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BN106 - Network Models, Media and Connections - Networking Fundamentals

7 Pages1771 Words110 Views
   

Melbourne Institute of Technology

   

Networking Fundamentals (BN106)

   

Added on  2020-03-01

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Small start-up businesses can have their operations made easy by incorporating networks and subnetworks in their offices and departments. This assignment will discuss communication problems that can handle by the network and the devices. This assignment will focus on the advantages of using the network to enhance the intercommunication of the devices.

BN106 - Network Models, Media and Connections - Networking Fundamentals

   

Melbourne Institute of Technology

   

Networking Fundamentals (BN106)

   Added on 2020-03-01

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ABC-Z limited network designIntroductionSmall start-up businesses can have their operations made easy by incorporating networks and subnetworksin their offices and departments. Having the offices interconnected by a networks makes it easy to share files, information and even resources such as printers and this will help the business save on cost and minimize work done manually due to shortage of resources. ABC-Z limited as a small start-up business setting up business operations on the outskirts of Melbourne CBD will also have easy operations if it employs a TCP/IP network system to interconnect their computers and other devices. All their communication problems will be handled by the network and the devices which need to send logs will sendthe logs and the logs received immediately from the receivers’ side. There is a great advantage for using thenetwork to enhance the intercommunication of the devices since the owners will just need to often check whether the logs are still streaming in.
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Question 1Networking devices can communicate even when they are made by different manufacturers. In their design, there are reference models applied that allow them to communicate as long as they are connected and in the same network. These reference models are the Open System Interconnection (OSI) and the Transmission Control Protocol/Internet Protocol (TCP/IP)[ CITATION Beh03 \l 1033 ]. Examples of the TCP/IP protocol suite in use today include the Dynamic Host Configuration Protocol (DHCP) and the Address Resolution Protocol (ARP).The Dynamic Host Configuration Protocol provides its host with all the necessary information for configuration automatically[ CITATION Ral03 \l 1033 ]. The IP address, the subnet mask and the default gateway are all issued automatically to the host.Bootstrap Protocol (BOOTP) is a protocol used by the Dynamic Host Configuration Protocol to share its implementation details[ CITATION Ral16 \l 1033 ]. The protocol suite contains the Dynamic Host Configuration Protocol Server where all the hosts acquireTCP/IP configuration information.Using the Dynamic Host Configuration Protocol makes it easy to move nodes from one subnet to another since the IP addresses are automatically acquired. In cases where the Dynamic Host Configuration Protocol suite is not used, the unique unicast IP addresses needed for each node connected by the TCP/IP model willneed manual reconfiguration if a computer is moved from one computer to another[ CITATION Ber02 \l 1033 ]. If a computer is removed from the network, a manual reclamation would be needed too. The Dynamic Host Configuration Protocol server keeps all the host IP addresses and dynamically assigns them to hosts automatically when the computer starts on the network. If the computer stops accessing the network, the IP address is reclaimed automatically by the Dynamic Host Configuration Protocol server[ CITATION Beh09 \l 1033 ].The host accessing the internet must be DHCP-enabled to allow the Dynamic Host Configuration Protocol server store its configuration information in a database. The client in turn automatically receives a valid IP address and the Dynamic Host Configuration Protocol options requested e.g. default gateway, DNS Servers, and the Domain Name.
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Figure 1: Acquisition of an IP address by A DHCP enabled host.The Address Resolution Protocol on the other hand maps IP network addresses to physical machine addresses (Media Access Control addresses) that are recognized in the network. The Address Resolution Protocol suite uses the ARP cache in maintaining the relation between the Media Access Control (MAC) address with the corresponding IP address by providing the rules to define the relations and doing the conversions of the addresses[ CITATION For \l 1033 ].The ARP cache has a big size though it can contain very many computers’ IP addresses if not continually cleared. This is handled but deleting all the entries of computer addresses saved in the cache which removes all entries of unused addresses and free spaces. A client therefore caches a give Internet Protocol (IP) address only for a short time. During the deletion, the ARP cache also deletes all the IP addresses of computers that are currently not running. This is done by considering all the unsuccessful attempts to contact the computers.
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