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Exam Content
The examination consists of 75 Questions. Candidates should score 58% to clear the examination.
Formats of Question
- Multiple Response Multiple-choice questions: Two or More Correct response from the given options best suits the statement or answers the question.
- Single Response Multiple-choice questions: Only One correct response from the given options best suits the statement or answers the question.
Exam Duration
Candidates will have 120 minutes for attempting 75 questions. So, it becomes important for the candidates to time-box the exam and restrict spending too much time on one question or one topic.
Exam Results
The Oracle 1z0-888 certification is a pass or fail examination and the candidate has to score a minimum of 58% to be termed as pass in the certification exam.
Candidates will receive an email with the result from Oracle within 30 minutes of completing the Certification exam. Exam results are also available on the CertView web portal and the candidate can visit the portal and login to the CertView account to view the exam results and get further details.
NEW QUESTION 90
A crucial database, 'db_prod', just disappeared from your production MySQL instance.
In reviewing the available MySQL logs (General, Audit, or Slow) and your own application-level logs, you identified this command from a customer facing application:
SELECT id FROM users WHERE login='payback!';DROP DATABASE db_prod;'
Which three methods could have been used to prevent this SQL injection attack from happening?
- A. removing any remaining anonymous accounts from your MySQL instance
- B. changing all passwords for the MySQL account 'root'@'%'immediately after losing an employee who knew the current password
- C. validating all user input before sending it to the database server
- D. using a hashing or encryption method to secure all user passwords in your MySQL tables
- E. giving limited privileges to accounts used by application servers to interact with their backing databases
- F. writing your client code to properly escape all user input
- G. using SSL/TLS on your outward facing web servers (https://) to encrypt all user sessions
Answer: A,B,D
NEW QUESTION 91
The MySQL installation includes the mysql_config_editorutility for managing login paths stored in a
.mylogin.cnffile.
Which two are true about the login path feature?
- A. It provides means to help avoid accidentally exposing the MySQL login details.
- B. A .mylogin.cnffile can store at most one login path.
- C. A .mylogin.cnf file can be edited using a text editor, such as vim or Notepad++.
- D. It provides a FIPS-compliant keyring for storing MySQL login details.
- E. mysql_config_editoris the only MySQL-provided utility that can print the values stored in
.mylogin.cnf. - F. It is an alternative to storing the MySQL login details in a my.cnffile.
Answer: A,F
Explanation:
Explanation/Reference:
Reference: https://dev.mysql.com/doc/refman/8.0/en/mysql-config-editor.html
NEW QUESTION 92
You are asked to examine user accounts and find:
Which two statements will best secure this environment? (Choose two.)
- A. ALTER USER bob PASSWORD = `secret_password';
- B. DROP USER `'@'localhost';
- C. REVOKE ALL PRIVILEGES FROM `'@'localhost';
- D. ALTER USER `root'@'localhost' ACCOUNT LOCK;
- E. ALTER USER `'@'localhost' PASSWORD = `secret_password';
- F. ALTER USER bob@'%' IDENTIFIED BY `secret_password';
Answer: A,F
NEW QUESTION 93
What does the possible_keys column in this output denote?
- A. if it is possible for you to include any indexes in your query
- B. if there are any indexes that may be used to solve this query
- C. whether there are any indexes on the tables that you are querying
- D. whether there are any indexes in your query
Answer: A
NEW QUESTION 94
An administrator installs MySQL to run under a mysql OS account. The administrator decides to disable logins to the mysql account by using /nologin or /bin/false as the user's shell setting.
Which statement is true?
- A. This prevents mysqld from starting when standard startup scripts are used.
- B. The mysql user needs a login and its home directory must be the base directory of the installation.
- C. This prevents creation of a command shell with the mysql account, while allowing mysqld to run.
- D. The OS needs to allow logging in as mysql so that administrative tasks can be performed.
Answer: B
NEW QUESTION 95
You have a MySQL instance with the following variables in the /etc/my.cnf file:
You issue these statements:
USE prices;
UPDATE sales.january SET amount=amount+1000;
An hour after excluding the statements, you realize that you made a mistake and you want to go to the binary log and look at the statements again.
Which statement is true? (Choose two.)
- A. Nothing was written to the binary log because you cannot perform a calculation in a query without enclosing the statement in single quotation marks.
- B. The statement would fail because you cannot update more than one row at a time when using -binlogformat = ROW.
- C. You would receive an error on the statement because you cannot update a different database that what is specified with the USE statement.
- D. Nothing is logged because you are executing an UPDATE statement that will cause changes to more than one row, and you do not have the --binlog-format value set to STATEMENT.
- E. The changes caused by the UPDATE statement are logged to the binary log because the instance is using --binlog-format = ROW
Answer: A,D
NEW QUESTION 96
You are using the Performance Schema to investigate replication on a slave which has a single master. The option slave-parallel-type is set to DATABASE.
Assume that all instruments and consumers are enabled and all threads are instrumented.
Which two facts can be concluded from the given output?
- A. THREAD_ID 21 has stopped running.
- B. The slave is configured with slave_parallel_workers = 4
- C. The server needs more cores to use all slave threads.
- D. The salve has two intermediate relay slaves connected to it.
- E. The slave cannot process the relay log fast enough to use all threads.
- F. At most, two schemas are being updates concurrently.
Answer: B,E
NEW QUESTION 97
These details are shown when logged in to an account:
Which set of statements would match the accounts shown?
- A. mysql> CREATE USER 'robert'@'localhost' IDENTIFIED BY 'secret_password'; mysql>CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets';
- B. mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets'; mysql> CREATE USER ''@'' IDENTIFIED BY 'valid_password' WITH PROXY
'employee'@'localhost'; - C. mysql> CREATE_USER ''@'' IDENTIFIED WITH authentication_pam ACCOUNT
LOCK;
mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets'; mysql> GRANT PROXY ON 'employee'@'localhost' TO ''@''; - D. mysql> CREATE USER 'employee'@'localhost' IDENTIFIED BY 'more_secrets'; mysql> GRANT PROXY ON 'employee'@'localhost' TO 'robert'@'localhost';
Answer: C
NEW QUESTION 98
You created a backup of the world database with this command:
shell> mysqldump --opt world > dump.sql
Which two will import the data from dump.sql?
- A. mysql> USE test; mysql> LOAD DATA INFILE 'dump.sql';
- B. shell> mysql test < dump.sql
- C. shell> mysqladmin recover test dump.sql
- D. mysql>USE test; mysql>SOURCE dump.sql;
- E. shell> mysqlimport test dump.sql
Answer: A,E
NEW QUESTION 99
You have the following in your my.cnf configuration file:
[ mysqld]
default_authentication_plugin=sha256_password
You want to create a new user who will be connecting from the IP address 192.0.2.10, and you want to use the authentication plug-in that implements SHA-256 hashing for user account passwords.
Which two statements would create a user named webdesign for this IP address with the password of imbatman using a SHA_256 password hash? (Choose two.)
- A. CREATE USER 'webdesign'@'192.0.2.10' IDENTIFIED AS sha256_user WITH
sha256_password 'imbatman'; - B. CREATE USER 'webdesign'@'192.0.2.10' IDENTIFIED BY SHA265 AS 'imbatman';
- C. CREATE USER 'webdesign'@'192.0.2.10' IDENTIFIED BY 'iambatman';
- D. CREATE USER 'webdesign'@'192.0.2.10' WITH mysql_native_password USING SHA265 BY 'imbatman';
- E. CREATE USER 'webdesign'@'192.0.2.10' IDENTIFIED WITH sha256_password BY
'imbatman'; - F. CREATE USER WITH sha256_password 'sha256_user'@'192.0.2.10' IDENTIFIED AS
' webdesign' USING 'imbatman';
Answer: B,C
Explanation:
Explanation/Reference:
Reference: https://dev.mysql.com/doc/refman/8.0/en/sha256-pluggable-authentication.html
NEW QUESTION 100
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?
- A. Use GRANT USAGE ON *.* TO 'mike'@'client.example.com' MAX_USER_CONNECTIONS=0;
- B. Execute the mysql_secure_installation command.
- C. Use DROP USER 'mike'@'client.example.com';
- D. Use REVOKE ALL PRIVILEGES FROM 'mike'@'client.example.com';
- E. Use ALTER USER 'mike'@'client.example.com' ACCOUNT LOCK;
- F. Use ALTER USER 'mike'@'client.example.com' PASSWORD EXPIRE;
Answer: A,C
NEW QUESTION 101
You have installed MySQL Server for the first time on your system. However, the data directory along with the tables in the mysql system database are missing. Which step do you perform to create the contents of the data directory?
- A. Run the mysql_unpack.sql file
- B. Invoke mysql with the --initialize option.
- C. Invoke mysqld with the --initialize option.
- D. Run the create_system_tables.sql file
Answer: C
NEW QUESTION 102
You are using the Performance Schema to investigate replication on a slave which has a single master. The option slave-parallel-type is set to DATABASE.
Assume that all instruments and consumers are enabled and all threads are instrumented.
Which two facts can be concluded from the given output? (Choose two.)
- A. THREAD_ID 21 has stopped running.
- B. The slave is configured with slave_parallel_workers = 4
- C. The server needs more cores to use all slave threads.
- D. The salve has two intermediate relay slaves connected to it.
- E. The slave cannot process the relay log fast enough to use all threads.
- F. At most, two schemas are being updates concurrently.
Answer: B,E
NEW QUESTION 103
The MySQL installation includes the mysql_config_editor utility for managing login paths stored in a
.mylogin.cnf file.
Which two are true about the login path feature?
- A. It provides means to help avoid accidentally exposing the MySQL login details.
- B. It is an alternative to storing the MySQL login details in a my.cnf file.
- C. A .mylogin.cnf file can be edited using a text editor, such as vim or Notepad++.
- D. mysql_config_editor is the only MySQL-provided utility that can print the values stored in
.mylogin.cnf. - E. It provides a FIPS-compliant keyring for storing MySQL login details.
- F. A .mylogin.cnf file can store at most one login path.
Answer: A,B
Explanation:
Reference: https://dev.mysql.com/doc/refman/8.0/en/mysql-config-editor.html
NEW QUESTION 104
You have set innodb_stats_auto_recalc to OFF.
For tables using persistent statistics, what is the outcome of this change?
- A. InnoDB no longer automatically updates index statistics after 10% of the rows in a table change.
- B. InnoDB no longer automatically updates index statistics after the table structure is altered.
- C. InnoDB no longer automatically updates index statistics after a CREATE TABLE statement.
- D. InnoDB no longer automatically updates index statistics after an ANALYZE TABLE statement.
Answer: A
Explanation:
https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html
NEW QUESTION 105
A particular government's security policy is to have very strict data encryption and safety settings. This is done by restricting access based on their own CA authority and limiting access to particular users within a department. Which method could be used to restrict access as required?
- A. using GRANT ... REQUIRE SSL for a secure connection
- B. using GRANT USAGE, SSL, .....ON *.* TO user@remotehost IDENTIFIED BY 'secret_password'
- C. using GRANT ... REQUIRE X509 AND REQUIRE ISSUER '/C=.....' AND REQUIRE SUBJECT
'/C=.....' - D. using GRANT USAGE, X509, .......ON *.* TO user@remotehost IDENTIFIED BY 'secret_password'
Answer: C
NEW QUESTION 106
Which statement is true about tablespaces?
- A. The system tablespace can be configured to span multiple files.
- B. All tables must be in either the system tablespace or a general tablespace.
- C. All tablespace files must be in the directory specified by the --datadir option.
- D. General tablespaces can be configured to span multiple files.
Answer: B
NEW QUESTION 107
Multiversion Concurrency Control (MVCC) enables what type of backup?
- A. Logical
- B. Incremental
- C. Binary
- D. Hot
Answer: D
NEW QUESTION 108
Which statement best describes a "warm" backup?
- A. It is similar to a "hot" backup, but differs in that it does not permit write operations.
- B. It only backs up "warm" data, that is, data that has been recently modified.
- C. It is similar to a "cold" backup, but differs in that it permits write operations.
- D. It backs up the binary log, which contains the most recent "warm" changes.
Answer: B
Explanation:
A warm backup site is already stocked with hardware representing a reasonable facsimile of that found in your data center. To restore service, the last backups from your off-site storage facility must be delivered, and bare metal restoration completed, before the real work of recovery can begin.
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/4/html/ introduction_to_system_administration/s2-disaster-recovery-sites
NEW QUESTION 109
A MySQL instance is running on a dedicated server. Developers access the server from the same network subnet. Users access the database through an application that is running on a separate server in a DMZ.
Which two will optimize the security of this setup? (Choose two.)
- A. limiting logins to originate from the application server or the server's subnet
- B. starting the server with --bind-address=0.0.0.0 specified
- C. enabling and using SSL for connections to the MySQL database
- D. disabling connections from named pipes or socket files (depending on the operating system of the server)
- E. installing MySQL on the application server, and running the database and application on the same server
- F. running the server with --skip-networking specified
Answer: C,E
NEW QUESTION 110
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?
- A. five
- B. one row and a gap-lock
- C. one row and a next-key lock for supremum
- D. one
Answer: A
NEW QUESTION 111
You have a MySQL instance with the following variables in the /etc/my.cnffile:
You issue these statements:
USE prices;
UPDATE sales.january SET amount=amount+1000;
An hour after excluding the statements, you realize that you made a mistake and you want to go to the binary log and look at the statements again.
Which statement is true? (Choose two.)
- A. Nothing was written to the binary log because you cannot perform a calculation in a query without enclosing the statement in single quotation marks.
- B. Nothing is logged because you are executing an UPDATE statement that will cause changes to more than one row, and you do not have the --binlog-formatvalue set to STATEMENT.
- C. The changes caused by the UPDATEstatement are logged to the binary log because the instance is using --binlog-format = ROW
- D. You would receive an error on the statement because you cannot update a different database that what is specified with the USEstatement.
- E. The statement would fail because you cannot update more than one row at a time when using -- binlog-format = ROW.
Answer: A,B
NEW QUESTION 112
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?
- A. Set an exception in the host machine's firewall to allow external users to talk to mysqld.
- B. Create additional login accounts (so that everyone does not need to log in as root) and assign them appropriate privileges.
- C. Register mysqld as a service that will start automatically on this host machine.
- D. Execute a command with a minimal form of: mysql --initialize
- E. Create a configuration file containing default-storage-engine=InnoDB.
Answer: E
NEW QUESTION 113
......
Topics to Cover
Oracle 1z0-888 certification exam is based on the learnings, key topics, and activities encountered during oracle pieces of training and implementations.
Following are the major topics along with the sub-skills, a candidate should cover while preparing for the examination. These topics will give the candidates a clear view of which topics and skills inclusive, one should focus on for the certification.
Note: The list and details are not an all-inclusive content list. Oracle reserves the right to change and update the content (topics and sub-skills) at any point in time.
MySQL Security Ability to identify security risks Knowledge of network security Ability to use password security Knowledge of operating system security Ability to Protect SQL Injections
Maintaining a Stable System Knowledge of system stability Ability to use capacity planning Ability to troubleshoot the system Ability to identify and rectify the causes of server slowdowns Knowledge of InnoDB Recovery
Configure Replication Topology Replicate Conflicts Explain Replication Configure Replication Use MySQL Utilities Identify Replication Threads Monitor Replication Troubleshoot Replication
Optimizing Query Performance Ability to identify slow queries Knowledge of EXPLAIN statement Ability to work with Indexes Ability to Use Index Statistics
Monitoring MySQL Monitor MySQL using Log Files, Status Variables and Performance Schema
MySQL Architecture Understanding of MySQL Processes and Requests Knowledge of data storage in MySQL knowledge of MySQL Tablespaces Ability to identify and differentiate the Redo and Undo logs The ability to use memory in MySQL
Backup Strategy Understanding of system backup processes Ability to create a backup strategy Knowledge of MySQL backup tools and its usage techniques Explain raw backup methods Knowledge of binary logs and their usage
User Management knowledge of the MySQL privilege system Ability to create and modify user accounts Ability to configure passwords and account expiration Understanding the authentication plug-ins Knowledge of account permissions and configuring for individual accounts Ability to reset the forgotten root password
The candidate needs to go through and be proficient in every topic.
MySQL 5.7 Database Administrator
Preparation Guide for Oracle 1z0-888 Certification Exam
Introduction
The MySQL 5.7 Database Administrator Certification Exam certifies the candidate has an understanding of MySQL Database technology. This certificate is also known as Oracle 1z0-888 Exam which is a benchmark for experience and expertise recognized by employers across the globe.
Actual Questions Answers Pass With Real 1Z0-888 Exam Dumps: https://www.vceengine.com/1Z0-888-vce-test-engine.html
