What is the term for the transmission of messages and files via a computer network?
Presentation on theme: "E-mail and Internet Explorer. The transmission of messages and files via a computer network Messages can consist of simple text or can contain attachments,"— Presentation transcript: 1 E-mail and Internet Explorer Show
2 The transmission of messages and files via a computer network Messages can
consist of simple text or can contain attachments, such as documents, graphics, or audio/video clips Internet access providers usually provide an e-mail program Some Web sites—such as MSN Hotmail and Yahoo!—provide free e-mail services 3 The e-mail address is a combination of user name
domain name 4 How an e-mail message travels POP 3 server outgoing mail server Internet routers incoming mail server
5 E-mail clients are programs that allow you to send and receive e-mails. Different ways to display your email ▪ As part of a web site ▪ App on a smart phone ▪ Stand alone application.
6 The World Wide Web, or simply Web, consists of a worldwide collection of electronic documents, Web pages, organized into Web sites It is made up of three main parts. Backbone Internet Cloud ClientServer
7 The Internet Protocol Address or IP Address Known as the dotted quad xxx.xxx.xxx.xxx Number that uniquely identifies each computer or device connected to
Internet Domain Name is the text version of IP Address www.amazon.com = 207.171.166.252 8 The Universal Resource Locator (URL) - Unique address for a web page located on a specific web server
9 http://twitter.com/jobs/index.html protocol Twitter server Jobs http://twitter.com/jobs 10 Web pages consist of three components;
Text Multimedia ▪Graphics ▪Audio ▪Video Hyperlinks 11 Text or graphics that connect (link) to other web pages. Three types of links Items found elsewhere on the same page Different web pages in the same site. Other web sites. Hyperlinks can be text or graphics
12 Web Browser Software Interprets HTML, displays Web pages and enables you to link to other Web pages and Web sites The most popular browsers are; Internet Explorer 9 FireFox
Google Chrome 13 Web browser software have sub-systems that can help increase your efficiency when working on the internet, they include; History Bookmarks or favorites Tabs
14 The process of transferring information for a server to a client www.amazon.com
15 Downloading information can be effected by a number of variables; Type of Internet connection ISP Time of day and day of week Amount of information to be downloaded.
16 A Web site that offers a variety of services from one, convenient location, usually for free
17 Contains newsworthy material Stories and articles relating to current events, life, money, sports, and weather News Archives 18 Contains factual information Created by organizations and government agencies Make sure that the web site is legitimate 19 Contains content that describes a cause, opinion,
or idea 20 Contains content that promotes products Allows you to purchase products or services online Allows companies to purchase goods and service from other companies
21 Offers avenues for formal and informal teaching and learning Colleges offer online classes and degrees Some companies offer online training for employees
22 Offers an interactive environment featuring music, video, sports, games, and more
23 Web page maintained by private individual Reasons: sharing life experience with the world or job hunting
24 Search sites are used to find information on the World Wide Web. They include Google Yahoo Bing Two ways to search Basic Advanced What is Networking and Communication? Data communications refers to the transmission of this digital data between two or more computers and a computer network or data network is a telecommunications network that allows computers to exchange data. The physical connection between networked computing devices is established
using either cable media or wireless media. The best-known computer network is the Internet. What are the types of Computer Networks? In computer networks, the data is passed in the form of packets. The devices that transmit or receive this data, such as a phone or a computer, are referred to as nodes. There are three main types of networks: 1. Local Area Network (LAN): It is
usually a small network that is restricted to a small geographic area. A computer network available only to the residents of a building can be called a LAN. 2. Wide Area Network (WAN): As the name implies, these networks cover a broad range of geographic area. WANs are used to connect LANs and other types of networks together so that users and computers can communicate with computers in other regions. An example of a WAN is the much-used and loved, Internet. 3. Metropolitan Area
Network (MAN): MAN is a network that connects the users with computer resources in a geographic area that is larger than LAN but not quite as large as WAN. What are the basic components of Computer Networks? 1.Servers - Servers are computers that hold shared files, programs, and the network operating system. Servers provide access to network resources to all the users of the network. There are many different kinds of servers, and one server can provide several
functions. For example, there are file servers, print servers, mail servers, communication servers, database servers, print servers, fax servers and web servers, to name a few. 2.Clients - Clients are computers that access and use the network and shared network resources. Client computers are basically the customers(users) of the network, as they request and receive services from the servers. 3.Transmission Media - Transmission media are the facilities used to
interconnect computers in a network, such as twisted-pair wire, coaxial cable, and optical fiber cable. Transmission media are sometimes called channels, links or lines. 4.Shared data - Shared data are data that file servers provide to clients such as data files, printer access programs and e-mail. 5.Shared printers and other peripherals - Shared printers and peripherals are hardware resources provided to the users of the network by servers. Resources provided include
data files, printers, software, or any other items used by clients on the network. 6.Network Interface Card - Each computer in a network has a special expansion card called a network interface card (NIC). The NIC prepares(formats) and sends data, receives data, and controls data flow between the computer and the network. On the transmit side, the NIC passes frames of data on to the physical layer, which transmits the data to the physical link. On the receiver's side, the NIC processes bits received from the physical layer and processes the message based on its contents. 7.Local Operating System - A local operating system allows personal computers to access files, print to a local printer, and have and use one or more disk and CD drives that are located on the computer. 8.Network Operating System - The network operating system is a program that runs on computers and servers, and allows the computers to communicate over the network. 9.Hub - Hub is a device that splits a network connection into multiple computers. It is like a distribution center. When a computer request information from a network or a specific computer, it sends the request to the hub through a cable. The hub will receive the request and transmit it to the entire network. Each computer in the network should then figure out whether the broadcast data is for them or not. 10.Switch - Switch is a telecommunication device grouped as one of computer network components. It uses physical device addresses in each incoming messages so that it can deliver the message to the right destination or port. Useful Links: 1-Wikiversity 2-Webopedia 3-Wikipedia Questions: 1-What is the difference between switch and hub? 2-How Is it possible to change the computer’s IP address using some software ? 3- Can we change from one of computer network type to another? Networking and Communicatio(Reviewed Version)What is Networking and Communication? Data communication refers to the transmission of the digital data between two or more computers The physical connection between networked computing devices is established using either cable media or wireless media. The best-known computer network is the Internet. What are the types of Computer Networks? In computer networks, the data is passed in the form of packets . Everything you do on the Internet involves packets. For example, every Web page that you receive comes as a series of packets, and every e-mail you send leaves as a series of packets. The devices that transmit or receive this data, such as a phone or a computer, are referred to as nodes. There are three main types of networks: 1. Local Area Network (LAN): It is usually a small network that is restricted to a small geographic area. For instance, a computer network available only to the residents of a building can be called a LAN. 2. Wide Area Network (WAN): As the name implies, these networks cover a broad range of geographic area. WANs are used to connect LANs and other types of networks together so that users and computers can communicate with computers in other regions. An example of a WAN is the much-used and loved, Internet. 3. Metropolitan Area Network (MAN): MAN is a network that connects the users with computer resources in a geographic area that is larger than LAN but not quite as large as WAN. What are the basic components of Computer Networks? 1.Servers - Servers are computers that hold shared files, programs, and the network operating system. Servers provide access to network resources to all the users of the network. There are many different kinds of servers, and one server can provide several functions. For example, there are file servers, print servers, mail servers, communication servers, database servers, print servers, fax servers and web servers, to name a few. 2.Clients - Clients are computers that access and use the network and shared network resources. Client computers are basically the customers(users) of the network, as they request and receive services from the servers. 3.Transmission Media - Transmission media are the facilities used to interconnect computers in a network. Transmission media are sometimes called channels, links or lines. 4.Shared data - Shared data are data that file servers provide to clients such as data files, printer access programs and e-mail. 5.Shared printers and other peripherals - Shared printers and peripherals are hardware resources provided to the users of the network by servers. Resources provided include data files, printers, software, or any other items used by clients on the network. 6.Network Interface Card - Each computer in a network has a special expansion card called a network interface card (NIC). The NIC prepares(formats) and sends data, receives data, and controls data flow between the computer and the network. On the transmit side, the NIC passes frames of data on to the physical layer, which transmits the data to the physical link. On the receiver's side, the NIC processes bits received from the physical layer and processes the message based on its contents. 7.Local Operating System - A local operating system allows personal computers to access files, print to a local printer, and have and use one or more disk and CD drives that are located on the computer. 8.Network Operating System - The network operating system is a program that runs on computers and servers, and allows the computers to communicate over the network. 9.Hub - Hub is a device that splits a network connection into multiple computers. It is like a distribution center. When a computer request information from a network or a specific computer, it sends the request to the hub through a cable. The hub will receive the request and transmit it to the entire network. Each computer in the network should then figure out whether the broadcast data is for them or not. 10.Switch - Switch is a telecommunication device grouped as one of computer network components. It uses physical device addresses in each incoming messages so that it can deliver the message to the right destination or port. Useful Links: 1-Wikiversity 2-Webopedia 3-Wikipedia Questions: 1-What is the difference between switch and hub? 2-How Is it possible to change the computer’s IP address using some software ? 3- Can we change from one of computer network type to another? Which is the transmission of messages and files via a computer network is a primary communication method for both personal and business use?Today, e-mail is a primary communications method for both personal and business use. You use an e-mail program to created, send, receive, forward, store, print and delete e-mail messages.
What is a transmission in computer terms?Data transmission is the transfer of data from one digital device to another. This transfer occurs via point-to-point data streams or channels.
What is the transmission of messages?The transmission model of communication describes communication as a one-way, linear process in which a sender encodes a message and transmits it through a channel to a receiver who decodes it.
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