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1. Consider the following two partial outputs of the SHOW VARIABLES command on a master and slave server: Master:
+--------------------------+---------------------------+
| Variable_name | Value |
+--------------------------+---------------------------+
| connect_timeout | 5 |
| log_bin | ON |
| max_connections
| 100 |
| shared_memory_base_name | MYSQL |
| server_id | 2 |
| tmp_table_size | 5242880 |
| version | 5.0.13-rc-nt |
Slave:
+--------------------------+---------------------------+
| Variable_name | Value |
---------------------------+---------------------------+
| connect_timeout | 5 |
| log_bin | ON |
| max_connections | 10 |
| shared_memory_base_name | MYSQL |
| server_id | 2 |
| tmp_table_size | 4266336 |
| version | 5.0.16-rc-nt |
There is apparently a problem with the slave replicating from the master. Which of the following best describes the most likely problem?

A) The connect_timeout variable needs to be increased.
B) The version of the slave is newer than the version of the master.
C) The server_id is not unique.
D) The max_connections variable needs to be increased.

2. What will be the effect of executing the following statement?
REVOKE ALL PRIVILEGES FROM 'web'@'localhost'

A) The account 'web'@'localhost' will have all privileges removed, and the account deleted from the server.
B) Nothing. A REVOKE statment without an ON clause is invalid
C) The account 'web'@'localhost' will no longer be usable for login, but since there is no ON clause, privileges are retained for re-enabling the account at a later time.
D) The account 'web'@'localhost' will lose all privileges except for USAGE

3. When working with replication, why might you want to stop the SQL thread on the slave while keeping the I/O thread running? (Choose two)

A) So that remaining events can be processed while not receiving new events from the master.
B) So that no changes are made while making backups.
C) So that events for the slave do not get backlogged on the master.

4. 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) If the account 'joe'@'localhost' has the EXECUTE privilege on year_to_date, the function will complete successfully
B) The function will always execute as if it was 'root'@'localhost' that invoked it since SQL SECURITY DEFINER has been specified.
C) The function will not execute, as 'joe'@'localhost' does not have access to the financials table
D) The function will not execute as SQL SECURITY DEFINER has been specified. It would execute if instead SQL SECURITY INVOKER had been specified

5. Which factors can be considered in a stored routine to allow or disallow access or modification of data? (Choose two)

A) The CPU load of the system
B) The current date and time
C) The identity of the client user
D) The number of current connections

問題與答案：