Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Net neutrality wikipedia , lookup
Computer security wikipedia , lookup
Deep packet inspection wikipedia , lookup
Recursive InterNetwork Architecture (RINA) wikipedia , lookup
Network tap wikipedia , lookup
Zero-configuration networking wikipedia , lookup
Net neutrality law wikipedia , lookup
Computer network wikipedia , lookup
Cracking of wireless networks wikipedia , lookup
Network : Group of two or more computer systems linked together ,it allows computers and their users to share information and resources . What are advantage of network ? 1. Participation equipment such as printers and other expensive equipment that do not use all the time and therefore does not need a computer to each individual owning a printer connected to it. 2. Participation of files and programs (word processing), which need to subscribe to it with others instead of exchanging files through external storage. 3. Improve the safety of access to the files (data) using password. Types of network : 1.Local area network(LAN) In this type of network computer and other communication devices are in small area and connected together .the area can be single building. such as laboratory. 2. metropolitan area network (MAN) : A metropolitan area network basically bigger version than Lan .it might cover a group of nearly corporate offices . 3.wide area network (WAN) : Computers can further apart like covering cities and countries .the computers are connected by telephone lines or radio waves or optical fibers. Network topologies : Topology : Refers to the shape of a network ,how different nodes in the network are connected to each other and how they common there are for most common network topology : 1.Bus topology : All devices are connected to a central cable called the bus . 2.Star topology : All devices are connected to a central hub. Nodes communicate across the network by passing data through the hub. 3.Ring topology : All devices are connected to one another in the shape of a closed loop so that each devices is connected to two other device. 4.Mesh topology : Devices are connected with many redundant interconnections between network nodes. In a true mesh topology every node at other node in the network . Internet : Is a collection of computers associated with each other around the world through an extensive network of computers share the resources .the Internet network type WAN and is also dependent on the protocol (TCP/IP) for the exchange of process information quickly. www : Is a set of rules and programs, tools and instruction on the Internet. It is an acronym for the word (world wide web). ISP : Is equipped with Internet service to customers which is a company that provides Internet service such as the MSN, a company acronym for the word internet service provider. URL : The Internet address , which determines the place of any information on the World Wide Web. It is an acronym for the word (Uniform Resource Locater) Example: www.aca/myas/file.com Google : Is a program that helps the user to quickly search for any information on the Internet .it is one of the search engines. Web Browser Is a web browser to browse the information on the Internet, such as Netscape , internet explorer. how can we access the internet ? 1.delicate access. 2.dial- up access. what are the internet services ? 1. 2. 3. 4. 5. 6. 7. E-mail Use net Browsing Transform information Electronic learning Online shopping Search for information 8. Electronic payment 9. Chat 10. E –conference What is the different between Internet and Intranet ? Internet: is a global network connecting separate computers and networks with each other in order to exchange information, meaning it is a network of networks Intranet: an internal network is used in large enterprises, are using internet technology to show information ,look and act completely such as internet and enables you to share information between the company's resources staff, where the company's employees are only authorized access to the Internet. What are the ways to seach th web ? 1. Search engine : Its program to search for information on the Web program and maintains catalogs(index) from within it on the Internet in a private database of web pages allowing you to find anything you're looking for. 2. Web Directories Is another way to search for information in internet, its an online Web has the hyperlinks Organization and tidy links are usually regulated by other sub-topics and lead to the sources of information and example is yahoo.