Mr IT&Networking

26/08/2026

🌐 Types of IP Versions | IPv4 vs IPv6
Understanding IP addressing is a fundamental part of networking and CCNA. IPv4 uses 32-bit addresses, while IPv6 uses 128-bit addresses, providing a much larger address space for modern networks.
📘 Learn the fundamentals. Build strong networking skills.
MR IT Networking — Learn • Practice • Connect

26/08/2026

🌐 Common Networking Abbreviations Every Network Engineer Should Know!

From IP, DNS, DHCP and MAC to BGP, OSPF, STP, VLAN, NAT, VPN and QoS — networking is full of abbreviations that can be confusing when you’re starting out.

This quick-reference infographic covers some of the most commonly used networking terms and their meanings, making it useful for CCNA/CCNP students, network engineers, IT professionals, and anyone learning computer networking. 💻🔧

📌 Save this for your networking study sessions!
📚 Learn the basics. Master the terminology. Build stronger networking skills.

26/08/2026

🚀 Router-on-a-Stick Explained!

How can a single physical router interface handle traffic for multiple VLANs? 🤔

Router-on-a-Stick uses 802.1Q trunking and router subinterfaces to provide inter-VLAN routing over one physical link.

🔹 VLAN 10 – Users → 192.168.10.1
🔹 VLAN 20 – Servers → 192.168.20.1
🔹 VLAN 30 – Voice → 192.168.30.1
🔹 VLAN 40 – Management

The router uses subinterfaces such as G0/0.10, G0/0.20, and G0/0.30, while the switch-to-router connection operates as an 802.1Q trunk.

💡 Key takeaway: One physical link + multiple VLANs = simple and cost-effective inter-VLAN routing.
Perfect concept to understand for CCNA, network labs, and real-world networking.

26/08/2026

Ready to get certified but feeling overwhelmed by the scope? We simplified the official CCNA (200-301) objectives. Think of this curriculum like building a tree: you must first establish strong roots in Network Fundamentals (20%), move up through critical trunk protocols like Network Access and IP Connectivity, protect the whole system with Security, and finally top it off with Automation & Programmability. Take it one branch at a time.

26/08/2026

Types of Topology ⚡🚀

26/08/2026

26/08/2026

Firewall vs EDR vs NDR vs XDR vs MDR - The Cybersecurity Defense Stack

26/08/2026

SC, LC, FC or ST — which connector do you see most often in your network, and what equipment is it connected to❓

Which connector would you choose for a high-density data center — SC or LC, and why❓🤔🤔

25/08/2026

🚀 Master OSPF LSA Types with Ease!

Link-State Advertisements (LSAs) are the foundation of OSPF, enabling routers to exchange topology information and build a complete link-state database. This infographic explains the most important LSA types—Type 1 (Router), Type 2 (Network), Type 3 (Summary), Type 4 (ASBR Summary), Type 5 (AS External), Type 7 (NSSA), and Type 9 (Opaque)—along with their purpose, origin, and flooding scope.

Whether you're studying for CCNA, CCNP, or troubleshooting enterprise OSPF networks, understanding LSAs is essential for mastering route propagation and OSPF design.

💬 Question: Which OSPF LSA type do you find the most challenging to understand—Type 3, Type 5, or Type 7?

25/08/2026

‎🔷 PAgP vs LACP — CCNA Essential
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‎Both are used with EtherChannel, but there’s one key difference to remember:
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‎🔹 PAgP → Cisco proprietary
‎🔹 LACP → IEEE open standard
‎🔹 PAgP Modes → Auto & Desirable
‎🔹 LACP Modes → Active & Passive
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‎📌 CCNA Tip: If the question asks, “Which EtherChannel protocol is an open standard?” → LACP ✅
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‎📚 Learn networking concepts with Mr IT Networking