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Computer Network Assignment help, Computer Network Online Tutors


 

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Computer network is a set of interconnected computers by a network and computer that are connected on a network are termed as nodes. The connection between computers can be done by Ethernet cable, LAN cable and wireless via radio waves. The connected computers can share file resources, internet access, servers and printers.


Types of computer network connection:


  • Star topology: In this topology the computers are connected by a central node or hub and the cables are extends to each computer. In this connection the all connected computers are independent to the center network and if one of the systems gets damaged than it will not affect the other computer. It requires large cable length for connection.
  • Bus topology: A bus topology is another computer design network in which all the computers are connected to a single cable and the information pass out via each connected computer. In this network when a cable is broken the entire network gets stopped working. In this network design less cable length is required. Computer network architecture can be based on peer to peer connection and could be client server architecture.

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  • Algorithm design and problem-solving, Data representation, Programming, Software development, Data representation, Communication and Internet technologies, Security
  • Monitoring and control systems, Computational thinking and problem-solving, Algorithm design methods, Further programming, File processing, Exception handling, Software development.

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  • Protocols in the network layer, such as routing algorithms and IP addressing principles, Design principles and protocols in the link layer, such as error control and flow control algorithms
  • Design principles and communication protocols in the physical layer, such as Nyquist theorem and Shannon-Hartley Law, Implement and debug network algorithms, protocols or systems with modern programming languages and platforms
  • Design principles and protocols in the application layer, such as HTTP and FTP protocols, Design principles and protocols in the transport layer, such as congestion control, flow control, reliability control algorithms and TCP/UDP protocols

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  • Network applications, LAN Card, WLAN - Wireless Local Area Network, Client-server model, HTTP, Semantics, Gigabit internet, Types of network - WAN, LAN, SAN, WLAN, MAN, CAN, PAN, DAN, OSPF, TCP/IP syntax, PoE, PAN - Personal Area Network, MAN - Metropolitan Area Network, ATM, Routing, CAN - Campus Area Network or Controller Area Network, IPv6 - Internet Protocol Version 6

  • A computer network consists of a collection of computers, printers and other equipment that is connected together so that they can communicate with each other. Computer networking is the practice of interfacing two or more computing devices with each other for the purpose of sharing data. Computer networks are built with a combination of hardware and software. Computer networks can be categorized in several different ways. One approach defines the type of network according to the geographic area it spans. Computer networks also differ in their design approach. The two basic forms of network design are called client/server and peer-to-peer. Client-server networks feature centralized server computers that store email, Web pages, files and or applications accessed by client computers and other client devices.


    Components of a Network


    A computer network comprises the following components:


  • A minimum of at least 2 computers
  • Cables that connect the computers to each other, although wireless communication is becoming more common (see Advice Sheet 20 for more information)
  • A network interface device on each computer ( network interface card or NIC)
  • A ‘Switch’ used to switch the data from one point to another. Hubs are outdated and are little used for new installations
  • Network operating system software

  • Computer network, two or more computers that are connected with one another for the purpose of communicating data electronically. Besides physically connecting computer and communication devices, a network system serves the important function of establishing a cohesive architecture that allows a variety of equipment types to transfer information in a near-seamless fashion. Two popular architectures are ISO Open Systems Interconnection (OSI) and IBM’s Systems Network Architecture (SNA).


    Two basic network types are local-area networks (LANs) and wide-area networks (WANs). LANs connect computers and peripheral devices in a limited physical area, such as a business office, laboratory, or college campus, by means of links (wires, Ethernet cables, fibre optics, Wi-Fi) that transmit data rapidly. A typical LAN consists of two or more personal computers, printers, and high-capacity disk-storage devices called file servers, which enable each computer on the network to access a common set of files. LAN operating system software, which interprets input and instructs networked devices, allows users to communicate with each other; share the printers and storage equipment; and simultaneously access centrally located processors, data, or programs (instruction sets). LAN users may also access other LANs or tap into WANs. LANs with similar architectures are linked by “bridges,” which act as transfer points. LANs with different architectures are linked by “gateways,” which convert data as it passes between systems.


    WANs connect computers and smaller networks to larger networks over greater geographic areas, including different continents. They may link the computers by means of cables, optical fibres, or satellites, but their users commonly access the networks via a modem (a device that allows computers to communicate over telephone lines). The largest WAN is the Internet, a collection of networks and gateways linking billions of computer users on every continent.