Information Technology
Free IT study notes for JAIIB, CAIIB and bank IT-officer exams — databases and SQL, computer networks, cybersecurity, cloud computing, AI and emerging technology, explained simply.
-
Types of Transmission Media (Wired and Wireless)
1. Overview 2. Wired (Guided) Media Type Description Use Cases Key Features Twisted Pair Two copper wires twisted to reduce interference. LAN…
-
Simplex, Half-Duplex, and Full-Duplex Communication
Computer Networks · Data Communication · Exam Notes Simplex, Half-Duplex & Full-Duplex Communication Exam-focused notes on transmission modes for SSC, Banking (IBPS/SBI),…
-
Sales And Marketing
Lead Generation Strategies Other Marketing Tools and Techniques Customer Data Management Sales Funnel Process MCQ 1. Lead Generation and Marketing Strategies Q1.…
-
Functions and uses of routers, switches, hubs, bridges, and gateways
Computer Networks · Exam Notes Routers, Switches, Hubs, Bridges & Gateways Exam-focused notes on network devices for SSC, Banking (IBPS/SBI), Railway, UPSC,…
-
Subnetting and supernetting
Subnetting & Supernetting – Complete Exam Guide 2025 | SSC, IBPS, UPSC, Railway 🌐 Networking · Competitive Exam 2025 Subnetting & SupernettingComplete…
-
Software Engineering
Software Engineering – Complete Exam Guide 2025 | SDLC, Agile, Testing, DevOps 💻 Computer Science · Competitive Exam 2025 Software EngineeringComplete Exam…
-
Operating System
Operating System – Complete Study Notes (Exam Edition) Operating System — Complete Study Notes Simple, exam-focused notes for SSC, Banking (IBPS/SBI/RBI), Railway…
-
Web Development
📘 HTML 💡 What is HTML? Tiny Text Diagram 👉 One-line formula:HTML = Structure of Web Page (skeleton)CSS = DesignJavaScript = Behaviour…
-
Artificial Intelligence (AI)
🧠 Artificial Intelligence (AI) — Complete Study Guide Your Ultimate Resource for Competitive Exam Preparation — UPSC, SSC, Banking, Railway & More…
-
IoT, AR & VR: A Beginner’s Guide
🧠 1. What is IoT? Internet of Things (IoT) means connecting everyday physical devices (like sensors, vehicles, ATMs, smartwatches, or appliances) to…
-
Quantum Computing
Quantum Computing – Complete Exam Guide 2025 | UPSC, SSC, IBPS, RBI, NDA ⚛️ Emerging Technology · Competitive Exam 2025 Quantum ComputingComplete…
-
IPv4 and IPv6 Addressing
IPv4 and IPv6 Addressing — Notes, Classes, Ports & MCQs | GyanDesk Computer Networks · Exam Notes IPv4 and IPv6 Addressing —…
-
The Difference Between OLTP and OLAP: A Beginner’s Guide
🔹 What is OLAP? 🔹 Main OLAP Operations 1. Roll-up (Zoom Out) 2. Drill-down (Zoom In) 3. Slice (One Filter) 4. Dice…
-
SQL Injection Prevention Techniques
1. What is SQL Injection? Example Attack: 👉 Always true, so attacker logs in without password! 2. Prevention Techniques ✅ 1. Prepared…
-
ER Model in DBMS – Entities, Attributes, Relationships
ER Model in DBMS – Entities, Attributes, Relationships Complete Guide 2025 | GATE, IBPS 🗄️ Database Management · DBMS Exam 2025 ER…
-
Transaction Concepts – Commit, Rollback, Savepoint
🏦 Transaction Concepts 1. What is a Transaction? 👉 A transaction = a group of tasks that must succeed together or fail…
-
Functional Dependencies in DBMS
1. What is Functional Dependency (FD)? 👉 A relationship where one column (or set of columns) determines another. 2. Key Terms 3.…
-
Normal Forms
Normal Forms & Database Normalization – Complete Exam Guide 2025 | GATE, IBPS, SSC 🗄️ Database Management · Exam 2025 Normal Forms…
-
Subqueries, Aggregate Functions, Group By, Having Clause, and Set Operations
1. Subqueries (Query inside another query) Example: (Employees earning more than average salary) 2. Aggregate Functions (Work on groups of rows) Function…
-
Joins: Inner, Outer, Cross Joins
SQL operations are used to combine rows from two or more tables based on a related column. 1. Inner Join (Matching Pairs…
-
🔒 Information Security Simplified: Your Visual Guide to Protecting Data & Acing
🌟 Core Principles of InfoSec: The CIA Triad Imagine your data is a treasure chest 🏴☠️. Here’s how InfoSec protects it: Principle What…
-
Network Topology Types
Computer Networks · Exam Notes Network Topology Types — Complete Study Notes with MCQs Clear, exam-focused notes on network topology for SSC,…
-
Computer Network Layers, functions, and protocols
Computer Networks · Competitive Exam Guide Network Layers,Functions & Protocols The OSI & TCP/IP models, every layer’s job, key protocols, ports and…
-
Database Management Systems
Home/ Information Technology/ Database Management Systems GyanDesk · IT Learning Track Database Management Systems, from SQL to schema design. A complete DBMS…