1Z0-851 Exam Details
-
Exam Code
:1Z0-851 -
Exam Name
:Oracle Solaris 11 System Administration -
Certification
:Oracle Certifications -
Vendor
:Oracle -
Total Questions
:290 Q&As -
Last Updated
:Dec 10, 2021
Oracle 1Z0-851 Online Questions & Answers
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Question 271:
Given:
10.
interface A { void x(); }
11.
class B implements A { public void x() {} public void y() {} }
12.
class C extends B { public void x() {} } And:
20.
java.util.List list = new java.util.ArrayList();
21.
list.add(new B());
22.
list.add(new C());
23.
for (A a : list) {
24.
a.x();
25.
a.y();
26.
}
What is the result?
A. The code runs with no output.
B. An exception is thrown at runtime.
C. Compilation fails because of an error in line 20.
D. Compilation fails because of an error in line 21.
E. Compilation fails because of an error in line 23.
F. Compilation fails because of an error in line 25. -
Question 272:
Given classes defined in two different files:
1. package util;
2. public class BitUtils {
3. public static void process(byte[] b) { /* more code here */ }
4. }
1. package app;
2. public class SomeApp {
3. public static void main(String[] args) {
4. byte[] bytes = new byte[256];
5. // insert code here
6. }
7. }
What is required at line 5 in class SomeApp to use the process method of BitUtils?
A. process(bytes);
B. BitUtils.process(bytes);
C. util.BitUtils.process(bytes);
D. SomeApp cannot use methods in BitUtils.
E. import util.BitUtils.*; process(bytes); -
Question 273:
Given:
11.
public interface A { public void m1(); }
12.
13.
class B implements A { }
14.
class C implements A { public void m1() { } }
15.
class D implements A { public void m1(int x) { } }
16.
abstract class E implements A { }
17.
abstract class F implements A { public void m1() { } }
18.
abstract class G implements A { public void m1(int x) { } }
What is the result?
A. Compilation succeeds.
B. Exactly one class does NOT compile.
C. Exactly two classes do NOT compile.
D. Exactly four classes do NOT compile.
E. Exactly three classes do NOT compile. -
Question 274:
DRAG DROP
Select and Place:
-
Question 275:
Given that Triangle implements Runnable, and:
31.
void go() throws Exception {
32.
Thread t = new Thread(new Triangle());
33.
t.start();
34.
for(int x = 1; x < 100000; x++) {
35.
//insert code here
36.
if(x%100 == 0) System.out.print("g");
37.
} }
38.
public void run() {
39.
try {
40.
for(int x = 1; x < 100000; x++) {
41.
// insert the same code here
42.
if(x%100 == 0) System.out.print("t");
43.
}
44.
} catch (Exception e) { }
45.
}
Which two statements, inserted independently at both lines 35 and 41, tend to allow both threads to temporarily pause and allow the other thread to execute? (Choose two.)
A. Thread.wait();
B. Thread.join();
C. Thread.yield();
D. Thread.sleep(1);
E. Thread.notify(); -
Question 276:
Given that the current directory is empty, and that the user has read and write privileges to the current directory, and the following:
1.
import java.io.*;
2.
public class Maker {
3.
public static void main(String[] args) {
4.
File dir = new File("dir");
5.
File f = new File(dir, "f");
6.
}
7.
}
Which statement is true?
A. Compilation fails.
B. Nothing is added to the file system.
C. Only a new file is created on the file system.
D. Only a new directory is created on the file system.
E. Both a new file and a new directory are created on the file system. -
Question 277:
Given:
11.
static void test() throws RuntimeException {
12.
try {
13.
System.out.print("test ");
14.
throw new RuntimeException();
15.
}
16.
catch (Exception ex) { System.out.print("exception "); }
17.
}
18.
public static void main(String[] args) {
19.
try { test(); }
20.
catch (RuntimeException ex) { System.out.print("runtime "); }
21.
System.out.print("end ");
22.
}
What is the result?
A. test end
B. Compilation fails.
C. test runtime end D. test exception end
D. A Throwable is thrown by main at runtime. -
Question 278:
Given:
1.
interface DoStuff2 {
2.
float getRange(int low, int high); }
3.
4.
interface DoMore {
5.
float getAvg(int a, int b, int c); }
6.
7.
abstract class DoAbstract implements DoStuff2, DoMore { } 8.
9.
class DoStuff implements DoStuff2 {
10.
public float getRange(int x, int y) { return 3.14f; } } 11.
12.
interface DoAll extends DoMore {
13.
float getAvg(int a, int b, int c, int d); }
What is the result?
A. The file will compile without error.
B. Compilation fails. Only line 7 contains an error.
C. Compilation fails. Only line 12 contains an error.
D. Compilation fails. Only line 13 contains an error.
E. Compilation fails. Only lines 7 and 12 contain errors.
F. Compilation fails. Only lines 7 and 13 contain errors.
G. Compilation fails. Lines 7, 12, and 13 contain errors. -
Question 279:
Click the Exhibit button. What is the result?
A. 4321
B. 0000
C. An exception is thrown at runtime.
D. Compilation fails because of an error in line 18. -
Question 280:
Given:
1.
public class Threads5 {
2.
public static void main (String[] args) {
3.
new Thread(new Runnable() {
4.
public void run() {
5.
System.out.print("bar");
6.
}}).start();
7.
}
8.
}
What is the result?
A. Compilation fails.
B. An exception is thrown at runtime.
C. The code executes normally and prints "bar".
D. The code executes normally, but nothing prints.
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