[2023] Pass Oracle 1z1-908 Premium Files Test Engine pdf – Free Dumps Collection [Q79-Q99]

Posted On September 22, 2023

[2023] Pass Oracle 1z1-908 Premium Files Test Engine pdf – Free Dumps Collection

New 2023 Realistic 1z1-908 Dumps Test Engine Exam Questions in here

Oracle 1z1-908 certification exam covers a wide range of topics that include MySQL architecture, installation and configuration, backup and recovery, security management, performance tuning, and high availability. 1z1-908 exam is designed to test the candidate’s ability to manage and administer MySQL databases efficiently and effectively. 1z1-908 exam consists of multiple-choice questions and performance-based scenarios that test the candidate’s practical skills.

NO.79 Examine this statement and output:

Which two SQL statements can jsmith execute? (Choose two.)

UPDATE world.country SET Name=’all’;

UPDATE world.country SET Name=’one’ LIMIT 1;

UPDATE world.country SET Name=’new’ WHERE Name=’old’;

UPDATE world.country SET Name=CONCAT(‘New ‘,Name);

UPDATE world.country SET Name=’first’ ORDER BY Name LIMIT

NO.80 Which two MySQL Shell commands are excluded from the InnoDB Cluster creation procedure? (Choose two.)

dba.configureInstance()

cluster.setPrimaryInstance()

dba.configureLocalInstance()

cluster.forceQuorumUsingPartitionOf()

cluster.addInstance()

dba.createCluster()

dba.checkInstanceConfiguration()

Explanation/Reference: https://docs.oracle.com/cd/E17952_01/mysql-shell-8.0-relnotes-en/news-8-0-16.html

NO.81 You have configured GTID-based asynchronous replication with one master and one slave.
A user accidentally updated some data on the slave.
To fix this, you stopped replication and successfully reverted the accidental changes. Examine the current GTID information:

You must fix GTID sets on the slave to avoid replicating unwanted transactions in case of failover. Which set of actions would allow the slave to continue replicating without erroneous transactions?

RESET MASTER;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;

SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312,bbbbbbbb- bbbb-bbbb-bbbb-bbbbbbbbbbbb:1-9; SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;

RESET SLAVE;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-3820;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10300;

RESET MASTER;
SET GLOBAL gtid_purged-aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;

RESET SLAVE;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;

NO.82 Which statement is true about MySQL Enterprise Transparent Data Encryption (TDE)?

MySQL TDE uses an appropriate keyring plugin to store the keys in a centralized location.

Both MyISAM and InnoDB tables can be encrypted by setting the keyring_engine = ALL variable in the MySQL configuration file.

Lost tablespace encryption keys can be regenerated only if the master database key is known or present in the Key Vault specification.

TDE can encrypt InnoDB and MyISAM tables only when the tables are stored in the SYSTEM tablespace.

NO.83 A MySQL server is monitored using MySQL Enterprise Monitor’s agentless installation.
Which three features are available with this installation method? (Choose three.)

MySQL Replication monitoring

network-related information and network characteristics

MySQL Query Analysis data

CPU utilization

security-related advisor warnings

operating system memory utilization

disk usage and disk characteristics including disk advisors warnings

NO.84 Which three requirements must be enabled for group replication? (Choose three.)

slave updates logging

semi-sync replication plugin

primary key or primary key equivalent on every table

binary log checksum

binary log ROW format

binary log MIXED format

replication filters

NO.85 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?

The instance deployed on host3must be rebuilt with a backup from the primary instance.

The cluster is running and there is at least one ONLINEinstance.

The instance deployed on host3must be synchronized from a donor deployed on host1by using the command cluster.addInstance(‘host1:3377’).

It is possible to determine the most up-to-date instance by comparing different global transaction identifier (GTID) sets with GTID_SUBSET(set1,set2).

The active session instance is invalid and must be re-created by using the command shell.connect (‘host3:3377’).

NO.86 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.)

All databases are backed up to the output file.

All non-active binary logs are removed from the master.

All binary logs are deleted from the master.

All binary logs are backed up and then deleted.

All databases, excluding master metadata, are backed up to the output file.

All details regarding deleted logs and master metadata are captured in the output file.

NO.87 You have configured GTID-based asynchronous replication with one master and one slave.
A user accidentally updated some data on the slave.
To fix this, you stopped replication and successfully reverted the accidental changes. Examine the current GTID information:

You must fix GTID sets on the slave to avoid replicating unwanted transactions in case of failover. Which set of actions would allow the slave to continue replicating without erroneous transactions?

RESET MASTER;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;

SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312,bbbbbbbb- bbbb-bbbb-bbbb-bbbbbbbbbbbb:1-9; SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;

RESET SLAVE;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-3820;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10300;

RESET MASTER;
SET GLOBAL gtid_purged-aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-2312;
SET GLOBAL gtid_executed=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;

RESET SLAVE;
SET GLOBAL gtid_purged=aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1-10167;

NO.88 Which two are valid uses for binary logs on a MySQL instance? (Choose two.)

recording the order in which queries are issued

audit of all queries

point-in-time recovery

replication

logging the duration and locks for all queries

NO.89 You encountered an insufficient privilege error in the middle of a long transaction.
The database administrator is informed and immediately grants the required privilege:
GRANT UPDATE ON world.city TO ‘user1’;
How can you proceed with your transaction with the least interruption?

Roll back the transaction and start the transaction again in the same session.

Re-execute the failed statement in your transaction.

Change the default database and re-execute the failed statement in your transaction.

Close the connection, reconnect, and start the transaction again.

NO.90 You have an InnoDB Cluster configured with three servers.
Examine this command, which executes successfully:
mysqldump -uroot -p -d mydatabase > mydatabase_backup.sql
Due to data loss, the cluster is initialized and a restore is attempted resulting in this error:
ERROR 13176 (HY000) at line 23: Cannot update GTID_PURGED with the Group Replication plugin running Which two actions, either one of which, can fix this error and allow a successful restore of the cluster? (Choose two.)

Stop all instances except the primary read/write master instance and run the restore.

Remove the @@GLOBAL.gtid_purged statement from the dump file.

Create the backup by using the –set-gtid-purged=OFF option.

Remove the group replication plugin from each instance before restoring.

Remove the @@GLOBAL.gtid_executed statement from the dump file.

Restore using the –set-gtid-purged=OFF option.

NO.91 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?

The instance deployed on host3 must be rebuilt with a backup from the primary instance.

The cluster is running and there is at least one ONLINE instance.

The instance deployed on host3 must be synchronized from a donor deployed on host1 by using the command cluster.addInstance(‘host1:3377’).

It is possible to determine the most up-to-date instance by comparing different global transaction identifier (GTID) sets with GTID_SUBSET(set1,set2).

The active session instance is invalid and must be re-created by using the command shell.connect (‘host3:3377’).

NO.92 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.)

ibdatal:12M;ibdata2:12M;ibdata3:12M

ibdatal:12M:autoextend;ibdata2:12M:autoextend

ibdatal:12M:autoextend

ibdatal:12M;ibdata2:12M:autoextend

ibdatal:12M

ibdatal:12M;/tmp/ibdata2:12M:autoextend

NO.93 Examine this statement, which executes successfully:

You want to improve the performance of this query:

Which change enables the query to succeed while accessing fewer rows?

ALTER TABLE world.city ADD SPATIAL INDEX (Name);

ALTER TABLE world.city ADD SPATIAL INDEX (Population);

ALTER TABLE world.city ADD INDEX (Population);

ALTER TABLE world.city ADD INDEX (Name);

ALTER TABLE world.city ADD FULLTEXT INDEX (Name);

ALTER TABLE world.city ADD FULLTEXT INDEX (Population);

Explanation/Reference: https://dev.mysql.com/doc/refman/5.7/en/creating-spatial-indexes.html

NO.94 You execute this command:
shell> mysqlpump –exclude-databases=% –users
Which statement is true?

It creates a logical backup of all MySQL user accounts.

It creates a logical backup of all metadata, but contains no table data.

It returns an error because the mysqldump command should have been used.

It creates a logical backup of only the users database.

NO.95 Examine this command and output:

Which two options will improve the security of the MySQL instance? (Choose two.)

Remove group read/write privileges from the private_key.pemfile.

Remove world read privileges from the server-cert.pemcertificate file.

Change the group ownership of the mysqldirectory to the mysqluser group.

Remove world read privileges from the public_key.pemfile.

Change the parent directory owner and group to mysql.

Remove the world read/execute privilege from the accountingdirectory.

NO.96 Examine the modified output:

Seconds_Behind_ Mastervalue is steadily growing.
What are two possible causes? (Choose two.)

The master is most probably too busy to transmit data and the slave needs to wait for more data.

One or more large tables do not have primary keys.

This value shows only I/O latency and is not indicative of the size of the transaction queue.

The master is producing a large volume of events in parallel but the slave is processing them serially.

The parallel slave threads are experiencing lock contention.

Explanation

NO.97 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.)

All databases are backed up to the output file.

All non-active binary logs are removed from the master.

All binary logs are deleted from the master.

All binary logs are backed up and then deleted.

All databases, excluding master metadata, are backed up to the output file.

All details regarding deleted logs and master metadata are captured in the output file.

NO.98 Which three sets of item information are visible in the mysql system database? (Choose three.)

help topics

performance monitoring information

plugins

rollback segments

information about table structures

time zone information and definitions

audit log events

NO.99 Examine this statement and output:

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

QN = 3

QN = 5

QN = 1

QN = 4

QN = 2

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To take the Oracle 1Z0-908 certification exam, candidates must have a strong understanding of MySQL database architecture and administration, as well as experience working with MySQL databases in a production environment. 1z1-908 exam consists of 70 multiple-choice questions, and candidates have two hours to complete it. The passing score for the exam is 66%, and candidates who successfully pass the exam will earn the Oracle Certified Professional, MySQL 8.0 Database Administrator certification.

Updated Official licence for 1z1-908 Certified by 1z1-908 Dumps PDF: https://www.exams4sures.com/Oracle/1z1-908-practice-exam-dumps.html