Dec 10, · The dissertation will also discuss the type of computer networks that businesses should use and how they can utilize them for their success. The study will then conclude which computer network is the best and how it can benefit when blogger.comted Reading Time: 8 mins Dissertation Network Design. And we have seen nothing but positive results: 96% of our customers leave positive comments about our service. Need help with your assignment? Live Chat. Thank you! We have received your message and will be responding to your enquiry as /10() Sep 29, · This dissertation focuses on the intermodal network design problem and it extends previous works in three aspects: 1) address competition among intermodal service providers, 2) incorporate uncertainty of demand and supply in the design, and 3) incorporate multi-period planning into investment decisions
Architectural Styles and the Design of Network-based Software Architectures
Title: Network Design — When implementing a network in an organisation, there are some design issues that must be considered before implementation. The requirements of the network must be clearly defined and all the network components to be used have to be clearly defined.
Some of the considerations are discussed below. Network architecture is the infrastructure consisting of software, transmission equipment, and communication protocols define the structural and logical layout of a computer network. The mode of transmission of a network can be wired or wireless depending on the requirements in an organisation.
There are various types of networks that can be applied in an organisation depending on the network size. Local area network LAN refers to network in a small geographical area, Metropolitan area network MAN refers to network in a city, and wide area network WAN refers to network that is spread geographically in a wide area. Among the three types of network, the company would implement LAN since it is only covering a small geographical area. The transmission medium of a network can be wired or wireless.
Wired medium involve use of coaxial cables or fiber-optic cables while wireless media involves wireless transmission of data. Depending on the bandwidth, throughput and goodput we are able to determine the best medium of transmission. Fiber optic cables have low signal loss since they avoid collision, and they are efficient in data transfer in high traffic networks.
Coaxial cables are less expensive compared with fiber optic cables, but they have high signal loss caused by collisions. Wireless transmission is efficient in local area network where there are few computers.
The management method of a network can be either peer to peer or client-server. Peer to peer is where there is communication between several computers without a central computer. Client-server is where each client is independent and a central server provides services to the clients.
In a peer to peer network, many computers can share a single application installed in one computer. In a client-server, they are designed to support large number of clients where the clients do not share resources. The client-server model security is enhanced because security is handled by the server. It is also easy to upgrade a client server model to meet new requirements in an organisation. Network topology is divided into physical and logical topology.
Physical topology refers to the way in which computers and other devices dissertation network design connected. Logical topology describes the layout of data transmission in a network. Bus, ring, star and mesh topologies are the main types of topologies. Bus topology is dissertation network design where all devices are connected with a single cable.
The topology works for small networks, but it is slow and collisions are common. Ring topology is where the cable runs around where each node is connected to each other. There are fewer collisions compared with a bus topology. A token ring is used to avoid collision. In a star topology, all the devices are connected to a central hub. There is a central management making it is faster in upgrading, but failure of the central hub brings down the entire network. Mesh topology connects all the devices to each other for fault tolerance and redundancy to improve performance.
Networks are frequently attacked by hackers and other malicious people. This makes security one of the key considerations when designing a network. To reduce the number of attacks on computer networks, the network should have firewalls, intrusion detection systems, VPN, and DMZ. These measures reduce the threat and detect malicious people in the network. This refers to the ability of the network to grow. The network should be scalable enough to cater for growth in the network infrastructure.
This is a design consideration where many computers in a private network access the network using one public IP address. This is a measure to enhance security in a network. The OSI model has seven layers as highlighted in the diagram, dissertation network design. Physical layer refers to the hardware and all network devices used in the network.
The layer defines the physical devices and the transmission medium. The layer receives service requests of the data-link layer and performs encoding and decoding of data in signals.
Data-link layer receives service requests of the network layer and sends service requests to the physical layer. The main function of the data-link layer is to provide reliable delivery of data across networks.
Other functions performed by the layer include framing, flow and error control, and error detection and correction. There are two sub layers of the data-link layer; media access control layer, and logical link control layer. Media access control performs frame parsing, data encapsulation and frame assembly.
Logical link control is responsible for error checking, flow control and packet synchronisation. Protocols in this layer include; X 25, frame relay and ATM. Network layer is responsible for managing all the network connections, network congestions, and packet routing between a source and destination. The layer receives service requests of the transport layer and sends service requests to the dissertation network design layer.
The main protocols in this layer are IP, ICMP, and IGMP. The main purpose of this layer is dissertation network design provide reliable data delivery which is error free by performing error detection and correction. The layer ensures that there is no loss of data, and data is received as it was sent. The layer provides dissertation network design connection-less or connection oriented service. There dissertation network design two protocols in this layer: UDP and TCP.
The main purpose of this layer is to establish and terminate sessions. The layer sets up and terminates connection between two or more processes. It also manages communication between hosts. If there is login or password validation, this layer is responsible for the validation process. Check-pointing mechanism is also provided by this layer. If an error occurs, re-transmission of data occurs from the last check-point.
Protocols in this layer include; RIP, SOCKS, and SAP. This layer is responsible for data manipulation, data compression and decompression, and manages how data is presented. The layer receives service requests of the application layer and sends service requests to the session layer. The layer is concerned with the syntax and semantics of the data in transmission. Data encryption and decryption cryptography is used to provide security in this layer.
Protocols involved in this layer include; ASCII, EBCDIC, MIDI, MPEG, and JPEG. This layer provides interaction with the end user and provides services such as file and email transfers. The layer sends dissertation network design requests to the presentation layer. It has several protocols used in communication; FTP, dissertation network design, HTTP, SMTP, DNS, TFTP, NFS, and TELNET. This layer control hardware and network devices used in the network.
Network access layer combines the physical and data-link dissertation network design of the OSI model. It functions as the network layer in the OSI model. The layer has the same functions as the transport layer in the OSI model. The main function of this layer is to provide reliable data delivery which is dissertation network design free, dissertation network design.
The layer receives service requests of the application layer and sends service requests to the internet layer. This is the layer that has applications that perform functions to the user. It combines the application, dissertation network design, presentation and session layers of the OSI model. The commands are: PING, TRACERT, ARP, IPCONFIG, NETSTAT, ROUTE, HOSTNAME, NBSTAT, and NETSH.
Ping is used to send ICMP echo to test the reachability of a network, dissertation network design. Donahoo, M. Amsterdam: Morgan Kaufmann.
Fall, K. Upper Saddle River, dissertation network design, NJ: Addison-Wesley. FitzGerald, J, dissertation network design. Business Data Communications and Network Dissertation network design. Hoboken, NJ: John Wiley. Leiden, C. TCP — IP. Hoboken: For Dummies. Liu, D. Next generation SSH2 Network Design and Implementation: Securing data in motion. Burlington, dissertation network design, MA: Syngress Pub.
Odom, W. Computer dissertation network design first-step.
Webinar: Networking Design and Best Practices
, time: 1:02:10Network Design and Structure Dissertations - Sample Dissertations
lat network design is much vulnerable to masquerading. In a flat network design, all the network infrastructure devices and end computers are connected together and do not have a clear boundary. The weakness of a flat network design is totally exposed when using Wi-Fi Dec 10, · The dissertation will also discuss the type of computer networks that businesses should use and how they can utilize them for their success. The study will then conclude which computer network is the best and how it can benefit when blogger.comted Reading Time: 8 mins Sep 29, · This dissertation focuses on the intermodal network design problem and it extends previous works in three aspects: 1) address competition among intermodal service providers, 2) incorporate uncertainty of demand and supply in the design, and 3) incorporate multi-period planning into investment decisions
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