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Sana Fathima M
CUS-0001/2024
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Exam Reports
Exam Management
Manage Exam
Core Java & Concepts
Free
Durations
Total Durations
:
45 Minutes
Attended Durations
:
30 Minutes
Certificate & Questions
Certificate
Question Bank
Marks
Your Marks
:
30
Total Marks
:
100
Possitive Mark
:
10
(Per Question)
Negative Mark
:
15
(Per Question)
Questions
Correct Answer
:
06
Questions
Incorrect Answer
:
02
Questions
Attempted / Not
:
08
/
02
Total Questions
:
10
Question & Answer
1. Is Java Platform Independent if then how ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
Java is platform-independent because it is compiled to a bytecode that can be run on any device that has a Java Virtual Machine (JVM).
Time You Took
:
3.75
Minutes
Correct
2. How many types of packages are there in Java ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
User-defined packages.
Other defined packages.
None of these
Time You Took
:
3.75
Minutes
Correct
3. What is JVM ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
JVM is a virtual machine that enables the execution of Java bytecode. The JVM acts as an interpreter between the Java programming language and the underlying hardware.
Time You Took
:
3.75
Minutes
Correct
4. What is JIT ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
The Just-In-Time (JIT) compiler is a component of the runtime environment that improves the performance of Java™ applications by compiling bytecodes to native machine code at run time.
Time You Took
:
3.75
Minutes
Correct
5. Which component is used to compile, debug and execute the java programs ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
JRE
JIT
JDK
JVM
Time You Took
:
3.75
Minutes
Correct
6. Which of the following is OOPS concept in Java ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
Object-oriented
Use of pointers
Portable
Dynamic and Extensible
Time You Took
:
4
Minutes
Correct
7. Which of the following is a type of polymorphism in Java Programming ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
Multiple polymorphism
Compile time polymorphism
Multilevel polymorphism
Execution time polymorphism
Time You Took
:
3.25
Minutes
Incorrect
8. What will be the output of the following Java program ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
0 256
0 64
256 0
64 0
Not Attempted
9. What is the extension of compiled java classes ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
.txt
.js
.class
.java
Time You Took
:
4
Minutes
Incorrect
10. Which exception is thrown when java is out of memory ?
Hints :
javac compiler compiles the program to form a bytecode or .class file
Explanation :
The bytecode can be created on any System and can be executed in any other system despite hardware or software
Memory Error
Out of Memory Error
Memory Out of Bounds Exception
Memory Full Exception
Not Attempted