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1z0-883 问题列表
问题
单选题An employee cannot access the company database. You check the connection variables: What is a valid explanation for why one of the users is unable to connect to the database?（）A
Bob has max_user_connections set to zero, which blocks all his connectionsB
Joe has exceeded the max_user_connections global limitC
All users are blocked because max_user_connections is accumulated over the host account informationD
Kay is already connected elsewhere and attempting to log in againE
Connect_timeout is too small to allow a connection to occur
问题
单选题You are using CTIDS in replication. You need to skip a transaction with the CTID of aaa-bbb-cccddd-eee : 3 on a slave. Which command would you execute from a Mysql prompt?（）A
STOP SLAVE; SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1; START SLAVEB
STOP SLAVE; BEGIN; SET GTID_IGNORE=aaa-bbb-ccc-ddd-eee: 3; COMMIT; START SLAVEC
STOP SLAVE; SETGTID_NEXT=aaa-bbb-ccc-ddd-eee: 3; BEGIN; COMMIT; SET GTID_NEXT=AUTOMATIC; START SLAVED
STOP SLAVE; RESET SLAVE; BEGIN; SKIP NEXT GTID; COMMIT; START SLAVE
问题
多选题Which two statements are true about setting the per-thread buffers higher than required?（）AMore memory per thread is beneficial in all scenariosBIt causes increased overhead due to initial memory allocationCIt can affect system stability during peak load times, due to swappingDIt requires increasing the thread_cache_size variable
问题
单选题The validate_password plugin is loaded and displays the following settings in global variables: Mysql＞ SHOW VARIABLES LIKE ‘validate_password%’; When attempting to set your password, you get the following error: Mysql＞ SET PASSWORD = PASSWORD (‘Hoverl@%’); ERROR 1819 (HY000): Your password does not satisfy the current policy requirements What is the cause of the error?（）A
The password is eight characters long, but needs to exceed validate_password_length to be validB
All of the MEDIUM password policy requirements have not been honoredC
The password matches a substring Hover as a dictionary wordD
The password does not match the validate_passoword_number_count requirementE
There is no dictionary file defined, so password validation cannot work as expected
问题
单选题You have enabled the Slow Query Log for a short period. When you process the Slow Query Log, you receive the following snip of output: Count: 100 Time=0 .22a (22s) Lock=0.00s (0s) Rows=0.0 (0), root[root] @localhost CREATE TABLE 't1' (id serial,id0 varchar(N) unique key,intcaoll INT (N) ,intco12 INT(N) ,intco13 INT(N) ,intco14 INT(N) ,intco15 INT(N) ,charcol1 VARVHAR(N) ,charcol2 VARCHAR(N) charcol3 VARCHAR (N) ,charcol4 VARVHAR(N) ,charcol5 VARCHAR(N) charcol6 VARCHAR (N) ,charcol7 VARVHAR(N) ,charcol8 VARCHAR(N) charcol9 VARCHAR (N) .charcol 10 VACHAR (N) ) Count: 64000 Time-0.02s (1213s) Lock=0.00s (6s) Rows=1.0 (64000), root [root]@ localhost SELECT intocl1, intco12, intco13, intco14, intco15, intco16,intco17, intco18 ,intcol9, intcol10, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6 ,charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' Count: 1 Time=0.02s (0s) Lock=0.00s (0s) Rows=1.0 (1) agent [agent] @localhost SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user, 's', host) = CURRENT_USER （ ） Count: 48000 Time=0.02s (778s) Lock=0.00 (3s) Rows=1.0 (48000), root[root]@localhost SELECT intocl1,intcol2,intcol3, intcol4, intcol5, charcol1, charcol2, charcol3 ,charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' You want to tune the query such that it provides the greatest overall time savings. Which query will accomplish this?（）A
CHEATE TABLE 't1' (id serial, id0 varchar (N) unique key, intcol1 INT (N) ,intcol2 INT (N), intcol3 INT(N) ,intcol4 INT(N), intcol5 INT(N), charool1 VARCHAR (N) ,charcol2 VARCHAR (N), charcol3 VARCHAR(N), charcol4 VARCHAR(N), charcol5 VARCHAR (N) ,charcol6 VARCHAR (N), charcol7 VARCHAR(N), charcol8 VARCHAR(N), charcol9 VARCHAR (N) ,charcol10 VARCHAR (N)B
SELECT intcol1, intcol2, intcol3, intcol4, intcol5, intcol6, intcol7, intcol8, intcol9, Intcol10, intcol11, intcol12, intcol13, intcol14, intcol15, intcol16, intcol17, intcol18, intcol19, charcol10 FROM t1 WHERE id = 's'C
SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user,'s', host) = CURRENT_USER()D
SELECT intcol1, intcol2, intcol3, intcol4, intcol5, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's'
问题
单选题ROW-based replication has stopped working. You investigate the error log file and find the following entries: 2013-08-27 14:15:47 9056 [ERROR] Slave SQL: Could not execute Delete_rows event on table test.t1; Can't find record in 't1', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log 56_master-bin. 000003, end_log_pos 851, Error_code: 1032 2013-08-27 14:15:47 9056 [warning] Slave: Can't find record in 't1' Error_code: 1032 2013-08-27 14:15:47 9056 [ERROR] Error running query, slave SQL thread aborted. Fix the problem, and restart the slave SQL thread with "SLAVE START". We stopped at log '56_masterbin. 000003' position 684 Why did you receive this error?（）A
The slave SQL thread does not have DELETE privileges to execute on test.t1 table.sB
The table definition on the slave -litters from the masterC
Multi-threaded replication slaves can have temporary errors occurring for cross database updatesD
The slave SQL thread attempted to remove a row from the test.t1 table, but the row did not exist
问题
多选题Which three tasks can be performed by using the performance Schema?（）AFinding queries that are not using indexesBFinding rows that are locked by InnoDBCFinding client connection attributesDFinding the part of a code in which a single query is spending timeEFinding the size of each table
问题
单选题You have a login-path named "adamlocal" that was created by using the mysql_config_editor command. You need to check what is defined for this login_path to ensure that it is correct for you deployment. You execute this command: $mysql_config_editor print –login-path=adamlocal What is the expected output of this command?（）A
The command prints all parameter for the login-path. The password is replaced with starsB
The command prints the encrypted entry for the login-path. The is only possible to see if an entry existsC
The command prints all parameters for the login-path. The password is shown only when you provide the –password optionD
The command prints all parameters for the login-path. The password is printed in plain tex
问题
多选题A MySQL replication slave is set up as follows: User all InnoDB tables Receives ROW-based binary logs Has the read-only option The replication slave has been found in an error state. You check the MySQL error log file and find the following entries: 2013-08-27 13:55:44 9056 [ERROR] Slave SQL: Could not execute Write_rows event on table test.tl; Duplicate entry ‘3’ for key’PRIMARY’ , Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event’s master log 56_master-bin.000003, end_log_pas 653, Error_code: 1062 2013-08-27 13:55:44 9056 [Warning] Salve: Duplicate entry ‘3’ for key ‘PRIMARY’ Error_code: 1062 2013-08-27 13:55:44 9056 [ERROR] Error running query, slave SQL thread aborted. Fix the problem, and restart the slave SQL thread with “SLAVE START”, We stopped at log ‘56_masterbin.000003’ position 496 What are two possible causes for this error to occur?（）AThe slave was created with mysqldump –u root –p – skip-lock-table—all-databases /data/data.sqlBThe slave user does have INSERT, UPDATE, or DELETE permission and cannot execute the write_rows functionCFor tables with UNIQUE keys, statement-based replication must be used maintain integrityDThe root user on the slave has executed FLUSH LOGS, causing the relay-log to doublewriteEThe applications have the SUPER privilege, which allows them to update rows
问题
多选题You examine the output of SHOW GLOBAL STATUS and notice that the value of Created_tmp_disk_tables is consistently increasing. Which two variables would likely fix this issue?（）ATable_open_cacheBTable_open_cache_instancsCTable_definition_cacheDTmp_table_sizeEMax_heap_table_sizeFMax_tmp_tables
问题
多选题Which three are properties of the MyISAM storage engine?（）ATransaction supportBFULLTEXT indexing for text matchingCTable and page level locking supportDForeign key supportEGeospatial indexingFHASH index supportGTable level locking only
问题
单选题A user executes the statement; PURGE BINARY LOGS TO 'mysql-bin.010'; What is the result?（）A
It deletes all binary log files, except 'mysql-in.010'B
It deletes all binary log files up to and including 'mysql-bin.010'C
It deletes all binary log files before 'mysql-bin.010'D
It deletes all binary log files after 'mysql-bin.010'
问题
单选题You use—login-path to access a MySQL server on a Linux installation. Which statement is true about the – login-path option that is created by using mysql_config_editor?（）A
All system users have access to the MySQL server via—login path localB
login-path can be used only for MySQL servers running on a local machineC
login-path allows you to provide login credentials without passing clear text passwords on the command lineD
When using – login-path to connect to a remote MySQL server, the remote server version must be 5.6 or later
问题
单选题Consider the MySQL Enterprise Audit plugin. On attempting to start the MySQL service after a crash, notice the following error: [ERROR] Plugin ‘audit_log’ init function returned error. In the audit log file, you notice the final entry: … What action should you take to fix the error and allow the service to start?（）A
Re-install the audit pluginB
Execute the command FLUSH LOGSC
Execute the command SET GLOBAL audit_log_fiush= OND
Move or rename the existing audit.log file
问题
单选题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
— quickB
— skip-bufferC
— single-transactionD
— tab