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Q21. - (Topic 2) 

Click the Exhibit button. 

Which diagram best represents the relationship "A Dog has four Legs" based on the 

definitions of association and composition? 

A. A 

B. C 

C. D 

D. B 

Answer:


Q22. - (Topic 2) 

Which three are true? (Choose three.) 

A. If abstract class B directly extends abstract class A, class B must implement all abstract methods declared in A. 

B. An abstract class CANNOT be instantiated. 

C. An interface can extend multiple interfaces. 

D. All methods in an abstract class must be abstract. 

E. If concrete class C extends concrete class B, and B implements interface A, then all methods from interface A can be invoked on an instance of C. 

Answer: B,C,E 


Q23. - (Topic 1) 

Given: 

17. class B { } Which demonstrates inheritance? 

A. class A this B { } 

B. class A extends B { } 

C. class A super B { } 

D. class A implements B { } 

Answer:


Q24. - (Topic 2) 

Which two are true? (Choose two.) 

A. JavaScript is the standard J2SE scripting language. 

B. JavaScript includes built-in libraries for invoking methods on Enterprise JavaBeans. 

C. JavaScript can be used to create a rollover image effect in a web page. 

D. JavaScript can only be used in browsers that have the Java Plug-in installed. 

E. JavaScript can be used to validate form input values before they are sent to the server. 

Answer: C,E 


Q25. - (Topic 2) 

Given: 

11. class Cat { 

14.

 public static void main(String [] args) { 

15.

 Cat c1 = new Cat(); 

16.

 Cat c3 = new Cat(); 

17.

 Cat c2 = c1; 

18.

 Cat c4 = c3; 

19.

 c1 = c4; 

20.

 c4 = c2; 

21.

 if (c1 == c2) System.out.print("c1 == c2 "); 

22.

 if (c1 == c3) System.out.print("c1 == c3 "); 

23.

 } 

24.

 } 

What is the result? 

A. The output is unpredictable. 

B. c1 == c2 c1 == c3 

C. No output is produced. 

D. c1 == c3 

E. c1 == c2 

Answer:


Q26. - (Topic 1) 

Which two keywords directly support looping? (Choose two.) 

A. foreach 

B. switch 

C. while 

D. if 

E. for 

Answer: C,E 


Q27. - (Topic 1) 

Which package contains classes to read from, and write to, files? 

A. java.net 

B. javax.swing 

C. javax.file 

D. java.util 

E. java.io 

F. java.lang 

G. java.stream 

Answer:


Q28. - (Topic 1) 

Which Java technology provides a standard API for relational database access? 

A. JDC 

B. JMS 

C. JSP 

D. JNDI 

E. JDBC 

Answer:


Q29. - (Topic 1) 

What keyword is used to create an enumeration? 

A. ENUM 

B. const 

C. enumeration 

D. There is no keyword for creating enumerations. The Enum class must be used instead. 

E. enum 

Answer:


Q30. - (Topic 2) 

Which is a benefit of Swing clients? 

A. They can be used without a JRE on the client. 

B. They are easier to deploy than thin clients. 

C. They can provide a richer graphical user interface experience than thin clients. 

D. They are more universally supported by browsers than thin clients. 

Answer: