Interview Questions

Q:

How to get the contents of an input box using Javascript?

Answer

Use the "value" property.
var myValue = window.document.getElementById("MyTextBox").value;

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Subject: Web Technology

0 2269
Q:

Explain primary key constraint.

Answer

Primary key constraint ensures that the column(s) always has a unique value to identify the record.
Example:
Below, the primary key is created for column id with name prim_id.
create table employee ( id number NOT NULL, Name varchar(200) Constraint prim_id primary key(id) );

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Subject: Oracle

0 2267
Q:

What are the uses of Amazon web services?

Answer

Amazon web services consist of a component called as Amazon S3 that acts as a input as well used as an output data store. It is used in checking the input and according to that gives the output. The input consists of the web that is stored on Amazon S3 as object and it is update frequently to make the changes in the whole architecture. It is required due to the on demand growing of the data set and to provide persistent storage.

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Subject: Cloud Computing

0 2265
Q:

Explain about creating VB applications in excel ?

Answer

User defined functions can be created into the Microsoft spreadsheet. Spreadsheets can be customized according to the user needs by using VB applications. To create visual basic functions useful for spreadsheet you need to click Tools and select Macros where you will need to click on Visual basic editor.

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Q:

Why regression testing is important?

Answer

Regression Testing: When changes in the code of the software are made to fix the previous bug. Then testing needs to be perform to ensure that it will not generate a new bug in the application and it works as specified and that it has not negatively impacted any functionality that it offered previously. Regression Testing is important because of following reason:


 


- That the application works even after the alteration in the code were made.


- The original functionality continues to work as specified even after doing changes in the software application.


- The alteration to the software application has not introduced any new bugs.

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Subject: QA Testing

0 2261
Q:

Which package is imported by default?

Answer java.lang package is imported by default even without a package declaration.
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Subject: Java

0 2261
Q:

What is a MAC Address?

Answer

MAC- Media Access Control .its a unique identifier defined for certain hardware/network adapters

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Q:

Explain the difference between value types and reference types

Answer

Value type :


 



  • Stores the data

  • The value of value types is stored on the managed stack

  • They are lighter objects 

  • One variable can have only one value


Reference Type :



  • Stores the reference to the data

  • A reference type is allocated on the heap

  • They are heavier objects

  • Several variables can reference the same data


 

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Subject: .NET

0 2257