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2014年2月18日星期二

ITCertKing MYSQL 010-002 exam practice questions and answers

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Exam Code: 010-002
Exam Name: MYSQL (Certified MySQL Associate (English))
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Total Q&A: 50 Questions and Answers
Last Update: 2014-02-18

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NO.1 A MySQL table has ...
Select the best response.
A. zero or more columns, and zero or more rows.
B. zero or more columns, and one or more rows.
C. one or more columns, and zero or more rows.
D. one or more columns, and one or more rows.
Answer: C

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NO.2 Which of the following statements will discard the existing database called world?
Select the best response.
A. DELETE DATABASE world
B. DROP DATABASE world
C. REMOVE DATABASE world
D. TRUNCATE DATABASE world
Answer: B

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NO.3 Which of the following statements best describes the purpose of the SQL WHERE clause?
In SQL statements, the WHERE clause specifies ...
Select the best response.
A. the tables from which data is to be retrieved.
B. a condition to filter for only specific rows.
C. a condition to filter for only specific groups defined by a GROUP BY clause.
D. a number to limit the number of rows that is operated upon by the statement.
Answer: B

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NO.4 The table Country contains the following rows:
+--------------------------+------------+
| Name | Population |
+--------------------------+------------+
| Nauru | 12000 |
| Turks and Caicos Islands | 17000 |
| Tuvalu | 12000 |
| Wallis and Futuna | 15000 |
+--------------------------+------------+
Which of the following statements will return all rows in the table, sorted by the value in the Population
column?
Select the best response.
A. SELECT Name, Population ASC
FROM Country
B. SELECT Name, ORDER BY Population
FROM Country
C. SELECT Name, Population
FROM Country
GROUP BY Population ASC
D. SELECT Name, Population
FROM Country
ORDER BY Population
Answer: D

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NO.5 The default database contains a table called City. Which of the following statements may be executed
to obtain a statement that could be used to (re-)create the City table?
Select the best response.
A. DESCRIBE City
B. DESCRIBE TABLE City
C. SHOW TABLE City
D. SHOW CREATE TABLE City
Answer: D

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NO.6 In the context of database transactions, the atomicity property guarantees that...
Select the best response.
A. during a transaction, rows are processed one at a time.
B. all statements that are executed inside a transaction are immediately committed.
C. all statements that are executed inside a transaction are committed or rolled back as one unit.
D. other transactions cannot see the changes made in other ongoing uncommitted transactions.
Answer: C

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NO.7 A table is successfully created by executing the following statement:
CREATE TABLE numbers (
double_number double,
decimal_number decimal(2,1)
)
One row is successfully inserted into the numbers table. At this point, the table contains the following
data:
+---------------+----------------+
| double_number | decimal_number |
+---------------+----------------+
| 1.5 | 2.5 |
+---------------+----------------+
The row is updated by executing the following statement:
UPDATE numbers
SET double_number = double_number + 0.25,
decimal_number = decimal_number + 0.01
Which values are now stored in the double_number and decimal_number columns of the updated row?
Select the best response.
A. 1.8 and 2.5
B. 1.75 and 2.5
C. 1.8 and 2.51
D. 1.75 and 2.51
Answer: B

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NO.8 Which part of a SELECT statement specifies the tables from which data is to be retrieved?
Select the best response.
A. The SELECT list.
B. The FROM clause.
C. The WHERE clause.
D. The LIMIT clause.
Answer: B

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NO.9 Which of the following statements can be used to list all databases that are accessible to the current
user?
Select the best response.
A. LIST DATABASES
B. SHOW DATABASES
C. DISPLAY DATABASES
D. VIEW DATABASES
Answer: B

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NO.10 Which statement can be used to list all columns in the City table?
Select the best response.
A. DISPLAY COLUMNS FROM City
B. SHOW COLUMNS FROM City
C. SHOW COLUMNS LIKE 'City'
D. SHOW City COLUMNS
Answer: B

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2014年2月10日星期一

Latest MYSQL 1Z0-874 of exam practice questions and answers

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Exam Name: MYSQL (MySQL 5.0 Database Administrator Certified Professional Exam, Part II)
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Total Q&A: 140 Questions and Answers
Last Update: 2014-02-10

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NO.1 With replication, what on the master is used to send commands to the slave?
A. The relay log.
B. The binary log.
C. The SQL Thread.
Answer: B

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NO.2 Consider the following:
mysql> EXPLAIN SELECT Name FROM Country WHERE Code = 'CAN'\G
*************************** 1. row ***************************
id: 1
select_type: SIMPLE
table: Country
type: const
possible_keys: PRIMARY
key: PRIMARY
key_len: 3
ref: const
rows: 1
Extra:
Which of the following best describes the meaning of the value of the type column?
A. The table has exactly one row.
B. Several rows may be read from the table.
C. Only one row of all its rows need to be read.
Answer: C

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NO.3 Given the following MyISAM table structure:
mysql> desc city;
+-------------+----------+------+-----+---------+----------------
+
| Field | Type | Null | Key | Default | Extra
|
+-------------+----------+------+-----+---------+----------------
+
| ID | int(11) | | PRI | NULL | auto_increment
|
| Name | char(35) | | | |
|
| CountryCode | char(3) | | | |
|
| District | char(20) | | | | |
| Population | int(11) | | MUL | 0 | |
+-------------+----------+------+-----+---------+----------------+
and the following SQL statement:
SELECT Population
FROM city
WHERE Population = 10000
ORDER BY Population
LIMIT 5;
Which of the following statements best describes how MySQL optimizer executes the query?
A. The optimizer uses the primary key column ID to read the index values, then uses the index on
Population to filter the results. The optimizer will always choose to use a unique index first, then use a
secondary index if available.
B. The optimizer uses the index on the Population column to search and filter the WHERE clause.
A temporary table is used to perform a filesort on the results, and then only 5 records are returned to the
client.
C. The optimizer uses the index on the Population column to search, filter and sort the Population column,
then returns 5 records to the client. The optimizer does not need to read the data rows, and can return
values from the index only, because the index contains just integer values that form a leftmost prefix for
the key.
D. The optimizer uses the index on the Population column to search, filter and sort the Population column,
and returns 5 records to the client. The optimizer does not need to read the data rows, and can return
values from the index only because only those columns where specified in the
SELECT statement.
E. The optimizer will never read data from disk, since MySQL caches both data and index in the key
buffer.
Answer: D

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NO.4 Assuming that the account 'joe'@'%' does not already exist on the server, executing the statement
mysql> CREATE USER 'joe'@'%' IDENTIFIED BY 'sakila'
will have the following consequences:
A. The account 'joe'@'%' is created on the server. However, clients cannot connect using this account
until further privileges have been assigned to the account.
B. The account 'joe'@'%' is created on the server. Clients may connect to the server using this account,
but will not be able to access any databases, tables or stored routines
C. The account 'joe'@'%' is created on the server. Clients may connect to the server using this account
and execute stored routines, but will not be able to access any databases or tables
D. Nothing; there is no such command as CREATE USER
Answer: B

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NO.5 Consider the following GRANT statement:
GRANT USAGE ON *.* TO 'kofi'@'localhost' IDENTIFIED BY 'password'
What is the implications of executing that statement?
A. Kofi can access all database objects.
B. Kofi can access all his tables.
C. Kofi can display server system and status variables.
D. Kofi can grant privileges to others.
E. Kofi can access all database objects belonging to localhost.
Answer: C

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NO.6 When working with stored routines, which of the following are true in regards to the effect on the
amount of data exchanged between client and server?
A. They may increase the amount of data exchanged.
B. They can help reduce the amount of data exchanged.
C. They have no effect on the amount of data exchanged.
Answer: B

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NO.7 What are reasons to prefer using GRANT and REVOKE statements over editing the privilege tables
directly?
A. Using GRANT and REVOKE allows the server to figure out the right tables and do all the appropriate
work
B. All grant tables in memory are immediately updated on GRANT and REVOKE
C. Making changes directly to the grant tables, one must remember to execute flush privileges to make
the changes take effect
D. GRANT and REVOKE statements allow you to do more fine-grained tuning of user privileges than
does editing the grant tables directly.
E. None of the above
Answer: B

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NO.8 How can the SHOW PROCESSLIST command be helpful when optimizing queries?
A. It shows if a query is using an index or not.
B. It shows how the server processes a query.
C. If checked periodically, it can reveal queries that cause other queries to hang.
D. It shows the percentage of processing power that each query is using on a server.
Answer: C

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NO.9 The stored function year_to_date is created by the 'root'@'localhost' account as follows:
CREATE FUNCTION year_to_date ()
RETURNS DECIMAL(10,2)
SQL SECURITY DEFINER
BEGIN ...
END;
Within the routine body, a number of calculations are made on data in the financials table and the
calculated value is returned. The only account which can access the financials table is 'root'@'localhost'.
If a client connects with the account 'joe'@'localhost' and calls the year_to_date function, what will
happen?
A. The function will always execute as if it was 'root'@'localhost' that invoked it since SQL
SECURITY
DEFINER has been specified.
B. The function will not execute, as 'joe'@'localhost' does not have access to the financials table
C. The function will not execute as SQL SECURITY DEFINER has been specified. It would execute if
instead SQL SECURITY INVOKER had been specified
D. If the account 'joe'@'localhost' has the EXECUTE privilege on year_to_date, the function will complete
successfully
Answer: D

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NO.10 Which of the following statements are true of how access control is based?
A. It is based off of an access control table in the mysql database.
B. It is based off of grant tables in the mysql database.
C. It is based off of an access control list stored in the data directory.
D. It is based off of an access control list stored inside the .frm files of each table.
Answer: B

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NO.11 Which of the following best describes why InnoDB tables should always have primary keys and
why they should be short?
A. Because InnoDB uses primary keys to locate tables, and shorter keys make quicker lookups.
B. Because InnoDB uses primary keys to locate table rows, and shorter keys make quicker lookups.
C. Because InnoDB stores pointers in a log to all the primary keys and shorter keys make this log smaller.
Answer: B

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NO.12 Which of the following best describes what the master.info file contains and how it is used?
A. It contains the values from the CHANGE MASTER statement.
B. When the slave restarts it looks for which master to use from this file.
C. It contains information about the master server, its slaves and its configuration.
D. It is used by an administrator to determine what slaves connect to the master, and other information
about the master server.
Answer: D

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NO.13 How can stored routines be used to check for constraints or legality of incoming data?
A. They can make use of the VALIDATE DEFINER setting.
B. They can not be used to check for constraints or legality of data.
C. They can check and only perform an action if the incoming values match a specified value.
Answer: C

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NO.14 Which of the following best describes how the relay log works?
A. It records the times when the slave connects to the master.
B. When a slave receives a change from the master, it is recorded in the relay log first and
processed later.
C. When a slave receives a change from the master, it is processed first and then recorded in the relay
log.
Answer: B

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NO.15 For which of the following objects can privileges be specified?
A. Host
B. Global
C. Database
D. Table
E. Column
F. Row
Answer: C

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NO.16 Privileges for using stored routines can be specified at the following levels:
A. Server-wide
B. Per database
C. Per routine
D. The ability to use stored procedures is not governed by the privilege system.
Answer: A,B,C

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NO.17 You have been granted SELECT, INSERT and DELETE privileges on the table city in the world
database.
You log in, and exercise all your privileges without any problems.
While you are still connected and doing work, the administrator removes your DELETE privileges and
informs you by mail that you can no longer delete from table city.
Being skeptical, you decided to test your privileges and realize that you still have them all. What is are the
most likely causes of this?
A. The administrator forgot to revoke your UPDATE privilege
B. The administrator forgot to revoke your SELECT privilege
C. The administrator removed the DELETE privilege by performing an UPDATE directly on the
mysql.table_priv table
D. The administrator did not execute FLUSH PRIVILEGES
Answer: D

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NO.18 Which of the following statements about the slow query log is true?
A. The slow query log will always contain just slow queries.
B. The slow query log may not always contain just slow queries.
C. The slow query log always logs more than just slow queries.
Answer: B

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NO.19 Which of the following statements are required to create a key cache of 4 MB, assign the MyISAM table
world. City to it and preload the index.?
A. mysql> SET GLOBAL city_cache.key_buffer_size = 4194304;mysql> CACHE INDEX world.City IN
city_cache;mysql> LOAD INDEX INTO CACHE world.City;
B. mysql> ALTER TABLE world.city KEY_CACHE = 4194304;
C. mysql> CREATE CACHE FOR world.City SIZE = 4194304;
D. It is not possible to create a key cache for a specific MyISAM table, only the global key cache can be
used.
Answer: A

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NO.20 Consider the following query:
GRANT ALL ON world.* TO 'web'@'hostname'
What privileges would this give this user?
A. All privileges including GRANT.
B. All privileges except GRANT.
C. SELECT, INSERT, UPDATE and DELETE
D. ALL can not be used when granting privileges.
Answer: B

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2014年1月3日星期五

010-002 questions and answers

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Exam Code: 010-002
Exam Name: MYSQL (Certified MySQL Associate (English))
One year free update, No help, Full refund!
Total Q&A: 50 Questions and Answers
Last Update: 2014-01-03

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NO.1 A table is successfully created by executing the following statement:
CREATE TABLE numbers (
double_number double,
decimal_number decimal(2,1)
)
One row is successfully inserted into the numbers table. At this point, the table contains the following
data:
+---------------+----------------+
| double_number | decimal_number |
+---------------+----------------+
| 1.5 | 2.5 |
+---------------+----------------+
The row is updated by executing the following statement:
UPDATE numbers
SET double_number = double_number + 0.25,
decimal_number = decimal_number + 0.01
Which values are now stored in the double_number and decimal_number columns of the updated row?
Select the best response.
A. 1.8 and 2.5
B. 1.75 and 2.5
C. 1.8 and 2.51
D. 1.75 and 2.51
Answer: B

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NO.2 Which statement can be used to list all columns in the City table?
Select the best response.
A. DISPLAY COLUMNS FROM City
B. SHOW COLUMNS FROM City
C. SHOW COLUMNS LIKE 'City'
D. SHOW City COLUMNS
Answer: B

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NO.3 A MySQL table has ...
Select the best response.
A. zero or more columns, and zero or more rows.
B. zero or more columns, and one or more rows.
C. one or more columns, and zero or more rows.
D. one or more columns, and one or more rows.
Answer: C

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NO.4 Which part of a SELECT statement specifies the tables from which data is to be retrieved?
Select the best response.
A. The SELECT list.
B. The FROM clause.
C. The WHERE clause.
D. The LIMIT clause.
Answer: B

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NO.5 The default database contains a table called City. Which of the following statements may be executed
to obtain a statement that could be used to (re-)create the City table?
Select the best response.
A. DESCRIBE City
B. DESCRIBE TABLE City
C. SHOW TABLE City
D. SHOW CREATE TABLE City
Answer: D

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NO.6 The table Country contains the following rows:
+--------------------------+------------+
| Name | Population |
+--------------------------+------------+
| Nauru | 12000 |
| Turks and Caicos Islands | 17000 |
| Tuvalu | 12000 |
| Wallis and Futuna | 15000 |
+--------------------------+------------+
Which of the following statements will return all rows in the table, sorted by the value in the Population
column?
Select the best response.
A. SELECT Name, Population ASC
FROM Country
B. SELECT Name, ORDER BY Population
FROM Country
C. SELECT Name, Population
FROM Country
GROUP BY Population ASC
D. SELECT Name, Population
FROM Country
ORDER BY Population
Answer: D

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NO.7 Which of the following statements best describes the purpose of the SQL WHERE clause?
In SQL statements, the WHERE clause specifies ...
Select the best response.
A. the tables from which data is to be retrieved.
B. a condition to filter for only specific rows.
C. a condition to filter for only specific groups defined by a GROUP BY clause.
D. a number to limit the number of rows that is operated upon by the statement.
Answer: B

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NO.8 Which of the following statements can be used to list all databases that are accessible to the current
user?
Select the best response.
A. LIST DATABASES
B. SHOW DATABASES
C. DISPLAY DATABASES
D. VIEW DATABASES
Answer: B

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NO.9 In the context of database transactions, the atomicity property guarantees that...
Select the best response.
A. during a transaction, rows are processed one at a time.
B. all statements that are executed inside a transaction are immediately committed.
C. all statements that are executed inside a transaction are committed or rolled back as one unit.
D. other transactions cannot see the changes made in other ongoing uncommitted transactions.
Answer: C

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NO.10 Which of the following statements will discard the existing database called world?
Select the best response.
A. DELETE DATABASE world
B. DROP DATABASE world
C. REMOVE DATABASE world
D. TRUNCATE DATABASE world
Answer: B

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2013年12月4日星期三

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NO.1 MySQL is a multi-threaded database server. Every connection to the database server is handled by it's
own thread.
A. True
B. False
Answer: A

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NO.2 Another user has issued LOCK TABLES pets READ You can...?
A. Update table pets
B. SELECT from table pets
C. UPDATE and SELECT from table pets
D. None of the above
Answer: B

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NO.3 Which one of the following statements can be used to start MySQL 5.0 manually from the command line
on windows?
A. C:\> C:\Program Files\MySQL\MySQL Server 5.0\bin\mysqladmin -u root start
B. C:\> C:\Program Files\MySQL\MySQL Server 5.0\bin\mysqld
C. C:\> C:\Program Files\MySQL\MySQL Server 5.0\bin\mysql_start
Answer: B

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NO.4 Which of the following statements are true regarding the data directory on a Windows binary
installation?
A. A script needs to be run to initialize it after installation.
B. It comes pre-initialized.
C. You can choose to pre-initialize it or initialize it manually during the installation.
Answer: B

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NO.5 Which of the following statements are true for locks established by the InnoDB storage engine?
A. It sometimes escalates locks to page level.
B. It sometimes escalates locks to table level.
C. It sometimes escalates locks to page or table level.
D. It never escalates locks to page or table level.
Answer: D

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NO.6 Of the following mechanisms available to connect a MySQL client to a MySQL database server, which
types of connections are only available on Windows based systems?
A. TCP/IP
B. Sockets
C. Shared Memory
D. Named Pipes
Answer: C,D

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NO.7 Where is the data stored for a table that is defined as using the FEDERATED Storage Engine?
A. The data will always be stored on the local host.
B. The data will always be stored on a remote host.
C. The data can be stored on any host depending on the definition of the table.
D. The data will always be stored on disk.
E. The data will always be stored in memory.
F. The data will be stored according to the storage engine of the referenced table.
Answer: B

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NO.8 Which mysqld command line option disables incoming TCP/IP connections?
A. --shared-memory
B. --memlock
C. --no-networking
D. --skip-networking
Answer: D

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NO.9 In a standard MySQL installation which of following files are stored below the data directory?
A. Format files for all the tables
B. Data and index files for MyISAM tables
C. InnoDB tablespace files
D. General server logs
E. MySQL upgrade script files
Answer: A,B,C,D

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NO.10 Which of the following package types are provided specifically for UNIX-style OS installations?
A. Essentials
B. RPM
C. Source
D. tar-packaged binary
Answer: B

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NO.11 Which of the following is true of a MySQL client and server?
A. They must be run on the same type of Operating System.
B. They must be run on the same hardware architecture.
C. They do not have to be run on the same type of Operating System.
D. They do not have to be run on the same hardware architecture.
Answer: C,D

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NO.12 Which of the following APIs/connectors are included in a MySQL distribution?
A. Connector/J
B. Connector/ODBC
C. C API
D. Connector/NET
E. Connector/MJX
Answer: C

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NO.13 Which of the following are requirements for InnoDB binary portability?
A. Both machines must use the same operating system.
B. Database and table names must use lowercase format.
C. Both machines must use two's-complement integer arithmetic.
D. Both machines must use IEEE floating-point format or contain no floating-point columns.
Answer: B

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NO.14 Which of the following statements correctly describes the way to enable and use shared memory
connections to the MySQL database server?
A. Shared memory connections are available by default on all platforms, but must have TCP/IP
networking disabled by using the --skip-networking option.
B. Shared memory connections are supported on all windows binaries, and is enabled by default.
C. Shared memory connections are supported on all windows binaries, and must be enabled by using the
--shared-memory command line option.
D. Shared memory is not a supported communication method for the MySQL database server.
Answer: C

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NO.15 Which of the following is true for how the InnoDB storage engine uses diskspace?
A. It stores its data, index and undo information all in its own tablespace.
B. It stores its data in .MYD files, in the respective database directory, and its index and undo information
in its own tablespace.
C. It stores its data and index in .MYD and .MYI files, in the respective database directory, and undo
information in its own tablespace.
D. It stores its data, index and undo information in .MYD and .MYI files, in the respective database
directory.
Answer: A

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NO.16 Which of the following best describes the processing model for how the MySQL server handles
queries?
A. The server uses a one-tier processing model in which each storage engine optimizes and processes
each query issued against it.
B. The server uses a two-tier processing model: a SQL/optimizer tier and a storage engine tier.
C. The server uses a three-tier processing model: a SQL/optimizer tier, a formatting tier and a storage
engine tier.
Answer: B

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NO.17 Which of the following best describes how MySQL utilizes the grant table buffers?
A. The grant table buffer loads grant table information into memory for fast access.
B. The grant table buffer loads what users are currently logged in and performing queries.
C. The grant table buffer holds requests waiting to check the grant table to perform access-control.
Answer: A

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NO.18 Which of the following is true for the command-line programs mysqlcheck and myisamchk?
A. mysqlcheck must run on the server to perform checks and repairs and myisamchk can perform checks
and repairs on a remote server.
B. mysqlcheck can perform checks and repairs on a remote server, and myisamchk must run on the
server.
C. Both mysqlcheck and myisamchk can perform checks and repairs on a remote server.
D. Neither mysqlcheck or myisamchk can perform checks and repairs on a remote server.
Answer: B

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NO.19 mysqldump can be instructed to dump...
A. Only table structures
B. Only data
C. Both table structures and data
Answer: C

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NO.20 When making connections to a MySQL server on a Unix platform, which of the following is true?
A. TCP/IP connections are faster than socket file connections.
B. Socket file connections are faster than TCP/IP connections.
C. TCP/IP and Socket file connections are equally as fast.
Answer: B

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2013年10月12日星期六

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Total Q&A: 50 Questions and Answers
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NO.1 A table is successfully created by executing the following statement:
CREATE TABLE numbers (
double_number double,
decimal_number decimal(2,1)
)
One row is successfully inserted into the numbers table. At this point, the table contains the following
data:
+---------------+----------------+
| double_number | decimal_number |
+---------------+----------------+
| 1.5 | 2.5 |
+---------------+----------------+
The row is updated by executing the following statement:
UPDATE numbers
SET double_number = double_number + 0.25,
decimal_number = decimal_number + 0.01
Which values are now stored in the double_number and decimal_number columns of the updated row?
Select the best response.
A. 1.8 and 2.5
B. 1.75 and 2.5
C. 1.8 and 2.51
D. 1.75 and 2.51
Answer: B

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NO.2 Which statement can be used to list all columns in the City table?
Select the best response.
A. DISPLAY COLUMNS FROM City
B. SHOW COLUMNS FROM City
C. SHOW COLUMNS LIKE 'City'
D. SHOW City COLUMNS
Answer: B

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NO.3 Which of the following statements will discard the existing database called world?
Select the best response.
A. DELETE DATABASE world
B. DROP DATABASE world
C. REMOVE DATABASE world
D. TRUNCATE DATABASE world
Answer: B

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NO.4 The table Country contains the following rows:
+--------------------------+------------+
| Name | Population |
+--------------------------+------------+
| Nauru | 12000 |
| Turks and Caicos Islands | 17000 |
| Tuvalu | 12000 |
| Wallis and Futuna | 15000 |
+--------------------------+------------+
Which of the following statements will return all rows in the table, sorted by the value in the Population
column?
Select the best response.
A. SELECT Name, Population ASC
FROM Country
B. SELECT Name, ORDER BY Population
FROM Country
C. SELECT Name, Population
FROM Country
GROUP BY Population ASC
D. SELECT Name, Population
FROM Country
ORDER BY Population
Answer: D

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NO.5 Which part of a SELECT statement specifies the tables from which data is to be retrieved?
Select the best response.
A. The SELECT list.
B. The FROM clause.
C. The WHERE clause.
D. The LIMIT clause.
Answer: B

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NO.6 The default database contains a table called City. Which of the following statements may be executed
to obtain a statement that could be used to (re-)create the City table?
Select the best response.
A. DESCRIBE City
B. DESCRIBE TABLE City
C. SHOW TABLE City
D. SHOW CREATE TABLE City
Answer: D

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NO.7 In the context of database transactions, the atomicity property guarantees that...
Select the best response.
A. during a transaction, rows are processed one at a time.
B. all statements that are executed inside a transaction are immediately committed.
C. all statements that are executed inside a transaction are committed or rolled back as one unit.
D. other transactions cannot see the changes made in other ongoing uncommitted transactions.
Answer: C

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NO.8 Which of the following statements best describes the purpose of the SQL WHERE clause?
In SQL statements, the WHERE clause specifies ...
Select the best response.
A. the tables from which data is to be retrieved.
B. a condition to filter for only specific rows.
C. a condition to filter for only specific groups defined by a GROUP BY clause.
D. a number to limit the number of rows that is operated upon by the statement.
Answer: B

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NO.9 Which of the following statements can be used to list all databases that are accessible to the current
user?
Select the best response.
A. LIST DATABASES
B. SHOW DATABASES
C. DISPLAY DATABASES
D. VIEW DATABASES
Answer: B

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NO.10 A MySQL table has ...
Select the best response.
A. zero or more columns, and zero or more rows.
B. zero or more columns, and one or more rows.
C. one or more columns, and zero or more rows.
D. one or more columns, and one or more rows.
Answer: C

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NO.1 Another user has issued LOCK TABLES pets READ You can...?
A. Update table pets
B. SELECT from table pets
C. UPDATE and SELECT from table pets
D. None of the above
Answer: B

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NO.2 Which of the following best describes how MySQL utilizes the grant table buffers?
A. The grant table buffer loads grant table information into memory for fast access.
B. The grant table buffer loads what users are currently logged in and performing queries.
C. The grant table buffer holds requests waiting to check the grant table to perform access-control.
Answer: A

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NO.3 Which mysqld command line option disables incoming TCP/IP connections?
A. --shared-memory
B. --memlock
C. --no-networking
D. --skip-networking
Answer: D

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NO.4 MySQL is a multi-threaded database server. Every connection to the database server is handled by it's
own thread.
A. True
B. False
Answer: A

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NO.5 Which of the following is true for how the InnoDB storage engine uses diskspace?
A. It stores its data, index and undo information all in its own tablespace.
B. It stores its data in .MYD files, in the respective database directory, and its index and undo information
in its own tablespace.
C. It stores its data and index in .MYD and .MYI files, in the respective database directory, and undo
information in its own tablespace.
D. It stores its data, index and undo information in .MYD and .MYI files, in the respective database
directory.
Answer: A

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NO.6 mysqldump can be instructed to dump...
A. Only table structures
B. Only data
C. Both table structures and data
Answer: C

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NO.7 Which of the following statements are true regarding the data directory on a Windows binary
installation?
A. A script needs to be run to initialize it after installation.
B. It comes pre-initialized.
C. You can choose to pre-initialize it or initialize it manually during the installation.
Answer: B

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NO.8 Which of the following is true for the command-line programs mysqlcheck and myisamchk?
A. mysqlcheck must run on the server to perform checks and repairs and myisamchk can perform checks
and repairs on a remote server.
B. mysqlcheck can perform checks and repairs on a remote server, and myisamchk must run on the
server.
C. Both mysqlcheck and myisamchk can perform checks and repairs on a remote server.
D. Neither mysqlcheck or myisamchk can perform checks and repairs on a remote server.
Answer: B

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NO.9 Which of the following statements correctly describes the way to enable and use shared memory
connections to the MySQL database server?
A. Shared memory connections are available by default on all platforms, but must have TCP/IP
networking disabled by using the --skip-networking option.
B. Shared memory connections are supported on all windows binaries, and is enabled by default.
C. Shared memory connections are supported on all windows binaries, and must be enabled by using the
--shared-memory command line option.
D. Shared memory is not a supported communication method for the MySQL database server.
Answer: C

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NO.10 Which of the following package types are provided specifically for UNIX-style OS installations?
A. Essentials
B. RPM
C. Source
D. tar-packaged binary
Answer: B

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NO.11 In a standard MySQL installation which of following files are stored below the data directory?
A. Format files for all the tables
B. Data and index files for MyISAM tables
C. InnoDB tablespace files
D. General server logs
E. MySQL upgrade script files
Answer: A,B,C,D

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NO.12 Where is the data stored for a table that is defined as using the FEDERATED Storage Engine?
A. The data will always be stored on the local host.
B. The data will always be stored on a remote host.
C. The data can be stored on any host depending on the definition of the table.
D. The data will always be stored on disk.
E. The data will always be stored in memory.
F. The data will be stored according to the storage engine of the referenced table.
Answer: B

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NO.13 Which of the following are requirements for InnoDB binary portability?
A. Both machines must use the same operating system.
B. Database and table names must use lowercase format.
C. Both machines must use two's-complement integer arithmetic.
D. Both machines must use IEEE floating-point format or contain no floating-point columns.
Answer: B

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NO.14 Which of the following best describes the processing model for how the MySQL server handles
queries?
A. The server uses a one-tier processing model in which each storage engine optimizes and processes
each query issued against it.
B. The server uses a two-tier processing model: a SQL/optimizer tier and a storage engine tier.
C. The server uses a three-tier processing model: a SQL/optimizer tier, a formatting tier and a storage
engine tier.
Answer: B

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NO.15 Which of the following is true of a MySQL client and server?
A. They must be run on the same type of Operating System.
B. They must be run on the same hardware architecture.
C. They do not have to be run on the same type of Operating System.
D. They do not have to be run on the same hardware architecture.
Answer: C,D

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NO.16 Which of the following statements are true for locks established by the InnoDB storage engine?
A. It sometimes escalates locks to page level.
B. It sometimes escalates locks to table level.
C. It sometimes escalates locks to page or table level.
D. It never escalates locks to page or table level.
Answer: D

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NO.17 Which one of the following statements can be used to start MySQL 5.0 manually from the command line
on windows?
A. C:\> C:\Program Files\MySQL\MySQL Server 5.0\bin\mysqladmin -u root start
B. C:\> C:\Program Files\MySQL\MySQL Server 5.0\bin\mysqld
C. C:\> C:\Program Files\MySQL\MySQL Server 5.0\bin\mysql_start
Answer: B

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NO.18 When making connections to a MySQL server on a Unix platform, which of the following is true?
A. TCP/IP connections are faster than socket file connections.
B. Socket file connections are faster than TCP/IP connections.
C. TCP/IP and Socket file connections are equally as fast.
Answer: B

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NO.19 Which of the following APIs/connectors are included in a MySQL distribution?
A. Connector/J
B. Connector/ODBC
C. C API
D. Connector/NET
E. Connector/MJX
Answer: C

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NO.20 Of the following mechanisms available to connect a MySQL client to a MySQL database server, which
types of connections are only available on Windows based systems?
A. TCP/IP
B. Sockets
C. Shared Memory
D. Named Pipes
Answer: C,D

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