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单选题
An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）
A
STOP SLAVE; CHANGE MASTER TO MASTER_DELAY =0, RELAY_LOG_FILE = 'hostnamerelay- bin.00004' , RELAY_LOG_POS= 1383
B
STOP SLAVE; CHANGE MASTER TO RELAY_LOG_FILE = 'hostname-relay-bin.00004', RELAY_LOG_POS = 1383
C
STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; START SLAVE
D
STOP SLAVE; SET GLOBAL master_delay =0; START SLAVE
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更多 “单选题An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）A STOP SLAVE; CHANGE MASTER TO MASTER_DELAY =0, RELAY_LOG_FILE = 'hostnamerelay- bin.00004' , RELAY_LOG_POS= 1383B STOP SLAVE; CHANGE MASTER TO RELAY_LOG_FILE = 'hostname-relay-bin.00004', RELAY_LOG_POS = 1383C STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; START SLAVED STOP SLAVE; SET GLOBAL master_delay =0; START SLAVE” 相关考题
考题
You need to replicate a table from a master to a slave. The master and slave copies of the table will have different number of columns.Which two conditions must be true?()
A.Each extra column in the copy with more columns must not have a default valueB.Columns that are common to both versions of the table must be defined in the same order on the master and the slaveC.The slave database cannot have more columns than the master. Only the master database can have more columnsD.Columns that are common to both versions of the table must come first in the table definition, before any additional columns are additional columns are defined on either serverE.The master database cannot have more columns than the slave. Only the slave deatbase can have more columns
考题
A MySQL replication slave is set up as follows: User all InnoDB tablesReceives ROW-based binary logs Has the read-only optionThe 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: 10622013-08-27 13:55:44 9056 [Warning] Salve: Duplicate entry ‘3’ for key ‘PRIMARY’Error_code: 10622013-08-27 13:55:44 9056 [ERROR] Error running query, slave SQL thread aborted. Fix theproblem, 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?（）A.The slave was created with mysqldump –u root –p – skip-lock-table—all-databases /data/data.sqlB.The slave user does have INSERT, UPDATE, or DELETE permission and cannot execute the write_rows functionC.For tables with UNIQUE keys, statement-based replication must be used maintain integrityD.The root user on the slave has executed FLUSH LOGS, causing the relay-log to doublewriteE.The applications have the SUPER privilege, which allows them to update rows
考题
Compare a typical Distributed Replicated Block Device (DRBD) with MySQL Standard Replication using master－slave replication. Which two statements are correct?()
A.Both technologies guarantee an identical copy of data on the secondary nodeB.Only MySQL can maintain a time-delayed copy of data on the secondary nodeC.Both technologies use the TCP/IP stack as their primary transmission mediumD.DRBD uses shared-disk technology
考题
When backing up a replication slave, which three should also be backed up in addition to data?()
A.The master.info and relay.info filesB.The relay log filesC.The relay index fileD.Mysql.slave_master_info tableE.Mysql.slave_relay_log_info tableF.Mysql.slave_worker_info table
考题
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
考题
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: 10322013-08-27 14:15:47 9056 [warning] Slave: Can‘t find record in ‘t1‘ Error_code: 10322013-08-27 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
考题
A simple master－to－slave replication is currently being used. The following information is extracted from the SHOW SLAVE STATUS output:Last_SQL_Error: Error 'Duplicate entry '8' for key 'PRIMARY
A.SET GTID_NEXT=CONSISTENCY; BEGIN; COMMIT; SET GTID_NEXT=AUTOMATICB.SET GLOBAL enforce_gtid_consistency=ONC.SET GTID_EXECUTED=38f32e23480a7-32a1-c323f78067fd37821 : 9D.SET GTID_NEXT=38f32e23480a7-32a1-c323f78067fd37821 : 9; BEGIN; COMMIT; SET GTID_NEXT=AUTOMATICE.SET GLOBAL SQL_SKIP_SLAVE_COUNTER=1
考题
试题（71）～（75）A Bluetooth device can be either a master or a slave and any of the devices within a （71）can be the master. There is only one master and there can be up to （72） active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to （73） parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to （74） mode before it can become active. Within a network, all （75） communications are prohibited.（71）A. Wireless LANB. Wireless MANC. Cellular radio networkD. Piconet（72）A. 7B. 15C. 63D. 255（73）A. 127B. 255C. 511D. 1023（74）A. masterB. standby slaveC. parked slaveD. active slave（75）A. master-to-masterB. master-to-slaveC. slave-to-slaveD. slave-to-master
考题
A Bluetooth device can be either a master or a slave and any of the devices within a （ ）can be the master. There is only one master and there can be up to （请作答此空） active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to （ ） parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to （ ） mode before it can become active. Within a network, all （ ） communications are prohibited.A.7
B.15
C.63
D.255
考题
A Bluetooth device can be either a master or a slave and any of the devices within a （请作答此空）can be the master. There is only one master and there can be up to （ ） active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to （ ） parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to （ ） mode before it can become active. Within a network, all （ ） communications are prohibited.A.WIRELESS LAN
B.WIRELESS MAN
C.CELLULAR RADIO NETWORK
D.PICONET
考题
A Bluetooth device can be either a master or a slave and any of the devices within a （ ）can be the master. There is only one master and there can be up to （ ） active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to （ ） parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to （请作答此空） mode before it can become active. Within a network, all （ ） communications are prohibited.A.MASTER
B.STANDBY SLAVE
C.PARKED.SLAVE
D.ACTIVE SLAVE
考题
A Bluetooth device can be either a master or a slave and any of the devices within a （ ）can be the master. There is only one master and there can be up to （ ） active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to （ ） parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to （ ） mode before it can become active. Within a network, all （请作答此空） communications are prohibited.A.MASTER-TO-MASTER
B.MASTER-TO-SLAVE
C.SLAVE-TO-SLAVE
D.SLAVE-TO-MASTER
考题
You need to replicate a table from a master to a slave. The master and slave copies of the table will have different number of columns. Which two conditions must be true?（）A、Each extra column in the copy with more columns must not have a default valueB、Columns that are common to both versions of the table must be defined in the same order on the master and the slaveC、The slave database cannot have more columns than the master. Only the master database can have more columnsD、Columns that are common to both versions of the table must come first in the table definition, before any additional columns are additional columns are defined on either serverE、The master database cannot have more columns than the slave. Only the slave deatbase can have more columns
考题
在给硬盘跳线时，我们常常会看到“Master”和“Slave”标记，它们的含义分别为（）。A、“Master”为主盘、”Slave”为从盘B、“Master”为从盘、”Slave”为从盘C、“Master”为第一IDE接口硬盘、“slave”第二IDE接口硬盘D、”Master”为第二IDE接口硬盘、“Slave”第一IDE接口硬盘
考题
使用“show board”命令可以检查UAP3300各槽位板子的状态是否正常，主用SMCU板的状态值应该是（）。A、MASTER_OKB、SLAVE_OKC、MASTERD、SLAVE
考题
The technician is working on a system and has determined that the hard drive must be reimaged. However, the customer wants to retain all the data. Which of the following would take the LEAST amount of time to implement?（）A、Create a new partition on the hard drive, copy all data to the new partition, reimage the drive, and the old data will be on the new partition and accessible.B、Install a new hard drive, slave the old drive, image the new drive, and show the customer how to access their data on the old drive.C、Upload the data to an external FTP server, reimage the drive, and then restore the data to the newly imaged drive.D、Copy data to a USB connected hard drive, reimage the drive, and then restore the data to the newly imaged drive.
考题
An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）A、Gtid_mode must be set to AUTO during point in time recoveriesB、Mysqlbinlog ignores arguments to – exclude-gtids-it means ignore all events with GTIDsC、The server keeps track of which GTIDs have already been executed and skips thoseD、Enforce_gtid_consistency is set to ON
考题
Compare a typical Distributed Replicated Block Device (DRBD) with MySQL Standard Replication using master-slave replication. Which two statements are correct?（）A、Both technologies guarantee an identical copy of data on the secondary nodeB、Only MySQL can maintain a time-delayed copy of data on the secondary nodeC、Both technologies use the TCP/IP stack as their primary transmission mediumD、DRBD uses shared-disk technology
考题
An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）A、STOP SLAVE; CHANGE MASTER TO MASTER_DELAY =0, RELAY_LOG_FILE = 'hostnamerelay- bin.00004' , RELAY_LOG_POS= 1383B、STOP SLAVE; CHANGE MASTER TO RELAY_LOG_FILE = 'hostname-relay-bin.00004', RELAY_LOG_POS = 1383C、STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; START SLAVED、STOP SLAVE; SET GLOBAL master_delay =0; START SLAVE
考题
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
考题
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
考题
单选题An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）A
STOP SLAVE; CHANGE MASTER TO MASTER_DELAY =0, RELAY_LOG_FILE = 'hostnamerelay- bin.00004' , RELAY_LOG_POS= 1383B
STOP SLAVE; CHANGE MASTER TO RELAY_LOG_FILE = 'hostname-relay-bin.00004', RELAY_LOG_POS = 1383C
STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; START SLAVED
STOP SLAVE; SET GLOBAL master_delay =0; START SLAVE
考题
多选题When backing up a replication slave, which three should also be backed up in addition to data?（）AThe master.info and relay.info filesBThe relay log filesCThe relay index fileDMysql.slave_master_info tableEMysql.slave_relay_log_info tableFMysql.slave_worker_info table
考题
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
考题
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
考题
单选题The technician is working on a system and has determined that the hard drive must be reimaged. However, the customer wants to retain all the data. Which of the following would take the LEAST amount of time to implement?（）A
Create a new partition on the hard drive, copy all data to the new partition, reimage the drive, and the old data will be on the new partition and accessible.B
Install a new hard drive, slave the old drive, image the new drive, and show the customer how to access their data on the old drive.C
Upload the data to an external FTP server, reimage the drive, and then restore the data to the newly imaged drive.D
Copy data to a USB connected hard drive, reimage the drive, and then restore the data to the newly imaged drive.
考题
单选题An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）A
Gtid_mode must be set to AUTO during point in time recoveriesB
Mysqlbinlog ignores arguments to – exclude-gtids-it means ignore all events with GTIDsC
The server keeps track of which GTIDs have already been executed and skips thoseD
Enforce_gtid_consistency is set to ON
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