What are the advantages of LINQ ?

Correct Answer: LINQ stands for " Language Integrated Query " and it is pronounced as "LINK" LINQ was introduced in with NET framework 35 including VS2008 It enables you to query the data from various data source like SQL, XML document, ADO NET data source, web services and any other objects such as Collection, Generics etc

Correct Answer: - Clustering means one than one database server configured for the same user connection When users connect, one of the server?s responds and connects based on availability The user is completely ignorant of the fact that there are more than one database servers It demands high cost due to infrastructure needs Clustering is hence done on server level - Mirroring means, one has many configured databases on the same server Mirrors are basically copies of the original database Mirroring is hence done on database level

Correct Answer: Notify URL and Return URL is used in Paypal Payment Gateway integration Notify URL is used by PayPal to post information about the transaction Return URL is used by the browser; A url where the user needs to be redirected on completion of the payment process

Correct Answer: PHP developed for less script, time saving, Free Open Source Software and runs on different platforms such as Windows, Linux, Unix, etc PHP compatible with almost all servers used today such as Apache, IIS, etc The PHP scripting language resembles JavaScript, Java, and Perl, These languages all share a common ancestor, the C programming language PHP has full access to the information that the server has, and very little access to information that the client has In fact, it only has information that the client tells the server and that the server passes on to PHP Because it is on the server, however, PHP cannot be modified by the client While you cannot necessarily trust the information that the client gives to PHP, you can trust that your PHP is doing what you told it to do Because PHP is on the server end, your PHP scripts can affect your server -- such as by keeping an activity log or updating a database

Correct Answer: The Active Directory database is stored on domain controllers and is accessible by network applications All domains can be domain controllers and keep a copy of the Active Directory database in C:\windows\Ntds\Ntdsdit

Correct Answer: Synchronized

Explanation:

The synchronized keyword indicates that a method can be accessed by only one thread at a time

Correct Answer: 1

Explanation:

Scanf returns number of items successfully read and not 1/0. Here 10 is given as input which should have been scanned successfully. So number of items read is 1.

Correct Answer: You should declared your class as final But you can't define your class as final, if it is an abstract class A class declared as final can't be extended by any other class

Correct Answer: Error-first callbacks are used to pass errors and data as well You have to pass the error as the first parameter, and it has to be checked to see if something went wrong Additional arguments are used to pass data fsreadFile(filePath, function(err, data) { if (err) { // handle the error, the return is important here // so execution stops here return consolelog(err) } // use the data object consolelog(data) })

Correct Answer: A poor Hashcode() function will result in frequent collision in HashMap which eventually increase time for adding an object into Hash Map