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单选题
You have created a JSP that includes instance variables and a great deal of scriptlet code. Unfortunately，after extensive load testing， you have discovered several race conditions in your JSP scriptlet code. To fixthese problems would require significant recoding， but you are already behind schedule. Which JSP codesnippet can you use to resolve these concurrency problems？（）
A
<%@ page isThreadSafe=’false’ %>
B
<%@ implements SingleThreadModel %>
C
<%! implements SingleThreadModel %>
D
<%@ page useSingleThreadModel=’true’ %>
E
<%@ page implements=’SingleThreadModel’ %>
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更多 “单选题You have created a JSP that includes instance variables and a great deal of scriptlet code. Unfortunately，after extensive load testing， you have discovered several race conditions in your JSP scriptlet code. To fixthese problems would require significant recoding， but you are already behind schedule. Which JSP codesnippet can you use to resolve these concurrency problems？（）A %@ page isThreadSafe=’false’ %B %@ implements SingleThreadModel %C %! implements SingleThreadModel %D %@ page useSingleThreadModel=’true’ %E %@ page implements=’SingleThreadModel’ %” 相关考题
考题
For manageability purposes， you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippetmust you use to declare this instance variable in the JSP Document？（）A、jsp：declarationint count = 0；jsp：declarationB、%! int count = 0； %C、jsp：declaration.instanceint count = 0；. jsp：declaration.instanceD、jsp：scriptlet.declarationint count = 0；. jsp：scriptlet.declaration
考题
While designing your database， you have created the EMPLOYEES table as an index/x7forganized table （IOT）. You want to create a bitmap index on the JOB_ID column to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）A、A primary key must have been created.B、A mapping table must have been created.C、An overflow tablespace must have been specified.D、The PCTTHRESHOLD option must have been specified.
考题
You are creating a new JSP page and you need to execute some code that acts when the page is firstexecuted， but only once. Which three are possible mechanisms for performing this initialization code？（）A、In the init method.B、In the jspInit method.C、In the constructor of the JSP’s Java code.D、In a JSP declaration， which includes an initializer block.E、In a JSP declaration， which includes a static initializer block.
考题
You have created a JSP that includes instance variables and a great deal of scriptlet code. Unfortunately，after extensive load testing， you have discovered several race conditions in your JSP scriptlet code. To fixthese problems would require significant recoding， but you are already behind schedule. Which JSP codesnippet can you use to resolve these concurrency problems？（）A、%@ page isThreadSafe=’false’ %B、%@ implements SingleThreadModel %C、%! implements SingleThreadModel %D、%@ page useSingleThreadModel=’true’ %E、%@ page implements=’SingleThreadModel’ %
考题
Given that Thing is a class， how many objects and reference variables are created by the following code？（） Thing item， stuff； item = new Thing（）； Thing entity = new Thing（）；A、One object is createdB、Two objects are createdC、Three objects are createdD、One reference variable is createdE、Two reference variables are createdF、Three reference variables are created.
考题
You have built your own light-weight templating mechanism. Your servlets， which handle each request，dispatch the request to one of a small set of template JSP pages. Each template JSP controls the layout ofthe view by inserting the header， body， and footer elements into specific locations within the template page.The URLs for these three elements are stored in request scoped variables called， headerURL， bodyURL，and footerURL， respectively. These attribute names are never used for other purposes. Which JSP codesnippet should be used in the template JSP to insert the JSP content for the body of the page？（）A、jsp：insert page=’${bodyURL}’ /B、jsp：insert file=’${bodyURL}’ /C、jsp：include page=’${bodyURL}’ /D、jsp：include file=’${bodyURL}’ /E、jsp：insert page=’%= bodyURL %’ /
考题
While designing your database， you have created the EMPLOYEEStable as an index-organized （IOT）. You want to create a bitmap index on the JOD_IDcolumn to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）A、 A primary key must have been created.B、 A mapping table must have been created.C、 An overflow tablespace must have been specified.D、 The PCTTHRESHOLD option must have been specified.
考题
Using Oracle Scheduler you have scheduled two jobs， JOB_A and JOB_B， to run at 9：00 p.m. every Friday. You want both the jobs to use a single resource plan， WEEKEND_PLAN. Which task must have already been performed to enable you to achieve this objective？（）A、 A window must have been created with the WEEKEND_PLAN resource plan.B、 A program must have been created with the WEEKEND_PLAN resource plan.C、 A job class must have been created with the WEEKEND_PLAN resource plan.D、 A windows group must have been created with the WEEKEND_PLAN resource plan.
考题
You work as a database administrator for Supportcenter.cn. In your production database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections. Which activity must you have completed before accomplishing this task？（）A、You must have started the database instance in restricted mode.B、You must have started the database instance inNORMALmode.C、You must have started the database instance with server parameter file.D、You must have started the database instance but must not have mounted.E、You must have started the database instance but must not have opened.
考题
You need to design a strategy for identifying the number of instances that any one SQL Server 2005 computer will support. What should you do？（）A、Specify that each server must have one instance for each customer.B、Specify that each server must each have only one instance.C、Specify that each server must have one instance for each database that is hosted on that server.D、Specify that each server must have one instance for each customer who has one or more databases that are hosted on that server.
考题
Which of the following statements about variables and their scopes are true？ （） A、 Instance variables are member variables of a class.B、 Instance variables are declared with the static keyword.C、 Local variables defined inside a method are created when the method is executed.D、 Local variables must be initialized before they are used.
考题
You work in a company which uses SQL Server 2008. You are the administrator of the company database. In your company there is a server which contains a default SQL Server 2005 instance. For a new application, you have to install a SQL Server 2008 instance on the server. Your company CIO assigns a task to you. You must make sure that the respective certified third-party applications have access to both database instances. You have to achieve this goal without changing the existing application environments. So what should you do to achieve this by using as little database administrative effort as possible?（）A、You should install SQL Server 2008 as a named instance, and make the new application to use the new instance. B、You should install SQL Server 2008 as the default instance, and make the new application to use the default instance. C、You should upgrade the SQL Server 2005 application to use SQL Server 2008. D、You should upgrade the SQL Server 2005 instance to a SQL Server 2008 instance.
考题
单选题You work as an application developer at Certkiller .com. You have recently created an application that includes the code shown below. public delegate stringGetFileContentsDel （）； public string GetFileContents （） { //Process file and return results } You now need to invoke the GetFileContents method asynchronously. You have to ensure that the code you use to invoke the GetFileContents method will continue to process other user instructions， and displays the results as soon as the GetFileContents method finishes processing.What should you do？（）A
AB
BC
CD
D
考题
单选题You execute the following commands to audit database activities: SQL ALTER SYSTEM SET AUDIT_TRIAL=DB, EXTENDED SCOPE=SPFILE; SQL AUDIT SELECT TABLE, INSERT TABLE, DELETE TABLE BY JOHN By SESSION WHENEVER SUCCESSFUL; Which statement is true about the audit record that generated when auditing after instance restarts?（）A
One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command on a table, and contains the SQL text for the SQL Statements.B
One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command, and contains the execution plan for the SQL statements.C
One audit record is created for the whole session if john successfully executes a SELECT, INSERT, or DELETE command, and contains the execution plan for the SQL statements.D
One audit record is created for the whole session if JOHN successfully executes a select command, and contains the SQL text and bind variables used.E
One audit record is created for the whole session if john successfully executes a SELECT, INSERT,or DELETE command on a table, and contains the execution plan, SQL text, and bind variables used.
考题
单选题For manageability purposes， you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippetmust you use to declare this instance variable in the JSP Document？（）A
jsp：declarationint count = 0；jsp：declarationB
%! int count = 0； %C
jsp：declaration.instanceint count = 0；. jsp：declaration.instanceD
jsp：scriptlet.declarationint count = 0；. jsp：scriptlet.declaration
考题
单选题You have configured flash recovery area in your database and you set the following Initialization parameters for your database instance： LOG_ARCHIVE_DEST 1 = ，，LOCATION=/disk1/arch MANDATORY’ LOG _ARCHIEVE_DEST 2 = ，，LOCATION=/disk2/arch’ LOG_ARCHIVK_DEST_3 = ，，LOCATION=/diSk3/arch LOG_ARCH1VK_DEST_4 = ’ LOCATION=/disk4/arch’ LOG_ARCHIVE_MIN-SUCCEED_DEST = 2 While the database instance is functional，you realized that the destination set by the LOG_ARCHIVE_DEST_I parameter Is not available for the archived redo log file to be created in. All redo log groups have been used. What happens in an event of log switch？（）A
The online redo log file Is not allowed to be overwritten.B
The archived redo log files are written to the flash recovery area until the MANDATORY destination is made available.C
The database instance will crash because the archived redo log file cannot be created in a destination set as MANDATORY.D
The destination set by the LOG_ARCHIVE_DEST_1 parameter is ignored and the archived redo log files are created in the next two available locations to guarantee archive log success.
考题
单选题You work in a company which uses SQL Server 2008. You are the administrator of the company database. In your company there is a server which contains a default SQL Server 2005 instance. For a new application, you have to install a SQL Server 2008 instance on the server. Your company CIO assigns a task to you. You must make sure that the respective certified third-party applications have access to both database instances. You have to achieve this goal without changing the existing application environments. So what should you do to achieve this by using as little database administrative effort as possible?（）A
You should install SQL Server 2008 as a named instance, and make the new application to use the new instance. B
You should install SQL Server 2008 as the default instance, and make the new application to use the default instance. C
You should upgrade the SQL Server 2005 application to use SQL Server 2008. D
You should upgrade the SQL Server 2005 instance to a SQL Server 2008 instance.
考题
单选题You work as a database administrator for Supportcenter.cn. In your production database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections. Which activity must you have completed before accomplishing this task？（）A
You must have started the database instance in restricted mode.B
You must have started the database instance inNORMALmode.C
You must have started the database instance with server parameter file.D
You must have started the database instance but must not have mounted.E
You must have started the database instance but must not have opened.
考题
多选题You are creating a new JSP page and you need to execute some code that acts when the page is firstexecuted， but only once. Which three are possible mechanisms for performing this initialization code？（）AIn the init method.BIn the jspInit method.CIn the constructor of the JSP’s Java code.DIn a JSP declaration， which includes an initializer block.EIn a JSP declaration， which includes a static initializer block.
考题
单选题While designing your database， you have created the EMPLOYEES table as an index/x7forganized table （IOT）. You want to create a bitmap index on the JOB_ID column to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）A
A primary key must have been created.B
A mapping table must have been created.C
An overflow tablespace must have been specified.D
The PCTTHRESHOLD option must have been specified.
考题
单选题While designing your database， you have created the EMPLOYEEStable as an index-organized （IOT）. You want to create a bitmap index on the JOD_IDcolumn to make queries faster. Which task must have been completed so that you are able to create the bitmap index？（）A
A primary key must have been created.B
A mapping table must have been created.C
An overflow tablespace must have been specified.D
The PCTTHRESHOLD option must have been specified.
考题
多选题Given that Thing is a class， how many objects and reference variables are created by the following code？（） Thing item， stuff； item = new Thing（）； Thing entity = new Thing（）；AOne object is createdBTwo objects are createdCThree objects are createdDOne reference variable is createdETwo reference variables are createdFThree reference variables are created.
考题
多选题Which of the following statements about variables and their scopes are true？ （）AInstance variables are member variables of a class.BInstance variables are declared with the static keyword.CLocal variables defined inside a method are created when the method is executed.DLocal variables must be initialized before they are used.
考题
单选题Using Oracle Scheduler you have scheduled two jobs， JOB_A and JOB_B， to run at 9：00 p.m. every Friday. You want both the jobs to use a single resource plan， WEEKEND_PLAN. Which task must have already been performed to enable you to achieve this objective？（）A
A window must have been created with the WEEKEND_PLAN resource plan.B
A program must have been created with the WEEKEND_PLAN resource plan.C
A job class must have been created with the WEEKEND_PLAN resource plan.D
A windows group must have been created with the WEEKEND_PLAN resource plan.
考题
单选题You have built your own light-weight templating mechanism. Your servlets， which handle each request，dispatch the request to one of a small set of template JSP pages. Each template JSP controls the layout ofthe view by inserting the header， body， and footer elements into specific locations within the template page.The URLs for these three elements are stored in request scoped variables called， headerURL， bodyURL，and footerURL， respectively. These attribute names are never used for other purposes. Which JSP codesnippet should be used in the template JSP to insert the JSP content for the body of the page？（）A
jsp：insert page=’${bodyURL}’ /B
jsp：insert file=’${bodyURL}’ /C
jsp：include page=’${bodyURL}’ /D
jsp：include file=’${bodyURL}’ /E
jsp：insert page=’%= bodyURL %’ /
考题
多选题Which statements concerning the correlation between the inner and outer instances of non-static inner classes are true？（）AMember variables of the outer instance are always accessible to inner instances， regardless of their accessibility modifiers.BMember variables of the outer instance can never be referred to using only the variable name within the inner instance.CMore than one inner instance can be associated with the same outer instance.DAll variables from the outer instance that should be accessible in the inner instance must be declared final.EA class that is declared final cannot have any inner classes.
考题
单选题Your web application views all have the same header， which includes the tag in the elementof the rendered HTML. You have decided to remove this redundant HTML code from your JSPs and put itinto a single JSP called /WEB-INF/jsp/header.jsp. However， the title of each page is unique， so you havedecided to use a variable called pageTitle to parameterize this in the header JSP， like this： 10.${param.pageTitle} Which JSP code snippet should you use in your main view JSPs to insert the header and pass thepageTitle variable？（）A
jsp：insert page=’/WEB-INF/jsp/header.jsp’. ${pageTitle=’Welcome Page’}. /jsp：insertB
jsp：include page=’/WEB-INF/jsp/header.jsp’. ${pageTitle=’Welcome Page’}. /jsp：includeC
jsp：include file=’/WEB-INF/jsp/header.jsp’. ${pageTitle=’Welcome Page’}. /jsp：includeD
jsp：insert page=’/WEB-INF/jsp/header.jsp’. jsp：param name=’pageTitle’ value=’Welcome Page’ / . /jsp：insertE
jsp：include page=’/WEB-INF/jsp/header.jsp’. jsp：param name=’pageTitle’ value=’Welcome Page’ / . /jsp：include
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