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Computer Network Unit 3 Cheat Sheet 🌐 | Network Layer, IP, Routing & Subnetting (AKTU)
Nov 14, 2026 Noah

Layer 3 And Layer 4 Networking

Revise Unit 3 – Computer Network (AKTU) with this cheat sheet πŸ“šβœ¨ βœ” Network Layer Functions βœ” IP Addressing (IPv4 & IPv6) βœ” Subnetting Basics βœ” R...

Revise Unit 3 – Computer Network (AKTU) with this cheat sheet πŸ“šβœ¨ βœ” Network Layer Functions βœ” IP Addressing (IPv4 & IPv6) βœ” Subnetting Basics βœ” Routing & Algorithms βœ” Routing Protocols Perfect for quick revision + exams πŸ’― Save now πŸ“Œ and strengthen your networking concepts πŸš€ #computernetwork #aktu #cheatsheet #btech #engineeringnotes #studygram #revisionnotes #networklayer #ipaddress #routing #students #examready #girlswhocode

πŸ”Œ Types of Network Switches: Which One Does Your Infrastructure Need? A network switch is one of the most important components of a structured IT network. But not every switch is designed for the same requirement. Here’s a quick guide: 1️⃣ Unmanaged Switch Plug-and-play with minimal configuration. Suitable for small networks and basic connectivity requirements. 2️⃣ Managed Switch Provides configuration and monitoring capabilities such as VLANs, QoS and security features. Ideal for enterprise networks. 3️⃣ Layer 2 Switch Works primarily using MAC addresses and is commonly used for communication within a local network. 4️⃣ Layer 3 Switch Adds routing capabilities using IP addresses, making it suitable for larger and more complex network environments. 5️⃣ PoE Switch β€” Power over Ether

Computer Network Unit 3 Cheat Sheet 🌐 | Network Layer, IP, Routing & Subnetting (AKTU)
Computer Network Unit 3 Cheat Sheet 🌐 | Network Layer, IP, Routing & Subnetting (AKTU)

Layer 1 Layer 2 Layer 3 Network

πŸš€ Understanding the OSI Network Layers & Devices! πŸŒπŸ“‘ Learning networking becomes much easier when you understand how each OSI layer works and which devices operate at each layer. This infographic gives a simple and engaging breakdown of the 7 OSI layers with real-world networking devices and functions! πŸ’‘ πŸ“˜ In this guide you’ll learn: βœ… Layer 1 β€” Physical (Ethernet & Fiber Cables) βœ… Layer 2 β€” Data Link (Switching & MAC Forwarding) βœ… Layer 3 β€” Network (Routing Between Networks) βœ… Layer 4 β€” Tr...

πŸ”Œ Layer 2 Switch vs Layer 3 Switch β€” What’s the Difference? Understanding the difference between Layer 2 and Layer 3 switches is fundamental for every network engineer. πŸ”Ή Layer 2 Switch β€’ Operates at the Data Link Layer β€’ Uses MAC addresses to forward frames β€’ Supports VLAN segmentation β€’ Access ports connect end devices β€’ Typically operates within a broadcast domain πŸ”Ή Layer 3 Switch β€’ Operates at the Network Layer β€’ Uses IP addresses for routing β€’ Can perform both Layer 2 switching and La...

the different types of switches are shown in this diagram, with instructions on how to use
the different types of switches are shown in this diagram, with instructions on how to use
the network layer and devices are shown in this diagram
the network layer and devices are shown in this diagram

Layer 3 In Networking

🌐 Networking Fundamentals: Understanding the Core Differences Between Router, Switch, and Firewall As I continue strengthening my knowledge in Computer Networking, I explore three essential components that play a vital role in modern network infrastructure. πŸ”Ή Router – Connecting Networks A router connects different networks and forwards data packets between them. It uses routing protocols such as RIP, OSPF, EIGRP, and BGP to determine the best path for data transmission. πŸ”Ή Switch – Connecting Devices A switch connects multiple devices within a Local Area Network (LAN). It forwards data frames based on MAC addresses and supports efficient communication between connected devices. πŸ”Ή Firewall – Securing Networks A firewall acts as a security barrier between trusted and untrusted networ

the different types of layer switches and how to use them
the different types of layer switches and how to use them
What is L1, L2, L3, and L4 in Networking? (Beginner-Friendly Guide)
What is L1, L2, L3, and L4 in Networking? (Beginner-Friendly Guide)

🌐 Master Networking Layers & Protocols Made Simple! Understanding networking doesn’t have to be complicated. This visual breaks down key protocols across different layersβ€”helping you see how everything connects behind the scenes. From Layer 1 (Physical) to Layer 7 (Application), each layer plays a critical role in how data moves, communicates, and stays secure across networks. πŸ’‘ Whether you’re preparing for CCNA, working in IT, or just getting started, this is a great quick-reference guide...

Layer 2 And Layer 3 Networking

🌐 Network Protocols by Layer – The Foundation of Modern Networking! πŸš€ Every packet you send travels through multiple networking layers, each with its own set of protocols and responsibilities. From HTTP, HTTPS, DNS, and DHCP at the Application Layer to TCP/UDP at the Transport Layer and ICMP, IPsec, MPLS, EIGRP, and BGP at the Network Layer, understanding where each protocol operates is essential for effective troubleshooting and network design. Whether you’re preparing for CCNA, CCNP, or C...

Revise Unit 3 – Computer Network (AKTU) with this cheat sheet πŸ“šβœ¨ βœ” Network Layer Functions βœ” IP Addressing (IPv4 & IPv6) βœ” Subnetting Basics βœ” Routing & Algorithms βœ” Routing Protocols Perfect for quick revision + exams πŸ’― Save now πŸ“Œ and strengthen your networking concepts πŸš€ #computernetwork #aktu #cheatsheet #btech #engineeringnotes #studygram #revisionnotes #networklayer #ipaddress #routing #students #examready #girlswhocode

an info sheet describing the different types of networked devices
an info sheet describing the different types of networked devices
two different types of networked devices are shown in this diagram, and the same is labeled
two different types of networked devices are shown in this diagram, and the same is labeled
two different types of computers are shown in this diagram
two different types of computers are shown in this diagram
the layers and networked devices are labeled in this diagram, which shows different types of computers
the layers and networked devices are labeled in this diagram, which shows different types of computers
the diagram shows how many different types of networking devices are connected to each other in this graphic
the diagram shows how many different types of networking devices are connected to each other in this graphic
Computer Network Unit 3 Cheat Sheet 🌐 | Network Layer, IP, Routing & Subnetting (AKTU)
Computer Network Unit 3 Cheat Sheet 🌐 | Network Layer, IP, Routing & Subnetting (AKTU)
three layer architecture diagram showing the different types of routers and their respective connections to each other
three layer architecture diagram showing the different types of routers and their respective connections to each other
Layer 2 vs Layer 3 Switch
Layer 2 vs Layer 3 Switch
πŸ”Œ Network Switches: Types & Components Explained

A network switch connects devices within a LAN and forwards data based on MAC addresses, enabling efficient communication across workstations, laptops, printers, and VoIP phones.

Key switch types include:
β€’ Unmanaged
β€’ Managed (VLAN & security)
β€’ Layer 2 switching
β€’ Layer 3 routing
β€’ PoE switches

Understanding these technologies helps organizations design reliable and scalable IT infrastructure.

#NetworkSwitch #EnterpriseNetworking #ITInfra...
πŸ”Œ Network Switches: Types & Components Explained A network switch connects devices within a LAN and forwards data based on MAC addresses, enabling efficient communication across workstations, laptops, printers, and VoIP phones. Key switch types include: β€’ Unmanaged β€’ Managed (VLAN & security) β€’ Layer 2 switching β€’ Layer 3 routing β€’ PoE switches Understanding these technologies helps organizations design reliable and scalable IT infrastructure. #NetworkSwitch #EnterpriseNetworking #ITInfra...
the words basic network work are displayed in front of servers with wires attached to them
the words basic network work are displayed in front of servers with wires attached to them

**πŸ—οΈ Understanding the Three-Layer Network Architecture** A well-designed enterprise network follows the **Three-Layer Architecture** to ensure **high performance, scalability, security, and reliability**. This model divides the network into three logical layers, each with a specific responsibility. ### πŸ”Ή 1. Core Layer – The Network Backbone The **Core Layer** is the fastest part of the network. It connects all distribution switches and ensures data travels across the network with minimal ...

Layer 2 vs Layer 3 Switch Do you know the difference between Layer 2 and Layer 3 switches? Layer 2 works with MAC addresses and reduces local traffic, while Layer 3 routes data based on IP addresses with multiple broadcast domains. Each plays a vital role in networking efficiency. Hashtags: #Networking #TechBasics #Layer2 #Layer3 #CyberSecurity

πŸ”Œ Network Switches: Types & Components Explained A network switch connects devices within a LAN and forwards data based on MAC addresses, enabling efficient communication across workstations, laptops, printers, and VoIP phones. Key switch types include: β€’ Unmanaged β€’ Managed (VLAN & security) β€’ Layer 2 switching β€’ Layer 3 routing β€’ PoE switches Understanding these technologies helps organizations design reliable and scalable IT infrastructure. #NetworkSwitch #EnterpriseNetworking #ITInfra...

A strong network starts with the right hardware. From switches and modems to repeaters, every networking device plays an important role in keeping your systems connected, communication smooth, and data moving efficiently. Build a smarter, more reliable network with the right IT solutions from Diskloop. Need networking hardware for your business? Visit: www.diskloop.com #Diskloop #Networking #NetworkHardware #ITHardware #NetworkSolutions #ITSolutions #BusinessIT #Switch #Modem #Repeater #I...

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Computer Network Unit 3 Cheat Sheet 🌐 | Network Layer, IP, Routing & Subnetting (AKTU)
Computer Network Unit 3 Cheat Sheet 🌐 | Network Layer, IP, Routing & Subnetting (AKTU)
the different types of switches are shown in this diagram, with instructions on how to use
the different types of switches are shown in this diagram, with instructions on how to use
the network layer and devices are shown in this diagram
the network layer and devices are shown in this diagram
the different types of layer switches and how to use them
the different types of layer switches and how to use them
What is L1, L2, L3, and L4 in Networking? (Beginner-Friendly Guide)
What is L1, L2, L3, and L4 in Networking? (Beginner-Friendly Guide)
an info sheet describing the different types of networked devices
an info sheet describing the different types of networked devices
two different types of networked devices are shown in this diagram, and the same is labeled
two different types of networked devices are shown in this diagram, and the same is labeled
two different types of computers are shown in this diagram
two different types of computers are shown in this diagram

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