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Archive for the ‘What Is’ Category

What is SELinux?

Posted by admin On January - 15 - 2010

Security-enhanced Linux (SELinux) is an implementation of a mandatory access control mechanism. This mechanism is in the Linux kernel, checking for allowed operations after standard Linux discretionary access controls are checked.

To understand the benefit of mandatory access control (MAC) over traditional discretionary access control (DAC), you need to first understand the limitations of DAC.
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What is Oracle?

Posted by admin On January - 13 - 2010

I guess the first question is really, “What is a database”? A database is an organized collection of data. The data can be textual, like order or inventory data, or it can be pictures, programs or anything else that can be stored on a computer in binary form.

A relational database stores the data in the form of tables and columns. A table is the category of data, like Employee, and the columns are information about the category, like name or address.
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What is LDAP?

Posted by admin On November - 20 - 2009

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LDAP, Lightweight Directory Access Protocol, a directory service internet protocol runs over Transmission Control Protocol/Internet Protocol (TCP/IP) that that email and other programs use to look up information from a server.

Every email program has a personal address book, but how do you look up an address for someone who’s never sent you email? How can an organization keep one centralized up-to-date phone book that everybody has access to?
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What is a zombie process?

Posted by admin On October - 4 - 2009

zombieZombie process is a process observed in Unix/Linux operating system. Zombie process are those process which has finished execution but still have an entry in the process table. This entry for the zombie process is used by the parent to know about the exit status of its child .
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What Is A Gravatar And How To Setup Gravatar Account

Posted by admin On June - 24 - 2009

gravatarIn times one was afraid of giving his/her e-mail address on some blogs , forums ,and sites as he was afraid of spamming.

Tom Werner discovered the solution and what is known as gravatar. So what is a gravatar???

Gravatar short  for GLOBALLY RECOGNIZED AVATAR is a service for providing globally-unique avatars. Gravatar, users can register an account based on their email address, and upload an avatar to be associated with the account.

To eliminate spam, e-mail addresses in gravatar are hashed with the Md5 cryptographic hash function.

Setting up an gravatar account: Read the rest of this entry »

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About Me

Hello everyone, My name is Jaskiran Singh and I am currently pursuing B. Tech final year from Maharaja Agrasen Institute of technology.I am currently RHCT,RHCE,RHCSS certified.

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