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network fundamentals

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Raymond Ops
Raymond Ops
May 30, 2025 · Fundamentals

Mastering Network Fundamentals: OSI Model, TCP/IP Layers & Data Encapsulation

This article introduces core networking concepts, explaining what a network is, its classifications, the OSI seven‑layer model and its relation to TCP/IP, common protocols with their port numbers, and the processes of data encapsulation and decapsulation across each layer.

NetworkingOSI modelTCP/IP
0 likes · 5 min read
Mastering Network Fundamentals: OSI Model, TCP/IP Layers & Data Encapsulation
Architects' Tech Alliance
Architects' Tech Alliance
Jan 7, 2025 · Fundamentals

Fundamentals of Computer Networks: Definitions, Classifications, and Topologies

This article introduces the basic concepts of computer networks—including definitions, components, classifications, OSI/TCP‑IP models, and common topologies—while also offering a collection of downloadable resources and links to related technical articles and promotional material for a comprehensive architecture knowledge pack.

Computer NetworksNetwork TopologyOSI model
0 likes · 5 min read
Fundamentals of Computer Networks: Definitions, Classifications, and Topologies
Efficient Ops
Efficient Ops
Dec 15, 2024 · Fundamentals

Unlocking Network Basics: How VLANs, Routers, and DNS Shape Modern LANs

This article explains the fundamentals of VLANs, single‑arm routing, layer‑3 switches, gateways, DNS, MAC addresses, and subnet masks, using clear analogies and examples to show how network segmentation and routing enable efficient communication within and between local networks.

DNSMAC addressVLAN
0 likes · 11 min read
Unlocking Network Basics: How VLANs, Routers, and DNS Shape Modern LANs
Architects' Tech Alliance
Architects' Tech Alliance
Sep 10, 2024 · Fundamentals

Understanding Layer 2 and Layer 3 Switches, VLANs, and ARP

This article explains the differences between Layer 2 and Layer 3 switches, how ARP resolves MAC addresses, the impact of collisions and broadcast domains, and how VLANs and switch port configurations can be used to segment and secure modern Ethernet networks.

ARPLayer 2 SwitchLayer 3 Switch
0 likes · 14 min read
Understanding Layer 2 and Layer 3 Switches, VLANs, and ARP
Efficient Ops
Efficient Ops
Sep 18, 2023 · Fundamentals

Understanding VLANs, Routing, and Core Network Concepts: A Beginner’s Guide

This article explains VLAN fundamentals, how single‑arm routing and layer‑3 switches enable inter‑VLAN communication, the role of gateways, DNS resolution, MAC addresses, and subnet masks, using clear analogies and diagrams to help readers grasp essential networking concepts.

DNSMAC addressVLAN
0 likes · 11 min read
Understanding VLANs, Routing, and Core Network Concepts: A Beginner’s Guide
IT Services Circle
IT Services Circle
Jan 30, 2023 · Fundamentals

Understanding NAT, NAPT, and How Private IPs Communicate with the Public Internet

This article explains why home networks use private 192.168.x.x addresses, how NAT devices translate private to public IPs, the roles of SNAT and DNAT, the extension to NAPT with port translation, and techniques such as NAT traversal and hole punching that enable inbound connections from the Internet.

IPNATNAT Traversal
0 likes · 15 min read
Understanding NAT, NAPT, and How Private IPs Communicate with the Public Internet
Architects' Tech Alliance
Architects' Tech Alliance
Nov 27, 2022 · Fundamentals

Fundamentals of Computer Networks: Concepts, Models, and Protocols

This article provides a comprehensive overview of computer networking fundamentals, covering the definition of communication networks, the evolution and main characteristics of computer networks, LAN/MAN/WAN classifications, common topologies, circuit and packet switching, performance metrics, OSI and TCP/IP models, and the functions of each protocol layer.

Computer NetworksOSI modelTCP/IP
0 likes · 16 min read
Fundamentals of Computer Networks: Concepts, Models, and Protocols
Architect's Guide
Architect's Guide
Sep 7, 2022 · Fundamentals

Understanding TCP Connection Limits: Theory, Port Numbers, and Practical Constraints

The article explains how TCP connections are identified by a four‑tuple, why the theoretical maximum of 65,535 client ports does not cap server concurrency, and how real‑world limits are governed by memory, file‑descriptor counts, and port reuse techniques.

Port NumbersServer ScalabilityTCP
0 likes · 11 min read
Understanding TCP Connection Limits: Theory, Port Numbers, and Practical Constraints
Efficient Ops
Efficient Ops
Jun 13, 2022 · Fundamentals

Unveiling TCP: How Reliable Transport Works and Why It Matters

This comprehensive guide walks through the fundamentals of computer networking, detailing the OSI layers, the inner workings of TCP and UDP, reliable transmission techniques such as stop‑and‑wait, sliding windows, congestion control, connection setup and teardown, as well as security concerns, performance trade‑offs, and practical use‑case scenarios.

Reliable TransmissionTCPUDP
0 likes · 26 min read
Unveiling TCP: How Reliable Transport Works and Why It Matters
Architects' Tech Alliance
Architects' Tech Alliance
Jun 2, 2022 · Fundamentals

Understanding Layer 2 and Layer 3 Switches: Features, VLANs, and Configuration

This article explains the operating principles, key differences, and practical applications of Layer 2 and Layer 3 switches, covering MAC‑based forwarding, IP routing, ARP learning, broadcast domains, VLAN segmentation, and step‑by‑step configuration commands for enterprise networks.

ARPLayer2 SwitchLayer3 Switch
0 likes · 15 min read
Understanding Layer 2 and Layer 3 Switches: Features, VLANs, and Configuration
Python Programming Learning Circle
Python Programming Learning Circle
May 16, 2022 · Information Security

How IP Geolocation Works and Its Privacy Implications

This article explains the technical principles behind IP‑based geolocation, describing how autonomous systems map IP addresses to approximate locations, the limits of accuracy, and the privacy concerns arising from both network operators and large‑scale data services.

Autonomous SystemIP Geolocationinformation security
0 likes · 7 min read
How IP Geolocation Works and Its Privacy Implications
IT Services Circle
IT Services Circle
May 16, 2022 · Information Security

How IP Addresses Reveal Geographic Locations and Their Privacy Implications

The article explains the technical principles behind IP geolocation using autonomous systems, describes how IP addresses can be mapped to regions and organizations, discusses the limits of precision, and highlights privacy concerns and potential misuse of location data in the modern digital era.

Autonomous SystemIP Geolocationinformation security
0 likes · 8 min read
How IP Addresses Reveal Geographic Locations and Their Privacy Implications
IT Architects Alliance
IT Architects Alliance
Apr 5, 2022 · Fundamentals

Comprehensive Overview of Computer Networks: Layers, Protocols, and Key Concepts

This article provides a thorough introduction to computer networking, covering the classification of networks, the OSI and TCP/IP layer models, physical, data link, network, transport, and application layer protocols such as Ethernet, IP, TCP, UDP, DNS, and related concepts like routing, NAT, and error detection.

Computer NetworksNetworking ProtocolsOSI model
0 likes · 19 min read
Comprehensive Overview of Computer Networks: Layers, Protocols, and Key Concepts
Architects' Tech Alliance
Architects' Tech Alliance
Feb 4, 2022 · Fundamentals

Fundamentals of Computer Networks: OSI Model, TCP/IP Stack, and Network Layers

This article provides a comprehensive overview of computer networking fundamentals, covering the definition of communication networks, evolution, key characteristics, LAN/MAN/WAN distinctions, common topologies, switching methods, performance metrics, standardization bodies, the OSI and TCP/IP models, and the functions of each protocol layer.

Computer NetworksOSI modelTCP/IP
0 likes · 14 min read
Fundamentals of Computer Networks: OSI Model, TCP/IP Stack, and Network Layers
Sanyou's Java Diary
Sanyou's Java Diary
Feb 1, 2022 · Fundamentals

Understanding TCP: ACKs, Retransmission, Three‑Way Handshake & Four‑Way Termination

This article explains TCP's core mechanisms—including acknowledgment (ACK), timeout retransmission, the three‑way handshake for establishing connections, and the four‑way handshake for graceful termination—while illustrating each concept with diagrams and addressing common interview questions.

AckRetransmissionTCP
0 likes · 12 min read
Understanding TCP: ACKs, Retransmission, Three‑Way Handshake & Four‑Way Termination
JD Tech
JD Tech
Nov 29, 2021 · Fundamentals

Four‑Tier Load Balancer (FLB): Topology, NAT Model, and Direct Route Model

The article explains four‑tier load balancer fundamentals, detailing its OSI‑layer‑4 topology, then derives and compares the NAT and Direct Route (DR) models, highlighting their mechanisms, advantages, drawbacks, and deployment constraints, with illustrative network diagrams.

Direct RouteLoad BalancingNAT
0 likes · 6 min read
Four‑Tier Load Balancer (FLB): Topology, NAT Model, and Direct Route Model
Architects' Tech Alliance
Architects' Tech Alliance
Nov 23, 2021 · Fundamentals

Fundamentals of Computer Networks: OSI Model, TCP/IP Stack, and Network Layer Functions

This article provides a comprehensive overview of computer networking fundamentals, covering the evolution of networks, definitions of LAN, MAN, WAN, common topologies, circuit and packet switching, OSI reference model, TCP/IP stack, and the functions of each network layer.

Computer NetworksOSI modelTCP/IP
0 likes · 16 min read
Fundamentals of Computer Networks: OSI Model, TCP/IP Stack, and Network Layer Functions
Efficient Ops
Efficient Ops
Oct 10, 2021 · Fundamentals

Why BGP Matters: From Basics to Cloud Routing Explained

This article introduces the Border Gateway Protocol (BGP), explains its role as the core decentralized routing protocol of the Internet, compares it with IGP and EGP, describes why and when BGP is needed in cloud environments, and details its TCP‑based operation, message types, and path‑vector mechanics.

BGPCloud NetworkingTCP
0 likes · 12 min read
Why BGP Matters: From Basics to Cloud Routing Explained