[2022] 1Z1-888 Exam Dumps, Test Engine Practice Test Questions
Pass 1Z1-888 exam [Aug 03, 2022] Updated 155 Questions
NEW QUESTION 56
Host slave1 has ip address 192.0.2.10.
Host slave2 has ip address 203.0.113.50
Examine these commands:
Why did this error occur?
- A. The DNS is not configured correctly for slave1 host.
- B. There is no password defined in the login path.
- C. The host on the command line is not defined in the login path.
- D. The mysqldinstance has not been restarted after creating the login path.
- E. The .mylogin.cnffile is not readable.
Answer: E
NEW QUESTION 57
The MySQL error log shows:
InnoDB: Warning: a long semaphore wait:
The relevant parts of the InnoDB monitor output shows:
Which two options would help avoid the long wait in the future? (Choose two.)
- A. Increase the value of the innodb_read_io_threadsoption.
- B. Increase the size of the InnoDB buffer pool.
- C. Deactivate the query cache.
- D. Increase the value of the innodb_lock_wait_timeoutoption.
- E. Change the table to use HASH indexes instead of BTREE indexes.
- F. Set the value of innodb_adaptive_hash_indexto zero.
Answer: A,B
NEW QUESTION 58
Consider the key buffer in a MySQL server. Which two statements are true about this feature?
- A. It caches index blocks for all storage engine tables.
- B. It caches index blocks for MyISAM tables only.
- C. It caches index blocks for InnoDB tables only.
- D. It is a global buffer.
- E. It is set on a per-connection basis.
Answer: B,E
NEW QUESTION 59
You have a server that has very limited memory but has a very large table.
You will use mysqldump to back up this table.
Which option will ensure mysqldump will process a row at a time instead of buffering a set of rows?
- A. --tab
- B. --single-transaction
- C. --skip-buffer
- D. --quick
Answer: D
Explanation:
Reference: http://dev.mysql.com/doc/refman/4.1/en/mysqldump.html
NEW QUESTION 60
You attempt to connect to a MySQL Server by using the mysqlclient program. However, you receive this notice:
What would you run to fix the issue?
- A. the mysql_secure_installationscript to update server security settings
- B. the mysql_upgradescript
- C. the install plugincommand for the mysql_cleartext_passwordplugin
- D. the mysqlclient with the --enable-cleartext-pluginoption
- E. the mysqlclient with the --ignore-password-hashingoption
Answer: A
Explanation:
Explanation/Reference: http://planet.mysql.com/entry/?id=34077
NEW QUESTION 61
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?
- A. The validate_passwordplug-in has not been loaded.
- B. validate_password_dictionary_filecannot be set without restarting the MySQL instance.
- C. validate_password_policycannot be set without restarting the MySQL instance.
- D. The name of the dictionary file is too obvious.
- E. The dictionary file is an insecure location.
- F. The dictionary file word list is too short.
Answer: D,E
NEW QUESTION 62
Force Majeure is a catastrophic failure on a major level of the database operation. Regular backups are key to helping avoid data loss in such situations.
Which two other steps can help avoid data loss in a major catastrophe?
- A. Create a master-master pair for each service.
- B. Keep software updated to the latest version.
- C. Use RAID 10 storage for data.
- D. Have a second data centre in a different region or country.
- E. Implement a failover strategy to another geographic location.
- F. Use on-site network-attached storage to separate service from data.
Answer: D,E
NEW QUESTION 63
Consider:
Which statement best describes the meaning of the value for the key_len column?
- A. It shows the number of characters indexed in the key.
- B. It shows the total size of the index row.
- C. It shows how many columns in the index are examined.
- D. It shows how many bytes will be used from each index row.
Answer: D
NEW QUESTION 64
Examine the mydatatable and SELECTstatements:
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. one
- B. one row and a next-key lock for supremum
- C. five
- D. one row and a gap-lock
Answer: C
NEW QUESTION 65
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?
- A. The selectivity of the dept_no column is the best of the indexed columns.
- B. The secondary indexes are optimized for unique key look-ups.
- C. The values on the emp_no column must be unique.
- D. There are three indexes on the table.
- E. There is a redundant index on the emp_no column.
- F. There is a redundant index on the dept_no column.
Answer: B,E
NEW QUESTION 66
Which two capabilities are granted with the SUPER privilege? (Choose two.)
- A. allowing a client to kill other client connections
- B. allowing client accounts to take over the account of another user
- C. allowing change of the server runtime configuration
- D. allowing a client to shut down the server
Answer: A,D
NEW QUESTION 67
What are three typical causes of MySQL becoming suddenly slow and unavailable? (Choose three.)
- A. Monitoring has not enabled all Performance Schema instruments.
- B. The hardware includes a single point of failure.
- C. OPTIMIZE TABLE is not executed for the InnoDB tables.
- D. A configuration change was made.
- E. The application executes a new untested query.
- F. The MySQL Query Cache is disabled.
Answer: A,C,F
NEW QUESTION 68
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?
- A. validate_password_dictionary_file cannot be set without restarting the MySQL instance.
- B. The name of the dictionary file is too obvious.
- C. validate_password_policy cannot be set without restarting the MySQL instance.
- D. The validate_password plug-in has not been loaded.
- E. The dictionary file is an insecure location.
- F. The dictionary file word list is too short.
Answer: B,E
NEW QUESTION 69
At which stage during query processing does MySQL create a query's execution plan?
- A. Optimizing
- B. Authorizing
- C. Parsing
- D. Executing
Answer: A
Explanation:
https://dev.mysql.com/doc/refman/8.0/en/execution-plan-information.html
NEW QUESTION 70
An administrator installs MySQL to run under a mysqlOS account. The administrator decides to disable logins to the mysqlaccount by using /nologinor /bin/falseas the user's shell setting.
Which statement is true?
- A. The mysqluser needs a login and its home directory must be the base directory of the installation.
- B. This prevents creation of a command shell with the mysqlaccount, while allowing mysqldto run.
- C. This prevents mysqldfrom starting when standard startup scripts are used.
- D. The OS needs to allow logging in as mysqlso that administrative tasks can be performed.
Answer: A
Explanation:
Explanation/Reference:
NEW QUESTION 71
You will configure a MySQL Server to act as a replication master. Which two options must be configured correctly to allow this?
- A. server-id
- B. master-logging
- C. log_bin
- D. log-master-updates
- E. rpl-recovery-rank
- F. enable-master-start
Answer: A,C
NEW QUESTION 72
Which two statements are true about InnoDB auto-increment locking? (Choose two.)
- A. InnoDB never uses table_level locks.
- B. InnoDB does not use locks to enforce auto-increment uniqueness.
- C. Some settings for innodb_autoinc_lock_mode can help reduce locking.
- D. InnoDB always protects auto-increment updates with a table-level lock
- E. The auto-increment lock can be a table-level lock.
Answer: C,E
NEW QUESTION 73
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 USAGE, X509, .......ON *.* TO user@remotehost IDENTIFIED BY `secret_password'
- B. using GRANT ... REQUIRE SSL for a secure connection
- C. using GRANT USAGE, SSL, .....ON *.* TO user@remotehost IDENTIFIED BY `secret_password'
- D. using GRANT ... REQUIRE X509 AND REQUIRE ISSUER `/C=.....' AND REQUIRE SUBJECT `/C=.....'
Answer: D
NEW QUESTION 74
You created a backup of the worlddatabase with this command:
shell> mysqldump --opt world > dump.sql
Which two will import the data from dump.sql? (Choose two.)
- A. shell> mysqladmin recover test dump.sql
- B. shell> mysql test < dump.sql
- C. mysql> USE test; mysql> LOAD DATA INFILE 'dump.sql';
- D. mysql>USE test; mysql>SOURCE dump.sql;
- E. shell> mysqlimport test dump.sql
Answer: C,E
Explanation:
Explanation/Reference:
NEW QUESTION 75
How does the InnoDB storage engine handle deadlocks when they are detected?
- A. One of the affected transactions will be rolled back, the other is allowed to proceed.
- B. The affected transactions wait for innodb_lock_wait_timeout seconds, and then roll back.
- C. The transaction isolation level determines which transaction is rolled back.
- D. Both the affected transactions will be rolled back.
- E. The innodb_locks_unsafe_for_binlog setting determines which transaction is rolled back.
Answer: A
Explanation:
Reference: https://dev.mysql.com/doc/refman/8.0/en/innodb-deadlocks.html
NEW QUESTION 76
......
Aim of the Certificate Exam
The certification exam is designed to help the candidate excel and command his future progression. It is designed to
- Empower individuals to execute tasks with confidence and skill
- Differentiate individual in a crowded job market
- Provide individuals with a mark of excellence that is extremely recognized by the clients and seeks within across the industries
Oracle 1Z1-888 Real 2022 Braindumps Mock Exam Dumps: https://www.examtorrent.com/1Z1-888-valid-vce-dumps.html
