π°οΈ What Are Satellite Links? βοΈ How Satellite Links Work 𧩠Types of Satellite Links π Applications π Comparison with Other Infrastructure Feature Submarine Cables Terrestrial Fiber Satellite Links Coverage Intercontinental National/regional Global, including remote areas Latency Very low Very low Higher (depends on orbit) Capacity Extremely high Extremely high Lower than fiber/cables Reliability High High Weather/space conditions affect Deployment Undersea cable ships Underground/land routes Launch satellites into orbit
π What Is Terrestrial Fiber? βοΈ Structure & Technology 𧩠Types of Terrestrial Fiber Networks π Global Scale
π’ What Is a Data Center? βοΈ Key Components 𧩠Types of Data Centers π Global Scale π Why They Matter π Summary Sentence βA data center is a secure facility housing server, storage, and networking systems, forming the backbone of cloud computing and global internet services.β
π What Are Submarine Cables? π History βοΈ Structure of Modern Submarine Cables A typical crossβsection includes: π’ Deployment π Global Scale
π What Is Domain Registration? 𧩠Governance & Hierarchy π Domain Name Space π Reserved Domains Certain domains are reserved and cannot be registered:
π IP Address Allocation 1. Definition IP address allocation is the hierarchical infrastructure process of distributing unique numerical identifiers (IP addresses) to networks and devices, ensuring that data can be correctly routed across the global internet. 2. IP Address Space 3. Global Governance 4. Allocation Hierarchy IANA (Internet Assigned Numbers Authority) RIRs (Regional Internet Registries) ISPs / Telecom Providers / Enterprises End Networks / Users This hierarchy ensures global uniqueness and efficient routing. 5. Who Gets the IPs? 6. Why Itβs Infrastructure π Public IP Addresses π Private IP Addresses π Reserved IP Addresses π Summary Table Category Routable on Internet Example Range / Address Purpose Quantity (approx.) Public IP Yes 8.8.8.8 Global communication ~3.7 billion usable (out of 4.3...
π What Is a Service Provider? 𧩠Internet Service Provider (ISP) π Telecom Service Provider βοΈ How They Work
π₯ What Is a Firewall? 𧩠Types of Firewalls βοΈ How Firewalls Work
A VPN (Virtual Private Network) encrypts all your internet traffic and routes it through a secure server, while a Proxy simply acts as an intermediary server that hides your IP address but does not encrypt your data. VPNs provide stronger privacy and security, whereas proxies are lighter and mainly used for location spoofing or bypassing restrictions. π VPN (Virtual Private Network) π Proxy Server π VPN vs Proxy Comparison Feature VPN Proxy Encryption Yes, full traffic encrypted No encryption IP Masking Yes Yes Scope Entire device traffic Specific apps/websites only Security High (protects against hackers/ISP) Low (traffic visible to ISP/hackers) Speed Slightly slower (due to encryption) Faster, but less secure Cost Usually paid Often free or cheaper
π¦ What Is a Computer Virus? π¦ Malware Common Types of Malware 𧩠Virus Common Types of Viruses π‘οΈ What Is Antivirus? 𧩠Types of Threats Antivirus Protects Against βοΈ How Antivirus Works π Relationship Between Virus and Antivirus
π What Is Encryption? 𧩠Types of Encryptions π Password Encryption (Process) When we talk about passwords, encryption or hashing is critical for security. Hereβs the stepβbyβstep process: βοΈ Where Encryption Is Used π Benefits
π₯οΈ Desktop Application π» Desktop App Development 1. Approaches 2. Core Components βοΈ Development Process π Tools & Languages
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