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Q:

Describe the situations in which AJAX should not be used.

Answer

You should not use AJAX if:



             =>  You want the page to show in a search engine, such as Google, because WebCrawler does not execute JavaScript code.

             =>  The browser does not support JavaScript.

             =>  You want to create a secure application.

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Subject: .NET

Q:

What technologies are being used in AJAX?

Answer

AJAX uses four technologies, which are as follows:




       => JavaScript

       => XMLHttpRequest

       => Document Object Model (DOM)

       => Extensible HTML (XHTML) and Cascading Style Sheets (CSS)

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Subject: .NET

Q:

What is difference between MyISAM and InnoDB storage engines in mysql.

Answer

1 : InnoDB provides us row level locking while MyISAM provides us table level locking.

2 : InnoDB offers foreign key constraints wheres in MyISAM does not have foreign key constraints.

3 : InnoDB does not have full text search wheres MyISAM provides us full text search.

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Subject: PHP

Q:

How can we know the number of days between two given dates using php?

Answer

<?php
$tomorrow = mktime(0, 0, 0, date("m") , date("d")+1, date("Y"));
$lastmonth = mktime(0, 0, 0, date("m")-1, date("d"), date("Y"));
echo ($tomorrow-$lastmonth)/86400;
?>

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Subject: PHP

Q:

Which of the following is not considered a JavaScript operator?

A) new B) this
C) delete D) typeof
 
Answer & Explanation Answer: B) this

Explanation:
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Filed Under: Web Technology

Q:

How many parameters are present in mismatch method in non-sequence modifying
algorithm?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: D) 4

Explanation:

There are four parameters. They are first1, last1, first2, predicate.

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Filed Under: C++

Q:

What will happen when an exception is not processed?

A) It will eat up lot of memory and program size B) Terminate the program
C) Crash the compiler D) None of the mentioned
 
Answer & Explanation Answer: A) It will eat up lot of memory and program size

Explanation:

As in the case of not using an exception, it will remain useless in the program and increase the code complexity.

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Filed Under: C++

Q:

In which of the following we cannot overload the function?

A) return function B) caller
C) called function D) none of the mentioned
 
Answer & Explanation Answer: A) return function

Explanation:

While overloading the return function, it will rise a error, So we can’t overload the return function.

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Filed Under: C++