Interview Questions

Q:

What is IMS (DB/DC)?

Answer

IMS (Information Management System) is IBMs hierarchical database management system. It has mainly two components: IMS DB and IMS DC (Also know as IMS TM)


IMS DB - IMS/Database Manager as the name implies manages the IMS databases. It is used for physical storage creation and management and data retrieval.


IMS DC / IMS TM - IMS/Data Communications or IMS/Transaction Manager handles online transaction processing system.

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Q:

public abstract class Shape {

private int x;

private int y;

public abstract void draw();

public void setAnchor(int x, int y) {

this.x = x;

this.y = y;

}

}

Which two classes use the Shape class correctly?

A) public class Circle implements Shape { private int radius; B) public abstract class Circle extends Shape { private int radius; }
C) public class Circle extends Shape { private int radius; public void draw(); D) None
 
Answer & Explanation Answer: B) public abstract class Circle extends Shape { private int radius; }

Explanation:

Only B is true

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Q:

Which of the following is not considered a JavaScript operator?

A) new B) this
C) delete D) typeof
 
Answer & Explanation Answer: B) this

Explanation:
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Q:

Javascript is interpreted by

A) Server B) Object
C) Client D) None of the above
 
Answer & Explanation Answer: C) Client

Explanation:

JavaScript is an interpreted language, not a compiled language. A program such as C++ or Java needs to be compiled before it is run.

The source code is passed through a program called a compiler, which translates it into bytecode that the machine understands and can execute.

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Q:

How many of the following will follow JavaBean Listener naming rules?

addListener

addMouseListener

deleteMouseListener

removeMouseListener

registerMouseListener

 

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

Explanation:
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Q:

Which of the following statements are equal for a variable declared in the interface ?

1. int X=10
2. public int X=10
3. public static final int X=10

A) Only 1 and 2 are equal B) Only 2 and 3 are equal
C) All are unequal D) All are equal
 
Answer & Explanation Answer: D) All are equal

Explanation:

All the statements are equal because inside an interface a variable declared will be public static final by default 

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Q:

A lock can be acquired on a class.

The above statement is

A) True B) False
C) Both A and B D) None
 
Answer & Explanation Answer: A) True

Explanation:

A lock can be acquired on a class. This lock is acquired on the class's Class object.

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Q:

Which one of the following is not used to generate dynamic web pages ?

A) PHP B) ASP.NET
C) JSP D) none of the mentioned
 
Answer & Explanation Answer: D) none of the mentioned

Explanation:
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