Interview Questions

Q:

What is static initializer block? What is its use?

Answer

A static initializer block is a block of code that declares with the static keyword. It normally contains the block of code that must execute at the time of class loading. The static initializer block will execute only once at the time of loading the class only.

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Subject: Java

0 2220
Q:

How to store the uploaded file to the final location?

Answer

move_uploaded_file( string filename, string destination)

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Subject: PHP

0 2217
Q:

How is final different from finally and finalize()?

Answer final is a modifier which can be applied to a class or a method or a variable. final class can't be inherited, final method can't be overridden and final variable can't be changed.

finally is an exception handling code section which gets executed whether an exception is raised or not by the try block code segment.

finalize() is a method of Object class which will be executed by the JVM just before garbage collecting object to give a final chance for resource releasing activity.
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Subject: Java

0 2217
Q:

What are the main attributes of test automation?

Answer

The main attributes are discussed below:


 


Maintainability: For each new release need to update the test automation suites.


Reliability: Accuracy and repeatability of the test automation.


Flexibility: Ease of working with all the different kinds of automation test ware. 


Efficiency: Total cost related to the effort needed for the automation.


Portability: Ability of the automated test to run on different environments.


Robustness: Effectiveness of automation on an unstable or rapidly changing system. 


Usability: Extent to which automation can be used by different types of user.

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Subject: QA Testing

0 2216
Q:

How to use Amazon SQS?

Answer

Amazon SQS is a message passing mechanism that is used for communication between different connectors that are connected with each other. It also acts as a communicator between various components of Amazon. It keeps all the different functional components together. This functionality helps different components to be loosely coupled, and provide an architecture that is more failure resilient system.

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Subject: Cloud Computing

1 2215
Q:

What is a Node.js?

Answer

Node.js is a framework for web applications built on Google Chrome's JavaScript Engine(V8 Engine).


Node.js is comes with runtime environment on which a cript based on javascript can be interpreted and executed (It is analogus to JVM to JAVA byte code). This runtime environment allows to execute a JavaScript code on any machine outside a browser. Because of this runtime of Node.js, JavaScript is now can be executed on server also.


Node.js is provides a rich library of various javascript modules which eases the developement of web application using Node.js to greater extents.


 

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Subject: Web Technology
Job Role: Software Architect

0 2214
Q:

How to check that whether the file object is pointing a folder or not?

Answer

boolean isDirectory();

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Subject: Java

0 2214
Q:

Which class in .NET is used to install a Windows service?

Answer

The ServiceInstaller class, also known as the project installer class, is used to install a Windows service.

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Subject: .NET

0 2214