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Java Standard Edition 5 and 6, Certified Associate Exam

Question No: 11 – (Topic 1)

Which statement is true?

  1. JMS enables an application to provide flexible, asynchronous data exchange.

  2. JMS provides interfaces to naming and directory services.

  3. The JMS API is located in the java.jms package.

  4. JMS enables an application to provide tightly coupled, distributed communication.

Answer: A

Question No: 12 – (Topic 1)

Which two are true about stateless session beans? (Choose two.)

  1. They are used to represent data stored in an RDBMS.

  2. They implement the JMS API.

  3. They are used to implement business logic.

  4. They CANNOT hold client state.

Answer: C,D

Question No: 13 – (Topic 1)

Which two are true about javax.swing? (Choose two.)

  1. It includes classes for creating buttons and panels.

  2. It is used to create MIDlets.

  3. It is used to create applications that have the same user interface on different platforms.

  4. It uses the native GUI components of each platform.

Answer: A,C

Question No: 14 – (Topic 1)

Which two are true? (Choose two.)

  1. An interface CANNOT be extended by another interface.

  2. An abstract class CANNOT be extended by an abstract class.

  3. An interface can be extended by an abstract class.

  4. An abstract class can implement an interface.

  5. An abstract class can be extended by a concrete class.

  6. An abstract class can be extended by an interface.

Answer: D,E

Question No: 15 – (Topic 1)

Click the Exhibit button.

Which relationships, referenced by the class names involved, are drawn using valid UML notation?

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  1. AB, AC, BD, and CD

  2. only AC, BD, and CD

  3. only AB, AC, and BD

  4. only AB and AC

  5. only BD and CD

Answer: A

Question No: 16 – (Topic 1)

Given:

  1. String s = quot;abcdefgabcquot;;

  2. char c = s.charAt(2); 14.

15. if (c == #39;c#39;)

  1. s = s.replace(#39;c#39;, #39;X#39;);

  2. else if (c == #39;b#39;)

  3. s = s.replace(#39;b#39;, #39;O#39;);

  4. else

  5. s = s.replace(#39;c#39;, #39;O#39;);

  6. System.out.println(s); What is the result?

  1. aOcdefgabc

  2. Compilation fails.

  3. abOdefgabc

  4. abXdefgabc

  5. abOdefgabO

  6. aOcdefgaOc

  7. abXdefgabX

Answer: G

Question No: 17 – (Topic 1)

Which package contains classes used to create data collections, such as maps or queues?

  1. java.lang

  2. java.io

  3. java.awt

  4. java.net

  5. javax.swing

  6. java.util

    Answer: F

    Question No: 18 – (Topic 1)

    Given:

    1. interface A { }

    2. interface B { void b(); }

    3. interface C { public void c(); }

    4. abstract class D implements A,B,C { }

    5. class E extends D {

    6. void b() { }

    7. public void c() { } 8. }

      Which is true?

      1. Compilation fails due to an error in line 6.

      2. The code compiles without error.

      3. Compilation fails due to an error in line 2.

      4. Compilation fails due to an error in line 4.

      5. Compilation fails due to an error in line 1.

Answer: A

Question No: 19 – (Topic 1)

What type of relationship is needed to represent the relationship between students and the courses they are enrolled in at a university?

  1. a one-to-one composition

  2. a one-to-one association

  3. a many-to-many composition

  4. a one-to-many composition

  5. a one-to-many association

  6. a many-to-many association

Answer: F

Question No: 20 – (Topic 1)

Which two are features of JNDI? (Choose two.)

  1. an interface to store and retrieve named Java objects of any type

  2. an interface to search for objects using attributes

  3. a defined common set of messaging concepts and programming strategies

  4. connectivity to databases and other tabular data sources

Answer: A,B

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