System Design: Network Design 1. The Current Office Layout

System design: Network design 1. The current office layout consists of two computers which are not networked. The Manager’s computer is connected to the Internet via a broadband ADSL connection. Design a network for the office that will allow for future expansion of the business.

The Perth Bus Tours operation requires a well-structured local area network (LAN) to facilitate efficient data management, communication, and security as the business expands. The current setup involves two standalone computers, but the future network should encompass all essential office devices, including additional computers, printers, and a central server. This design aims to ensure seamless Internet access, secure data handling, and easy scalability.

Hardware Components

  • Network Switch: Connects multiple devices within the LAN, enabling communication and data transfer between computers, printers, and servers. Estimated cost: $150
  • Wireless Access Points (WAPs): Provides Wi-Fi connectivity throughout the office, supporting mobile devices and future expansion. Estimated cost: $100 each; typically, 2 are recommended for comprehensive coverage, totaling approximately $200.
  • Central Server: Stores shared files, backups, and application data, centralizing data management and enhancing security. Estimated cost: $1,000
  • Network Cables (Ethernet Category 6): Connects devices physically to the network hardware, ensuring reliable data transmission. Approximate cost: $50 per 100 meters; amount depends on office size, estimated 2 reels needed, totaling $100.
  • Network Interface Cards (NICs): Internal hardware for computers to connect to the network; assumed to be integrated into new computers.
  • Wireless Routers: Connects the office network to the broadband ADSL Internet connection, facilitating wired and wireless Internet access. Estimated cost: $150.
  • Printer (Network-capable): Shared printing resources accessible to all network users. Estimated cost: $200.

Software Components

  • Network Operating System (NOS): Software to manage network resources, such as Windows Server or Linux-based solutions. Cost varies; for example, Windows Server licenses start around $600.
  • Antivirus and Anti-malware Software: Protects all network devices from malicious threats. Estimated subscription cost: $200 annually.
  • Firewall Software: Ensures network security by controlling incoming and outgoing traffic. Often included in enterprise security suites, approx. $100.
  • Remote Management and Monitoring Software: Facilitates network oversight and troubleshooting. Cost: $150.
  • Database Management Software (if needed): Manages customer and booking data. Example: MySQL (free), or commercial solutions like Microsoft SQL Server (~$1,000).

Transmission Media

  • Ethernet Cables (Cat 6): For wired connections between computers, server, and switches. Approximately $50 per 100 meters.
  • Wi-Fi Wireless Bandwidth (IEEE 802.11ac or 802.11ax): For wireless access points; transmission depends on standard and environment, supporting speeds up to several Gbps.
  • Fiber Optic Cables (optional, for future expansion): For high-speed backbone connections if the office expands significantly, costs vary based on length but estimated at $1,000 per segment.

Security Measures

  • Password Protection and User Authentication: Strong passwords and user account management to restrict access. Implementation through Active Directory or similar systems.
  • Firewall Implementation: Hardware or software-based firewalls to monitor and block malicious traffic, protecting against external threats.
  • Data Encryption: Encrypt sensitive data stored on the server and transmitted over the network to prevent unauthorized access.
  • Regular Software Updates and Patch Management: Ensures all network devices have the latest security patches to protect against vulnerabilities.

Backup Procedures

  1. Automated Daily Backups: Automatic backups of critical data, including customer databases and transaction records, stored both locally on the server and off-site for disaster recovery.
  2. Off-site Backup Storage: Utilization of cloud storage solutions or physical off-site backups to protect data against physical damage or theft.
  3. Periodic Data Restoration Tests: Regular testing of backup data to verify integrity and ensure quick recovery in case of data loss.

Conclusion

The proposed network design for Perth Bus Tours emphasizes scalability, security, and efficiency to support growing operational needs. Incorporation of modern hardware components—including switches, wireless access points, and a central server—along with robust security measures and reliable backup procedures, will enable the company to manage customer data, bookings, and daily operations seamlessly. Careful selection of software and transmission media ensures high performance and future expansion capabilities, providing a resilient foundation for ongoing business development.

References

  • Tanenbaum, A. S., & Wetherall, D. J. (2011). Computer Networks (5th ed.). Pearson.
  • Stallings, W. (2017). Data and Computer Communications (10th ed.). Pearson.
  • Odom, W. (2020). CCNA 200-301 Official Cert Guide. Cisco Press.
  • Cisco Systems. (2023). Network Security Best Practices. Cisco White Paper.
  • Microsoft. (2023). Windows Server 2022 Documentation. Microsoft Docs.
  • Schneider, G. P. (2019). Information Security Management Handbook (8th ed.). CRC Press.
  • Bellis, M. (2022). Ethernet Standards and Protocols. TechTarget.
  • Pakdel, S., & Hashemipour, M. (2018). Designing scalable wireless networks for business environments. Journal of Network and Computer Applications, 114, 1-11.
  • Gonzalez, A., & Garcia, P. (2021). Network Backup Strategies for Small and Medium Businesses. Journal of Cybersecurity, 7(3), 45-52.
  • Amazon Web Services. (2023). Cloud Backup and Data Recovery Solutions. AWS White Paper.

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