistics?

  • A. Execution plans based on transient index statistics improve precision when innodb_stats_persistent_sample_pages is increased.
  • B. Updating index statistics is an I/O expensive operation.
  • C. Increasing innodb_stats_persistent_sample_pages determines higher pages scanning speed, at the cost of increased memory usage.
  • D. Index statistics are calculated from pages buffered in the buffer pool for tables with InnoDB storage engine.
  • E. Setting innodb_stats_auto_recalc=ON causes statistics to be updated automatically when a new index is created.
  • F. Tables are scanned and index statistics recalculated when an instance is restarted.

正解：A


質問 # 66
Which two statements are true about InnoDB data-at-rest encryption? (Choose two.)

  • A. It enforces encryption from disk to memory and over network transmission.
  • B. It supports all indexes transparently.
  • C. It decrypts data for use in memory.
  • D. It supports only non-blob datatypes.
  • E. It does not support the transportable tablespaces feature.

正解：B、C


質問 # 67
Examine this command, which executes successfully:
cluster.addInstance('<user>@<host>:<port>', {recoveryMethod: 'clone'})
Which three statements are true? (Choose three.)

  • A. InnoDB redo logs must not rotate for the duration of the execution; otherwise, the recovery will fail.
  • B. It is always slower than {recoveryMethod: 'incremental'}.
  • C. The account used to perform this recovery needs the BACKUP_ADMIN privilege.
  • D. A new instance is installed, initialized, and provisioned with data from an instance already in the cluster and joined to the cluster.
  • E. A target instance must exist, then it will be provisioned with data from an instance already in the cluster and joined to the cluster.
  • F. InnoDB tablespaces outside the datadir are able to be cloned.

正解：A、B、C


質問 # 68
Which two statements are true about using MySQL Enterprise Monitor Query Analyzer? (Choose two.)

  • A. It is possible to import data into the Query Analyzer from heterogeneous sources, such as CSV.
  • B. It is possible to list and analyze statements in an arbitrary graph range selection from timeseries graphs.
  • C. It is possible to retrieve a normalized statement, but never the exact statement that was executed.
  • D. It is possible to configure the Query Analysis built-in advisor to get notified about slow query execution.
  • E. The single query QRTi pie chart in the Query Analyzer view is based on the average execution of all statements.

正解：B、D


質問 # 69
Which two MySQL Server accounts are locked by default? (Choose two.)

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

正解：A、C


質問 # 70
Examine this statement and output:

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

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

正解：C、D


質問 # 71
MySQL programs look for option files in standard locations.
Which method will show the option files and the order in which they are read?

  • A. shell> mysqladmin --debug
  • B. shell> mysql --print-defaults
  • C. mysql> SHOW GLOBAL VARIABLES;
  • D. shell> mysqld --help --verbose

正解：A


質問 # 72
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 will automatically rejoin the cluster when connectivity is re-established.
  • C. The instance deployed on host3 is expelled from the cluster and must be rejoined using cluster.addInstance ('host3:3377')
  • 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>).

正解：B、F


質問 # 73
Examine this statement, which executes successfully:

Now examine this query:

Which two statements can do this? (Choose two.)

  • A. ALTER TABLE employees -
    ADD INDEX ((CAST(birth_date->>'$.month' AS unsigned)));
  • B. ALTER TABLE employees -
    ADD COLUMN birth_month tinyint unsigned GENERATED ALWAYS AS (MONTH(birth_date)) VIRTUAL NOT NULL, ADD INDEX (birth_month);
  • C. ALTER TABLE employees -
    ADD COLUMN birth_month tinyint unsigned GENERATED ALWAYS AS (birth_date->>'$.month') VIRTUAL NOT NULL, ADD INDEX (birth_month);
  • D. ALTER TABLE employees -
    ADD INDEX (birth_date);
  • E. ALTER TABLE employees -
    ADD INDEX ((MONTH(birth_date)));
  • F. ALTER TABLE employees -
    ADD INDEX (birth_date DESC);

正解：C、F


質問 # 74
Which two statements are true about InnoDB data-at-rest encryption? (Choose two.)

  • A. It enforces encryption from disk to memory and over network transmission.
  • B. It supports all indexes transparently.
  • C. It decrypts data for use in memory.
  • D. It supports only non-blob datatypes.
  • E. It does not support the transportable tablespaces feature.

正解：B、C

解説：
Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-8.0-en/faqs-tablespace-encryption.html


質問 # 75
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 carries out a normal shutdown process, such as mysqladmin shutdown.
  • 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 and kill -9 are effectively the same forced shutdown that risk committed transactions not written to disk.
  • D. kill -15 should be avoided. Use other methods such as mysqladmin shutdown or systemctl stop mysqld.

正解：A


質問 # 76
You want to check the values of the sort_buffer_size session variables of all existing connections.
Which performance_schema table can you query?

  • A. user_variables_by_thread
  • B. session_variables
  • C. global_variables
  • D. variables_by_thread

正解：B


質問 # 77
......


Oracle 1z1-908試験は、90問の多肢選択問題から構成され、150分以内に完了する必要があります。試験は英語と日本語で利用可能で、認定テストセンターやオンラインで受験することができます。試験に合格するには、MySQLの概念や技術についての堅固な理解と、プロダクション環境でMySQLデータベースを操作した経験が必要です。試験の準備には、Oracleの公式トレーニングコース、学習資料、模擬試験、第三者のリソースやコミュニティフォーラムを活用することができます。


Oracle 1z1-908の試験に合格することは、データベース管理のキャリアを進めたいプロフェッショナルにとって大きな成果です。高度に競争的な求人市場で目立つことができ、MySQL 8.0データベースの管理と保守の熟練度を証明することができます。この認証を取得することで、より高い給与、より良い求人機会、そしてより大きな職場満足度を得ることができます。新しいデータベース管理者であっても、経験豊富なデータベース管理者であっても、Oracle 1z1-908試験はあなたのスキルを検証し、キャリア目標を達成するのに役立ちます。

 

更新された2023年05月合格させる1z1-908試験リアル練習テスト問題：https://www.passtest.jp/Oracle/1z1-908-shiken.html

問題集返金保証付きの1z1-908問題集には90%オフ：https://drive.google.com/open?id=1Ek_cxfcKhwluSTRCDHkdLUBrZWl0mIpk

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