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2017 Jan 1Z0-850 practice test

Q41. - (Topic 1) 

Which three are responsibilties of the business tier in a multitier web-based application with web, business, and EIS tiers? (Choose three.) 

A. to integrate with legacy applications 

B. to provide business logic 

C. to generate dynamic content 

D. to participate in transactions 

E. to process requests from web-based clients 

Answer: A,B,D 


Q42. - (Topic 1) 

Given: 

6.

 int time = 12; 

7.

 if ( time < 12 ) { 

8.

 System.out.println("Good morning"); 

9.

 } 

10.

 // insert code here 

11.

 System.out.println("Good afternoon"); 

12.

 } 

13.

 else if ( time >= 18 ) { 

14.

 System.out.println("Good evening"); 

15.

 } 

Which three, inserted independently at line 10, produce the output Good afternoon? (Choose three.) 

A. else if ( time < 12 || time > 18) { 

B. if ( time >= 12 && time < 18 ) { 

C. else if ( time > 12 && time >= 18 ) { 

D. else if ( time >= 12 || time < 18 ) { 

E. else if ( time > 12 || time <= 18 ) { 

Answer: B,D,E 


Q43. - (Topic 1) 

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

A. java.lang 

B. java.io 

C. java.awt 

D. java.net 

E. javax.swing 

F. java.util 

Answer:


Q44. - (Topic 1) 

Click the Exhibit button. Which is the class name? 

A. name 

B. age 

C. Dog 

D. eat 

E. bark 

Answer:


Q45. - (Topic 1) 

Which J2EE technology is used to generate dynamic content for web-based applications? 

A. JAX-RPC 

B. JNDI 

C. JMS 

D. SOAP 

E. JSP 

Answer:


Far out 1Z0-850 exam answers:

Q46. - (Topic 1) 

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

A. It includes classes for creating buttons and panels. 

B. It is used to create MIDlets. 

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

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

Answer: A,C 


Q47. - (Topic 1) 

Given concrete class B is a subclass of concrete class A, and class A implements interface C, which two are examples of polymorphism? (Choose two.) 

A. use a reference variable of type C to refer to an instance of type B 

B. use a reference variable of type A to refer to an instance of type C 

C. use a reference variable of type C to refer to an instance of type A 

D. use a reference variable of type A to refer to an instance of type B 

E. use a reference variable of type B to refer to an instance of type A 

Answer: A,C 


Q48. - (Topic 1) 

Click the Exhibit button. Which is true? 

A. Diagrams A and B are both valid, but have different meanings. 

B. Both diagrams are invalid. 

C. Diagrams A and B are equivalent. 

D. Only diagram A is valid. 

E. Only diagram B is valid. 

Answer:


Q49. - (Topic 2) 

Which two are true about the composition relationship "A Blip consists of many Blipverts."? (Choose two.) 

A. When a Blipvert is deleted, its Blip should also be deleted. 

B. A Blipvert must be part of at least one Blip. 

C. A Blipvert can be a part of only one Blip. 

D. A Blip must have at least two Blipverts. 

E. When a Blip is deleted, each of its Blipverts should also be deleted. 

Answer: C,E 


Q50. - (Topic 1) 

Given: 

1.

 class X { 

2.

 private Y y; 

3.

 public X(Y y) { this.y = y; } 

4.

 } 

5.

 class Y { 

6.

 private X x; 

7.

 public Y() { } 

8.

 public Y(X x) { this.x = x; } 

9.

 } 

The instance variable y is intended to represent the composition relationship "X is composed of Y." 

Which code correctly maintains this meaning? 

A. X x1 = new X(new Y()); 

X x2 = new X(new Y()); 

B. X xx = new X(null); 

Y y1 = new Y(xx); 

Y y2 = new Y(xx); 

C. Y yy = new Y(); 

X x1 = new X(yy); 

X x2 = new X(yy); 

D. Y y1 = new Y(new X(null)); 

Y y2 = new Y(new X(null)); 

Answer: