Technology Questions

Q:

What is the impact of declaring a method as final?

Answer A method declared as final can't be overridden. A sub-class can't have the same method signature with a different implementation.
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Subject: Java

1 3242
Q:

What is anonymous FTP and why would you use it

Answer

Anonymous FTP enables users to connect to a host without using a valid login and password. Usually, anonymous FTP uses a login called anonymous or guest, with the password usually requesting the user's ID for tracking purposes only. Anonymous FTP is used to enable a large number of users to access files on the host without having to go to the trouble of setting up logins for them all. Anonymous FTP systems usually have strict controls over the areas an anonymous user can access

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Q:

What is the fastest type of JDBC driver ?

Answer

Type 4  (JDBC Net pure Java Driver) is the fastest JDBC driver.  Type 1 and Type 3 drivers will be slower than Type 2 drivers (the database calls are make at least three translations versus two), and Type 4 drivers are the fastest (only one translation).

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Subject: Java

1 3235
Q:

What is Windows Server Backup?

Answer

Windows Server Backup is a feature released for the Windows 2008 that provides a number of solutions on backing up the data on your computer in case of a system failure or any other issue. Windows Server Backup can backup a few files to a whole server. The server backup is accessible through command lines and a management console

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Q:

What Is a Session in PHP?

Answer

A PHP Session persist the user information to be used later. For example, user name, password, shopping item details. The session is temporary and will be removed soon after the user has left the web site. The session can be persisted for long term usage on databases like MySQL. Each session is identified by a unique Id number for every visitor. The first step to use PHP session is to start the session. The starting session must precede the operations like HTML or the other.


The statement session_start() starts the PHP session and registers the user’s information on the server.

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Subject: PHP

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Q:

What are the rules to use the ROWGUIDCOL property to define a globally unique identifier column?

Answer

Only one column can exist per table that is attached with ROWGUIDCOL property. One can then use $ROWGUID instead of column name in select list.

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Subject: SQL

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Q:

What are the features of C++ different from C?

Answer

All the features of C are similiar to C++ except some features, such as polymorphism, operator overloading which are supported in C++ but not in C language.

Both C and C++ language is similiar in their functionality but C++ provides with more tools and options.

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Subject: C++

0 3221
Q:

What is the purpose of UIWindow object?

Answer

The presentation of one or more views on a screen is coordinated by UIWindow object..

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Subject: IOS

7 3218