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MYSQL 8.0 OCP 1z0-908 题库.pdf
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MySQL 8.0 OCP 1Z0-908
Q1.Examine this command, which executes successfully:
mysqlbackup --user=dba --password --port=3306 --with-timestamp --backup-dir=/export/backups
backup-and-apply-log
Which statement is true?
A)The backup accesses the MySQL server files by using a pre-existing connection.
B)The database server is put into a read-only state for the duration of the backup.
C)An offline backup of InnoDB tables is taken.
D)The backup can be impacted when DDL operations run during the backup.
Answer:D
Q2.You reconfigure and start a slave that was not replicating for several days.
The configuration file and CHANGE MASTER command are correct. Examine the GTID information from both master
and slave:
Master:
Gtids_executed: aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-321,
bbbbbbbb-bbbb-bbbb-bbbbbbbbbbbb:1-50,
Cccccccc-cccc-cccc-cccc-cccccccccccc:1234-1237
Gtids_purged: aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-100,
bbbbbbbb-bbbb-bbbb-bbbbbbbbbbbb:1-10,
cccccccc-cccc-cccc-cccc-cccccccccccc:1234-1237
Slave:
Gtids_executed: aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-160,
cccccccc-cccc-cccc-cccc-cccccccccccc:1234-1237
Gtids_executed: aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-70,
cccccccc-cccc-cccc-cccc-cccccccccccc:1234-1237
Which statement is true?
A)Replication will fail because the master does not have the required transaction with
bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb GTIDs in its binary logs.
B)Replication will fail because the master has already purged transactions with cccccccc-cccc-cccc-cccc-cccccccccc
GTIDs.
C)Replication will fail because of inconsistent numbers in cccccccc-cccc-cccc-cccc-cccccccccccc GTIDs.
D)Replication will fail because the slave has purged more aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa transactions than the
master.
F)Replication will work.
Answer:A
Q3.Which two authentication plugins require the plain text client plugin for authentication to work?
A)Windows Native authentication
B)PAM authentication
C)LDAP SASL authentication
D)LDAP authentication
E)SHA256 authentication
F)MySQL Native Password
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