Computer networking-revised
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A computer network connects electronic devices through wireless or wired connections, allowing sharing of resources. Networks can be as simple as two computers sharing files or as large as networks spanning schools and businesses with thousands of devices. Larger networks are made up of local area networks (LANs) within individual buildings connected by wide area networks (WANs) spanning multiple locations. Network software provides communication protocols to allow all devices to interconnect and share resources, while routers, switches, servers and other hardware direct traffic and sharing.
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Computer networking
A computer network allows electronic devices to connect and share resources through wireless or wired connections. Networks can be as simple as two computers sharing files or as large as networks spanning businesses, schools, and globally with the Internet. Larger networks are more complex and may require network software and servers to manage connections and security between thousands of devices. The basic components of a home network typically include a computer, modem, router, and optionally a printer to share an Internet connection and resources between devices in a home.
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This document provides an overview of computer networks. It defines different types of networks including personal area networks (PANs), local area networks (LANs), campus area networks (CANs), metropolitan area networks (MANs), and wide area networks (WANs). It also describes common network hardware such as hubs, switches, and routers. The document concludes with an assignment for students to design a network for a new school in Phuket that will include 4 buildings and explain why the network is needed and what type of network would be best.
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A computer network allows computers to communicate and share resources like hardware, software, and data. A local area network (LAN) connects computers within a limited geographic area, like a home or office, through cables or wirelessly. To connect to a LAN you need a username and password to access files on the network. The internet is a global system of interconnected computer networks that is accessible worldwide.
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Internetwork
The document provides an overview of how to create an internet by connecting two or more networks. It explains that a network is formed when two or more devices are connected, and an internet is created when two or more networks are connected to share data. It states that a router is used to connect the networks by directing traffic between them, functioning like a traffic light with GPS to determine where traffic should go. Connecting two or more networks with a router, either wired or wireless, forms an inter-network, also known as an internet.
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This document discusses different types of computer networks. It defines local area networks (LANs), metropolitan area networks (MANs), wide area networks (WANs), personal area networks (PANs), virtual private networks (VPNs), peer-to-peer networks, and client-server networks. Each network type is described in 1-2 sentences and an example is provided for each. Advantages and disadvantages are listed for LANs, MANs, WANs, PANs, and peer-to-peer networks. Various online resources used for the information are referenced at the end.
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The document discusses the basic components and principles of computer networks. It covers:
- The main components of a network include hosts, shared peripherals, networking devices, and networking media. Hosts directly communicate on the network while peripherals rely on hosts.
- Networks allow communication through the transmission of messages from a source to a destination using a channel. For successful communication, messages must follow protocols for identification, format, size, timing, and patterns.
- Messages are encoded at the source before transmission, then decoded at the destination. They are formatted and encapsulated with addressing information before being sent in frames of an appropriate size based on the network's rules. Timing protocols like access methods and flow control ensure
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A computer network connects multiple devices together to share resources. The main advantages of a network include resource sharing, reliable data storage through backups, and centralized storage of files. There are different types of networks including personal area networks (PANs), local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). Networks require transmission media like cables or wireless signals to connect devices and transfer data. Common network devices that help facilitate networking include network interface cards, hubs, switches, repeaters, and routers.
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Computer networking
A computer network allows electronic devices to connect and share resources through wireless or wired connections. Networks can be as simple as two computers sharing files or as large as networks spanning businesses, schools, and globally with the Internet. Larger networks are more complex and may require network software and servers to manage connections and security between thousands of devices. The basic components of a home network typically include a computer, modem, router, and optionally a printer to share an Internet connection and resources between devices in a home.
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The document discusses the basic components and principles of computer networks. It covers:
- The main components of a network include hosts, shared peripherals, networking devices, and networking media. Hosts directly communicate on the network while peripherals rely on hosts.
- Networks allow communication through the transmission of messages from a source to a destination using a channel. For successful communication, messages must follow protocols for identification, format, size, timing, and patterns.
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Computer networking
A computer network connects multiple devices together to share resources. The main advantages of a network include resource sharing, reliable data storage through backups, and centralized storage of files. There are different types of networks including personal area networks (PANs), local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). Networks require transmission media like cables or wireless signals to connect devices and transfer data. Common network devices that help facilitate networking include network interface cards, hubs, switches, repeaters, and routers.
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Arpanet was a network developed by the Advanced Research Projects Agency of the United States Department of Defense during the Cold War to facilitate information sharing among researchers. Computer spam involves sending many meaningless emails to recipients, while the internet allows online connectivity between individuals globally as opposed to an intranet which is a private network within an organization. A router enables WiFi connectivity within a designated area by broadcasting signals to devices for internet access.
KC.pptx
This document defines and compares different types of computer networks. A local area network (LAN) connects computers within a confined location using TCP/IP or WiFi. A personal area network (PAN) is the smallest type of network, connecting devices like phones and tablets for one person within one building using wireless technologies like Bluetooth. A metropolitan area network (MAN) connects computers within a metropolitan area, larger than a LAN but smaller than a WAN. A wide area network (WAN) connects computers over longer distances, allowing remote communication between devices miles apart.
Arpanet
The ARPANET was the world's first operational packet switching network and the predecessor to the global internet. It was developed by the Advanced Research Projects Agency (ARPA) of the United States Department of Defense during the Cold War.
Learning assignment (computer Networking)
A computer network allows sharing of information and resources between connected computers. There are three main types of networks: local area networks (LANs) which connect computers in a limited area like a home or office; wide area networks (WANs) which span large geographical areas like countries; and metropolitan area networks (MANs) which interconnect users in a region larger than a LAN but smaller than a WAN. Other network types include personal area networks (PANs) around an individual, home networks, enterprise private networks, storage area networks (SANs), campus area networks (CANs), and global area networks (GANs).
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The document discusses various topics related to networking infrastructure and protocols:
1. It describes the components of a structured cabling system and benefits of an extended star topology used for cabling.
2. It explains several key protocols used at different layers of the OSI model including SMTP, ARP, FTP, and SSL and their functions.
3. It discusses wireless networking components like wireless routers/modems and adapters and how Wi-Fi works based on IEEE 802.11 standards at the physical and data link layers.
4. It covers Wi-Fi standards, advantages and disadvantages of wireless networking, and factors to consider for wired vs wireless implementation in a LAN.
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IT for Information Professionals Notes
Notes from a presentation given to the CLSIG Professional Development Club, London, 22 September 2008.
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The document discusses different types of network topologies including point-to-point, bus, star, ring, mesh, tree and hybrid. It provides details on point-to-point, bus and star topologies. Point-to-point topology connects two computers directly in close proximity. Bus topology uses one main cable that connects all nodes and if it breaks the whole network fails. Star topology connects each computer to a central hub allowing for easier troubleshooting than bus topology.
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This document discusses the benefits of computer networks, including ease of use, lack of distance limitations, mobility, efficiency, hassle-free file sharing, resource sharing, faster communication and collaboration. It also lists some common networking devices like routers, switches, hubs, and gateways. Finally, it briefly covers network topologies, networking media like wired and wireless, and applications of networks like email, web browsing, e-commerce, and video conferencing.
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The document provides information about networking including:
1. It defines what a network is and discusses the early origins and development of networking beginning in the 1960s for military purposes.
2. It outlines the key exams, certifications, and topics covered in the CCNP certification for networking professionals.
3. It discusses different types of network topologies including bus, star, ring, and mesh, and compares their advantages and disadvantages for different networking situations and needs.
introduction of network
This document provides an overview of computer networks and networking concepts. It discusses centralized, distributed, and collaborative network models. It describes common network topologies like star, bus, ring, mesh, and fully connected. The document also covers the OSI reference model and TCP/IP model, detailing the layers and functions of each. Computer network protocols, standards organizations, and interfaces are defined. Uses of networks for organizations and individuals are outlined.
Electronic Communication Investigate
This document defines and explains several key concepts in electronic communication:
ARPANET was the world's first operational packet switching network. A soft bounce occurs when an email reaches the recipient's server but bounces, while a hard bounce means the address is permanently undeliverable. Computer spam refers to junk email or newsgroup posts. An intranet is a private network using web software, while the internet is a global network connecting computers worldwide. POP is used for pop-up ads intended to attract traffic or capture email addresses. Phishing involves masquerading as a trusted entity to acquire sensitive information. Encryption converts data to code while decryption converts it back, requiring a secret key. Netiquette involves social conventions that facilitate
(3 9 09) Electronic Communication Investigate, Slideshare Slideshow
ARPANET was the world's first operational packet switching network and predecessor to the global Internet. Hard bounces occur when emails are permanently undeliverable, while soft bounces happen when emails reach the recipient's server but bounce before delivery. Computer spam refers to junk emails or newsgroup posts, some containing viruses. The Internet connects millions of global computers, while an intranet is a private network within an organization only accessible to members. POP retrieves email from servers, phishing involves scam emails pretending to be legitimate, and encryption involves encoding data while decryption decodes encrypted data. Netiquette refers to proper online behavior which affects one's reputation, and routers forward data packets between networks.
Networks
This document defines and describes different types of computer networks. It explains that a computer network connects computers together to share resources. There are three main types of networks based on size: local area networks (LANs) which connect computers within a single site or building; metropolitan area networks (MANs) which connect LANs over a larger geographic area like a city; and wide area networks (WANs) which interconnect LANs across geographic distances that could span multiple cities or countries. The key differences between these network types are their size, connection technology, and purpose.
PPt on internet
The document provides information about the history and workings of the internet. It discusses how the internet began as the ARPANET project in 1969 to connect universities and the US Defense department. It then explains how the internet works by breaking messages into packets that are sent and reassembled. The key protocols that allow the internet to function including TCP/IP and HTTP are described. The governance and standards bodies that coordinate the internet without a single authority are also outlined. Finally, popular uses of the internet such as email, search engines, and social networking are summarized.
La3 ict-topic-3-computer-networks
The document discusses computer networks and communications, describing a computer network as a system that connects devices like computers, printers and scanners to allow them to communicate and share resources. It explains that networks can operate via wired or wireless connections, and defines communications as the transfer of information across a distance using physical mediums like wires, cables or wireless signals to transmit digital or analog signals. The document provides an overview of key topics in computer networks including network hardware and software components, different types of networks, and the differences between local, metropolitan and wide area networks.
network
This document discusses different types of computer networks. It defines local area networks (LANs), metropolitan area networks (MANs), wide area networks (WANs), personal area networks (PANs), virtual private networks (VPNs), home area networks (HANs), peer-to-peer networks, and client-server networks. For each network type, examples are provided and advantages and disadvantages listed. References used in creating the document are also included at the end.
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The document provides an overview of computer networks and details regarding the school's network. It discusses why networks are important, defines what a network is, and describes the key components and types of networks. The school's network uses a hierarchical extended star design with fiber optic cables connecting the school to servers located offsite. The network includes a wireless local area network (WLAN) within the school, a wide area network (WAN) connecting the school to other district sites, a storage area network (SAN) for student data, personal area networks (PANs) within classrooms, and a virtual private network (VPN) allowing remote access to files.
How to change mac address in windows 7 for craigslist
There are many people trying to get live ads on CL they use different tricks.They change ip address,craigslist phone verified accounts,description of ad but they still fail to get live ads.Why is that? CL and other websites can also easily track you by your mac address.Since CL is working really hard to provide best quality ads they donât spare spammers (that is what they call ads posters).It is so easy to change mac address in windows 7. Iâve tried this myself and output was really amazing.I was able to post ads without phone verification (never try to cheat on CL it will punch you so hard) and ads were also going live.Below are few simple steps by following which you can easily change your mac address.
http://outsource2freelancers.com/change-mac-address-in-windows-7/
06 mac address
MAC addressing uniquely identifies devices on a network. A MAC address is a unique 6-byte identifier assigned to network interfaces for identification. It consists of two parts - the first six hexadecimal digits identify the manufacturer and the remaining six digits are the interface serial number. Users can check their MAC address by opening the command prompt on their computer and entering the command "ipconfig/all", where the physical address shown is the MAC address.
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Arpanet
Arpanet was a network developed by the Advanced Research Projects Agency of the United States Department of Defense during the Cold War to facilitate information sharing among researchers. Computer spam involves sending many meaningless emails to recipients, while the internet allows online connectivity between individuals globally as opposed to an intranet which is a private network within an organization. A router enables WiFi connectivity within a designated area by broadcasting signals to devices for internet access.
KC.pptx
This document defines and compares different types of computer networks. A local area network (LAN) connects computers within a confined location using TCP/IP or WiFi. A personal area network (PAN) is the smallest type of network, connecting devices like phones and tablets for one person within one building using wireless technologies like Bluetooth. A metropolitan area network (MAN) connects computers within a metropolitan area, larger than a LAN but smaller than a WAN. A wide area network (WAN) connects computers over longer distances, allowing remote communication between devices miles apart.
Arpanet
The ARPANET was the world's first operational packet switching network and the predecessor to the global internet. It was developed by the Advanced Research Projects Agency (ARPA) of the United States Department of Defense during the Cold War.
Learning assignment (computer Networking)
A computer network allows sharing of information and resources between connected computers. There are three main types of networks: local area networks (LANs) which connect computers in a limited area like a home or office; wide area networks (WANs) which span large geographical areas like countries; and metropolitan area networks (MANs) which interconnect users in a region larger than a LAN but smaller than a WAN. Other network types include personal area networks (PANs) around an individual, home networks, enterprise private networks, storage area networks (SANs), campus area networks (CANs), and global area networks (GANs).
Computer Network ASsignment
The document discusses various topics related to networking infrastructure and protocols:
1. It describes the components of a structured cabling system and benefits of an extended star topology used for cabling.
2. It explains several key protocols used at different layers of the OSI model including SMTP, ARP, FTP, and SSL and their functions.
3. It discusses wireless networking components like wireless routers/modems and adapters and how Wi-Fi works based on IEEE 802.11 standards at the physical and data link layers.
4. It covers Wi-Fi standards, advantages and disadvantages of wireless networking, and factors to consider for wired vs wireless implementation in a LAN.
Networks
A network connects two or more computers to communicate and share resources. A local area network (LAN) spans a small distance like a home or school network, while a wide area network (LAN) connects computers across greater distances like cities or worldwide through the Internet. Key networking components include file servers, workstations, network interface cards, routers, switches, bridges, and repeaters. Networks use different types of cables for connectivity like coaxial, unshielded twisted pair, and fiber optic cables. Wireless networks connect computers without cables using technologies like WiFi. Wireless networks provide mobility but can face interference issues or security risks if unsecured. An intranet is a private internal network used within an organization, differing from the open global Internet
IT for Information Professionals Notes
Notes from a presentation given to the CLSIG Professional Development Club, London, 22 September 2008.
Network Topology
The document discusses different types of network topologies including point-to-point, bus, star, ring, mesh, tree and hybrid. It provides details on point-to-point, bus and star topologies. Point-to-point topology connects two computers directly in close proximity. Bus topology uses one main cable that connects all nodes and if it breaks the whole network fails. Star topology connects each computer to a central hub allowing for easier troubleshooting than bus topology.
Computer networking
This document discusses the benefits of computer networks, including ease of use, lack of distance limitations, mobility, efficiency, hassle-free file sharing, resource sharing, faster communication and collaboration. It also lists some common networking devices like routers, switches, hubs, and gateways. Finally, it briefly covers network topologies, networking media like wired and wireless, and applications of networks like email, web browsing, e-commerce, and video conferencing.
Networking and internet
This document provides an overview of computer networking and internet tools. It defines computer networking as connecting computers together to share information. It then describes different types of networks including LAN, MAN, WAN, and peer-to-peer. Several internet tools are also outlined such as email, social media platforms, Google Drive, and video conferencing software. The document concludes with tips for evaluating internet resources for accuracy, authority, and relevance.
Networking basics
The document provides information about networking including:
1. It defines what a network is and discusses the early origins and development of networking beginning in the 1960s for military purposes.
2. It outlines the key exams, certifications, and topics covered in the CCNP certification for networking professionals.
3. It discusses different types of network topologies including bus, star, ring, and mesh, and compares their advantages and disadvantages for different networking situations and needs.
introduction of network
This document provides an overview of computer networks and networking concepts. It discusses centralized, distributed, and collaborative network models. It describes common network topologies like star, bus, ring, mesh, and fully connected. The document also covers the OSI reference model and TCP/IP model, detailing the layers and functions of each. Computer network protocols, standards organizations, and interfaces are defined. Uses of networks for organizations and individuals are outlined.
Electronic Communication Investigate
This document defines and explains several key concepts in electronic communication:
ARPANET was the world's first operational packet switching network. A soft bounce occurs when an email reaches the recipient's server but bounces, while a hard bounce means the address is permanently undeliverable. Computer spam refers to junk email or newsgroup posts. An intranet is a private network using web software, while the internet is a global network connecting computers worldwide. POP is used for pop-up ads intended to attract traffic or capture email addresses. Phishing involves masquerading as a trusted entity to acquire sensitive information. Encryption converts data to code while decryption converts it back, requiring a secret key. Netiquette involves social conventions that facilitate
(3 9 09) Electronic Communication Investigate, Slideshare Slideshow
ARPANET was the world's first operational packet switching network and predecessor to the global Internet. Hard bounces occur when emails are permanently undeliverable, while soft bounces happen when emails reach the recipient's server but bounce before delivery. Computer spam refers to junk emails or newsgroup posts, some containing viruses. The Internet connects millions of global computers, while an intranet is a private network within an organization only accessible to members. POP retrieves email from servers, phishing involves scam emails pretending to be legitimate, and encryption involves encoding data while decryption decodes encrypted data. Netiquette refers to proper online behavior which affects one's reputation, and routers forward data packets between networks.
Networks
This document defines and describes different types of computer networks. It explains that a computer network connects computers together to share resources. There are three main types of networks based on size: local area networks (LANs) which connect computers within a single site or building; metropolitan area networks (MANs) which connect LANs over a larger geographic area like a city; and wide area networks (WANs) which interconnect LANs across geographic distances that could span multiple cities or countries. The key differences between these network types are their size, connection technology, and purpose.
PPt on internet
The document provides information about the history and workings of the internet. It discusses how the internet began as the ARPANET project in 1969 to connect universities and the US Defense department. It then explains how the internet works by breaking messages into packets that are sent and reassembled. The key protocols that allow the internet to function including TCP/IP and HTTP are described. The governance and standards bodies that coordinate the internet without a single authority are also outlined. Finally, popular uses of the internet such as email, search engines, and social networking are summarized.
La3 ict-topic-3-computer-networks
The document discusses computer networks and communications, describing a computer network as a system that connects devices like computers, printers and scanners to allow them to communicate and share resources. It explains that networks can operate via wired or wireless connections, and defines communications as the transfer of information across a distance using physical mediums like wires, cables or wireless signals to transmit digital or analog signals. The document provides an overview of key topics in computer networks including network hardware and software components, different types of networks, and the differences between local, metropolitan and wide area networks.
network
This document discusses different types of computer networks. It defines local area networks (LANs), metropolitan area networks (MANs), wide area networks (WANs), personal area networks (PANs), virtual private networks (VPNs), home area networks (HANs), peer-to-peer networks, and client-server networks. For each network type, examples are provided and advantages and disadvantages listed. References used in creating the document are also included at the end.
Fundamental Of Computer Network.
Fundamental Of Computer Network Part 2 .Basics of Computer Network. For more visit <a href="https://freshersmind.com">Jobs Site</a>
Networking Basics - Ferdon
The document provides an overview of computer networks and details regarding the school's network. It discusses why networks are important, defines what a network is, and describes the key components and types of networks. The school's network uses a hierarchical extended star design with fiber optic cables connecting the school to servers located offsite. The network includes a wireless local area network (WLAN) within the school, a wide area network (WAN) connecting the school to other district sites, a storage area network (SAN) for student data, personal area networks (PANs) within classrooms, and a virtual private network (VPN) allowing remote access to files.
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(3 9 09) Electronic Communication Investigate, Slideshare Slideshow
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How to change mac address in windows 7 for craigslist
There are many people trying to get live ads on CL they use different tricks.They change ip address,craigslist phone verified accounts,description of ad but they still fail to get live ads.Why is that? CL and other websites can also easily track you by your mac address.Since CL is working really hard to provide best quality ads they donât spare spammers (that is what they call ads posters).It is so easy to change mac address in windows 7. Iâve tried this myself and output was really amazing.I was able to post ads without phone verification (never try to cheat on CL it will punch you so hard) and ads were also going live.Below are few simple steps by following which you can easily change your mac address.
http://outsource2freelancers.com/change-mac-address-in-windows-7/
06 mac address
MAC addressing uniquely identifies devices on a network. A MAC address is a unique 6-byte identifier assigned to network interfaces for identification. It consists of two parts - the first six hexadecimal digits identify the manufacturer and the remaining six digits are the interface serial number. Users can check their MAC address by opening the command prompt on their computer and entering the command "ipconfig/all", where the physical address shown is the MAC address.
Wifi wimax
This document provides an overview of Wi-Fi and WiMAX wireless technologies. It describes Wi-Fi as a wireless local area network standard based on IEEE 802.11 that provides connectivity within 300 feet of an access point. It also outlines WiMAX as a wireless broadband standard based on IEEE 802.16 that can provide connectivity up to 30 km and mobile broadband up to 3 km from a base station. The document discusses the history, standards, components, strengths and weaknesses of both Wi-Fi and WiMAX networks.
Wireless Local Area Networks
Wireless local area networks (WLANs) allow for mobility by using radio frequency or infrared communications instead of cables to connect devices to a network. Common WLAN standards include 802.11a, 802.11b, 802.11g, and 802.11n. WLANs use technologies like direct sequence spread spectrum, frequency hopping spread spectrum, and orthogonal frequency-division multiplexing. The 802.11 architecture defines the physical layer, data link layer including logical link control and media access control, and network topologies like peer-to-peer, access point based, and point-to-multipoint.
Token bus
The document discusses Token Bus, which combines features of Ethernet and Token Ring. It operates as a physical bus but with stations logically organized into a ring, passing a token among them. Only the station holding the token can transmit data. Token Bus was limited to industrial applications and saw no commercial use for data communication. It uses the token passing mechanism over a physical bus topology at the data link layer.
3.Medium Access Control
Medium access control (MAC) is the sublayer of the data link layer that coordinates use of a shared medium in wireless networks. It addresses problems like hidden and exposed terminals through techniques like carrier sense multiple access (CSMA) and time division multiple access (TDMA). TDMA divides time into slots and assigns slots to different users to avoid collisions. Early random access protocols like Aloha and slotted Aloha had low throughput due to many collisions, while later protocols use RTS/CTS handshaking and carrier sensing to reduce collisions and improve throughput.
IEEE introduction
The Institute of Electrical and Electronics Engineers (IEEE) is a professional organization headquartered in New York City with over 375,000 members worldwide. It was formed in 1963 from the merger of the American Institute of Electrical Engineers and the Institute of Radio Engineers. IEEE develops thousands of standards to advance technological innovation for the benefit of humanity and has members in fields such as computer science, engineering, and mathematics.
IEEE 802 Standard for Computer Networks
Its about the need for standard in networking, and caters to IEEE 802 standard in detail. FI you want to listen to this lecture
https://www.youtube.com/watch?v=IVD5sOpA0lc
Mac addresses(media access control)
MAC addresses are 48- or 64-bit identifiers linked to the hardware of network adapters. They are expressed as hexadecimal strings like 01-23-45-67-89-AB. There are two types: universally administered addresses, which are assigned at manufacture with the first three octets identifying the manufacturer, and locally administered addresses, which can be manually changed but must be unique on the local subnet. MAC addresses can be useful for security and troubleshooting network issues.
IEEE STANDARDS 802.3,802.4,802.5
IEEE 802 refers to a family of standards dealing with local and metropolitan area networks. The 802 standards specify the lower two layers - data link and physical layers. The most widely used standards are 802.3 (Ethernet), 802.4 (Token Bus), and 802.5 (Token Ring). 802.3 uses CSMA/CD access method and is the most commonly used today. 802.4 uses token passing on a bus topology. 802.5 also uses token passing but on a logical and physical ring topology. All three standards define frame formats for transmission with fields like preamble, addresses, length, data, error checking.
Local area network
This document provides an overview of local area networks (LANs) and their components. It discusses the different types of computer networks and LAN topologies. It also describes some key LAN devices like hubs, switches, routers, wireless access points, and network interface cards. It provides an introduction to the TCP/IP networking protocols and the IEEE 802.11 wireless networking standards.
W-LAN (Wireless Local Area Network)
Wireless local area networks (WLANs) use radio waves to connect devices in a building or campus wirelessly. They integrate with wired networks through access points that bridge wireless and wired traffic. WLANs operate similarly to wired LANs but have some differences like lower security, limited bandwidth, and variable performance depending on location within the network coverage area. Common devices that use WLANs include tablets, smartphones and laptops.
IEEE Presentation
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Bluetooth is a wireless technology standard for exchanging data over short distances using short-wavelength UHF radio waves in the industrial, scientific and medical radio bands. It was created in 1994 by Ericsson to replace cables connecting devices like mobile phones, laptops, printers, and other electronic devices. Bluetooth allows for wireless connections between various devices to share information and transmit data wirelessly over short distances of around 10 meters. It uses a radio technology called frequency-hopping spread spectrum to handle interference and improve communication quality.
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Bluetooth technology presentation
Bluetooth is a wireless technology standard for exchanging data over short distances using short-wavelength UHF radio waves in the industrial, scientific and medical radio bands. It allows for the replacement of cables that traditionally connect devices, enabling devices such as phones, laptops, printers, digital cameras, and video game controllers to establish short-range radio links to connect and exchange information. Bluetooth technology works as a universal bridge between existing data networks and provides a mechanism for devices to form short-term networks when in close proximity without needing to be part of a permanent network infrastructure.
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A computer network connects independent computers allowing people to share files, peripherals, and communicate. The basic components of a network include at least two computers or devices connected via a networking interface card and cable or wireless connection. Common network types are LANs for local connections and WANs for long-distance connections. Protocols like TCP/IP are standards that allow networked devices to communicate by defining addressing and data transmission.
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A network connects two or more computers to share resources like printers, files, or allow communication. Common network types are local area networks (LANs) within a specific location like a home or office, and wide area networks (WANs) that connect multiple LANs over longer distances. Network hardware includes servers to store and share information, workstations for users, network cards to connect devices to the network, and switches, routers and firewalls to direct traffic and enhance security. Different types of cabling like unshielded twisted pair, fiber optic or wireless are used depending on the network's needs.
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1. A local area network (LAN) connects computers and devices over a limited area using common communication protocols. Ethernet is a widely used LAN that uses carrier sense multiple access with collision detection (CSMA/CD) to regulate access to shared cabling.
2. Modern LANs support a variety of devices and provide facilities like file sharing, printing, and applications through a client-server model with servers providing services to clients.
3. LANs come in different configurations but commonly use Ethernet, connect users within one building, and provide fast connections that are transparent to connected devices. Management software controls device configuration, user administration, and network resources.
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Networking involves connecting computing devices together to share data and communicate. The main advantages are easy and efficient communication, ability to share files and data, and rapid transfer of information. However, there are also disadvantages like network breakdowns causing loss of resources, high costs of building large networks, and security threats from hackers. Networks can be categorized based on their geographic reach, with local area networks (LANs) spanning a small area like a home or office, metropolitan area networks (MANs) connecting LANs across a city, and wide area networks (WANs) spanning countries or the entire world like the Internet. [/SUMMARY]
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Computer networking-revised
- 1. Computer Networking By Jill Lunceford EdTech 541
- 2. What is a Computer Network ď˝ A computer network is a complex system of interconnecting electronic devices that can be shared by one or more people and allows them to utilize resources that are connected through a wireless or hardwired connection. The larger the network, the more complex it becomes.
- 3. To infinity and beyondâŚ. ď˝ Networks can be as simple as two computers connected together to share files between each other. Most of us, if we have more than one computer, a printer and a connection to internet have a small network inside our home.
- 4. To infinity and beyondâŚ. ď˝ Businesses and schools can have networks within networks that could have 1000âs of devices interconnected across a city or even the country. This helps their employees and workers be more productive, work collaboratively and share resources like printers, scanners, hard drives, files and internet connections. Sharing of resources, especially hardware, can save a school or business a lot of money and eliminate having to purchase one of every thing for everyone.
- 5. To infinity and beyondâŚ. ⢠The internet, is a sense, is the largest network. A global network that we can all access. We can send email, share videos, photos, music, shop, browse a museumâs virtual collection, and do and interact with people and things literally around the world.
- 6. The Home Network ď˝ First , we must have a computer. Once we have that we need to have something to connect it to. In a home, we would first connect it to the modem that carries the internet connection from our Internet Service Provider (ISP). If we would like to connect more than one device (computer , printer, etc.) we would need to also add a router. This expands the capacity of the network. If the computer has wireless capability, you may consider adding a wireless router. This would allow the option of being just about anywhere in your home and still access the internet and your other network resources. Although not required, a printer is a nice addition to any home network that can be connected to the router either wirelessly or by a cable (âHow Home Networking Works,â n.d.). Cable Modem Wireless router Laptop
- 7. Larger Networks - LANâs LANâs (Local Area Networks) are networks where all the resources are located relatively close to each other. Usually within the same building. The main component of a LAN is a central server. The server houses files and software that can be shared and manages other network resources like printing and email. ď˝ Devices on the LAN connect through a switch that manages addressing of packets of information sent out on the network to make sure that it gets to the right place. The switch also looks for packets of information that are addressed to the resources that connect through it. Without the switch, packets of information on the network would never get to their destination (âWhat is a LAN,â n.d.).
- 8. Larger Networks â WANâs ď˝ WANâs (Wide Area Networks) are networks that are spread out over a large area. This could be spread over multiple buildings, across a city, or even spread out over several states. WANâs are essentially two or more LANâs connected together. Routers are used to manage and direct communication between the individual LANâs, where switches then make sure packets of information are delivered to the correct address or resource on the LAN (âWhat is a WAN,â n.d.).
- 9. Network Software ď˝ Like your individual computer, some sort of software is needed to create a common language (so to speak) for all devices on the network to be able to communicate with each other. Without it, the network would be like two people screaming at each other in totally different languages. ⢠Neither understanding the other, nothing getting accomplished and it only frustrates all those around them, continuing to complicate the situation.
- 10. Network Software ⢠On a small simple network, your computer or laptopâs operating system may be enough to run and manage your network. ď˝ For a larger more complex network and a more robust network software may need to be installed on the servers that manage the connections between all resources and help manage user accounts and rights to various aspects of the network. It can also add a layer or security to the network, filter websites and add a firewall to protect the network from external threats.
- 11. References ď˝ HowStuffWorks âHow Home Networking Works.â (n.d.). Retrieved February 8, 2012, from http://computer.howstuffworks.com/home- network.htm ď˝ What is a LAN? (n.d.). Retrieved February 8, 2012, from http://www.wisegeek.com/what-is-a-lan.htm ď˝ What is a WAN? (n.d.). Retrieved February 8, 2012, from http://www.wisegeek.com/what-is-a-wan.htm
- 12. Picture Credits ď˝ Slide 2 : http://visual.merriam-webster.com/communications/office- automation/computer-network/wide-area-network.php#routers33358 ď˝ Slide 3 : http://www.techstore.ie/our-services/computer-networking ď˝ Slide 5 : http://www.123rf.com/photo_3078786_global-computer-network.html ď˝ Slide 6 : ď˝ Cable modem : http://www.olx.com.sg/pictures/linksys-broadband-router-wrt54g- usbnetwork-adapter-motorola-sbv5120-cable-modem-iid-79853928 ď˝ Wirelss : http://www.olx.com.sg/linksys-broadband-router-wrt54g-usbnetwork- adapter-motorola-sbv5120-cable-modem-iid-79853928 ď˝ Laptop -: http://www.f-paper.com/?i935976-Photo:-Smart-Core-business-for-sale- 8000-the-ThinkPad-T420 ď˝ Slide 7 : ď˝ LAN : http://ops.fhwa.dot.gov/publications/telecomm_handbook/chapter2_03.htm ď˝ WAN : http://technet.microsoft.com/en-us/library/cc751420.aspx ď˝ Slide 8 : http://www.goodtherapy.org/blog/couples-do-dont-speak-same-language/ ď˝ Slide 9 : http://www.brown.edu/cis/information_security/news/06-021.html