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evious technology, while succinctly describing the process by which it works. Read-Only Memory Read-Only Memory ROM is another com puter memory technology that differs significantly from RAM and is often confused with it. RAM is a non-permanent type of memory, whereas ROM is designed to retain data for the long term. The name Random Access Memory is important because it differentiates the se technologies and prevents them from being confused with one another. The two technologies are inherently incomparable, and mist google web fonts aking one for the other while building a computer will cause frustration on the part of the builder, and can even damage the compo nents. Volatility The word Random in Random Access Memory refers to RAMs quality of being completely volatile. Its state is always Bio Limousin Moteur de recherche changing from moment to moment. In fact, when the computer is turned off, the RAM reverts to a blank state, essentially holding n .

RAM functions as a memory pool for the computer, and the words Access Memory reflect this function. While the CPU is handling mil lions of calculations per second, it needs a place to store and retrieve data. While programs are loading and running, they need a repository in which they can store data. It is for this reason the RAMs contents change from moment to moment. As you open new pr ograms, surf the Web or edit images, information is being sent to RAM and retrieved from RAM constantly.1 Highlight the questionab map icon le URL and press the CTRL key and the C key at the same time to copy it. 2 Open a URL scanner, such as AVG Online Scan, Dr. Web or Online Link Scan see Resources. 3 Paste the questionable URL into the provided text box by putting your cursor into the text box Bio Limousin Moteur de recherche and pressing CTRL + V. 4 Click on the Scan button. Some sites will require you to verify that you are not a computer by retyping a .

s are the most common form of computer-based authentication. Users are prompted for a user identifier, email address or user name and a password object that are authenticated against a database or ACL access control list. Once the user is identified, she is gi ven access to certain areas of a system, as stored in an authorization manifest. Websites, wireless networks, single-user machines and email technologies frequently use user names and passwords to authenticate users. Passwords are vulnerable to guessing, brute newsletter templates -force trying every possible password combination and theft attacks. PKI and Smart Cards PKI Public Key Infrastructure provides a cryptographically secure method of authenticating computer users. Users are given two cryptographic keys: a public key and a priva Bio Limousin Moteur de recherche te key, which are used in the authentication process. When a user tries to authenticate to a system, he presents his public key, w .

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