单选题Given this fragment in a servlet： 23.if（req.isUserInRole（"Admin"）） { 24.// do stuff 25.} And the following fragment from the related Java EE deployment descriptor： 812. 813.Admin 814.Administrator 815. 900. 901.Admin 902.Administrator 903. What is the 

第1题：

Which two statements are true about the security-related tags in a valid Java EE deployment descriptor？（）

• A、Every  tag must have at least one  tag.
• B、A  tag can have many  tags.
• C、A given  tag can apply to only one  tag.
• D、A given  tag can contain from zero to many  tags.
• E、It is possible to construct a valid  tag such that，for a given resource，no user rolescan access that resource.

第2题：

A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command： java games.cards.Poker What allows the user to do this？（）

• A、put Poker.jar in directory /stuff/java，and set the CLASSPATH to include /stuff/java
• B、put Poker.jar in directory /stuff/java，and set the CLASSPATH to include /stuff/java/*.jar
• C、Put Poker.jar in directory /stuff/java，and set the CLASSPATH to include /stuff/java/Poker.jar
• D、put Poker.jar in directory /stuff/java/games/cards，and set the CLASSPATH to include /stuff/java
• E、put Poker.jar in directory /stuff/java/games/cards，and set the CLASSPATH to include /stuff/java/*.jar
• F、put Poker.jar in directory /stuff/java/games/cards，and set the CLASSPATH to include /stuff/java/Poker.jar

第3题：

Given this fragment from a Java EE deployment descriptor： 124. beta.html 125. alpha.html And this request from a browser：http：//www.sun.com/SCWCDtestApp/register Which statement is correct，when the container receives this request？（）

• A、This deployment descriptor is NOT valid.
• B、The container first looks in the register directory for beta.html.
• C、The container first looks in the register directory for alpha.html.
• D、The container first looks for a servlet mapping in the deployment descriptor.

第4题：

Which code fragments will succeed in initializing a two-dimensional array named tab with a size that will cause the expression tab[3][2] to access a valid element？（）   CODE FRAGMENT a：  int[][] tab = {  { 0， 0， 0 }，  { 0， 0， 0 }  }；   CODE FRAGMENT b：  int tab[][] = new int[4][]；  for （int i=0； i   CODE FRAGMENT c：  int tab[][] = {  0， 0， 0， 0，  0， 0， 0， 0，  0， 0， 0， 0，  0， 0， 0， 0  }；   CODE FRAGMENT d：  int tab[3][2]；   CODE FRAGMENT e：  int[] tab[] = { {0， 0， 0}， {0， 0， 0}， {0， 0， 0}， {0， 0， 0} }；  

• A、Code fragment a.
• B、Code fragment b.
• C、Code fragment c.
• D、Code fragment d.
• E、Code fragment e.

第5题：

You deployed a Java EE Shared Library and want to use it from an application that is also deployed on the same cluster.    Which two manifest attributes must be specified at a minimum with corresponding values in the deployment descriptor of the application that requires?（）

• A、Implementation-Version
• B、Specification-Version
• C、Extension-Name  
• D、Specification-Vendor
• E、Implementation-Vendor

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第13题：

If you want to use the Java EE platform’s built-in type of authentication that uses a custom HTML page for authentication. Which two statements are true？（）

• A、Your deployment descriptor will need to contain this tag： CUSTOM.
• B、The related custom HTML login page must be named loginPage.html.
• C、When you use this type of authentication， SSL is turned on automatically.
• D、You must have a tag in your deployment descriptor that allows you to point to both a login HTML pageand an HTML page for handling any login errors.
• E、In the HTML related to authentication for this application， you must use predefined variable names fort he variables that store the user and password values.

第14题：

Given this fragment from a Java EE deployment descriptor： 341. 342.java.lang.Throwable  343./mainError.jsp 344. 345. 346.java.lang.ClassCastException  347./castError.jsp 348. If the web application associated with the fragment above throws a ClassCastException.Which statement is true？（）

• A、The deployment descriptor is invalid.
• B、The container invokes mainError.jsp.
• C、The container invokes castError.jsp.
• D、Neither mainError.jsp nor castError.jsp is invoked.

第15题：

Which code fragments will succeed in printing the last argument given on the command line to the standard output， and exit gracefully with no output if no arguments are given？（）   CODE FRAGMENT a：   public static void main（String args[]） {   if （args.length != 0）   System.out.println（args[args.length-1]）；   }   CODE FRAGMENT b：   public static void main（String args[]） {   try { System.out.println（args[args.length]）； }   catch （ArrayIndexOutOfBoundsException e） {}   }   CODE FRAGMENT c：   public static void main（String args[]） {   int ix = args.length；   String last = args[ix]；   if （ix != 0） System.out.println（last）；   }   CODE FRAGMENT d：   public static void main（String args[]） {   int ix = args.length-1；   if （ix > 0） System.out.println（args[ix]）；   }   CODE FRAGMENT e：   public static void main（String args[]） {   try { System.out.println（args[args.length-1]）；  }catch （NullPointerException e） {}   }  

• A、Code fragment a.
• B、Code fragment b.
• C、Code fragment c.
• D、Code fragment d.
• E、Code fragment e.

第16题：

Which element of the web application deployment descriptor defines the servlet class associated with aservlet instance？（）

• A、<class><br/>
• B、<webapp><br/>
• C、<servlet><br/>
• D、<codebase><br/>
• E、<servlet-class>

第17题：

A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command：java games.cards. Poker What allows the user to do this？（）

• A、put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java
• B、put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java/*.jar
• C、put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java/Poker.jar
• D、put Poker.jar in directory /stuff/java/games/cards， and set the CLASSPATH to include /stuff/java

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