Latest May 30, 2022 Real 1Z0-888 Exam Dumps Questions Valid 1Z0-888 Dumps PDF [Q79-Q97]

Rate this post

Latest May 30, 2022 Real 1Z0-888 Exam Dumps Questions Valid 1Z0-888 Dumps PDF

Oracle 1Z0-888 Exam Dumps – PDF Questions and Testing Engine

NEW QUESTION 79
Which statement describes how the relay log works?

when a slave receives a change from the master, it is processed first, and then recorded in the relay log.

It maintains a record of available master binary logs and the current executed log position.

It stores changes on the master, and relays them to the slave.

When a slave receives a change from the master, it is recorded in the relay log first and processed later.

NEW QUESTION 80
How does the InnoDB storage engine handle deadlocks when they are detected?

Both the affected transactions will be rolled back.

The affected transactions wait for innodb_lock_wait_timeout seconds, and then roll back.

One of the affected transactions will be rolled back, the other is allowed to proceed.

The transaction isolation level determines which transaction is rolled back.

The innodb_locks_unsafe_for_binlog setting determines which transaction is rolled back.

NEW QUESTION 81
Which two statements are true about InnoDB auto-increment locking? (Choose two.)

InnoDB never uses table-level locks.

InnoDB always protects auto-increment updates with a table-level lock

InnoDB does not use locks to enforce auto-increment uniqueness.

The auto-increment lock can be a table-level lock.

Some settings for innodb_autoinc_lock_mode can help reduce locking.

NEW QUESTION 82
How does the InnoDB storage engine handle deadlocks when they are detected?

Both the affected transactions will be rolled back.

The affected transactions wait for innodb_lock_wait_timeout seconds, and then roll back.

One of the affected transactions will be rolled back, the other is allowed to proceed.

The transaction isolation level determines which transaction is rolled back.

The innodb_locks_unsafe_for_binlog setting determines which transaction is rolled back.

NEW QUESTION 83
You are setting up a new installation of MySQL Server 5.7 (a GA release.) You have used a ZIP or TAR package to ensure that the mysqld binary, along with its support files, such as plug-ins and error messages, now exist on the host. Assume that the default datadir exists on the host.
You installed the binary in the default location (the default –basedir value) for your operating system.
Which step should you perform before defining your own databases and database tables?

Execute a command with a minimal form of: mysql –initialize

Create a configuration file containing default-storage-engine=InnoDB.

Set an exception in the host machine’s firewall to allow external users to talk to mysqld.

Create additional login accounts (so that everyone does not need to log in as root) and assign them appropriate privileges.

NEW QUESTION 84
Why should you be selective when granting the PROCESS privilege to an account?

It allows a client to process scripts.

It allows the use of stored routines.

It allows a client to see another user’s queries with the SHOW PROCESSLIST command.

It allows a client to control running processes on a server.

NEW QUESTION 85
You are installing MySQL Server 5.7 from a tarball package. You have already set up the correct PATH environment variable and configured your /etc/my.cnf file.
Which command will correctly prepare a data directory?

service mysqld prepare-init

mysqld_safe –initialize …

mysql -u root -p < support-files/mysqldb.sql

mysqld_safe –user=mysql

mysqld –initialize …

NEW QUESTION 86
You want to immediately stop access to a database server for remote user
‘mike’@’client.example.com’. This user is currently not connected to the server.
Which two actions can you take to stop any access from the user? (Choose two.)

Use ALTER USER `mike’@’client.example.com’ PASSWORD EXPIRE;

Use REVOKE ALL PRIVILEGES FROM `mike’@’client.example.com’;

Execute the mysql_secure_installation command.

Use DROP USER `mike’@’client.example.com’;

Use GRANT USAGE ON *.* TO `mike’@’client.example.com’ MAX_USER_CONNECTIONS=0;

Use ALTER USER `mike’@’client.example.com’ ACCOUNT LOCK;

NEW QUESTION 87
You have a MySQL instance running in a single cpu (1vCPU) VM in a shared infrastructure environment.
Your users are complaining that MySQL is sporadically slow and you have a suspicion that the VM infrastructure host is at fault due to resource contention.
You review the output of your scripts that monitor the database VM operating system during an extended period of slowdown.
What are the two most common indicators of the VM infrastructure host being at fault due to resource contention? (Choose two.)

10% CPU

90% RAM

9.1 five minute load average, 10% iowait

100% CPU use, 50% RAM

100% iowait

100% SWAP, 100% RAM

NEW QUESTION 88
Consider the key buffer in a MySQL server. Which two statements are true about this feature? (Choose two.)

It caches index blocks for MyISAM tables only.

It caches index blocks for all storage engine tables.

It is a global buffer.

It is set on a per-connection basis.

It caches index blocks for InnoDB tables only.

NEW QUESTION 89
An admin attempts to enforce stronger security by using these commands:

The admin then leaves the system running with the specified changes. What are two remaining security concerns?

validate_password_policycannot be set without restarting the MySQL instance.

The name of the dictionary file is too obvious.

The dictionary file word list is too short.

validate_password_dictionary_filecannot be set without restarting the MySQL instance.

The validate_passwordplug-in has not been loaded.

The dictionary file is an insecure location.

NEW QUESTION 90
old_alter_tableis disabled as shown.
mysql> SELECT @@old_alter_table;

Consider this statement on a RANGE-partitioned table:
mysql> ALTER TABLE orders DROP PARTITION p1, p3;
What is the outcome of executing this statement?

All data in p1 and p3 partitions is removed and the table definition is changed.

All data in p1 and p3 partitions is removed, but the table definition remains unchanged.

Only the first partition (p1) will be dropped because only one partition can be dropped at any time.

It results in a syntax error because you cannot specify more than one partition in the same statement.

NEW QUESTION 91
Consider the index information for the dept_emp table in the employee’s schema:

Which two conclusions can be made based on the output of the query?

There are three indexes on the table.

There is a redundant index on the dept_no column.

The secondary indexes are optimized for unique key look-ups.

The values on the emp_no column must be unique.

The selectivity of the dept_no column is the best of the indexed columns.

There is a redundant index on the emp_no column.

NEW QUESTION 92
The Performance Schema includes these tables related to status variables:

Which two facts are true about these tables? (Choose two.)

The variable values in global_status are the sum of those in status_by_thread grouped by the variable name.

All these tables have the same number of rows.

The global_status table is equivalent to the SHOW GLOBAL STATUS statement.

The variable values in status_by_account are the sum of those in status_by_host and status_by_user grouped by the variable name.

The session_status table is equivalent to status_by_thread for the current thread.

NEW QUESTION 93
Consider the table people with the definition:

The application uses a query such as:
SELECT * FROM people WHERE YEAR(Birthday) = 1980;
The query is not using an index.
Which two methods can be used to allow the query to use an index? (Choose two.)

Change the WHEREclause to Birthday BETWEEN 1980-01-01 AND 1980-12-31.

Add a functional index for YEAR(Birthday).

Execute ANALYZE TABLEto update the index statistics.

Add a generated column calculating YEAR(Birthday)and index that column.

Add FORCE INDEX (Birthday)to the query.

NEW QUESTION 94
A MySQL database uses all InnoDB tables and is configured as follows;

You will be setting up a replication slave by using mysqldump. You will need a consistent backup taken from your running production server. The process should have minimal impact to active database connections.
Which two arguments will you pass to mysqldump to achieve this?

–skip-opt

–lock-all-tables

–create-apply-log

–single-transaction

–master-data

NEW QUESTION 95
You attempt to connect to a MySQL Server by using the mysql client program. However, you receive this notice:

What would you run to fix the issue?

the mysql_upgrade script

the mysql client with the –ignore-password-hashing option

the mysql_secure_installation script to update server security settings

the mysql client with the –enable-cleartext-plugin option

the install plugin command for the mysql_cleartext_password plugin

NEW QUESTION 96
Consider the two partial outputs of the SHOW GLOBAL VARIABLES command from a master and slave server:
Master:

Slave:

There is a problem with the slave replicating from the master. Which statement describes the cause of the problem?

The log_bin variable is set to OFF on the slave.

server_id is not unique.

The max_connections variable on the slave needs to be increased.

The shared_memory_base_name variable must match the master.

The version of the slave is newer that the version of the master.

NEW QUESTION 97
Examine the mydata table and SELECT statements:

You issue:
mysql> begin;
mysql> update mydata set a=0 where b=3;
How many rows are now protected by locks with the default InnoDB configuration?

one

one row and a next-key lock for supremum

one row and a gap-lock

five

Reliable MySQL Database Administration 1Z0-888 Dumps PDF May 30, 2022 Recently Updated Questions: https://www.actualcollection.com/1Z0-888-exam-questions.html

Leave a comment Cancel reply