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 Technology Questions

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Q:

How do you create a new object in JavaScript?

Answer

var obj = new Object(); or var obj = {};

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Subject: Web Technology

0 1905
Q:

What are the steps involved in uploading the files using FTP client software?

Answer

- FTP is used to upload the files on the server from the client side where it is installed on the computer of clients. 


- FTP client is checked for the installation of the software and according to that the appropriate directory is uploaded on the hosting server. 


- The hosting server uploads the files that is being created by the user and set the permissions for it so that public can access it. 


- Web hosting uses different directories like HTML that is used as var/www/html that is determined using the FTP client. 


- Initial local directory is being set up using FTP client and it is where the website gets stored. 


- The transfer mode is being determined for the files that need to be transferred either in ASCII or BINARY mode.

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Subject: Web Technology

0 1905
Q:

What is the difference between creating a thread by extending Thread class and by implementing Runnable interface? Which one should prefer?

Answer

When creating a thread by extending the Thread class, it is not mandatory to override the run method (If we are not overriding the run method , it is useless), because Thread class have already given a default implementation for run method. But if we are implementing Runnable , it is mandatory to override the run method. The preferred way to create a thread is by implementing Runnable interface, because it give loose coupling.

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Subject: Java

0 1905
Q:

How does a try statement determine which catch clause should be used to handle an exception?

Answer

When an exception is thrown , the catch block of the try statement are examined in the order in which they appear. The first catch block that is capable of handling the exception is executed. The remaining catch blocks are ignored

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Subject: Java

0 1903
Q:

What is the relationship between SOA and cloud architecture?

Answer

Service oriented architecture (SOA) is an architectural style that supports service oriented methodology that is being added in the cloud architecture as a mandatory component. Cloud architecture support the use of on-demand access to resources and it provides lots of other facilities that are being found in SOA as well. SOA makes these requirements optional to use. But, to get the full functionality and more performance based efficiency there is a requirement for the mixture of SOA and cloud architecture.

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Subject: Cloud Computing

0 1902
Q:

What is the difference between array and ArrayList ?

Answer

Array is collection of same data type. Array size is fixed, It cannot be expanded.


 


But ArrayList is a growable collection of objects.ArrayList is a part of Collections Framework and can work with only objects.

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Subject: Java

0 1902
Q:

How would you automatically transfer your visitors to a new web page?

Answer

- You can do it with the help of meta tag mentioned below: 


<META HTTP-EQUIV="Refresh" CONTENT="2"; URL="https://www.yoursite.com"> 


- Place this tag between <HEAD></HEAD> . 


- It will load yousite.com in 2 seconds.

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Subject: Application Development

0 1900
Q:

What is the Dictionary class?

Answer

- The Dictionary class is an abstract class.


- Classes like Hashtable which map keys to values inherit from this class. 


- An object can be looked for if a dictionary and a key is provided.


- Any non-null object can be used as a key and as a value.

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Subject: Java

1 1900