⭐ UNIT – 3 (Easy Notes + PDF References) Wireless LAN • MAC Problems • Hidden/Exposed Terminal • Near/Far • Infrastructure vs Ad-hoc • IEEE 802.11 • Mobile IP • Ad-hoc Routing I have rewritten everything in easy school-level English so you can understand quickly. π΅ 1. What is WLAN? (Wireless LAN) (Page 1 U-3 Wireless & mobile computing ) WLAN = Wireless Local Area Network. It allows devices to connect without cables using radio, infrared, or microwave signals. Why WLAN? ✔ No wires needed ✔ Quick installation ✔ Can attach to existing wired network ✔ Useful in disasters or old buildings where wiring is impossible π΅ 2. Design Goals of WLAN (Page 2–3 – Table shown in PDF U-3 Wireless & mobile computing ) ✔ Simple to use Users should easily connect. ✔ Low power use Mobile devices need long battery life. ✔ No license needed Using license-free bands reduces cost. ✔ Handle interference There is a lot of radio noise; WLAN must work even in interference. ...
UNIT–5 (Simplified & Easy Notes) Software Architecture Documentation ✅ What is Software Architecture Documentation? It explains how the software system is structured . Helps developers understand system components , modules , and design , without reading code. Works as a communication tool between architect, developer & stakeholder. ⭐ Goals of Documentation (Very Important) Knowledge Sharing Helps new developers understand the system quickly. Communication Architects share design ideas with developers. Analysis & Review Used to check if architecture meets requirements. ⭐ Two Ways to Create Architecture 1. Top-Down Approach Start from big design → break into smaller parts. Used when system requirements are clear. 2. Bottom-Up Approach Start from small components → combine to form system. Used when building systems step-by-step. ⭐ Principles of Sound Documentation (Super Important – Exam Repeated) Princ...
UNIT-I: Innovation – Basic Definition and Classification 1. Innovation Easy Meaning Innovation means introducing a new idea, product, service, process, or method that creates value and improves business performance. Example Online shopping apps Digital payment systems Electric vehicles Definition Innovation is the process of converting creative ideas into useful products, services, processes, or business models that create value. 2. Classification of Innovation Innovation can be classified into four major types: A. Product Innovation Development of a new product or significant improvement in an existing product. Example Smartphones with AI features Electric cars Benefits Better customer satisfaction Increased sales Definition Product innovation refers to the introduction of new or significantly improved goods or services. B. Process Innovation Improvement in production or delivery methods. Example Automated manufacturing Online order ...
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