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2021 Nov 1Z0-850 exam answers
Q71. - (Topic 1)
Which two are associated with the web tier in a multitier web-based application? (Choose two.)
A. generate dynamic content
B. implement business logic
C. process user input
D. integrate with database systems
E. store state persistently
Answer: A,C
Q72. - (Topic 2)
Which two are true about JavaScript and HTML? (Choose two.)
A. JavaScript code is always processed on the server, NOT on the client.
B. JavaScript is part of the J2SE.
C. JavaScript provides more client-side functionality than HTML alone.
D. JavaScript is guaranteed to be portable across all browsers on any platform.
E. JavaScript and HTML are NOT compiled.
Answer: C,E
Q73. - (Topic 1)
Which two are true about the java and javac commands? (Choose two.)
A. java -classpath lets you specify one or more directories to be used by the JVM to locate class files.
B. java -version will print the version of the JVM.
C. java -classpath will print the classpath used by the JVM.
D. javac -version will print the OS version for the machine on which the JDK is installed.
E. javac -D lets you specify the destination directory for the compiled class files.
Answer: A,B
Q74. - (Topic 2)
What type of relationship is needed to represent the relationship between students and the courses they are enrolled in at a university?
A. a one-to-one association
B. a one-to-one composition
C. a many-to-many composition
D. a many-to-many association
E. a one-to-many association
F. a one-to-many composition
Answer: D
Q75. - (Topic 1)
Given:
3.
class TestVars {
4.
int x, y;
5.
char c;
6.
// insert code here
7.
}
Which three, inserted independently at line 6, allow the code to compile? (Choose three.)
A. int z = x/y;
B. boolean t = y;
C. char d = (char) y;
D. boolean bool = "false";
E. int x = y++;
F. int g = c;
Answer: A,C,F
Down to date 1Z0-850 free exam questions:
Q76. - (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?
A. Compilation fails due to an error in line 6.
B. The code compiles without error.
C. Compilation fails due to an error in line 2.
D. Compilation fails due to an error in line 4.
E. Compilation fails due to an error in line 1.
Answer: A
Q77. - (Topic 2)
Given:
1.
public interface Player {
2.
// insert code here
3.
// insert code here
4.
}
5.
class F implements Player {
6.
public void play(){
7.
// ...
8.
}
9.
public void stop(){
10.
// ...
11.
}
12.
}
Which two, inserted independently at lines 2 and 3, allow the code to compile? (Choose two.)
A. void play(); void stop();
B. final void play(); final void stop();
C. public void play(); public void stop();
D. void play(); int stop();
E. static void play(); static void stop();
F. private void play(); private void stop();
Answer: A,C
Q78. - (Topic 2)
Which two are provided by the JNDI API? (Choose two.)
A. an application-level interface used by the application components to access naming services
B. a framework for handling data in different MIME types, originating in different formats and locations
C. a service-provider interface to attach providers of directory services
D. an interface to query directory services using SQL
Answer: A,C
Q79. - (Topic 1)
Which is an appropriate description of session beans?
A. They are used to store persistent data.
B. They are used to implement business processes.
C. They are used to represent data in an RDBMS.
D. They are used to share data among clients.
Answer: B
Q80. - (Topic 1)
Which is true?
A. The JDBC API is included in J2SE.
B. JDBC is used to connect to MOM (Message-Oriented Middleware) products.
C. All JDBC drivers are pure Java.
D. The JDBC API is an extension of the ODBC API.
Answer: A