ocp 042答案解析

1Z0-042 Number: 1Z0-042Passing Score: 800Time Limit: 120 min File Version: 13.02 三网IT教育 SANNETExam AQUESTION 1Which two statements regarding archive log destinations are true? (Choose two.)A. A maximum of 10 destinations can be specified.B.The archive logs must be written to all the destinations.C.The archive log files can be written only to local destinations.D.The archiving information can be traced to the alert log file whenever the archiving to a destination issuccessful.E.The number of archiving destinations must be equal to the number of archive processes (ARCn). Correct Answer: ADSection: (none)ExplanationExplanation/Reference:QUESTION 2On which three can you use Recovery Manager (RMAN) to perform incremental backup? (Choose three.)A.data filesB.control filesC.tablespacesD.password fileE.parameter fileF.whole databaseG.flashback log fileH.archived log filesI.change tracking fileCorrect Answer: ACFSection: (none)ExplanationQUESTION 3You execute the following set of commands to create a database user and to grant the system privileges in your production environment.SQL> CREATE USER user01IDENTIFIED BY oracleDEFAULT TABLESPACE tbs1TEMPORARY TABLESPACE tempPROFILE default/SQL> GRANT create session, create table TO user01;While executing the command to create a table, the user gets the following error message and the CREATE TABLE.. command fails.ERROR at line 1:ORA-01950: no privileges on tablespaceWhat could be the possible reason for this error message?A.The tablespace TBS1 is full.B.The user is not the owner of the SYSTEM tablespace.C.The user does not have quota on the TBS1 tablespace.D.The user does not have sufficient system privileges to create table in the TBS1 tablespace.E.The user does not have sufficient privileges to create table on the default permanent tablespace. Correct Answer: CSection: (none)ExplanationQUESTION 4Your database is not configured for session failover. Your tnsnames.ora file contains the following details: =(DESCRIPTION=(ADDRESS_LIST=(LOAD_BALANCE=off)(FAILOVER=ON)(ADDRESS=(PROTOCOL=tcp)(HOST=test1-server)(PORT=1521))(ADDRESS=(PROTOCOL=tcp)(HOST=test2-server)(PORT=1521))) (CONNECT_DATA=(SERVICE_NAME=)))Which feature is enabled in this case?A.Load balancingB.Instance failoverC.Database failoverD.Connect-time failoverE.Transparent Application Failover (TAF)Correct Answer: DSection: (none)ExplanationExplanation/Reference:QUESTION 5You execute the following command to audit the database activities:SQL> AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL; What is the effect of this command?A.One audit record is created for the whole session if user SCOTT successfully drops one or more tablesin his session.B.One audit record is created for every session when any user successfully drops a table owned bySCOTT.C.One audit record is created for each successful DROP TABLE command executed by any user to droptables owned by SCOTT.D.One audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege toother users in his session.E.One audit record is created for each successful DROP TABLE command executed in the session ofSCOTT.Correct Answer: ASection: (none)ExplanationQUESTION 6The user SCOTT executes the following command successfully to increase the salary values in one of his sessions:SQL> UPDATE emp SET sal=sal*1.15 WHERE deptno=20;Before SCOTT ends the transaction, user HR who has the privileges on EMP table executes a query to fetch the salary details but finds the old salary values instead of the increased values.Why does HR still see the old data?A.because of redo data from redo log fileB.because of data from database buffer cacheC.because of data from a temporary tablespaceD.because of undo data from the undo tablespaceCorrect Answer: DSection: (none)ExplanationQUESTION 7You specified segment space management as automatic for a tablespace. What effect would this have on space management?"First Test, First Pass" - 35Oracle 1Z0-042 ExamA.Extents would be managed by the freelists.B.The segment would be managed by bitmaps.C.The segment would be managed by the freelists.D.Free space would be managed by the data dictionary.Correct Answer: BSection: (none)ExplanationQUESTION 8Which two statements about Flashback Query are true? (Choose two.)A.It is generated by using the redo log files.B.It helps in row-level recovery from user errors.C.It can be performed to recover ALTER TABLE statementsD.It fails when undo data pertaining to the transaction is overwritten.E.The database has to be opened with the resetlogs option after performing Flashback Query.Correct Answer: BDSection: (none)ExplanationQUESTION 9Your alert log file has the following information:Tue May 25 17:43:38 2004ORA-00060: Deadlock detected. More info in file/u01/app/oracle/admin/ORCL/udump/orcl_ora_3173.trc.What would you do to ensure that database is still running correctly?A.examine the trace file and kill the session that caused the deadlockB.examine the trace file and kill both the sessions responsible for the deadlockC.examine the trace file for details and ask the user who caused the deadlock to roll back the transactionD.examine the trace file for details and remember that deadlocks are resolved automatically by OracledatabaseE.examine the trace file for details and use the Undo Advisor to rollback the transaction that caused thedeadlockCorrect Answer: DSection: (none)ExplanationQUESTION 10While running the Oracle Universal Installer on a Unix platform to install Oracle Database 10g software, you are prompted to run orainstRoot.sh script. What does this script accomplish?A.It creates the pointer file.B.It creates the base directory.C.It creates the Inventory pointer file.D.It creates the Oracle user for installation.E.It modifies the Unix kernel parameters to match Oracle's requirement.Correct Answer: CSection: (none)ExplanationExplanation/Reference:"First Test, First Pass" - 36Oracle 1Z0-042 ExamQUESTION 11You want to move all the objects of the APPS user in the test database to the DB_USER schema of the production database. Which option of IMPDP would you use to accomplish this task?A.FULLB.SCHEMASC.REMAP_SCHEMAD.REMAP_DATAFILESE.REMAP_TABLESPACECorrect Answer: CSection: (none)ExplanationQUESTION 12Which two are valid locking levels that are used by transactions in an Oracle database? (Choose two.)A.row levelB.block levelC.object levelD.schema levelE.database levelCorrect Answer: ACSection: (none)ExplanationQUESTION 13Redo log files are not multiplexed in your database. Redo log blocks are corrupted in group 2, and archiving has stopped. All the redo logs are filled and database activity is halted. Database writer has written everything to disk. Which command would you execute to proceed further?A.RECOVER LOGFILE BLOCK GROUP 2;B.ALTER DATABASE DROP LOGFILE GROUP 2;C.ALTER DATABASE CLEAR LOGFILE GROUP 2;D.ALTER DATABASE RECOVER LOGFILE GROUP 2;E.ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 2;Correct Answer: ESection: (none)ExplanationQUESTION 14View the Exhibit.The DBA creates a new user as follows:SQL> CREATE USER manfus IDENTIFIED BY manfus TEMPORARY TABLESPACE temp;User manfus creates a table as follows:SQL> CREATE TABLE material(id NUMBER(3));In which tablespace will the material table be created?"First Test, First Pass" - 37Oracle 1Z0-042 ExamA.TEMPB.PRODERSD.SYSAUXE.SYSTEMCorrect Answer: CSection: (none)ExplanationQUESTION 15In the middle of a transaction, a user session was abnormally terminated but the instance is still up "First Test, First Pass" - 38Oracle 1Z0-042 Examand the database is open. Which two statements are true in this scenario? (Choose two.)A.Event Viewer gives more details on the failure.B.The alert log file gives detailed information about the failure.C.PMON rolls back the transaction and releases the locks.D.SMON rolls back the transaction and releases the locks.E.The transaction is rolled back by the next session that refers to any of the blocks updated by the failedtransaction.F.Data modified by the transaction up to the last commit before the abnormal termination is retained inthe database.Correct Answer: CFSection: (none)ExplanationQUESTION 16The ST_INFO master table has millions of rows that are updated very rarely. It has a STATE_CODE column that contains the value for 25 states. The table is frequently queried on the STATE_CODE column. Which type of index would you suggest to improve the query performance?A.B-treeB.bitmapC.reverse keyD.function basedCorrect Answer: BSection: (none)ExplanationQUESTION 17You scheduled a backup by using the Schedule Backup option in Oracle Enterprise Manager. Which statement about the script created by Oracle Enterprise Manager is true?A.It is a SQL script.B.It is a PL/SQL file.C.It is an operating system (OS) file.D.It is a Recovery Manager (RMAN) script.Correct Answer: DSection: (none)ExplanationQUESTION 18View the Exhibit to see the source and target databases. You have created a database link, . , between the databases PRODDB and DEVDB. You want to import schema objects of the HR user using Oracle Data Pump from the development database, DEVDB, to the production database, PRODDB. You execute the following command on the target database server:$impdp system/manager directory = DB_DATAdumpfile = schemas.datschemas = hrflashback_time = 2004-02-03 09:00The command fails, displaying the following error:"First Test, First Pass" - 39Oracle 1Z0-042 ExamORA-39001: invalid argument valueORA-39000: bad dump file specificationORA-31640: unable to open dump file "/home/oracle/schema/schemas.dat" for readORA-27037: unable to obtain file statusWhat would you do to overcome the error?A.remove the dumpfile option in the commandB.remove the flashback_time option in the commandC.add the user, SYSTEM, to the schemas option in the commandD.add network_link = option in the commandE.remove the schemas option and add the network_link = option in the commandF.remove the dumpfile option and add the network_link = option in the command Correct Answer: FSection: (none)ExplanationQUESTION 19Examine the following commands executed in your database:SQL> ALTER SESSION RECYCLEBIN=ON;Session alteredSQL> CREATE TABLE emp TABLESPACE tbsfd AS SELECT * FROM hr.employees; Table created.Further, you executed the following command to drop the table:SQL> DROP TABLE emp;Table dropped.What happens in this scenario?A.The table is moved to the SYSAUX tablespace.B.The table is moved to the SYSTEM tablespace.C.The table is removed from the database permanently."First Test, First Pass" - 40Oracle 1Z0-042 ExamD.The table is renamed and remains in the TBSFD tablespace.Correct Answer: DSection: (none)ExplanationQUESTION 20Your tnsnames.ora file has the following entry for the service alias ORCL:ORCL =( DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = 10.156.24.216)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME = )))The TNSPING command executes successfully when tested with ORCL but you are not able to connect to the database instance with the following command:SQL> CONNECT scott/tiger@orclWhat could be the reason for this?A.The listener is not running at the server.B.The TNS_ADMIN environmental variable is set to a wrong value.C.The database service is not registered with the listener.D.The DEFAULT_DOMAIN parameter is set to a wrong value in the SQLNET.ORA file.Correct Answer: CSection: (none)ExplanationQUESTION 21The SCOTT user has an index on the ITEM_DESC column of the ITEM table. As part of the year-ending task, SCOTT updates the ITEM_DESC column for most of the rows in the ITEM table.How does this change to the table affect the index?A.An update in a leaf row takes place.B.The index becomes invalid after the update.C.The leaf block containing the row to be updated is marked as invalid.D. A row in the leaf block of the index for the key value is deleted and inserted.Correct Answer: DSection: (none)ExplanationQUESTION 22View the Exhibit.Which statement regarding the dept and emp tables is true?"First Test, First Pass" - 41Oracle 1Z0-042 ExamA.When you delete a row from the emp table, you would receive a constraint violation error.B.When you delete a row from the dept table, you would receive a constraint violation error.C.When you delete a row from the emp table, automatically the corresponding rows are deleted from thedept table.D.When you delete a row from the dept table, automatically the corresponding rows are deleted from theemp table.E.When you delete a row from the dept table, automatically the corresponding rows are updated with nullvalues in the emp table.F.When you delete a row from the emp table, automatically the corresponding rows are updated with nullvalues in the dept table.Correct Answer: DSection: (none)ExplanationQUESTION 23When you try to start the Database Control by using the emctl start dbconsole command the following error is displayed:TZ set to America/New_yorkOC4J Configuration issue./u01/app/oracle/product/10.1.0/db_1/oc4j/j2ee/OC4J_DBConsole_.or"FirstTest, FirstPass" - 42Oracle 1Z0-042 Exam not found.Which two environment variables do you need to set appropriately to avoid such errors, and start the Database Control successfully? (Choose two.)A.NLS_LANGB.ORACLE_SIDC.ORACLE_HOMED.ORACLE_BASEE.LD_LIBRARY_PATHCorrect Answer: BCSection: (none)ExplanationQUESTION 24Your database instance is started using the server parameter file (SPFILE). Control files are multiplexed and stored on different disks. Because of a disk failure, you lost one of these control files. You replaced the damaged disk. What is the correct sequence of steps that you would follow to recover the control file?1. Shut down the instance, if not already done.2. Copy one of the remaining control files to a new location.3. Change the value of the CONTROL_FILES initialization parameter to correspond to the new location of the control files.4. Start up the database instance to the NOMOUNT stage.5. Recover the database to the point of failure of the control file.6. Open the database.A.5,2,3,4B.1,2,4,3,5C.2,4,3,4,5D.4,5,6,2,3Correct Answer: BSection: (none)ExplanationQUESTION 25You plan to use static database registration for a new listener when you create it. What could be the two reasons for this? (Choose two.)A.More than one database is to be registered with the listener.B.The users will connect the database by using the host naming method.C.The Oracle Enterprise Manager is to be used to monitor an Oracle9i database.D.The database that is to be registered with the listener is configured in shared server mode.E.The listener is not configured on the default port of 1521 and the instance is not configured to registerwith a nondefault port.Correct Answer: CESection: (none)ExplanationQUESTION 26Which statement is true when you run the SQL Tuning Advisor with limited scope?"First Test, First Pass" - 43Oracle 1Z0-042 ExamA.Access path analysis is not performed for the SQL statements.B.SQL structure analysis is not performed for the SQL statements.C.SQL Profile recommendations are not generated for the SQL statements.D.The staleness and absence of the statistics are not checked for the objects in the query supplied to theSQL Tuning Advisor.Correct Answer: CSection: (none)ExplanationQUESTION 27Your database is running under automatic undo management and the UNDO_RETENTION parameter is set to 900 sec. You executed the following command to enable retention guarantee:SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE;What effect would this statement have on the database?A.The extents in undo tablespace retain data until the next full database backup.B.The extents containing committed data in the undo tablespace are never overwritten.C.The extents which no longer contain uncommitted data in the undo tablespace are not overwritten for atleast15 minutes.D.The extents containing committed data in the undo tablespace are not overwritten until the instance isshut down.Correct Answer: CSection: (none)ExplanationQUESTION 28Your database is in NOARCHIVELOG mode and a logswitch happens every 20 minutes. On Thursday morning, media failure resulted in corruption of a data file belonging to the TOOLS tablespace. Backups are taken on every Sunday. What would you do in this situation?A.recover using Oracle Flashback Database technologyB.restore the data files from backup and perform a complete recoveryC.restore only the corrupted data file and perform tablespace recoveryD.restore the data files from backup and perform cancel-based recoveryE.restore the entire database from the most recent backup and start the instance and open the database Correct Answer: ESection: (none)ExplanationQUESTION 29You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DBA. While observing the server settings, you find that the following parameter has been set in the parameter file of the database:REMOTE_OS_AUTHENT = TRUEWhat could have been the reason to set this parameter as TRUE?A.to enable operating system authentication for a remote clientB.to restrict the scope of administration to identical operating systems "First Test, First Pass" - www. 44Oracle 1Z0-042 ExamC.to allow the start up and shut down of the database from a remote clientD.to enable the administration of the operating system from a remote clientE.to disable the administration of the operating system from a remote clientCorrect Answer: ASection: (none)ExplanationQUESTION 30View this parameter setting in your database:DB_CREATE_FILE_DEST='D:\oracle\product\10.2.0\oradata\oracle'You created a tablespace by using this command:CREATE TABLESPACE USERS;Which two statements are true about the USERS tablespace? (Choose two.)A.The tablespace has two data files.B.An error is reported and tablespace creation fails.C.Data files are created with names generated by the instance.D.The tablespace can be extended without specifying the data file.E.Data files belonging to the USERS tablespace cannot be renamed.Correct Answer: CDSection: (none)ExplanationQUESTION 31Which two operations can be flashed back using the Flashback technology? (Choose two.)A.DROP USER SMITH;B.DROP TABLE EMPLOYEES;C.DROP TABLESPACE USERS;D.ALTER TABLE SALES_REP DROP PARTITION P1;E.ALTER TABLE EMPLOYEES DROP COLUMN DESIG_ID;Correct Answer: ABSection: (none)ExplanationQUESTION 32You specified extent management as local for a tablespace. How will it affect space management in the tablespace?A.All the extents will be of the same size.B.Bitmap will be used to record free and allocated extents.C.Free extents will be managed by the data dictionary tables.D.The tablespace will be system managed and the users cannot specify the extent size.Correct Answer: BSection: (none)ExplanationQUESTION 33Users of HR schema complain about slower-than-normal performance. On investigation the DBA "First Test, First Pass" - 45Oracle 1Z0-042 Examfound that maintenance was recently performed on some of the tables. The DBA traced the query that takes longer than normal to execute.View the Exhibit exhibit_before.After the DBA resolves the problem, the query performs normally.View the Exhibit exhibit_after.What action would the DBA have taken to resolve the performance problem?A.analyzed the EMPLOYEES table to collect the current statisticsB.moved the EMPLOYEES table in to a locally managed tablespaceC.moved the EMPLOYEES table to another location in the same tablespaceD.reorganized the associated indexes for the EMPLOYEES table that were in an unusable stateE.moved the indexes associated with the EMPLOYEES table to the same tablespace where theEMPLOYEES table existsCorrect Answer: DSection: (none)ExplanationExplanation/Reference:"First Test, First Pass" - 46Oracle 1Z0-042 ExamQUESTION 34Which three statements are true regarding the logical structure of the Oracle database? (Choose three.)A.Each segment contains one or more extents.B.Multiple tablespaces can share single data file.C. A data block is the smallest unit of I/O for data files.D.It is possible to have tablespaces of different block sizes in a database.E.Each data block in the database always corresponds to one OS block.Correct Answer: ACDSection: (none)ExplanationQUESTION 35You have to shut down the database instance with the ABORT option because of a hardware failure. Which statement is true about the subsequent opening of the database?A.The database would open normally.B.The database would not open, and it would stop at mount stage.C.The database would open after automatically performing instance recovery.D.The database would not open, and you have to perform database recovery to open it.Correct Answer: CSection: (none)ExplanationQUESTION 36While planning to manage more than one database in your system, you perform the following activities:1. Organize different categories of files into independent subdirectories.2. Use consistent naming convention for database files.3. Separate administrative information pertaining to each database.Which option corresponds to the type of activities performed by you?A.Oracle Managed FilesB.Oracle Grid ArchitectureC.Optimal Flexible ArchitectureD.Oracle database architectureCorrect Answer: CSection: (none)ExplanationQUESTION 37What is the implication of setting the initialization parameter FAST_START_MTTR_TARGET to 0 in your database?A.MTTR Advisor would be disabled.B.Redo Log Advisor would be disabled.C.Automatic tuning of checkpoint would be disabled.D.Checkpoint information would not be written to the alert log file."First Test, First Pass" - 47Oracle 1Z0-042 ExamCorrect Answer: CSection: (none)ExplanationQUESTION 38While setting up an Oracle database for one of your critical applications, you want to ensure that the database is backed up at regular intervals without your intervention. What should you do to achieve the objective?A.configure the database to run in ARCHIVELOG modeB.configure the Flash Recovery Area to enable automatic database backupC.schedule the database backup using DBMS_JOB package after creating the databaseD.schedule the database backup using Recovery Manager (RMAN) commands after creating thedatabaseE.schedule the database backup using Database Configuration Assistant (DBCA) while creating thedatabaseCorrect Answer: ESection: (none)ExplanationQUESTION 39You require the Oracle server to manage the undo segments and space among various active sessions automatically. You created an undo tablespace, UNDO_TBS1, in your database. Which two additional steps would you perform to achieve this? (Choose two.)A.Set the UNDO_RETENTION parameter to 900 or more.B.Create an initial undo segment in the undo tablespace.C.Enable the retention guarantee for the undo tablespace.D.Set the UNDO_TABLESPACE parameter to UNDO_TBS1.E.Set the UNDO_MANAGEMENT initialization parameter to AUTO.Correct Answer: DESection: (none)ExplanationQUESTION 40You want to set up the Oracle Database 10g installation to follow the French language, with France as the territory, and the date to be displayed in French for all users' sessions. Which environmental variable would you set to achieve this objective?A.NLS_LANGB.NLS_LANGUAGEC.NLS_TERRITORYD.NLS_CHARACTERSETE.NLS_DATE_LANGUAGEF.NLS_LENGTH_SEMANTICSG.NLS_NCHAR_CHARACTERSETCorrect Answer: AQUESTION 41The HR user owns the EMP table. The HR user grants privileges to the SCOTT user by using this command:SQL> GRANT SELECT,INSERT,UPDATE ON emp TO scott WITH GRANT OPTION;"FirstTest, FirstPass" - 48Oracle 1Z0-042 ExamThe SCOTT user executes this command to grant privileges to the JIM user:SQL> GRANT SELECT,INSERT,UPDATE ON hr.emp TO jim;Now the HR user decides to revoke privileges from JIM by using this command:SQL> REVOKE SELECT,INSERT,UPDATE ON emp FROM jim;Which statement is true after HR issues the REVOKE command?A.The command succeeds and privileges are revoked from JIM.B.The command fails because SCOTT still has privileges with him.C.The command fails because HR cannot revoke the privileges from JIM.D.Only HR can perform SELECT, INSERT, and UPDATE operations on the EMP table.Correct Answer: CSection: (none)ExplanationQUESTION 42You define an alert to be raised when the USERS tablespace usage has reached 80% of the total space. Which area would you refer to, in order to confirm that the alert has been raised due the event?A.the alert.log fileB.the DBA_ALERTS viewC.the Database Control Home pageD.the Database Control performance pageE.the Database Control Maintenance pageCorrect Answer: CSection: (none)ExplanationQUESTION 43A user wants to connect to the database instance from an application that is running on a remote machine. Which tools should the DBA use to establish the required configuration to ensure that the user is able to connect to the database instance? (Choose two.)A.Data PumpB.Oracle Net ManagerC.Oracle Enterprise ManagerD.Oracle Universal Installer (OUI)E.Database Configuration Assistant (DBCA)Correct Answer: BCQUESTION 44In the PROD database you have granted the RESUMABLE system privilege to the CONNECT role. Resumable space operation has been enabled for all user sessions. You want users NOT to be aware of any kind of space-related problems while performing transactions. Instead, you want the problem to be resolved by a database trigger automatically. Which combination of triggering time and event would you use to achieve this objective?"First Test, First Pass" - 49Oracle 1Z0-042 ExamA.AFTER CREATEB.AFTER SUSPENDC.BEFORE CREATED.AFTER TRUNCATEE.BEFORE SUSPENDF.AFTER INSERT OR DELETE OR UPDATEG.BEFORE INSERT OR DELETE OR UPDATECorrect Answer: BSection: (none)ExplanationQUESTION 45View the Exhibit and examine the output.Which statement describes the conclusion?A.The users should use bind variables instead of literals in the query.B.The dictionary cache is consuming more space than the library cache.C.The shared pool size should be increased to accommodate the SQL statements.D.Preparing indexes on the tables used in the SQL statements would improve the library cacheperformance.Correct Answer: ASection: (none)ExplanationQUESTION 46Which two statements are true regarding the SGA_TARGET initialization parameter? (Choose two.)。

电商平台推广与数据分析题库（附参考答案）一、单选题（共49题，每题1分，共49分）1.在对新品/滞销品进行标题优化时，尽量选择哪类关键词能获得比较精准的搜索流量。

（）A、核心词B、长尾词C、营销词D、热词正确答案：B2.在网站中搜索词拆解比较简单，在对搜索词拆解之后，一般会出现完全匹配、部分匹配、分词匹配和同义词匹配等情况，以下描述不正确的是（）A、分词匹配，即将搜索词作为两个独立的词组分别出现在标题中的相同位置B、同义词匹配，即用同义词对搜索词进行替换后的网站推荐C、部分匹配，即对搜索词拆解后，网站关键词中只出现了部分搜索词D、完全匹配，即网站中完整地出现了搜索词，并且关键词的位置也相同正确答案：A3.以下哪个方面不能决定商品权重。

（）A、作弊处罚B、商品人气C、商品单价D、商品产出正确答案：C4.打开量子恒道的流量概况默认状态下会展现最近多长时间内的流量波形图? ( ) .A、7天B、30天C、15天D、3天正确答案：A5.关于店铺服务指标的相关描述错误的是（）。

A、纠纷退款率高往往意味着平台介入处理退款的次数多B、退货退款自主完结时间长，往往意味着店铺在处理售中和售后问题上C、品质退款是指买家因商品质量问题发起的退款D、品质退款率高在一定程度上意味着店铺的服务能力和服务水平存在问题正确答案：D6.以下不属于作弊处罚项目的是（）A、提高价格B、重复铺货C、SKU作弊D、重复开店正确答案：A7.关键词出现在不同地方，有不同的效果，以下吸引力对比正确的是（）A、标题=网页描述B、不出现关键词＞标题C、标题+网页描述=网页描述D、网页描述＞不出现关键词正确答案：D8.网店经营者根据自己的需求与推广目标设置人群溢价，溢价人群越精准，宝贝的（）就会越高A、点击量B、购买率C、点击率D、展现量正确答案：C9.下列因素中与自建网站的相关性无关的是（）A、关键词字数B、关键词密度（词频)C、关键词分布D、关键词匹配度正确答案：A10.淘客是按照哪种方式来计费的( )A、CPTB、CPMC、CPC正确答案：D11.某直通车账户对推广计划设置上午折扣为80%，访问过该店铺的用户溢价20%，则上午9时，当浏览过店铺商品的用户搜索某关键词，该关键词出价1.5元，系统实际出价为多少？A、1.5B、1.44C、1.2D、1.6正确答案：B12.不同的匹配方式有不同的特点，设置（）可以实现精准引流A、固定匹配B、定向匹配C、广泛匹配D、精准匹配正确答案：D13.在进行关键词挖掘时，下列做法不正确的是（）A、关键词挖掘的范围越大越好B、网店要定期更新关键词词库C、网店可以采用多种不同的关键词挖掘方法进行关键词挖掘D、挖掘关键词时要考虑用户的搜索习惯正确答案：A14.SEM推广计划可以分为关键词推广和（）推广A、常用词B、竞价C、定向D、核心词正确答案：C15.SEM账户结构大致分为四个层级，从高到低依次是（）A、推广计划、账户、推广组（推广单元）、关键词与创意B、账户、推广组（推广单元）、推广计划、关键词与创意意C、账户、推广计划、推广组（推广单元）、关键词与创意D、推广计划、推广组（推广单元）、账户、关键词与创意正确答案：C16.新品/滞销品进行标题优化，应该尽量选择下列哪种关键词（）A、行业热词B、行业短词C、曝光度高的词D、竞争度小的词正确答案：D17.创意的好坏直接决定了能否吸引用户点击至网店（）A、内部详情页B、搜索词C、落地页D、售后服务正确答案：A18.信息流广告展现量高、点击量高、落地页访问量低，需要着重排查哪些问题？（）A、页面设计不符合用户体验B、创意内容与目标用户群体不相关C、广告定向设置是否过窄D、页面打开速度过慢正确答案：D19.当进行推广计划地域设置的时候，设置了只有江苏ip消费者才有机会看到推广商品，以下能看到推广信息的是（）A、江苏人在北京居住B、坐高铁路过江苏C、江苏附近省市D、北京人在江苏居住正确答案：D20.关于商品标题优化的描述不正确的是（）。

ocp 082题库解析OCP 082 题库解析：1Z0-082 考试主要涵盖Oracle Database 12c和19c的相关知识。

以下是一些重点题库解析：1.不可用索引会自动删除segment：正确。

当索引不可用时，Oracle 数据库会自动删除相关的segment。

但请注意，如果索引分区后，某个分区的索引不可用，其他分区的索引仍然存在。

2.私有临时表：这个特性在Oracle 18c中引入。

私有临时表在创建时，仅当前会话的用户可以访问。

当会话结束时，表会被自动删除。

3.数据库性能优化：要优化数据库性能，可以采用以下方法：a. 合理设计表结构和索引。

b. 调整SQL语句，避免使用子查询和多表连接。

c. 调整数据库参数，如缓存大小、日志文件大小等。

d. 监控和分析数据库性能，根据性能报告进行优化。

4.备份和恢复：Oracle数据库支持热备份和冷备份。

热备份可以在数据库运行时进行，而冷备份需要在数据库关闭时进行。

备份策略可以根据业务需求和数据重要性进行选择。

5.RMAN（远程备份管理器）：RMAN是Oracle数据库备份和恢复的核心工具。

它可以用于全备份、增量备份、归档日志备份等。

同时，R MAN还可以用于数据库的恢复，如实例恢复、介质恢复等。

6.数据泵：Oracle数据泵是一种用于在Oracle数据库之间传输数据的技术。

它可以实现批量传输、实时传输和全表传输等。

数据泵的使用可以提高数据迁移的效率和可靠性。

7.自动化管理：Oracle数据库提供了自动化管理功能，如自动备份、自动监控、自动扩容等。

这些功能可以帮助数据库管理员更高效地管理数据库，降低运维成本。

总结：OCP 082题库主要考察Oracle数据库的基本概念、管理和优化技术。

要顺利通过考试，需要对Oracle数据库的各个层面有一定了解，并掌握相关的管理和优化工具。

在备考过程中，多做题库练习，了解考试重点和难点，提高自己的实际操作能力。

ocp082题库讲解摘要：一、OCP 082 题库简介二、OCP 082 题库重点内容概述三、OCP 082 题库学习方法与策略四、OCP 082 题库实战经验分享五、总结与建议正文：OCP 082 题库是Oracle 认证体系中的一门重要课程，主要针对Oracle 数据库管理员（Oracle Certified Professional，简称OCP）的认证考试。

通过学习OCP 082 题库，考生可以全面掌握Oracle 数据库的管理、维护、优化等技术，为Oracle 数据库的稳定运行提供有力保障。

本文将从OCP 082 题库简介、重点内容概述、学习方法与策略、实战经验分享等方面进行详细讲解，帮助考生更好地备战OCP 082 题库考试。

一、OCP 082 题库简介OCP 082 题库是Oracle 认证体系中的一门课程，主要面向已经掌握Oracle 数据库基础知识的考生。

通过学习本课程，考生将深入学习Oracle 数据库的管理、维护、优化等技术，提高自己在Oracle 数据库领域的专业技能。

OCP 082 题库涵盖了Oracle 数据库的各个层面，包括数据库架构、表空间管理、数据泵、备份与恢复、性能优化等内容。

二、OCP 082 题库重点内容概述1.数据库架构：了解Oracle 数据库的各个组件及其作用，包括实例、表空间、数据文件、控制文件等。

2.表空间管理：学习如何创建、扩容、删除表空间，以及如何为表空间分配和管理存储资源。

3.数据泵：掌握Oracle 数据泵的工作原理、配置方法以及如何使用数据泵进行数据导入和导出。

4.备份与恢复：学习Oracle 数据库的备份策略、备份方法以及恢复过程，包括RMAN 全备份、增量备份、归档日志备份等。

5.性能优化：掌握如何分析Oracle 数据库的性能瓶颈，并学习性能优化的相关技术和方法，如SQL 优化、索引优化、内存优化等。

三、OCP 082 题库学习方法与策略1.系统学习：按照OCP 082 题库的课程大纲，从基础知识开始，逐步深入学习，形成完整的知识体系。

ocp 考试题型OCP（Oracle Certified Professional）认证是针对Oracle数据库专业人员的一种全球性认证。

凭借OCP认证，可以证明自己在设计、开发和管理Oracle数据库方面具备专业的技能和知识。

在考试中，存在不同类型的题型，以下将对OCP考试题型进行详细的介绍。

1. 单选题单选题是OCP考试中最常见的题型之一。

在单选题中，为了测试考生对特定概念、技术或应用的理解和掌握程度，会提供一个问题和多个备选答案，考生需要选择出唯一正确的答案。

举例：Question: Oracle数据库中，以下哪个命令用于创建一个新的表？A. CREATE INDEXB. CREATE TRIGGERC. CREATE PROCEDURED. CREATE TABLE在这个问题中，正确答案是D，因为在Oracle数据库中，创建新表需要使用CREATE TABLE命令。

2. 多选题多选题是OCP考试中的另一个常见题型。

与单选题类似，多选题也会提供一个问题和多个备选答案，但考生需要选择所有正确的答案。

举例：Question: 以下哪些语句可以修改Oracle数据库中已有表的列？A. ALTER TABLEB. UPDATE TABLEC. MODIFY COLUMND. CHANGE COLUMN在这个问题中，正确答案是A和C，因为ALTER TABLE和MODIFY COLUMN可以用于修改已有表的列。

3. 填空题填空题是OCP考试中用于测试考生对特定概念或语法的掌握程度的一种题型。

考生需要根据问题的要求，在空白处填写正确的答案。

举例：Question: 使用Oracle SQL语句查询表中的所有数据，可使用_____命令。

在这个问题中，正确答案是SELECT。

4. 情景题情景题是对考生在实际工作场景中解决问题的能力的测试。

会给出一个具体的情景描述，考生需要根据情境选择合适的解决方案。

举例：Question: 在一个高负载的Oracle数据库环境中，发现部分查询性能下降。

ocp考试试题
OCP考试试题涵盖了Oracle数据库管理领域的多个方面，包括数据库设计、SQL编程、PL/SQL编程、数据库性能调优、数据库安全等。

以下是OCP考试试题的简要介绍：
1.数据库设计：主要测试考生设计数据库结构、关系、数据
完整性和安全性的能力。

2.SQL编程：测试考生编写、优化SQL查询和语句的能力，
以及使用SQL进行数据操作和数据检索的能力。

3.PL/SQL编程：测试考生编写、调试和管理PL/SQL程序的
能力，以及在存储过程、函数和触发器中使用PL/SQL进行编程的能力。

4.数据库性能调优：测试考生分析数据库性能问题、优化数
据库性能的能力，包括查询优化、索引优化、分区优化等方面。

5.数据库安全：测试考生设置和管理数据库安全的能力，包
括用户管理、权限管理、审计等方面的知识。

此外，OCP考试试题还可能涉及到Oracle的其他方面，如Oracle的网络管理、集群技术等。

考生需要全面掌握Oracle 数据库管理知识，才能顺利通过OCP考试。

网店运营推广师题库+参考答案一、单选题（共43题，每题1分，共43分）1.电子商务平台的店铺服务指标不包括以下哪一项A、无理由退货率B、退货退款自主完结时长C、纠纷退款率D、品质退款率正确答案：A2.新品/滞销品进行标题优化，应该尽量选择下列哪种关键词（）A、行业短词B、曝光度高的词C、竞争度小的词D、行业热词正确答案：C3.目前ERP信息系统可以分成两种类型，一种是第三方平台提供服务，另一种（）。

A、通过应用平台进行下载的ERP系统B、在开发型平台上研发的ERP系统C、成品套装的ERP系统D、自行研发正确答案：D4.在信息流推广中，以下关于实时竞价方式说法不正确的是（）A、实时竞价广告计费遵循下一名计费制B、实时竞价排名主要依据广告展示的预估收益C、实时竞价每分钟只能进行1次D、实时竞价是把每一个用户每一次的页面浏览进行拍卖正确答案：C5.场景营销的特点不包括（）A、公平性B、随机性C、不相关性D、多样性正确答案：A6.下列关于SEO优化的说法不正确的是（）A、SEO优化与付费推广是相辅相成，互相促进的B、SEO优化流量的变化趋势和直通车推广流量的变化趋势是正相关的C、SEO可能会降低付费推广的转化率和推广效果D、做好SEO优化有助于提升店铺的总体流量正确答案：C7.关键词出价时，按照市场平均价的150%出价为1.32元，则关键词市场平均价是（）元A、0.66B、0.55C、0.88D、0.77正确答案：C8.下列属于淘宝站内数据分析工具的是（）A、生意参谋B、谷歌趋势C、数据纵横D、百度指数正确答案：A9.淘宝商品发布时，以下哪项可能导致商品展示在错误的类目下？A、属性错选B、用户错选C、地址错填D、类目错放正确答案：D10.长尾关键词流量总和与核心关键词流量总和相比（）总流量大A、无法比较B、长尾词C、一样大D、核心关键词正确答案：B11.在日常生活中，我们经常见到像满*送*，满*减*等各种各项的搭配销售方式，以下哪项原则是做任何优惠活动都要遵守的基本原则？（）A、优惠要有感知度B、优惠的实现要很难C、优惠要有隐蔽性D、优惠的实现要很简单正确答案：A12.FBA是（）提供的物流配送业务，具体指卖家把自己在平台上销售的产品库存直接送到平台当地市场的仓库中。

ocp 题库解析OCP（Open Closed Principle）是面向对象设计中的一个重要原则，它要求软件实体（类、模块、函数等）应该对扩展开放，对修改关闭。

也就是说，一个软件实体应该是可以扩展的，而不需要修改。

OCP 题库解析指的是对 OCP 原则相关题目的解析和讨论。

首先，我们来看一些关于 OCP 原则的基本概念。

OCP 原则要求我们设计软件实体时要考虑未来的扩展性，避免对现有代码进行修改，而是通过扩展现有代码来实现新功能。

这通常可以通过使用抽象类、接口、多态等方式来实现。

例如，我们可以定义一个接口或抽象类，然后针对不同的需求编写不同的实现类，这样在新增功能时只需要新增实现类，而不需要修改原有的代码。

在解析 OCP 题库时，我们需要深入理解 OCP 原则，并且掌握如何在实际代码中应用这一原则。

我们可以从以下几个方面来分析和解答相关题目：1. OCP 原则的含义和作用，首先我们可以解释 OCP 原则的概念，以及它对软件设计的重要性和作用。

我们可以举例说明采用OCP 原则的优点，以及不遵守该原则可能带来的问题。

2. 如何设计满足 OCP 原则的代码，我们可以讨论如何设计满足 OCP 原则的代码结构，比如通过接口、抽象类、依赖倒置等方式来实现代码的可扩展性和灵活性。

可以举例说明如何利用设计模式来实现 OCP 原则，比如策略模式、装饰者模式等。

3. 题目分析和解答，针对具体的 OCP 题目，我们可以逐个进行分析和解答，包括题目中涉及的代码设计、扩展需求、可能的修改方式等。

我们可以通过具体的例子来说明如何设计满足 OCP 原则的代码，并且讨论每种设计方式的优缺点。

总的来说，解析 OCP 题库需要对 OCP 原则有深入的理解，同时需要具备丰富的实际编程经验和设计能力。

通过深入的讨论和分析，我们可以帮助学习者更好地掌握和应用 OCP 原则，从而提高代码的质量和可维护性。

ocp考试题库OCP（Oracle Certified Professional）考试是由甲骨文公司推出的一项技术认证考试，旨在验证考生对Oracle数据库管理和开发的专业技能。

为了帮助考生更好地备考和应对这一考试，必须建立一个全面而有效的OCP考试题库。

本文将介绍并论述如何构建一个具有质量保证的OCP考试题库。

一、题库的重要性题库是考试准备的关键组成部分。

它不仅提供了考生熟悉OCP考试题型和格式的机会，更重要的是，它能够帮助考生了解和学习OCP 考试的知识点和技能要求。

一个好的题库应该包含全面、准确、有针对性的考题，能够覆盖OCP考试的各个方面，帮助考生全面而高效地准备这个考试。

二、题库的内容组成1. 基础知识题：涵盖数据库原理、SQL语言基础、PL/SQL编程等基础知识。

2. 实践题：通过给出实际情境，要求考生运用自己的知识和技能进行问题解决。

3. 综合题：综合考察考生的数据库管理和开发能力，要求考生综合运用所学知识解决复杂问题。

4. 案例题：通过给出真实的案例，要求考生分析问题、设计解决方案、进行性能调优等能力。

5. 预测题：根据考试的历年趋势和重点，预测考试可能出现的题目类型和内容。

三、题目质量保证题目质量是题库的核心，它决定了考生备考的效果。

为了保证题目的质量，应该遵循以下原则：1. 准确性：题目的表述应该准确、清晰，不留歧义。

2. 实用性：题目应该基于实际情境和现实问题，能够反映实际工作中的要求。

3. 平衡性：题目应该涵盖OCP考试的各个知识点和技能要求，保持全面性。

4. 难度适中：题目的难度应该符合考试要求，既不能过于简单，也不能过于复杂。

5. 多样性：题目应该多样化，涵盖不同类型的题目，如选择题、填空题、案例分析题等。

四、题目的编写与审核题目的编写和审核都需要经过专业人员的严格把关，确保题目的质量和准确性。

编写人员应具备丰富的数据库管理和开发经验，熟悉OCP考试的考点和要求。

在编写和审核过程中，应遵循以下原则：1. 标准化：题目应该按照固定的格式和规范进行编写。

ocp 082试题
题目1：关于Oracle数据库，以下哪个选项是正确的？
A) SQL Plus只能用于Oracle数据库的连接
B) SQL Plus可以与SQL Developer同时使用
C) SQL Developer只能用于Oracle数据库的连接
D) SQL Developer不支持与其他数据库的连接
正确答案：B
解析：实际上，SQL Plus和SQL Developer都可以用于Oracle数据库的连接。

因此，选项A和选项C都不正确。

另外，SQL Developer不仅支持Oracle数据库，还可以与其他数据库进行连接，所以选项D也不正确。

题目2：关于SQL语句中的INTERSECT操作符，以下哪个选项是正确的？
A) 在同一个SQL语句中可以多次使用INTERSECT操作符
B) INTERSECT操作符会处理选择列中的空值
C) INTERSECT操作符的优先级高于UNION或UNION ALL
D) INTERSECT操作符会忽略空值
正确答案：B
解析：INTERSECT操作符用于查询两个结果集的交集，它不会忽略空值。

因此，选项A和选项D都不正确。

另外，根据运算符的优先级规则，INTERSECT操作符的优先级低于UNION和UNION ALL。

所以选项C也不正确。