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Qualification - OTHM Level 6 Diploma In Information Technology
Unit Name - Advanced Computer Networks
Unit Code - R/617/3034
Unit Credits - 20
Unit Level - Level 6
Assignment Title - Advanced Computer Networks
Market Research Assignment - Exploring Buyer Behavior and the Purchase Decision-Making Process: Analyzing Cultural and Personal Influences
Learning Outcome 1: Understand the concepts of servers, clients, and processes.
Answer: Servers, clients, and processes are fundamental components in a networked system. A server is a computer or program that provides a service to another computer program and its user, known as the client. For example, a web server hosts websites, and your browser acts as the client requesting to view those pages. A process is an instance of a computer program that is being executed. In a client-server model, a server can have multiple processes running to handle requests from various clients simultaneously.
Learning Outcome 2: Be able to create a client/server model in a Linux system with User Datagram Protocol (UDP), Transmission Control Protocol (TCP) and Application Layer protocols.
Answer: To create a client-server model in Linux, you need to use socket programming. TCP (Transmission Control Protocol) provides a reliable, connection-oriented service, ensuring that data packets are delivered in the correct order and without loss. This is ideal for applications like file transfers. UDP (User Datagram Protocol), on the other hand, is a connectionless protocol that prioritizes speed over reliability, making it suitable for real-time applications such as video streaming or online gaming. Application Layer protocols, such as HTTP or DNS, define how programs on different machines communicate with each other. You would use a programming language like Python or C to write a server program that listens for connections on a specific port and a client program that connects to that port, utilizing either TCP or UDP for communication.
Learning Outcome 3: Be able to design and configure a secure network for a corporate environment.
Answer: Designing a secure corporate network involves a multi-layered approach to protect against threats. This includes implementing a firewall to control incoming and outgoing network traffic, using Virtual Private Networks (VPNs) to secure remote access, and employing Intrusion Detection Systems (IDS) to monitor for malicious activity. Access control lists (ACLs) on routers and switches are also crucial for restricting who can access specific network resources. Additionally, you would implement strong authentication methods and regular security audits to ensure the network remains protected. The goal is to create a robust security posture that safeguards data integrity, confidentiality, and availability.
Aim: This unit supports learners to develop a critical understanding of relevant and modern concepts in networking technologies within the IT industry. This unit also introduces learners to the detection of threats and vulnerabilities in physical and IT security, and how to manage risks relating to organisational security.
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Case Scenario
Global ISP is a leading high-end systems integrator with a proven background in complex, advanced integrated security systems. Global ISP excels in delivering innovative solutions to complex and technically challenging problems to clients in both the government and commercial sectors. By December 2018, it had over 290,000 customers across the UK. Global ISP is now expanding further and recently they have secured a contract of creating a new technology hub in Huddersfield, UK. You are in charge of a pool of network analysts who will be designing a range of network systems in the project.
Your line manager Alex Wood has asked you to provide upskilling training to this group of analysts. You have the following tasks for your new assignment with the company.
Task 1: You need to create a report that will cover the following:
a. First part of the report covers the concepts of servers, clients, and processes. You will start by, explaining the client and server environment and the communication between clients and servers. Then you will define the terms: Process ID (PID), Parent Process ID (PPID) and ‘init'. The first part will be concluded with a comparison of the operation of parent processes and child processes.
b. Second part of the report covers Linux server basics. Start this section by explaining the features of Linux server configurations. To finish this section you need to explain the concepts of UDP and TCP systems.
c. To conclude the report, critically evaluate Network Security protocols that are relevant to Global ISP. Conclude the report with a critical analyse of the purpose and requirements of a secure network for Global ISP where they face imminent threats from hackers who want to use DDoS attack to bring its services down. Also, as you are aware that Global ISP systems are prone to phishing attacks, you should include concerning issue in your analysis.
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Task 2
All analysts have completed the mandatory academic part of the training and now they are ready to start practical part of their work. You have planned to demonstrate them how to plan, design, setup and configure a secure Linux based network system.
Instructions
a. Build and implement DNS server in Linux using UDP and TCP.
b. Design a secure network for a corporate environment that will protect Global ISP from imminent hacker attacks.
c. Configure Network Security for a secure network in a corporate environment. (Your lab instructor may give you additional security concerning scenarios.)
Learning Outcomes and Assessment Criteria
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Learning Outcomes- The learner will:
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Assessment Criteria- The learner can:
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1. Understand the concepts of servers, clients, and processes.
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Explain client and server environment and the communication between clients and servers.
Define the terms: Process ID (PID), Parent process ID (PPID) and 'init'.
Compare the operation of parent processes and child processes.
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2. Be able to create a client/server model in a Linux system with User Datagram Protocol (UDP), Transmission Control Protocol (TCP) and Application Layer
protocols.
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Explain the features of Linux server configurations.
Explain the concepts of UDP and TCP systems.
Build and implement DNS server in Linux using UDP and TCP.
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3. Be able to design and configure a secure network for a corporate environment.
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Critically evaluate Network Security protocols.
Critically analyse the purpose and requirements of a secure network in a given scenario.
Design a secure network for a corporate environment.
Configure Network Security for a secure network in a corporate environment.
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Assignment Support for Health and Social Care Organizations: Understanding Organizational Functioning and Exploring the Leadership Role within Organizations
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