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magdy medhat

What is Domain Name Resolution - 0 views

  • What is Domain Name Resolution Introduction When using the Internet most people connect to web sites, ftp servers or other Internet servers by connecting to a domain name, as in www.bleepingcomputer.com. Internet applications, though, do not communicate via domain names, but rather using IP addresses, such as 192.168.1.1. Therefore when you type a domain name in your program that you wish to connect to, your application must first convert it to an IP address that it will use to connect to. The way these hostnames are resolved to their mapped IP address is called Domain Name Resolution. On almost all operating systems whether they be Apple, Linux, Unix, Netware, or Windows the majority of resolutions from domain names to IP addresses are done through a procedure called DNS.
    • Ahmed Mansour
       
      i think it's great artical !!
    • Islam TeCNo
       
      Yes .....we know that Web sites are on servers that has IP adresses like this 217.143.56.12 for example .....this article tell us how the site name [www.google.com] is converted to the IP thanks Mans
    • magdy medhat
       
      ya tecno ya gamedddddd mesh de elly kona bntklm feha fel microbus :D
  • Hosts File - There is a file called the HOSTS file that you can use to convert domain names to IP addresses. Entries in the HOSTS file override any mappings that would be resolved via a DNS server
    • Islam TeCNo
       
      I think this is what some spam and adware programs use .... you type a normal site Name but you go yo another site ... i think so !!
  • Netbios - This only applies to Windows machines and will only be used to map names to IP addresses if all previous methods failed. This method will attempt to map the netbios name you are trying to connect to with an IP address.
    • Islam TeCNo
       
      any body can explain this point for me ?
  • ...2 more annotations...
  • This can be changed though by changing certain registry keys
    • Islam TeCNo
       
      start -> run -> regedit this will allow you to edit the registry
  • DnsPriority = 30 LocalPriority = 200 HostsPriority = 75 NetbtPriority = 100
    • Islam TeCNo
       
      Or Simpler DnsPriority = 1 HostsPriority = 2 NetbtPriority = 3 LocalPriority = 4
Islam TeCNo

Pirate Party Wins and Enters The European Parliament | TorrentFreak - 0 views

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    OMG .....el mafroud dah ma3nah en ba2a fe el European Parliament nas men el monasren lel Cracks we el Torrent we el P2P ..ana mesh 3aref ezaii dah 7asal !!!!!
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    OMG !!! ....el mafroud dah ma3nah en el nas eli byshag3o el torrents we el P2P file sharing we keda we byshag3o el illegal software download ba2a lehom makan fe el European Parliament ...dah eli fehmto !!
Abdelrahman Ogail

Quis custodiet ipsos custodes? - Wikipedia, the free encyclopedia - 0 views

  • The question is put to Socrates, "Who will guard the guardians?" or, "Who will protect us against the protectors?" Plato's answer to this is that they will guard themselves against themselves. We must tell the guardians a "noble lie."[1] The noble lie will inform them that they are better than those they serve and it is therefore their responsibility to guard and protect those lesser than themselves. We will instill in them a distaste for power or privilege; they will rule because they believe it right, not because they desire it.
Abdelrahman Ogail

ELIZA - Wikipedia, the free encyclopedia - 0 views

  • ELIZA was a computer program and an early example (by modern standards) of primitive natural language processing. ELIZA operated by processing users' responses to scripts, the most famous of which was DOCTOR, a simulation of a Rogerian psychotherapist. In this mode, ELIZA mostly rephrased the user's statements as questions and posed those to the 'patient.' ELIZA was written by Joseph Weizenbaum between 1964 to 1966
Islam TeCNo

Database - Wikipedia, the free encyclopedia - 0 views

shared by Islam TeCNo on 08 Jun 09 - Cached
  • A database is a structured collection of records or data that is stored in a computer system. The structure is achieved by organizing the data according to a database model. The model in most common use today is the relational model. Other models such as the hierarchical model and the network model use a more explicit representation of relationships
    • Abdelrahman Ogail
       
      Database official definition
    • Islam TeCNo
       
      yes .... bas a3taked en el wa7ed yfham ahm b keter men eno ye3ref el Definition (dah mogarad test post hehe )
    • Islam TeCNo
       
      But in File Stucter we took that database is set of related files
  • increase their speed
  • common kind of index is a sorted list of the contents of some particular table column, with pointers to the row associated with the value
  • ...1 more annotation...
  • Typically, indexes are also stored in the various forms of data-structure mentioned above (such as B-trees, hashes, and linked lists)
Abdelrahman Ogail

Voice over Internet Protocol - Wikipedia, the free encyclopedia - 0 views

shared by Abdelrahman Ogail on 01 Jul 09 - Cached
Ahmed One liked it
  • Voice over Internet Protocol (VoIP) is a general term for a family of transmission technologies for delivery of voice communications over IP networks such as the Internet or other packet-switched network
  • Internet telephony refers to communications services—voice, facsimile, and/or voice-messaging applications—that are transported via the Internet, rather than the public switched telephone network (PSTN). The basic steps involved in originating an Internet telephone call are conversion of the analog voice signal to digital format and compression/translation of the signal into Internet protocol (IP) packets for transmission over the Internet; the process is reversed at the receiving end.[1]
Ahmed Mansour

XHTML Frequently Answered Questions - 0 views

shared by Ahmed Mansour on 30 Jun 09 - Cached
Ahmed One liked it
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    i think this is great article to know the differences between html and xhtml ..!
fili el sayed

CodeProject: Introduction to Object Oriented Programming Concepts (OOP) and More. Free ... - 0 views

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    kol deh intro :D .. thanks ya flibiney :d
Islam TeCNo

Scalability - Wikipedia, the free encyclopedia - 0 views

  • In telecommunications and software engineering, scalability is a desirable property of a system, a network, or a process, which indicates its ability to either handle growing amounts of work in a graceful manner, or to be readily enlarged.[1] For example, it can refer to the capability of a system to increase total throughput under an increased load when resources (typically hardware) are added. An analogous meaning is implied when the word is used in a commercial context, where scalability of a company implies that the underlying business model offers the potential for economic growth within the company.
    • Abdelrahman Ogail
       
      In web applications, the client objects are removed from the server when they are sent to the client browser. This is great for scalability, but it can hurt the user and developer experience
    • Islam TeCNo
       
      mesh fahem ya Zikas commentak :D. we men el examples 3ala el scalabilty ...Gooogle we Gmail
    • Abdelrahman Ogail
       
      In Web applications client data are saved on the server (then the server memory is decreased that decreases the scalability - الإستيعاب-) So removing the client data improvers scalability becuase it saves server memory
    • Islam TeCNo
       
      ahaa :D Keshta.... ya3ni by3mlo delete 3ala el server ba3d lama el client ye3mel download :D hehe
Abdelrahman Ogail

Genetic algorithm - Wikipedia, the free encyclopedia - 0 views

  • A genetic algorithm (GA) is a search technique used in computing to find exact or approximate solutions to optimization and search problems. Genetic algorithms are categorized as global search heuristics. Genetic algorithms are a particular class of evolutionary algorithms (EA) that use techniques inspired by evolutionary biology such as inheritance, mutation, selection, and crossover (also called recombination).
  • A typical genetic algorithm requires: a genetic representation of the solution domain, a fitness function to evaluate the solution domain.
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    GE are primary used in Learning in AI
Islam TeCNo

Rich Internet application - Wikipedia, the free encyclopedia - 0 views

  • Rich Internet applications (RIAs) are web applications that have some of the characteristics of desktop applications, typically delivered by way of a proprietary web browser plug-ins or independently via sandboxes or virtual machines[1]. Examples of RIA frameworks include Curl (programming language), Adobe Flash/Adobe Flex/AIR, Java/JavaFX[2], uniPaaS[3] and Microsoft Silverlight[4].
    • Abdelrahman Ogail
       
      RIA Application Definition. Seems to be applications that could be used to Web and Desktop Development as Java
    • Islam TeCNo
       
      (Y) .....ana bardo kont 3ayez a3ref eh RIA deh :D
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    Very clear document :D .....need no explanation :D
Islam TeCNo

LOL - Wikipedia, the free encyclopedia - 0 views

shared by Islam TeCNo on 25 Jun 09 - Cached
  • OL (also written with some or all letters lowercase) is an abbreviation for laughing out loud[1][2] or laugh out loud.[3] LOL is a common element of Internet slang used historically on Usenet, but now widespread in other forms of computer-mediated communication, and even face-to-face communication. It is one of many initialisms for expressing bodily reactions, in particular laughter, as text, including initialisms such as ROTFL[4][5][6][7] or ROFL [8] ("roll(ing) on the floor laughing"), a more emphatic expression of laughter, and BWL ("bursting with laughter"), above which there is "no greater compliment" according to technology columnist Larry Magid.[9] Other unrelated expansions include the now mostly historical "lots of luck" or "lots of love" used in letter-writing.[10
    • Abdelrahman Ogail
       
      Source of the LOL
    • Islam TeCNo
       
      hehe LOL :D
  • Corruptions of "LOL"
    • Abdelrahman Ogail
       
      This is a big LOL
Islam TeCNo

3APL - Wikipedia, the free encyclopedia - 0 views

shared by Islam TeCNo on 24 Jun 09 - Cached
Ahmed One liked it
  • An Abstract Agent Programming Language or Artificial Autonomous Agents Programming Language or 3APL (pronounced triple-A-P-L) is an experimental tool and programming language for the development, implementation and testing of multiple cognitive agents using the Belief-Desire-Intention (BDI) approach. The newest incarnation of 3APL is 2APL (A Practical Agent Programming Language).
    • Abdelrahman Ogail
       
      Anyone get anything about 2APL kindly tell me :D
    • Islam TeCNo
       
      wad7 enha 7aga 7elwa awi !
Islam TeCNo

How to Use the Windiff.exe Utility - 0 views

  • This article describes how to use the Windiff.exe utility, a tool that graphically compares the contents of two ASCII files, or the contents of two folders that contain ASCII files, to verify whether they are the same. The file byte count and the creation date are not reliable indications.
    • Abdelrahman Ogail
       
      This is pretty useful when comparing 2 versions of code you wrote before
    • Islam TeCNo
       
      I think TortoiseSVN come with a tool for comparing files and i expect it will be better :D:D ......Thanks ZiKaS
Islam TeCNo

Ternary relation - Wikipedia, the free encyclopedia - 0 views

  • n mathematics, a ternary relation or triadic relation is a finitary relation in which the number of places in the relation is three. Ternary relations may also be referred to as 3-adic, 3-ary, 3-dimensional, or 3-place. Just as a binary relation is formally defined as a set of pairs, i.e. a subset of the Cartesian product A × B of some sets A and B, so a ternary relation is a set of triples, forming a subset of the Cartesian product A × B × C of three sets A, B and C.
    • Abdelrahman Ogail
       
      Well known relation types is binary relation. Also ternary relation is a basic relation type
    • Islam TeCNo
       
      thanks zikas .... we bardo fe 7aga esmaha Ternary Search zaii ma fe binary search
Islam TeCNo

Elmasri's Home Page - 0 views

shared by Islam TeCNo on 09 Jun 09 - Cached
  • Dr. Elmasri is Professor of Computer Science and Engineering at The University of Texas at Arlington. Dr. Elmasri received his B.S. in Electrical Engineering from Alexandria University, Egypt, in 1972. He completed his M.S. and Ph.D. degrees in Computer Science at Stanford University in 1980
    • Abdelrahman Ogail
       
      An Egyption computer scientst published many papers. Also published Database Systems Fundamentals textbox of database courses at many colleges
    • Islam TeCNo
       
      howa ana bas 3andi comment ....en wade7 fe3lan en kol 3olma2 el computer science kano bydrso 7agat tania el awel zaii maslan el Math we keda we dah tab3an yerga3 l2n el science dah lesa geded
Abdelrahman Ogail

Mutation testing - Wikipedia, the free encyclopedia - 1 views

  • Mutation testing (or Mutation analysis) is a method of software testing, which involves modifying program's source code in small ways.[1] These, so-called mutations, are based on well-defined mutation operators that either mimic typical programming errors (such as using the wrong operator or variable name) or force the creation of valuable tests (such as driving each expression to zero). The purpose is to help the tester develop effective tests or locate weaknesses in the test data used for the program or in sections of the code that are seldom or never accessed during execution.
  • For example, consider the following C++ code fragment: if (a && b) c = 1; else c = 0; The condition mutation operator would replace '&&' with '||' and produce the following mutant: if (a || b) c = 1; else c = 0;
  • Many mutation operators can produce equivalent mutants. For example, consider the following code fragment: int index=0; while (...) { . . .; index++; if (index==10) break; } Boolean relation mutation operator will replace "==" with ">=" and produce the following mutant: int index=0; while (...) { . . .; index++; if (index>=10) break; }
sally pearson

Renewing My Remote Computer Help Subscription - 1 views

My friend recommended ComputerHelpFastOnline - an emerging team of computer savvy tech support professionals - to provide computer help for my business. Thank God I heeded his words because since I...

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samantha armstrong

FixComputerpProblemsSite Surely Knows How to Fix Computer Problems! - 2 views

I was having problems with my laptop before. Good thing FixComputerpProblemsSite helped me fix it. And they are really the experts when it comes to solving any computer related issues. They can eas...

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