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Dynamic Host Configuration Protocol (DHCP)

Dynamic Host Configuration Protocol (DHCP)

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Dynamic Host Configuration Protocol (DHCP) is a crucial network protocol designed to automatically assign IP addresses and other necessary network configuration details to devices connected to a network. This eliminates the need for manually configuring network settings for each device, making it significantly easier to manage and scale large networks. Key Components of DHCP DHCP Server DHCP Client DHCP Lease IP Address Pool DHCP Process DHCP Discover: When a device joins a network, it broadcasts a DHCP Discover message to…

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Understanding Network Address Translation (NAT)

Understanding Network Address Translation (NAT)

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Network Address Translation (NAT) is a method used to map private IP addresses to a single public IP address. It allows multiple devices in a local network to access the internet using a shared public IP. But before exploring the NAT, Let’s see what is private and public network addresses. You can visit the detailed tutorial here. Private IP Addresses in Networking In networking, private addresses are reserved IP addresses that are not routable on the public internet. They are…

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Overview of Wireless LANs

Overview of Wireless LANs

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Wireless Local Area Networks (WLANs) are a type of network that allows devices to connect and communicate without the need for physical cables. Unlike traditional wired networks, WLANs use radio waves to transmit data between devices. This wireless approach provides increased flexibility and mobility for connected devices. Frequency BandsWLANs operate within two main frequency bands: 2.4 GHz and 5 GHz. The 2.4 GHz band, though more crowded, offers a better range, making it suitable for environments with obstacles. On the…

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Testing in Software Engineering

Testing in Software Engineering

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Testing in Software Engineering is the systematic process of evaluating a system or application to identify defects and ensure that it meets specified requirements. Its significance lies in quality assurance, defect identification, and the overall enhancement of user satisfaction. Attributes of Testing Accuracy: Ensuring that the software consistently produces accurate results is fundamental to testing. Precision in execution is crucial for reliable outcomes. Reliability: The reliability of a system is measured by its consistency in delivering correct results under varying…

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World Wide Web (WWW) and Hypertext Transfer Protocol (HTTP)

World Wide Web (WWW) and Hypertext Transfer Protocol (HTTP)

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Understanding the WWW?The World Wide Web, commonly known as the WWW or simply the Web, is a system of interlinked hypertext documents and multimedia content that is accessed via the Internet. It was invented by Sir Tim Berners-Lee in 1989. How does it work?The WWW operates based on hypertext, where documents (web pages) are linked together using hyperlinks. These hyperlinks allow users to navigate between documents by clicking on links, creating a vast and interconnected network of information. Understanding the…

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Activity: Routing Configuration in Packet Tracer

Activity: Routing Configuration in Packet Tracer

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Open the Packet Tracer and drag the devices to the working sheet as shown in the figure below. Assign the IP address to every device as shown in the figure. Figure: PC ip seating Assign IP addresses to the interfaces of your routers. Use the config terminal command on each router to enter global configuration mode, then use the interface [interface_type] [interface_number] command to access the interface configuration mode. Finally, assign the IP address using the ip address [ip_address] [subnet_mask]…

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Design Pattern in Software Engineering

Design Pattern in Software Engineering

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Back in 1994, Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides collectively authored the groundbreaking book “Design Patterns – Elements of Reusable Object-Oriented Software,” marking the inception of the concept of design patterns in software development. Software design patterns are like blueprints for solving common problems in software development. They provide general reusable solutions to recurring design problems, making your code more flexible, modular, and easier to understand. Types of Design Patterns As per the design pattern reference book Design…

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Comprehensive Tutorial on UML Diagrams in Software Engineering

Comprehensive Tutorial on UML Diagrams in Software Engineering

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Unified Modeling Language (UML) serves as a standardized visual representation for modeling the structure and behaviour of software systems. It offers a common language for communication among software engineers, designers, and stakeholders, facilitating a shared understanding of complex system designs. In this tutorial, we will explore the major types of UML diagrams and their specific applications in software engineering. UML – Building Blocks  The building blocks of UML can be defined as − Things Things are the most important building blocks…

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Introduction to Routing in Computer Networks

Introduction to Routing in Computer Networks

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Routing is an important function in computer networking that involves directing data packets from one device to another across a network. It ensures that information reaches its destination efficiently and accurately. Routers are the key devices responsible for making routing decisions in a network. A detailed tutorial can be found here. Routing is divided into two categories. Understanding Static Routing Static routing is a routing method where network administrators manually configure the routing table on a router. In this approach,…

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Lab Activity: Switch | VLAN Configuration in Cisco Packet Tracer

Lab Activity: Switch | VLAN Configuration in Cisco Packet Tracer

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The objective of this lab activity is to familiarize students with the basic configuration of a Cisco switch using Cisco Packet Tracer. Students will learn essential switch configuration commands and understand how to set up and manage switch interfaces. Additionally, they will learn how to configure VLANs on packet tracers. Learn more about physical and virtual LANs. Equipment and Software Requirements Topology Setup Basic Switch Configuration Access the Cisco switch CLI or use the graphical interface in Packet Tracer. Configure…

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