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建立计算机网络的主要目的是实现计算机资源的共享。计算机资源主要指计算机的Ⅰ．硬件、软件Ⅱ．Web服

建立计算机网络的主要目的是实现计算机资源的共享。计算机资源主要指计算机的 Ⅰ．硬件、软件 Ⅱ．Web服务器、数据库服务器 Ⅲ．数据 Ⅳ．网络操作系统

A．Ⅰ和Ⅱ

B．Ⅱ和Ⅳ

C．Ⅰ、Ⅱ和Ⅳ

D．Ⅰ和Ⅲ

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更多“建立计算机网络的主要目的是实现计算机资源的共享。计算机资源主…”相关的问题

第1题

WhilecreatingajobclassusingtheDBMS_SCHEDULERpackage,yousettheloggingleveltoLOGGING_RUNS.Whatwouldbetheimpactofthissetting?()

A.OracleSchedulerwouldwritedetailedinformationtothejoblogforeachrunofeachjobinthejobclass.

B.OracleSchedulerwouldwritedetailedinformationtothejoblogforthefirstrunofeachjobinthejobclass.

C.OracleSchedulerwouldwritedetailedinformationtothejoblogforeachrunofonlythefirstjobinthejobclass.

D.OracleSchedulerwouldwritedetailedinformationforalloperationsperformedonalljobsinthejobclass.

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第2题

YouworkasadatabaseadministratorforCertkiller.com.YourdatabaseisinNOARCHIVELOGmode.Thedatab

asehasbeenconfiguredwiththreeredologsgroups，andtherehavebeenfivelogswitches.Youlostonenon-system-criticaldatafilefromyourdatabase.Whichmethodwouldyouusetorecoverthedatafile？（）

A.Restoreallthedatafilesandopenthedatabase

B.Createthedatafileandperformtablespacerecovery

C.Noneedtorestoreanyfile，justrecoverthedatabase

D.Restoreonlythesystemdatafileandrecoverthedatabase

E.Restoreonlylostdatefileandperformtablespacerecovery

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第3题

Examine this statement:SELECT student_id, gpaFROM student_gradesWHERE gpa > &&v

alue;You run the statement once, and when prompted you enter a value of 2.0. A report is produced. What happens when you run the statement a second time?（）

A.An error is returned.

B.You are prompted to enter a new value.

C.A report is produced that matches the first report produced.

D.You are asked whether you want a new value or if you want to run the report based on the previous value.

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第4题

A new report process containing a complex query is written, with high impact on the databa

se. You wantto collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests.For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and theCONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING.What should you do to accomplish this task?（）

A. Execute the query and view Active Session History (ASH) for information about the query.

B. Enable SQL trace for the query.

C. Create a database operation, execute the query, and use the DBMS_SQL_MONITOR. REPORT_SQL_MONITOR function to view the report.

D. Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.

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第5题

YouworkasadatabaseadministratorforCertkiller.com.Inthemiddleofatransaction,ausersessionwasabnormallyterminatedbuttheinstanceisstillupandthedatabaseisopen.Whichtwostatementsaretrueinthisscenario?()

A.EventViewergivesmoredetailsonthefailure.

B.Thealertlogfilegivesdetailedinformationaboutthefailure.

C.PMONrollsbackthetransactionandreleasesthelocks.

D.SMONrollsbackthetransactionandreleasesthelocks.

E.Thetransactionisrolledbackbythenextsessionthatreferstoanyoftheblocksupdatesbythefailedtransaction.

F.Datamodifiedbythetransactionuptothelastcommitbeforetheabnormalterminationisretainedinthedatabase.

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第6题

Evaluate the set of SQL statements:CREATE TABLE dept(deptno NUMBER(2),dname VARCHAR2(14),loc VARCHAR2(13));ROLLBACK;DESCRIBE DEPTWhat is true about the set?()

A.The DESCRIBE DEPT statement displays the structure of the DEPT table.

B.The ROLLBACK statement frees the storage space occupied by the DEPT table.

C.The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.

D.The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.

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第7题

Your multitenant container database (CDB) contains three pluggable database (PDBs). You fi

nd that the control file is damaged. You plan to use RMAN to recover the control file. There are no startup triggers associated with the PDBs.Which three steps should you perform to recover the control file and make the database fully operational?（）

A. Mount the container database (CDB) and restore the control file from the control file auto backup.

B. Recover and open the CDB in NORMAL mode.

C. Mount the CDB and then recover and open the database, with the RESETLOGS option.

D. Open all the pluggable databases.

E. Recover each pluggable database.

F. Start the database instance in the nomount stage and restore the control file from control file auto backup.

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第8题

ViewtheExhibitandexaminethestructureoftheORDERStable.Whichtaskwouldrequiresubqueries?()

A.displayingthetotalordervalueforsalesrepresentatives161and163

B.displayingtheordertotalforsalesrepresentative161intheyear1999

C.displayingthenumberofordersthathaveordermodeonlineandorderdatein1999

D.displayingthenumberoforderswhoseordertotalismorethantheaverageordertotalforallonlineorders

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第9题

YourbossatCertkiller.comwantsyoutoclarifyOracle10g.Whichconditioninyourdatabaseforcesyoutoperformonlyconsistentbackups?()

A.Thedatabaseisinmountstate.

B.Oneofthetablespacesisoffline.

C.Oneofthetablespacesisreadonly.

D.ThedatabaseoperatesinARCHIEVELOGmode.

E.ThedatabaseoperatesinNOARCHIEVELOGmode.

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第10题

YourdatabaseoperatesinARCHIVELOGmode.User-managed&ensp

YourdatabaseoperatesinARCHIVELOGmode.User-managedconsistentbackupsareperformedevery

Sundaynight.OnTuesday，clientAdropsatableat8：00a.m.asfollows：

SQL>DROPTABLEcust_ordPURGE；

Tabledropped.

ClientBexecutesaqueryat9：00a.m.onthesametableasfollows：

SQL>SELECT*FROMcust_ord；

SELECT*FROMcust_ord

*ERRORatline1：ORA-00942：tableorviewdoesnotexist

ClientBneedsthedroppedtableandreportstheproblemtoyou.Withreferencetothisscenario，whichactionshouldyoutake？（）

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