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Q161. - (Topic 2)
Which technology is used to develop components that interact with server-side objects in a web-based application?
A. XML
B. servlets
C. HTML
D. JavaScript
Answer: B
Q162. - (Topic 2)
Which two are true? (Choose two.)
A. A class that extends another class CANNOT be well encapsulated.
B. If class B is well encapsulated, then class A can access class B's instance variables only through a method invocation.
C. A class with a public instance variable CANNOT be well encapsulated.
D. Polymorphism only applies when one class encapsulates another.
Answer: B,C
Q163. - (Topic 2)
Given:
5.
// insert code here
6.
public void eat();
7.
}
8.
9.
// insert code here
10.
public void eat() {
11.
System.out.println("eating dinner");
12.
}
13.
}
Which, inserted at lines 5 and 9, allows the file to compile?
A. 5. class Animal {
9. public class Tiger implements Animal {
B. 5. interface Animal {
9. public class Tiger implements Animal {
C. 5. class Animal {
9. public class Tiger subclasses Animal {
D. 5. interface Animal {
9. public class Tiger extends Animal {
E. 5. class Animal {
9. public class Tiger extends Animal {
F. 5. interface Animal {
9. public class Tiger subclasses Animal {
Answer: B
Q164. - (Topic 1)
Given:
1.
class Test {
2.
public static void main(String args[]) {
3.
int num1 = 10, num2 = 20, result;
4.
result = calc(num1, num2);
5.
System.out.println(result);
6.
}
7.
8.
// insert code here
9.
}
Which, inserted at line 8, produces the output 30?
A. static int calc(int n1, int n2) { return; }
B. public int calc(int n1, int n2) { return n1 + n2; }
C. public int calc(int n1, int n2) { return; }
D. static int calc(int n1, int n2) { return n1 + n2; }
E. static void calc(n1, n2) { return (n1 + n2); }
F. static int calc(int n1, n2) { return n1, n2; };
Answer: D
Renovate 1Z0-850 exam question:
Q165. - (Topic 2)
Given:
1.
public class Bar {
2.
int size;
3.
public static void main(String[] args) {
4.
Bar b = new Bar();
5.
b.size = 27;
6.
int i = b.go(b.size);
7.
System.out.print(b.size + " : " + i);
8.
}
9.
public int go(int size) {
10.
size++;
11.
return size;
12.
}
13.
}
What is the result?
A. 27 : 28
B. Compilation fails.
C. 27 : 27
D. 28 : 28
E. 28 : 27
Answer: A
Q166. - (Topic 1)
Which two are associated with the web tier in a J2EE web-based application? (Choose two.)
A. servlets
B. JAX-RPC
C. JMS
D. entity beans
E. JSP
Answer: A,E
Q167. - (Topic 1)
Given:
3.
int num = 0, count;
4.
while ( num < 3 ) {
5.
num++;
6.
// insert code here
7.
System.out.println("num = " + num + " : count = " + count);
8.
}
9.
}
Which, inserted at line 6, produces the following output?
num = 1 : count = 1 num = 1 : count = 2 num = 2 : count = 1 num = 2 : count = 2 num = 3 : count = 1 num = 3 : count = 2
A. while ( ++count < 3 ) {
B. for ( count = 1 ; count < 3 ; count++ ) {
C. for ( count = 0 ; count < 3 ; count++ ) {
D. while ( ++count < 2 ) {
E. for ( count = 1 ; count < 2 ; count++ ) {
Answer: B
Topic 2, Volume B
Q168. - (Topic 2)
Given:
1.
class Test {
2.
public static void main(String[] args) {
3.
String str = "Hello";
4.
str = str.replace("Bye");
5.
System.out.println("str : " + str);
6.
}
7.
}
What is the result?
A. Compilation fails.
B. str : HelloBye
C. str : Byelo
D. str : Hello
E. str : Bye
F. str : HeBye
G. The code runs with no output.
Answer: A