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إعلانات المواقع والشركات والبيع والشراء وإشهار المواقع والهيئات لعروض الخدمات للشركات والأفراد والمؤسسات والهيئات

 
قديم 03-11-2020, 04:46 PM   المشاركة رقم: 1
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المنتدى : إعلانات المواقع والشركات والبيع والشراء وإشهار المواقع والهيئات
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Internet



The web, often known as simply "the Net," is an international method of computer networks -- a system of networks where owners at any one computer could, in case they've permission, obtain info from every other computer (and occasionally chat straight to owners at some other computers). It was conceived by the Advanced Research Projects Agency (ARPA) of the U.S. government in 1969 and was first referred to as the ARPANet. The initial goal was creating a system which would permit users of a research system at one faculty to "talk to" study computers at some other universities. A side gain of ARPANet's design was that, because emails are routed or maybe rerouted in several direction, the system might always run even when portions serotonin had been eliminated in the function associated with a military attack or any other catastrophe.



Today, the web is a public, self-sustaining and cooperative facility accessible to a huge selection of millions of men and women anywhere.



The way the Internet works physically, the web utilizes a percentage of the entire sources of the presently present public telecommunication networks. Technically, what distinguishes the web is the use of its of a pair of protocols named Transmission Control Protocol/Internet Protocol (TCP/IP). 2 latest adaptations of Internet technology, the extranet and the intranet, definitely use the TCP/IP process.



The web could be viewed as having 2 main components: network protocols as well as hardware. The protocols, like the TCP/IP suite, current sets of rules which products should follow to accomplish tasks. Without this typical collection of rules, devices wouldn't have the ability to communicate.



The protocols are in charge of converting the alphabetic copy of a message into electric signals which could be transmitted on the internet, then back once again into legible, alphabetic text.



Hardware, the next main element of the Internet, has everything out of the pc or maybe smartphone that's utilized to use the Internet on the wires which take info from printer to yet another. Extra varieties of hardware include satellites, servers, routers, cell phone towers as well as radios.



These numerous kinds of hardware would be the connections within the system. Devices like computers, smartphones as well as laptops are clients, or end points, even though the machines that store the info would be the servers. The transmission lines which exchange the information may be either wireless indicators from satellites or maybe 4G and mobile phone towers, such as cables, or physical lines as well as fiber optics.



The procedure for transferring info from the moment device to another depends on packet switching. Each laptop attached to the Internet is given a distinctive IP address which enables the unit to be recognized. When one device tries to send out a message to the next device, the information is sent on the internet in the type of manageable packets. Each packet is given a port number which is going to connect it to the endpoint of its.



A package which has both a distinctive IP address as well as port number could be interpreted from alphabetic copy into electric signals by travelling through the levels of the OSI model from the best program level on the bottom actual physical level. The note will likely then be delivered on the internet in which it's obtained by the Internet service provider's (ISP) wireless router. The router is going to examine the spot address assigned to each package and find out where you can post it.



Ultimately, the package gets to the customer and also journeys in reverse from the bottom bodily level of the OSI model on the best program level. Throughout this procedure, the routing information -- the port quantity as well as IP address -- is removed out of the package, therefore permitting the information being converted back again into alphabetic text and finishing the transmission operation.



A brief reason of the way the Internet works:






Applications of the Internet Generally speaking, the Internet is usually utilized to speak throughout small or large distances, share info from any school in the planet as well as access info or maybe information to nearly every issue of moments.



Some certain instances of the way the Internet is used include:



Other types and e-mail of interaction, these kinds of Internet Relay Chat (IRC), instant messaging, Internet telephony, interpersonal media; and video conferencing
self improvement and training via a chance to access online degree programs, workshops and programs and looking for work -- both employer & applicant work with the web to publish positions that are available, apply for work and recruit people found on networking websites that are social as LinkedIn.
Some other instances include:



Internet discussion groups and forums
Online dating
Internet gaming
Research
Reading electric magazines and newspapers
Online shopping
Distinction between the World Wide Web and also the Internet The primary key distinction between Online and also the World Wide Web (WWW or maybe the Web) would be that the Internet is an international link of networks as the Web is a set of info which may be seen making use of the Internet. Put simply, the web is the Web and also the infrastructure is a program on top.



The net is essentially the most popular a part of the Internet. The exceptional feature of its is hypertext, a technique of instant cross-referencing. In many Sites, certain phrases or words show up on text of an alternative color compared to the rest; usually this text can also be underlined. If a person selects one of those words or maybe phrases, they'll be transferred to the associated website or web page. Buttons, images, or maybe portions of images can also be used as hyperlinks.



The Web provides a chance to access vast amounts of pages of info. Web browsing is accomplished by way of an internet browser, the most well-known of that are Google Chrome, Firefox as well as Internet Explorer. The look of a specific Site may vary slightly based on the browser used. Later on and more updated versions of a specific internet browser are competent to make much more complicated characteristics, like animation, virtual reality, audio & music files.



Protection and also the Internet A lot of info, both public and private, is collected throughout the Internet, opening owners around the danger of other security and data breaches threats. Crackers and hackers are able to break into systems and networks and steal information including login information or maybe bank and charge card account records. Several steps which can be taken to protect online secrecy include:



Installing antivirus and also antimalware Creating hard, varied passwords which are not possible to guess.
With a virtual private network (VPN) or perhaps, at minimum, a private browsing mode, like Google Chrome's Incognito window.
Just using HTTPS Making all social networking accounts private.
Deactivating autofill.
Turning off of the unit's GPS.
Updating cookies to ensure a notification is sent whenever a cookie is fitted.
Logging out of profiles rather than simply closing the tab or perhaps window.
Using extreme care with spam emails and don't opening or even downloading articles from unknown sources.
Using care when accessing public Wi Fi or hotspots.
Furthermore, there's a part of the web named the dark web. The deep web is hidden and also inaccessible via regular browsers. Rather, it uses the I2P and Tor browsers which enable users to remain completely anonymous. While this particular anonymity are an excellent approach to safeguard an internet user's free speech and safety measures or even for the authorities to maintain classified information hidden, the deep web additionally generates a world which helps with cybercrime, the transfer of unlawful products as well as terrorism.



Social impact of the Internet The interpersonal impact of the Internet may be viewed as each negative and positive. On one side, folks argue that the web has improved the danger of isolation, withdrawal and alienation from society, aiming to increases in a psychological response known as FOMO, or maybe the anxiety about missing out. On the opposite side, folks think the web to have had the complete opposite impact on society, arguing the Internet increases civic engagement, sociability and also the intensity of interactions.



Whether or not the impacts are bad or good, the web has transformed the way society interacts and also connects. An example of change will be the increased focus on a decline and individual development in a community which is driven by work, room and family. Individuals now are constructing community relationships based on specific interests, values and tasks. Towns are now being created by similar people not merely traditional & in person, but through the multitude and the Internet of internet locations that it makes and also provides. Social media websites -- including Linkedin and Facebook -- have grown to be the ideal platforms for both individuals and business organizations looking to perform all sorts of activities and communicate with other people.



The positives of the Internet



The positives of the Internet include:



Access to endless info, education and knowledge.
A heightened capacity to communicate, connect as well as share.
The capacity to work at home, collaborate and access a worldwide workforce.
The chance to sell as well as make money as a business enterprise or individual.
Access to a limitless supply of entertainment resources, like films, music, games as well as movies.
The capability to amplify the effect of a message, enabling other organizations and charities to attain a wider audience and boost the entire amount of donations.
A chance to access the web of things (IoT), allowing household appliances as well as products to link as well as be managed out of a pc or even smartphone.
The capacity to save data and quickly share documents with cloud storage.
The capacity to monitor as well as control private accounts instantly, like bank accounts or maybe charge card bills.
Reputation of the Internet The ARPANet, the predecessor of the Internet, was first deployed in 1969. In 1983, the ARPANet transitioned into utilizing the TCP/IP receptive network protocol suite and in 1985, the National Science Foundation Network (NSFN) created the system to connect faculty computer science departments across the nation.



Margaret Rouse asks:



What would you most utilize the web for?
Join the Discussion Communications on the internet significantly enhanced in 1989 as soon as hypertext transfer protocol (HTTP) was made, giving various computer platforms the capability to hook up to identical Internet websites. In 1993, the Mosaic Internet browser was developed.



The web has continued to grow as well as evolve through the years of the existence of its. IPv6, for instance, was intended to anticipate enormous potential expansion in the amount of free IP addresses. In an associated development, the IoT is the burgeoning environment where nearly every object or entity may be supplied with a distinctive identified (The capability and uid) to transmit information instantly on the internet.


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يبدأ التدريب على الصيانة والهاردوير في المواعيد التالية :

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محتويات كورسات الصيانة والهاردوير بالمصرية للهندسة والتكنولوجيا egy4tec:

http://www.egy4tec.com/center/lesson-1239-1.html











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