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The document discusses four different types of digital networks: Ethernet, which is a family of frame-based technologies for local area networks; ISDN, which is a circuit-switched telephone network designed for digital transmission of voice and data over copper wires; TCP/IP, which is the set of communication protocols used for the Internet and similar networks, including TCP and IP; and LAN, which is a computer network covering a small physical area like a home, office, or small group of buildings.
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Ethernet is a family of networking technologies commonly used in local area networks (LANs). The original Ethernet from the 1970s used coaxial cable as a shared medium, while newer variants use twisted pair cables and fiber optics connected through switches. Over its history, Ethernet speeds have increased from 2.94 megabits per second to 400 gigabits per second. Ethernet frames contain source and destination addresses and error checking to detect damaged frames. Ethernet is widely used both in homes and industry, and forms a key part of the infrastructure of the Internet.
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The document discusses the different types of computer networks categorized by the physical area they cover, including local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs). It provides details on LANs and WANs, explaining that LANs connect devices over shorter distances within a single location, while WANs connect multiple LANs across large physical distances. The document also briefly introduces MANs, storage area networks, and system area networks.
Nad710 Introduction To Networks Using Linux
This document provides an overview of the course "NAD710 - Introduction to Networks Using Linux". The course will cover the history and architecture of networks like the Internet and ARPANET. It will teach students about networking protocols like TCP/IP, network devices, Linux network configuration and commands, DNS, NFS, Samba, routing, wireless networking, and tools for network monitoring and discovery. Students will be evaluated based on a midterm test, term assignments/labs, and a final exam.
Local Area Network – Wired LAN
A local area network (LAN) uses wired connections to connect devices within a limited geographic area like a building or campus. Ethernet became the dominant wired LAN technology using carrier sense multiple access with collision detection (CSMA/CD) to regulate shared access to the transmission medium. Ethernet has evolved from 10 Mbps to 100 Mbps to 1 Gbps standards to meet increasing bandwidth demands. Key components of wired LANs include network adapters, cabling, connectors, switches/hubs, and software protocols. Other historical wired LAN technologies like Token Ring and Token Bus used token passing for medium access but have been largely replaced by Ethernet.
INTERNET FUNDAMENTALS
This presentation is all about the internet basics we need to know before making a website or some other internet related works . This will help you to have a clear idea on What Is Internet.
Thank you
feel free to ask any queries in comment box
Introduction to TCP/IP
TCP/IP is a set of protocols that defines how data is transmitted and formatted so that networked systems can communicate. It originated from ARPAnet, which was developed by the Department of Defense to create a decentralized network resilient to attacks. TCP/IP provides logical addressing, routing between networks, name resolution from names to addresses, error checking and flow control for reliable data transmission, and support for multiple applications simultaneously through the use of ports. It is overseen by various standards organizations to ensure interoperability.
Data Communications and Computer Networks
This document discusses personal area networks (PANs). The key points are:
- PANs connect devices within a short range, usually 10 meters or less, and include devices like smartphones, smartwatches, headphones, and speakers.
- They allow devices to communicate with each other directly or through a gateway device to connect to higher level networks and the internet.
- PANs can be wired using technologies like USB or wireless using technologies like Bluetooth, WiFi, or infrared. They provide an easy way to connect personal devices within a small area.
Internet and www
The document discusses the history and development of the Internet and World Wide Web. It covers:
- The origins of the Internet from research networks in the 1960s to the adoption of TCP/IP and opening to commercial traffic in the 1980s.
- The creation of the World Wide Web in 1989 and the release of the Mosaic browser that fueled widespread public use in the early 1990s.
- How the Internet grew exponentially through the 1990s with the commercialization of backbone networks and emergence of e-commerce.
Introduction to TCP / IP model
The document provides an overview of TCP/IP networking and introduces some key concepts. It discusses:
- The TCP/IP network model which consists of 5 layers - application, transport, internet, network interface, and hardware. Each layer adds encapsulation information to the data as it travels down the stack.
- Common network types like LANs, WANs, CANs, and MANs and provides definitions for each.
- The OSI reference model which also consists of 7 layers and describes similar layer functions as the TCP/IP model.
- The roles and responsibilities of each layer in the TCP/IP model. The hardware layer deals with physical hardware and signaling. The network interface layer adds
CCNA ppt Day 1
This document provides information about Cisco and the CCNA certification. It discusses Cisco as a company and their networking products. The CCNA certification focuses on routing, switching, security, service provider, and voice communication skills. The CCNA exam contains questions in drag and drop and simulation formats. The document also summarizes different types of computer networks, common networking devices, cable types, topologies and more.
1. introduction data comm
This document provides an introduction to data communication. It discusses key topics such as:
- Data communication involves the exchange of data between devices via transmission media.
- Common transmission modes include simplex, half-duplex, and full-duplex.
- Communication channels include narrowband, voice band, and broadband channels.
- Computer networks allow simultaneous access to shared data and devices from multiple nodes.
Introduction internet appli
This document provides an introduction to the internet and related topics. It begins by outlining the objectives of the section, which are to define the internet, remind learners of internet protocols, describe how the internet works, types of servers, and internet addressing. It then defines the internet and describes how it works through hardware components and protocols. It discusses types of servers including web servers, DNS servers, and proxy servers. It concludes by covering topics of internet addressing like IP addresses, domain names, and DNS.
E business 2014 l06
This document discusses computer networks and their basic components. It begins by defining a computer network as a group of interconnected computers that allows sharing of resources and information. It then covers communication models including simplex, half-duplex and full-duplex transmission. The document also categorizes networks by scale, structure, topology and media. Finally, it discusses important network concepts such as internetworking, intranets and the development of the Internet.
Networking
The document discusses networking, defining it as linking computing devices together with hardware and software to enable data communication. It describes common uses of home networks to share files, printers, and internet connections between two computers. It then defines different types of area networks including local area networks (LANs) within a building, metropolitan area networks (MANs) connecting users in a region, and wide area networks (WANs) connecting networks globally. It also outlines basic network topologies like bus, star and ring, and common network devices like Ethernet, routers, switches and hubs. Finally, it introduces important network protocols like HTTP, TCP/IP and OSI that provide communication standards for the internet.
lis508p02a-10.ppt
The document summarizes the history and development of Ethernet and TCP/IP networking protocols. It describes how ARPANET originally used packet switching in the 1960s, the development of TCP and IP in the 1970s, and how Ethernet was implemented as a standard for local area networks. It also provides an overview of how IP, TCP and common applications like HTTP operate and interconnect across network layers.
Connectivity and the Internet.ppt
This document defines and describes different types of computer networks. It begins by defining connectivity and networks. It then describes personal area networks (PANs), local area networks (LANs), campus area networks (CANs), metropolitan area networks (MANs), and wide area networks (WANs). The largest and most well-known example of a WAN is the Internet, which connects millions of computers worldwide. The document then provides a brief history of the development of the Internet and World Wide Web.
"Internet Protocol Suite" prepared by Szymon M. from Poland
The document summarizes the Internet Protocol Suite (TCP/IP), which is the set of communication protocols used for the Internet and similar networks. It consists of four layers - link, internet, transport, and application layers. Some important protocols included in each layer are IP, TCP, UDP, and higher-level protocols like HTTP, FTP, and SMTP. The TCP/IP model uses encapsulation, adding headers at each layer to abstract the protocols and allow communication across networks.
Ethernet and LIFI
Ethernet was invented in the 1970s at Xerox PARC and was later commercialized. It is a widely used wired networking technology that uses bus topology and CSMA/CD protocol to allow multiple devices to share bandwidth on the same network. Li-Fi is a new wireless technology that uses visible light communication through LED lights to transmit data, providing a potential alternative to Wi-Fi that has benefits like higher speeds, more bandwidth availability, and better security. It was introduced in 2011 and companies are working to commercialize Li-Fi products and networks. Potential applications include use in places where radio signals cannot be used safely or are restricted.
Ga11
This document provides an overview of circuits-switched digital networks and their key components. It discusses routers and their functions in connecting different networks. It then explains ISDN as a digital network for digital packet transmission and circuit switching data communication. It also covers TCP/IP as a protocol suite used to construct networks and connect computers on the Internet. Finally, it discusses Ethernet as the standard for modern LANs that combines TCP/IP protocols and physical standards.
Network ppt
This document provides an overview of key concepts in computer networks and communication. It defines what a network is, discusses the need for networking and sharing of resources, and outlines the evolution of early networks like ARPANET and NSFNET into the modern Internet. It also covers network topologies, transmission media, switching techniques, common network devices, and communication protocols.
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11
- 1. ow Circuit-Switched Digital Networks Wo About Ethernet About ISDN About TCP/IP About LAN . – p.1/6
- 2. About Ethernet Ethernet is a family of frame-based computer networking technologies for local area networks (LANs). The name comes from the physical concept of the ether. . – p.2/6
- 3. About ISDN ISDN is a circuit-switched telephone network system, that also provides access to packet switched networks, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in better voice quality than an analog phone. . – p.3/6
- 4. About TCP/IP The Internet Protocol Suite (commonly TCP/IP) is the set of communications protocols used for the Internet and other similar networks. It is named from two of the most important protocols in it: the Transmission Control Protocol (TCP) and the Internet Protocol (IP), which were the first two networking protocols defined in this standard. . – p.4/6
- 5. About LAN A local area network (LAN) is a computer network covering a small physical area, like a home, office, or small group of buildings, such as a school, or an airport. . – p.5/6
- 6. Referance Wikipedia : http://ja.wikipedia.org Yahoo : http://image-search.yahoo.co.jp/ . – p.6/6