Networking
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A computer network connects computers and devices using wired and wireless communication channels. It allows for sharing of resources and information. Wired networks use physical cables to connect devices, while wireless uses technologies like terrestrial microwave, communication satellites, and wireless LANs. Computer networks can be classified based on their physical extent, such as local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs), which connect devices within a building, across cities, and within a city, respectively. Virtual private networks (VPNs) extend private networks over public ones.
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Computer communication involves the transfer of data, instructions, and information between sending and receiving devices using communication channels. It requires a sending device, receiving device, and transmission medium to connect them. Common computer communication methods include email, voice mail, fax, telecommuting, videoconferencing, and the Internet. Devices like modems, cables, routers, and switches facilitate communication over different network topologies.
WNMC CH1.ppt
This document provides an overview of wireless communication and voice data. It discusses the history of wireless technology including the first wireless telephone conversation in 1880. It then describes different types of wireless communication such as satellite communication, infrared communication, broadcast radio, microwave communication, Wi-Fi communication, mobile communication systems, and Bluetooth technology. The document also discusses wireless devices, wireless communication protocols, and considerations for a wireless data communications strategy.
Wireless communication
The document discusses various types of wireless communication technologies. It describes how wireless communication allows transmission of information through electromagnetic waves like radio frequency and infrared without wires. It provides details on different wireless technologies including satellite communication, infrared, microwave communication, WiFi, Bluetooth, mobile communication systems and more. It also discusses concepts like multiple access techniques, wireless standards and compares cellular communication generations.
Advance wireless Introduction
The document discusses various types of wireless communication technologies. It describes how wireless communication allows transmission of information through electromagnetic waves like radio frequency and infrared without wires. It provides details on different wireless technologies including satellite communication, infrared, microwave communication, WiFi, Bluetooth, mobile communication systems and more. It also discusses concepts like multiple access techniques, wireless standards and comparisons of wireless generations.
COMPUTER network
This document provides an overview of computer networks. It begins by defining computer networking and its basic building blocks of nodes and links. It then shows a sample network diagram with common components like servers, PCs, switches, and routers. The document discusses different network media including wired options like twisted pair cable, coaxial cable, and fiber optic cable. It also covers wireless networks like terrestrial microwave, satellite communication, Bluetooth, and Wi-Fi. Overall, the document introduces the key concepts of computer networks and the network infrastructure used to connect devices both physically and wirelessly.
Computer networking
Computer networks allow for resource and information sharing between connected computers. There are three main types of networks based on geographical reach: local area networks (LANs) within a building or campus, metropolitan area networks (MANs) within a city, and wide area networks (WANs) spanning long distances globally. Devices can connect to these networks via various technologies like Ethernet cables, WiFi, or satellites.
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Networking
- 1. COMPUTER NETWORK Submitted By Gaurav Gupta IILM- Business School MBA July 2011 Wednesday, July 06, 2011 1
- 2. What is Computer Networking ? A computer network is a collection of computers and devices interconnected by communications channels(wire & wireless) Purpose—To facilitate communications and allow sharing of resources and information among interconnected devices Wednesday, July 06, 2011 2
- 3. COMMUNICATION MEDIUM Wednesday, July 06, 2011 3 Wired Communication Medium Wireless Communication Medium
- 4. WIRED COMMUNICATION Wednesday, July 06, 2011 4
- 5. WIRELESS TECHNOLOGIES TERRESTRIAL MICROWAVE – Terrestrial microwaves use Earth-based transmitter and receiver, like BTS(Base Trans-receiver Station) Wednesday, July 06, 2011 5
- 6. WIRELESS TECHNOLOGIES Communications satellites -- The satellites are stationed in space, typically 35,400 km (22,200 miles) (for geosynchronous satellites) above the equator. These Earth-orbiting systems are capable of receiving and relaying voice, data, and TV signals Wednesday, July 06, 2011 6
- 7. WIRELESS TECHNOLOGIES Wireless LANs – Wireless local area network use a high-frequency radio technology similar to digital cellular Wednesday, July 06, 2011 7
- 8. WIRELESS TECHNOLOGIES A global area network (GAN) is a network used for supporting mobile communications across an arbitrary number of wireless LANs, satellite coverage areas, etc. The key challenge in mobile communications is handing off the user communications from one local coverage area to the next Wednesday, July 06, 2011 8
- 9. NETWORKS CLASSIFIED BY THEIR PHYSICAL OR ORGANIZATIONAL EXTENT Local area network (LAN), Wide area network (WAN), Metropolitan area network (MAN), Personal area network (PAN), Virtual private network (VPN), Campus area network (CAN), Storage area network (SAN), Controller area network (CAN). Wednesday, July 06, 2011 9
- 10. VPN (Virtual Private Network) Share Brokerage Firm Wednesday, July 06, 2011 10
- 11. Wednesday, July 06, 2011 11