Technology Questions

Q:

Which two method you need to implement for key Object in HashMap ?

Answer

In order to use any object as Key in HashMap, it must implements equals and hashcode method in Java.

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Q:

What will happen when introduce the interface of classes in a run-time polymorphic hierarchy?

A) Separation of interface from implementation B) Merging of interface from implementation
C) Separation of interface from debugging D) None of the mentioned
 
Answer & Explanation Answer: A) Separation of interface from implementation

Explanation:
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Filed Under: C++

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Q:

What's the difference between GET() and POST() method?

Answer

We can send 1024 bytes utilizing GET() yet POST() can exchange extensive measure of information and POST is the protected strategy than GET technique .

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Subject: PHP
Job Role: Database Administration

5 6668
Q:

How does cloud architecture overcome the difficulties faced by traditional architecture?

Answer

Cloud architecture provide large pool of dynamic resources that can be accessed any time whenever there is a requirement, which is not being given by the traditional architecture. In traditional architecture it is not possible to dynamically associate a machine with the rising demand of infrastructure and the services. Cloud architecture provides scalable properties to meet the high demand of infrastructure and provide on-demand access to the user.

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Subject: Cloud Computing

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Q:

What is the meaning of VSAM RETURN-CODE 28?

Answer

Out of space condition is raised.

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Q:

What is the code-behind feature in ASP.NET?

Answer

The code-behind feature of ASP.NET enables you to divide an ASP.NET page into two files - one consisting of the presentation data, and the second, which is also called the code-behind file, consisting of all the business logic. The presentation data contains the interface elements, such as HTML controls and Web server controls, and the code-behind contains the event-handling process to handle the events that are fired by these controls. The file that contains the presentation data has the .aspx extension. The code behind file has either the .cs extension (if you are using the programming language C#) or the .vb (if you are using the programming language Visual Basic .NET) extension.

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Subject: .NET

1 6604
Q:

How to read and write a file using javascript?

Answer

Files can be read and written by using java script functions – fopen(),fread() and fwrite().


The function fopen() takes two parameters – 1. Path and 2. Mode (0 for reading and 3 for writing). The fopen() function returns -1, if the file is successfully opened.


Ex: file=fopen(getScriptPath(),0);


 


The function fread() is used for reading the file content.


Ex: str = fread(file,flength(file));


 


The function fwrite() is used to write the contents to the file.


Ex(): file = fopen("c:\MyFile.txt", 3);// opens the file for writing


fwrite(file, str);// str is the content that is to be written into the file.

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Subject: Web Technology

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Q:

What's the difference between Session and Cookie?

Answer

The principle distinction amongst sessions and cookies is that sessions are put away on the server, and cookies are put away on the client's PCs in the content record position. Cookies can not hold various variables,But Session can hold numerous variables.We can set expiry for a cookie,The session just stays dynamic the length of the program is open.Users don't have admittance to the information you put away in Session,Since it is put away in the server. Session is mostly utilized for login/logout reason while cookies utilizing for client movement following.

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Subject: PHP
Job Role: Database Administration

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