Mes: noviembre 2024

1. Networking Fundamentals 🛠️
Key Topics:
OSI Model
TCP/IP Model
Networking Devices (Routers, Switches, Hubs, Bridges)
2. Network Protocols 📡
Core Protocols: TCP, UDP, IP
Application Layer Protocols: HTTP, HTTPS, FTP, DNS, DHCP
Additional Protocols: SNMP, ICMP, ARP
3. Routing and Switching 🔄
Routing Protocols: OSPF, EIGRP, BGP
Switching Concepts: VLANs, STP, Trunking
Routing Concepts: Dynamic Routing vs Static Routing
4. Network Design and Architecture 🏗️
Network Topologies: Star, Mesh, Bus, Ring
Design Principles: Redundancy, Scalability, Reliability
Network Types: LAN, WAN, MAN, WLAN, VLAN
5. Network Security 🔒
Key Areas:
Firewalls
VPNs
ACLs
Security Protocols: SSL/TLS, IPSec
Best Practices for Network Security
6. Wireless Networking 📶
Wireless Standards: IEEE 802.11 a/b/g/n/ac/ax
Wireless Security: WPA2, WPA3
Wireless Network Design: Coverage, Capacity Planning
7. Cloud Networking ☁️
Cloud Networking Services: VPC, Direct Connect, VPN
Hybrid Cloud Networking: Connecting On-Premises to Cloud
Cloud Providers: AWS, Azure, Google Cloud
8. Network Automation and Scripting ⚙️
Key Focus:
Network Programmability
Automation Techniques
Scripting for Network Management (Python, Bash, PowerShell)
9. Monitoring and Troubleshooting 🧰
Key Tools:
Network Monitoring
Troubleshooting Techniques (Ping, Traceroute, Network Diagrams)
Performance Monitoring (NetFlow, SNMP)
10. Virtualization & Container Networking 📦
Focus Areas:
Virtual Network Functions (NFV)
Software-Defined Networking (SDN)
Container Networking (Docker, Kubernetes Networking)
11. Certifications 🏅
Entry-Level: CompTIA Network+, Cisco CCNA
Professional-Level: Cisco CCNP, Juniper JNCIP
Advanced-Level: Cisco CCIE, VMware VCP-NV

The Backbone of Digital Connectivity 🚀
The Domain Name System (DNS) is the internet’s invisible engine, translating human-readable domain names into machine-understandable IP addresses. This highly efficient system enables seamless web navigation in the background, ensuring smooth connectivity.
DNS Resolution in Action:
Query Initiation: A user enters a domain name, triggering a DNS request from their device.
Recursive Resolver: The request is handled by a recursive DNS resolver, which searches for the IP address associated with the domain.
Root DNS Server: If the resolver doesn’t have the IP cached, it queries a root DNS server for direction to the Top-Level Domain (TLD).
TLD Server: The TLD server points to the Authoritative Name Server that holds the actual IP.
Final Resolution: The Authoritative Server sends the IP address back, allowing the user’s device to connect to the website.
🔑 Why It Matters: DNS optimizes internet traffic, provides caching for speed, enhances redundancy for reliability, and supports load balancing to ensure an efficient user experience.