Cloud Basics, QOS, VPN

📘 Day 24 Overview: Cloud Basics, QoS & VPN
This lesson introduces cloud computing fundamentals, traffic prioritization techniques, and secure remote access — key pillars of modern networking.

🧠 What You’ll Learn Today
🔹 Cloud Basics
Definition: On-demand access to computing resources via the internet
Types:
Public, Private, Hybrid
Services:
IaaS, PaaS, SaaS
Benefits: Scalability, cost-efficiency, flexibility
🔹 QoS (Quality of Service)
Prioritizes network traffic based on type and importance
Ensures performance for voice, video, and critical apps
Techniques:
Classification, Marking, Queuing, Policing
Example:
class-map VOICE
match protocol rtp
policy-map PRIORITY
class VOICE
priority percent 30


🔹 VPN (Virtual Private Network)
Creates secure, encrypted tunnels over public networks
Types:
Site-to-Site
Remote Access
Protocols:
IPsec, SSL, GRE
Benefits: Privacy, remote access, data protection

🔗 Why This Matters
Cloud services power modern infrastructure. QoS ensures smooth performance. VPNs secure remote connectivity. Together, they form the backbone of scalable, secure, and efficient networks — essential for CCNA and enterprise environments.
Aap chaho to main ek Cloud service model diagram ya QoS flowchart bhi design kar sakta hoon. Agla thumbnail banayein?