Technology Questions

Q:

Which of the following is not the other name of attriibute?

A) Data member B) Instance variable
C) instance D) Data filed
 
Answer & Explanation Answer: C) instance

Explanation:

Instance is an object not an attribute

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Filed Under: Java

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Q:

What are pass by reference and pass by value ?

Answer

When an object is passed by value, this means that a copy of the object is passed. Thus, even if changes are made to that object, it doesn’t affect the original value. 


When an object is passed by reference, this means that the actual object is not passed, rather a reference of the object is passed. Thus, any changes made by the external method, are also reflected in all places.

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Subject: Java

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Q:

List the advantages of inheritance

Answer

- Inheritence permits code reusability. 


- Reusability saves time in program development. 


- It encourages the reuse of proven and debugged high-quality software which reduces the problems after a system becomes functional.

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Subject: C++

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Q:

Difference between a query and a statement in SQL?

Answer

An SQL statement is a string of characters that conforms to the syntax and format specified in the international standard.


A query is a statement that returns a record-set.

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Subject: SQL

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Q:

What is ASP.NET?

Answer

ASP.NET is a specification developed by Microsoft to create dynamic Web applications, Web sites, and Web services. It is a part of .NET Framework. You can create ASP.NET applications in most of the .NET compatible languages, such as Visual Basic, C#, and J#. The ASP.NET compiles the Web pages and provides much better performance than scripting languages, such as VBScript. The Web Forms support to create powerful forms-based Web pages. You can use ASP.NET Web server controls to create interactive Web applications. With the help of Web server controls, you can easily create a Web application.

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Subject: .NET

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Q:

How can visual basic be used for server side scripting?

Answer

Visual basic can be used for server side scripting. A component designed with Visual basic will not have any user interface instead provides the functionality of Active X to other programs via COM. This form of technique allows server side functionality and add in module.

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Q:

In a single virtual machine, the Java programming language passes arguments by

A) Refference B) Value
C) Both A and B D) None
 
Answer & Explanation Answer: B) Value

Explanation:

In single virtual machine,JVM passes arguments only by value.

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Filed Under: Java

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Q:

What is MultiTasking?

Answer

Executing more than one program simultaniously.(i.e at time)


Ex:


Windows media player  is a program


Internet explorer(IE) is another program executing both the programs  at a time is called multi tasking.

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Subject: Java

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