Quiz'O Mania Round 1

Write the postfix notation of A+B*C/D?

• ABCD+*/

• AB*/CD+

• ABC*D/+

• ABCD*+/

• A+B*C/D

In object-oriented programming, the process by which one object acquires the properties of another object is called

• Encapsulation

• Overloading

• Inheritance

• Polymorphism

What will be the output of the following Java program?

class leftshift_operator {

public static void main(String args[]) {

byte x = 64;

int i;

byte y;

i = x << 2;

y = (byte) (x << 2);

System.out.print(i + " " + y);

}

}

• 0 256

• 0 64

• 256 0

• 64 0

What should not be done to avoid deadlock?

• Avoid using multiple threads

• Avoid hold several locks at once

• Use interruptible locks

• Execute foreign code while holding a lock

What is true about time slicing?

• Time slicing is OS service that allocates CPU time to available runnable thread

• Time slicing is the process to divide the available CPU time to available runnable thread

• Time slicing depends on its implementation in OS

• Time slicing allocates more resources to thread

What does not prevent JVM from terminating?

• Process

• JVM Thread

• User Thread

• Daemon Thread

Range of singed long and unsigned long variables are.?

• -2147483647 to [phone] to 4294967295

• -2147483648 to [phone] to 4294967296

• -2147483648 to [phone] to 4294967295

• 0 to 4294967295-2147483648 to [phone]

What will be the position of 65 when a max heap is constructed on the input elements 5, 70, 45, 7, 12, 15, 13, 65, 30, 25?

• Root

• last level

• Second level

• Anywhere in heap

What are the basic components of a linked list?

• Head and tail are the only important components

• Data members for the information to be stored and a link to the next item

• Generic class because without this linked list is not possible

• None of the above

Which of the following is not a java profile?

• JProfiler

• Eclipse Profiler

• JVM

• JConsole