You want subclasses in any package to have access to members

题目
单选题
You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective?()
A

 public

B

 private

C

 protected

D

 transient

E

 default access

参考答案和解析
正确答案: D
解析: 暂无解析
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相似问题和答案

第1题:

You create a Web site that is for members only. The Web site allows members to create lists of users that have access to information about member profiles. The name of the list is stored in the listName variable. The user name of the user to whom access is given is stored in the username variable.You need to enable members to manage their lists of users.Which code segment should you use?()

A.

B.

C.

D.


参考答案:B

第2题:

Which statement about access lists that are applied to an interface is true?()

A.you can apply multiple access lists with the same protocol or in different…

B.you can config one access list,per direction,per layer 3 protocol

C.you can placeasmanyaccess lists as you want on any interface

D.you can apply ony one access list on any interface


参考答案:D

第3题:

–()–Yes, I'm free then.

A、Do you have any plans for this Saturday?

B、Are you doing anything this Saturday?

C、I'd like to make an appointment with you.

D、I want to know if you are free on Saturday.


参考答案:D

第4题:

You want to check the EMP table in the user, Scott’s schema for block corruption. You also want to fix the corrupted blocks, if any. How will you accomplish the required task?()

  • A、by using the ANALYZE utility
  • B、by using the DBVERIFY utility
  • C、by using the DB_BLOCK_CHECKING parameter
  • D、by using the DBMS_REPAIR package

正确答案:D

第5题:

Which statement about access lists that are applied to an interface is true?()

  • A、you can apply multiple access lists with the same protocol or in different direction.
  • B、you can config one access list,per direction,per layer 3 protocol
  • C、you can place as many access lists as you want on any interface
  • D、you can apply only one access list on any interface

正确答案:B

第6题:

You are the administrator of SQL Server 2000 computer named FABSQL2K01. You create a Data Transformation Services package that contains definition for two transform. data tasks.

The tasks gets data from two text files named Customers and Sales. The DTS package is configured as shown in the exhibit.

You do not want the DTS package to add any data to the server unless both transform. data tasks complete successfully.

You select the use transactions check box of DTS package and the Join transaction of present check box of both transform. data tasks. You then select the fail package on step failure check box of both transform. data tasks.

You want to use the DTS package to import data from the text files to the server. You want to ensure that changes are committed if all imported data is successfully transformed.

What should you do?

A.Select the commit on successful completion check box of the DTS package.

B.Select the commit transaction on successful completion of this step check box of the customers transform. data task.

C.Select the commit transaction on successful completion of this step check box of the sales transform. data task.

D.Select the commit transaction on successful completion of this step check box of both transform. data tasks.


正确答案:A
解析:Explanation:ItispossibletosettheCommitonsuccessfulpackagecompletioncheckboxontheAdvancedTaboftheDTSPropertiesdialogBox.ThischeckboxspecifiesthatifeachindividualSQLstatementisatransactioncompletessuccessfully,thetransactionwillautomaticallybecommitted;andifthestatementhasanerror,thestatementisrolledback.Whenthischeckboxiscleared,theDTSconnectionsoperateinimplicittransactionmodeandthefirstSQLstatementbeginsatransactionthatremainsineffectuntilDTScommitsitorrollsitback.ThenextSQLstatementexecutedafteranycommitorrollbackstartsanewtransaction.IncorrectAnswers:B:TheCommittransactiononsuccessfulcompletionofthisstepcheckboxtreatseachstepinaDTSpackageasseparate.Thus,selectingtheCommittransactiononsuccessfulcompletionofthisstepcheckboxofthecustomerstransform.datataskwouldresultinthistaskbeingcommittedregardlessoftheprogressofthesalestransformationdatatask.C:TheCommittransactiononsuccessfulcompletionofthisstepcheckboxtreatseachstepinaDTSpackageasseparate.Thus,selectingCommittransactiononsuccessfulcompletionofthisstepcheckboxofthesalestransform.datataskwouldresultinthistaskbeingcommittedregardlessoftheprogressofthecustomer’stransformationdatatask.D:TheCommittransactiononsuccessfulcompletionofthisstepcheckboxtreatseachstepinaDTSpackageasseparate.Thus,selectthecommittransactiononsuccessfulcompletionofthisstepcheckboxofbothtransform.datataskswouldresultinthetwopartsbeingtreatedasseparateandeachpartbeingcommittedregardlessoftheprogressintheother.

第7题:

You want subclasses in any package to have access to members of a superclass. Which is the mostrestrictive access modifier that will accomplish this objective?() 

  • A、 Public
  • B、 Private
  • C、 Protected
  • D、 Transient
  • E、 No access modifier is qualified

正确答案:C

第8题:

You are the administrator of a SQL Server 2000 computer. Each evening after business hours, you perform. database maintenance tasks. You create a Data Transformation Services package to populate the data warehouse. MAPI is not installed on the server.

You want to schedule the DTS package to run each night. You want to attend to other duties while the DTS package is executing. You also want to be notified if the DTS package fails.

What should you do?

A.Select the DTS packages log package execution to SQL server check box. Create a SQL server event alert to notify you if the package fails.

B.Select the DTS packages write completion status to event log check box. Create a SQL server event alert to notify you if the package fails.

C.Configure the DTS package to include an on failure precedence constraint and a send mail task. Configure the send mail task to notify you if the package fails.

D.Configure the DTS package to include an on failure precedence constraint and a send mail task. Configure the execute process task to execute a not send command that will notify you if the package fails.


正确答案:B
解析:Explanation:Whenjobsarecompleted(successfullyornot),thesubsystemreturnsaresultstatus(withoptionalmessages)toSQLServerAgent.SQLServerAgentthenrecordsthecompletionstatusinboththeoperatingsystem'sapplicationlogandthejobhistorytableinSQLServerandoptionallysendsane-mailreportoranSQLServereventalertofthejobstatustothedesignatedoperator.IncorrectAnswers:A:Weareinterestedtowhenthepackagehascompleted.Thecompletionstatus,notthelogpackageexecution,shouldbeusedtotrapthecompletionofapackage.TheexecutionstatusconcernsLastruntime,Lastrunstatus,Lastrunmessage,etc.C,D:TheMessagingApplicationProgrammingInterface(MAPI)isn'tinstalled.MAPIisneededforSQLServertosende-mail.Noe-mailcanbesendbySQLServerinthisscenario.

第9题:

Which statement about access lists that are applied to an interface is true?()

  • A、you can apply multiple access lists with the same protocol or in different…
  • B、you can config one access list,per direction,per layer 3 protocol
  • C、you can placeasmanyaccess lists as you want on any interface
  • D、you can apply ony one access list on any interface

正确答案:D

第10题:

Which statement about access lists that are applied to an interface is true?()

  • A、you can apply multiple access lists with the same protocol or in different…
  • B、you can config one access list,per direction,per layer 3 protocol
  • C、you can place as many access lists as you want on any interface
  • D、you can apply ony one access list on any interface

正确答案:D

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