Technology Questions

Q:

Which of the following type casts will convert an Integer variable named amount to a Double type ?

A) (int to double) amount B) int (amount) to double
C) int to double(amount) D) (double) amount
 
Answer & Explanation Answer: D) (double) amount

Explanation:
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6 5772
Q:

Values that are used to end loops are referred to as _____ values.

A) stop B) sentinel
C) end D) finish
 
Answer & Explanation Answer: B) sentinel

Explanation:
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4 5762
Q:

How variable declaration in c++ differs that in c?

Answer

C requires all the variables to be declared at the beginning of a scope but in c++ we can declare variables anywhere in the scope. This makes the programmer easier to understand because the variables are declared in the context of their use.

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Subject: C++

1 5756
Q:

What is Mainframe Testing?

Answer

Mainframe Testing is similar to client-server applications testing, but you have to know how to operate basic TSO and ISPF commands and menus, view mainframe files, look at and use SDSF or other output tool, log on CICS and transactions, use FTP or another transfer protocol, submit the batch job - it's for QA testing of mainframe applications.

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0 5751
Q:

How do we create a DHTML drop-down menu?

Answer

- In order to create a DHTML drop down menu we need JavaScript API. The API (Application Programming Interface) consists of core set of cross-browser JavaScript functions to make DHTML programming easy and quick. This API enables moving and hiding page elements as well as acts as getter and setter of page elements attributes.


- Second we define on image object and off image object and string containing the URL of the "off" version.


- Then we create the menu items, label items and sub-menu items. If we wish we can use images also.


- Then we need to define our own global variables that will be used by the menu. Using global goes against oops design but makes sharing data easier.


- Create the menubar object, adding the menu labels and writing menubars.


- Create menu object, adding menu items and writing menus.


- Hiding and displaying the menus and attaching stylesheet.

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Subject: Web Technology

5 5730
Q:

What items are important in every Android project?

Answer

 These are the essential items that are present each time an Android project is created:


- AndroidManifest.xml


- build.xml


- bin/


- src/


- res/


- assets/

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Q:

How to identify a given positive decimal number as even/odd without using % or / operator ?

Answer

You may be very good at coding,but if you questioning how on earth you could solve this problem.Then here is a solution. If you remember the good old days of our primary school then the solution is easy,"division is a matter of iterative subtraction".


public class TestEvenOdd {
public static void main(String arg[ ]){
int num=6;
int result=num;
while(result>=2){
result=result-2;
}
if(result==1){
System.out.println("The number is odd");
}else{
System.out.print("The number is even");
}
}
}

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Subject: Java

3 5684
Q:

How we get IP address of client,previous reference page etc?

Answer

By using $_SERVER['REMOTE_ADDR'], $_['HTTP_REFERER'] etc.

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Subject: PHP

0 5666