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computersciencej

TCP/IP model questions based Study Material for gate Computer Science - 0 views

Computer Science Study Material for Gate

shared by computersciencej on 17 Nov 17 - No Cached
  • computersciencej on 17 Nov 17
     
    TCP/IP protocol based questions for gate computer science exam Q1.What is the difference between transport and session layer of OSI model. Answer: OSI Model Transport Layer The transport layer uses the services provided by the network layer, such as best path selection and logical addressing, to provide end-to-end communication between source and destination. • The transport -layer data stream is a logical connection between the endpoints of a network. • End-to-end control is provided by sliding windows and reliability in sequencing numbers and acknowledgments. The transport layer regulates information flow to ensure end-to-end connectivity between host applications reliably and accurately. • The TCP/ IP protocol of Layer 4 (t transport t layer ) has two protocols. They are TCP and UDP. The transport layer accepts data from the session layer and segments the data for transport across the network. Generally, the transport layer is responsible for making sure that the data is delivered error-free and in the proper sequence. Flow control generally occurs at the transport layer. OSI Model Session Layer The session layer establishes, manages, and terminates communication sessions. Communication sessions consist of service requests and service responses that occur between applications located on different network devices. These requests and responses are coordinated by protocols implemented at the session layer. The session layer establishes, manages, and terminates sessions between applications Functions of the session layer and the different processes that occur as data packets travel through this layer. More specifically, you learned that Communication sessions consist of mini-conversations that occur between applications located on different network devices. Requests and responses are coordinated by protocols implemented at the session layer. • The session layer decides whether to use two-way simultaneous communication or two-way alternate communicati
Janos Haits

Welcome to city.forecasting.ai | The artificial intelligence community - 0 views

city.forecasting.ai/en

community technology science web 3.0 artificial research city forecasting intelligence online Artificial-Intelligence computer development tools

shared by Janos Haits on 28 Sep 17 - No Cached
  • Janos Haits on 28 Sep 17
     
    "The artificial intelligence community"
Abdelrahman Ogail

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

en.wikipedia.org/Voip

VoIP

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]
Islam TeCNo

LOL - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/Lol

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
      Abdelrahman Ogail on 25 Jun 09
       
      Source of the LOL
    • Islam TeCNo
      Islam TeCNo on 25 Jun 09
       
      hehe LOL :D
  • Corruptions of "LOL"
    • Abdelrahman Ogail
      Abdelrahman Ogail on 25 Jun 09
       
      This is a big LOL
Janos Haits

Meta - AI for Science - 0 views

meta.com

meta science facebook computer science research Artificial Intelligence

shared by Janos Haits on 24 Jan 17 - Cached
  • Janos Haits on 24 Jan 17
     
    "Meta is a tool that helps researchers understand what is happening globally in science and shows them where science is headed. Pending shareholder and court approval, the Chan Zuckerberg Initiative is acquiring Meta to help bring its technologies to the entire scientific community. Sign up now to reserve your free account."
Janos Haits

Google Computer Science Education - 0 views

www.google.com/cs

google education CS science computer coding computerscience

shared by Janos Haits on 03 Feb 17 - Cached
  • Janos Haits on 03 Feb 17
     
    "Computer science (CS) education is a pathway to innovation, to creativity and to exciting career opportunities. We believe that all students deserve these opportunities. That is why Google is committed to developing programs, resources, tools and community partnerships which make CS engaging and accessible for all students."
Islam TeCNo

specification - JSON-RPC - Trac - 0 views

json-rpc.org/specification

JSON-RPC protocol communication

shared by Islam TeCNo on 14 Jun 09 - Cached
Ahmed Mansour liked it
  • 3. JSON Class hinting ¶ There are only simple data types defined in JSON. To overcome this problem in a JSON compatible way a special property for objects is introduced. {"__jsonclass__":["constructor", [param1,...]], "prop1": ...} The object is then instantiated using the constructor, passing in the parameters. Once constructed the properties (prop1, ...) will be applied.
    • Islam TeCNo
      Islam TeCNo on 14 Jun 09
       
      JSON-RPC el mafroud feh data type wa7ed bas ....bas ana mesh fahem el 7eta deh awi !!
  • To give the serverside peer a chance to send messages to the client side peer, the client side peer may reopen communication by sending an empty HTTP POST.
    • Islam TeCNo
      Islam TeCNo on 14 Jun 09
       
      mesh fahem el 7eta deh !! eh lazmet el empty post ya3ni !
  • --> {"method": "postMessage", "params": ["Hello all!"], "id": 99} <-- {"result": 1, "error": null, "id": 99} <-- {"method": "handleMessage", "params": ["user1", "we were just talking"], "id": null} <-- {"method": "handleMessage", "params": ["user3", "sorry, gotta go now, ttyl"], "id": null} --> {"method": "postMessage", "params": ["I have a question:"], "id": 101} <-- {"method": "userLeft", "params": ["user3"], "id": null} <-- {"result": 1, "error": null, "id": 101}
  • Islam TeCNo on 14 Jun 09
     
    JSON-RPC is lightweight remote procedure call protocol similar to XML-RPC. It's designed to be simple!
Janos Haits

Numenta | NuPIC - 0 views

numenta.org

machine learning opensource AI machinelearning artificial intelligence computer Artificial-Intelligence tutorials Programming

shared by Janos Haits on 04 Jun 14 - No Cached
  • Janos Haits on 04 Jun 14
     
    Numenta.org Platform for Intelligent Computing The mission of this project is to build and support a community interested in machine learning and machine intelligence based on modeling the neocortex and the principles upon which it works.
Janos Haits

OpenHPI.de/ - 1 views

openhpi.de

education educational computerscience computer_science computer programming platform computer science computers e-learning

shared by Janos Haits on 26 Sep 12 - No Cached
  • Janos Haits on 26 Sep 12
     
    the educational Internet platform of the German Hasso Plattner Institute, Potsdam. Starting in September you will be able to take part in our worldwide social learning network based on interactive online courses covering different subjects in Information and Communications Technology (ICT). Enter a fascinating world of knowledge with our free open online courses. Meet other participants from around the world and familiarize yourself with fundamental and current topics in ICT, computer science and IT systems engineering.
Janos Haits

Gitea - 0 views

gitea.io/en-US

github git server hosting development Computer Technology tools Programming online

shared by Janos Haits on 05 Jul 18 - No Cached
  • Janos Haits on 05 Jul 18
     
    "A painless self-hosted Git service. Gitea is a community managed fork of Gogs, lightweight code hosting solution written in Go and published under the MIT license."
Janos Haits

Steem.io - 0 views

steem.io

privacy anonymous project p2p security tool online web2.0 tools hosting decentralised web protocol hypermedia network service maker Computer development science Technology blockchain bitcoin platform anonymity

shared by Janos Haits on 03 Oct 18 - No Cached
  • Janos Haits on 03 Oct 18
     
    "Steem powers Smart Media Tokens Steem is a blockchain-based rewards platform for publishers to monetize content and grow community."
Janos Haits

Has my email been hacked? - Lista de sitios comprometidos - 0 views

hacked-emails.com/verified_leaks

email dataleaks leaks websecurity emails online computer technology web tools

shared by Janos Haits on 12 Oct 17 - No Cached
  • Janos Haits on 12 Oct 17
     
    "Top verified data leaks Here we highlight some of largest-volume data leaks in our database and which have already been verified by the attacked site itself or by its community. Each of them has been made publicly available by the attackers themselves or by those affected through different websites. All this information can also be followed by RSS and Twitter."
Janos Haits

A Million Dollar Request for Social Networks | Blockstack - 0 views

www.requestforsocialnetworks.com

social networks networks web2.0 Social Media Social media collaboration tools business online software million poll response development technology Science Programming

shared by Janos Haits on 13 May 18 - No Cached
  • Janos Haits on 13 May 18
     
    "It's time for a new breed of social networks - where power is taken back from a single authority and control is returned to you, to me, to all of us. It's time to decentralize social networks.  This is a movement toward greater personal freedom, but it takes an empowered community to build this future."
Janos Haits

TensorFlow -- an Open Source Software Library for Machine Intelligence - 0 views

www.tensorflow.org

machine learning tensorflow machinelearning machine-learning tools service ai opensource artificial intelligence Programming development Artificial-Intelligence computer online web GOOGLE

shared by Janos Haits on 08 May 17 - No Cached
  • Janos Haits on 08 May 17
     
    "TensorFlow™ is an open source software library for numerical computation using data flow graphs. Nodes in the graph represent mathematical operations, while the graph edges represent the multidimensional data arrays (tensors) communicated between them. The flexible architecture allows you to deploy computation to one or more CPUs or GPUs in a desktop, server, or mobile device with a single API. TensorFlow was originally devel"
Janos Haits

Global Privacy Control - Take Control Of Your Privacy - 0 views

globalprivacycontrol.org

web browse internet tools Computer online technology development science service privacy data control

shared by Janos Haits on 07 Jan 21 - No Cached
  • Janos Haits on 07 Jan 21
     
    "Turn On GPC. Enable Global Privacy Control to communicate your privacy preferences. Send the Signal. Your browser will send the GPC signal to websites you visit. Exercise Your Rights. Participating websites that adopt this mechanism can then respect your privacy rights accordingly."
Janos Haits

OAS - 0 views

open.semanticscholar.org

technology semantic web evolution search web3.0 Semantic Web search engine web 3.0 reference research searchengine

shared by Janos Haits on 11 Aug 20 - No Cached
  • Janos Haits on 11 Aug 20
     
    "Advance scientific research. Promote technology. For the good of all humanity. Open Academic Search (OAS) is a working group aiming to advance scientific research and discovery, promote technology that assists the scientific and academic communities, and make research available worldwide for the good of all humanity."
Janos Haits

I2P Anonymous Network - 0 views

geti2p.net/en

tor privacy encryption network security web Internet anonymous anonymity net online service hosting tool maker web2.0 software collaboration technology Tools PC

shared by Janos Haits on 27 Aug 22 - No Cached
  • Janos Haits on 27 Aug 22
     
    I2P is an anonymous overlay network - a network within a network. It is intended to protect communication from dragnet surveillance and monitoring by third parties such as ISPs.
magdy medhat

What is Domain Name Resolution - 0 views

www.bleepingcomputer.com/...tutorial52.html

shared by magdy medhat on 08 Jun 09 - Cached
Islam TeCNo liked it
  • 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
      Ahmed Mansour on 08 Jun 09
       
      i think it's great artical !!
    • Islam TeCNo
      Islam TeCNo on 08 Jun 09
       
      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
      magdy medhat on 08 Jun 09
       
      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
      Islam TeCNo on 08 Jun 09
       
      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
      Islam TeCNo on 08 Jun 09
       
      any body can explain this point for me ?
  • ...2 more annotations...
  • This can be changed though by changing certain registry keys
    • Islam TeCNo
      Islam TeCNo on 08 Jun 09
       
      start -> run -> regedit this will allow you to edit the registry
  • DnsPriority = 30 LocalPriority = 200 HostsPriority = 75 NetbtPriority = 100
    • Islam TeCNo
      Islam TeCNo on 08 Jun 09
       
      Or Simpler DnsPriority = 1 HostsPriority = 2 NetbtPriority = 3 LocalPriority = 4
Islam TeCNo

Model-view-controller - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...2%80%93view%E2%80%93controller

shared by Islam TeCNo on 09 Jun 09 - Cached
  • Model–view–controller (MVC) is an architectural pattern used in software engineering. Successful use of the pattern isolates business logic from user interface considerations, resulting in an application where it is easier to modify either the visual appearance of the application or the underlying business rules without affecting the other. In MVC, the model represents the information (the data) of the application; the view corresponds to elements of the user interface such as text, checkbox items, and so forth; and the controller manages the communication of data and the business rules used to manipulate the data to and from the model.
    • Abdelrahman Ogail
      Abdelrahman Ogail on 09 Jun 09
       
      MVC one of the important patterns used at any software. Especially in Web Development, Database Systems and sure in Game Development
    • Islam TeCNo
      Islam TeCNo on 09 Jun 09
       
      please ya zikas 7ot more comments l eni mesh fahem awi ...ana eli fahmo eni afsl el GUI 3an el core code
  • MVC is often seen in web applications, where the view is the actual HTML or XHTML page, and the controller is the code that gathers dynamic data and generates the content within the HTML or XHTML. Finally, the model is represented by the actual content, which is often stored in a database or in XML nodes, and the business rules that transform that content based on user actions.
    • Islam TeCNo
      Islam TeCNo on 09 Jun 09
       
      i think this is like PHP or ASP page .... you just See HTML (view) that is Generated by PHP/ASP Code (controller) that gather data from Database (content)
Janos Haits

Ohloh, the open source network - 1 views

www.ohloh.net

opensource directory software community reference development search engine searchengine engine tools metasearch search computer Programming PC support

shared by Janos Haits on 19 Sep 13 - Cached
  • Janos Haits on 19 Sep 13
     
    Discover, Track and Compare Open Source
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