BTEC M/618/7393 Unit 2: Principles and Design of Networked Systems – Report

Submission Format:

The assignment submission is in the form of:

1. A formal 10-minute presentation (10–15 slides as a guide, with supporting speaker notes) to communicate an investigation to a non-technical audience discussing the key features and characteristics of a range of network types, topologies, hardware and software.
2. An implementation plan to design a networked system and maintenance schedule for the specified scenario. The report should also include discussion of a range of server types and a justification of the final selection, along with a test plan and an analysis of user feedback.The recommended word limit is 1,000–1,500 words, although you will not be penalised for exceeding the total word limit.
3. A technical report to demonstrate the implementation of the designs for a networked system. The test plan created in the design should also be carried out and the test results recorded.The recommended word limit is 1,500–2,000 words, although you will not be penalised for exceeding the total word limit.You are required to make use of headings, paragraphs and subsections as appropriate, and all work must be supported with research and referenced using the Harvard referencing system.
4. A written report to evaluate the topology selected for the development of the networked system, as well as an evaluation of the implemented network.The recommended word limit is 1,000–1,500 words, although you will not be penalised for exceeding the total word limit.You are required to make use of headings, paragraphs and subsections as appropriate, and all work must be supported with research and referenced using the Harvard referencing system. You will also need to provide a bibliography using an appropriate referencing system such as Harvard. Inaccurate use of referencing may lead to issues of plagiarism if not applied correctly.

Unit Learning Outcomes:

• LO1 Examine networking principles and their protocols.
• LO2 Explain networking devices and operations.
• LO3 Design efficient networked systems
• LO4 Implement and diagnose networked systems.

Assignment Brief and Guidance:

Vocational scenario

You are a Junior Network Administrator at Swift & Bacon Publishers (SBP) Ltd, a medium sized company that deals with the publication of books and journals for the scientific and technical community. Books are published both as physical and electronic copies.

SBP Ltd is currently situated in two office buildings and contains four Publishing Teams that deal with subject-specific material: a team for Computer Science and Engineering, a team for Maths and Physics, a team for Biological and Chemical sciences and a team for the Biomedical Sciences.

Each Publishing Team has a Publishing Team Leader (PTL), and up to 20 Publishing Editors (PE). Each team has their own secured area on the network. Each PE has access to their own content only, as well as any shared team documentation, but they do not have access to any other documentation.

The PTL can access all material for that team. There is an area for SBP company documentation that anyone can view.

SBP receives manuscripts securely from their authors into an encrypted Public Repository Server (PRS) located on the premises. The manuscripts are then extracted from this repository by one of the four PTLs, who then assigns the manuscript to the PE.

All documentation and office software are located on a company file server.

Once a manuscript has been reviewed, it is uploaded to the Secure Publishing Server (SPS) where the content is either sent electronically to an external printing company or is available for download by paying customers.

SBP also maintains a team of three Network Administrators who have full admin access to the entire network.

There is also a Senior Publishing Manager and CEO who have access to all company documentation.

Since the 2020 pandemic, the company has realised that a hybrid working model is now most effective for their employees. SBP is planning to close one office building completely to allow staff to work from home if they choose.

SBP Building Configuration

SBP wants to set up their remaining building in the following physical configuration:

• The PRS and SPS servers are in a data centre on the top floor
• The middle floor is a suite of five public meeting rooms with full wired and wireless access
• The Network Server Room containing the company network and email servers is on the middle floor
• The network administrators are also located on the middle floor
• One network administrator must be present in the building each day. The on-site network administrator uses a desktop machine for server administration
• The ground floor is to be a collection of 20 open-plan ‘hot desks’ where employees who choose to come into work can go to any desk, plug their laptop into the cabled network and begin working.

Remote Working Requirements

To facilitate working from home the company wants the following:

• Each employee is to be issued with a company laptop
• The laptop will contain a software firewall, as well as VPN client
• Employees will store company data on the company fileservers
• A high-throughput VPN server will need to be installed and configured to allow secure connectivity for all remote working employees
• The security model of all company data must be preserved
• All office software must be accessed using a cloud-based delivery model, e.g. Google Docs, Office 365
• Each employee is to be based in mainland UK.

SBP also wants to explore moving the company data located on the fileserver to a cloud-based offering such as SharePoint or Google Workspace, but they are also happy to maintain a fileserver within the data centre if necessary.

Network Requirements

The SBP network requirements are that:

• the data centre can handle high-volume traffic of data from inside and outside the organisation
• the ground and middle floors have a mixture of wired and wireless connectivity
• all Publishing Teams are isolated from each other
• there is proper consideration given to network security to minimise a data breach
• a firewall will need to be installed and configured to allow inbound and outbound traffic
• there is no lag of data traffic between floors and no connectivity ‘dead spots’
• any data sent to a cloud server or stored on the RPS server is encrypted
• there are robust backup facilities in place for the SBP data in case of a data loss or security breach
• the current network security model for teams and employees is preserved even though employees are working from home.

The SBP CEO and Senior Network Administrator has asked you to design and build a virtual network solution that will fulfill the company requirements. This will help SBP to identify any potential issues in the requirements before spending money on closing a building and reorganising the remaining building layout and employee requirements.

In addition, SPB wants you to create a presentation for them, showing the range of available networking topologies, protocols, hardware and software, to demonstrate that you have the breadth of knowledge available to you before you begin the design task.

*SBP Ltd is not a real company. A real or fictitious company can be chosen to meet local assessment needs.

Assignment activity and guidance

Presentation into network principles and protocols

Produce a formal presentation (with supporting notes) for the CEO and Senior Network Administrator of SBP Ltd that explains the core principles of networks and networking protocols. The presentation will also include a discussion of the range of network hardware and software available to the systems developer.

Your presentation should include:

• a discussion of the benefits and constraints of different network types, e.g. wired, wireless, hybrid
• a discussion of the benefits and constraints of different network standards, e.g. OSI, TCP/IP, 802.x
• an explanation of the impact of network topology, communication and bandwidth requirements, identifying the advantages and disadvantages of each to a network design
• an assessment of common networking principles and how network protocols, e.g. IPv4, IPv6, HTTPS, can enable an effective networked system
• a discussion of the operating principles of networking devices and network server types, e.g. routers, switches, firewalls, repeaters, bridges, IoT gateways, domain, web, file and database servers, access permissions
• a discussion of how workstation hardware and the relevant networking software depend on each other.

Network solution design

You are required to design a networked solution for the requirements specified by SBP Ltd. You should make use of whichever design tools and techniques are most appropriate for your network and for the nature of the networked solution. You should produce your evidence as an implementation plan.

Your implementation plan should include the following:

• The design of the network, including any networking hardware, software, network addresses and devices and users, including any network sub domains as well as the physical location of these devices within the organisation
• Any device configuration and security considerations should be included
• The design of a maintenance schedule to support the networked system
• A test plan covering all areas of the networked system requirements, indicating the test action, test data and expected results
• Feedback from a range of users on the effectiveness of the solution design
• An analysis of the user feedback with the aim of optimising the design and improving the efficiency of the networked solution
• A clear explanation of how the network designs have been optimised and improved
• An explanation of the range of network server types available required by the SBP scenario and a recommended selection
• A justification of the recommended server selection, with specific focus on cost and performance optimisation.

Virtual network implementation

You are required to implement a virtual networked solution for the requirements specified by SBP Ltd. You should make use of whichever virtual network simulator is most appropriate for your optimised network design and for the nature of the networked solution. You should produce your evidence as a technical report.

Your report should include:

• clear evidence for the implementation of the optimised design, for example screenshots, configuration files, annotated and verified demonstration evidence, network monitoring reports
• a test plan implementation, using the test plan designed in Activity 2, clearly documenting the test results against the expected results
• an analysis of the results of the test plan and, based on this, recommendations of potential enhancements for the networked system.

Evaluation report for the network topology, design and implementation

Write an evaluative report for the CEO and Senior Network Administrator of SBP Ltd that provides a reflective overview of the selected topology as well as the network design and implementation.

Your report should include:

• an evaluation of network topology and any protocols selected for the given SBP scenario
• an evaluation of how the topology and protocols demonstrate the efficient use of a networking system
• a critical reflection on the final implemented network and design
• a critical reflection of the decisions made to enhance the network design and the implemented solution.

Learning Outcomes and Assessment Criteria:

• see unit specification for essential content.

Recommended Resources

Textbooks

• Bonaventure, O. (2011) Computer Networking: Principles, Protocols and Practice, The Saylor Foundation, Available here.
• Burgess, M. (2003) Principles of Network and System Administration. 2nd edn. John Wiley and Sons Ltd.
• Donahue, G. A. (2011) Network Warrior. 2nd edn. O’Reilly Media.
• Goransson, P., Black, C., et al. (2016) Software Defined Networks: A Comprehensive Approach. 2nd edn. Morgan Kaufmann.
• Limoncelli, T. and Hogan, C. (2001) The Practice of System and Network Administration. Addison-Wesley.
• Lowe, D. (2005) Networking All-in-One Desk Reference for Dummies. 2nd edn. Hungry Minds Inc.
• Hallberg, B. (2005) Networking: A Beginner’s Guide. 4th edn. Osborne/McGraw-Hill US.
• Olifer, N. and Olifer, V. (2005) Computer Networks: Principles, Technologies and Protocols for Network Design. John Wiley and Sons Ltd.
• Stallings, W. (2003) Data and Computer Communications. 7th edn. Prentice Hall.
• Tanenbaum, A. (2002) Computer Networks. Prentice Hall PTR.

Journals

• Agyemang, J., Kponyo, J. and Klogo, G., 2022. The State of Wireless Routers as Gateways for Internet of Things (IoT) Devices. Available here.
• Oje, A. (2021) Optimization and analysis of the packet switched network with focus on the 3G network. Available here.
• Tyagi, A. (2020) TCP/IP Protocol Suite. Available here.
• Van der Toorn et al. (2022) Addressing the challenges of modern DNS a comprehensive tutorial. Available here.
• Xu, G. (2021) Research on the Application of the IPv6 Network Protocol. Available here.
• ZHUKOVYTS’KYY, Igor & PAKHOMOVA, Victoria. (2018). Research of token ring network options in automation system of marshalling yard. Available here.

Websites

• Network Devices Explained
• What is a Firewall?
• A global network built for the cloud
• Variable Length Subnet Mask (VLSM) Tutorial
• Networking Guide
• What Is Bandwidth?
• Secure design principles
• IoT Gateway

Virtual Network Simulators

• DNS/DHCP/EMAIL via Packet Tracer
• Simulating a Complex Network in a Virtual Lab
• EVE – The Emulated Virtual Environment
• GNS3 – Network Simulation Software
• Cisco Packet Tracer