Technology Questions

Q:

Give an example for the use of volatile keyword in c++ ?

Answer

Most of the times compilers will do optimization to the code to speed up the program. For example in the below code,


int k = 15;
while( k == 15)


{
// Do something
}


compiler may think that value of 'k' is not getting changed in the program and replace it with 'while(true)', which will result in an infinite loop. In actual scenario, the value of 'k' may be getting updated from outside of the program.


Volatile keyword is used to tell compiler that the variable declared using 'volatile' may be used from outside the current scope, so that compiler won't apply any optimization. This matters only in case of multi-threaded applications.


In the above example if variable 'k' was declared using volatile, compiler will not optimize it. In shot, value of the volatile variables will be read from the memory location directly.

Report Error

View answer Workspace Report Error Discuss

5 5991
Q:

Which containers use a FlowLayout as their default layout ?

Answer

The Panel and Applet classes use the FlowLayout as their default layout.

Report Error

View answer Workspace Report Error Discuss

Subject: Java

3 5990
Q:

What are different data types used in cloud computing?

Answer

Cloud computing is going all together for a different look as it now includes different data types like emails, contracts, images, blogs, etc. The amount of data increasing day by day and cloud computing is requiring new and efficient data types to store them. For example if you want to save video then you need a data type to save that. Latency requirements are increasing as the demand is increasing. Companies are going for lower latency for many applications.

Report Error

View answer Workspace Report Error Discuss

Subject: Cloud Computing

0 5985
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:
Report Error

View Answer Report Error Discuss

4 5959
Q:

Why do you use the App_Code folder in ASP.NET?

Answer

The App_Code folder is automatically present in the project. It stores the files, such as classes, typed data set, text files, and reports. If this folder is not available in the application, you can add this folder. One of the important features of the App_Code folder is that only one dll is created for the complete folder, irrespective of how many files it contains.

Report Error

View answer Workspace Report Error Discuss

Subject: .NET

1 5941
Q:

Explain about AngularJS boot process.

Answer

When the page is loaded in the browser, following action takes place:


HTML document is loaded into the browser, and evaluated by the browser. AngularJS JavaScript file is loaded; the angular global object is created. Next, JavaScript which registers controller functions is executed.


AngularJS scans through the HTML to look for AngularJS applications and views. Once view is located, it then connects that view to the corresponding controller function.


Then, AngularJS executes the controller functions. It then renders the views with data from the model populated by the controller. The page is ready.

Report Error

View answer Workspace Report Error Discuss

Subject: Web Technology

0 5937
Q:

What happens if the list-style-type property is used on a non-list element like a paragraph?

Answer

Here the property will be ignored without having any effect on the paragraph.

Report Error

View answer Workspace Report Error Discuss

Subject: Web Technology

3 5930
Q:

What is the access scope of a protected method?

Answer A protected method can be accessed by the classes within the same package or by the subclasses of the class in any package.
Report Error

View answer Workspace Report Error Discuss

Subject: Java

1 5921