NIELIT O Level Syllabus 2026 — Complete Module-wise Topics

Exam Structure at a Glance

Theory (60 marks): Online MCQ exam at NIELIT centers. Practical (40 marks): Hands-on assignments + viva at your study center. No negative marking — attempt all questions! For detailed exam tips, see our previous year papers analysis.

1. Introduction to Computers — generations, types, block diagram, input/output devices
2. Operating System — Windows, Linux basics, file management, control panel
3. Word Processing — MS Word: formatting, tables, mail merge, macros
4. Spreadsheet — MS Excel: formulas, functions, charts, pivot tables (learn Excel free)
5. Presentation — MS PowerPoint: slides, animations, transitions, master slides
6. Database — MS Access: tables, queries, forms, reports, relationships
7. Internet & Email — browsers, search engines, email, cloud computing basics
8. Computer Networks — LAN, WAN, MAN, topologies, protocols, IP addressing
9. Cyber Security — threats, viruses, firewalls, encryption, safe browsing
10. Digital Financial Services — UPI, NEFT, RTGS, digital wallets, e-commerce

1. HTML5 — tags, attributes, headings, paragraphs, lists, tables, forms, semantic elements
2. CSS3 — selectors, properties, box model, flexbox, grid, responsive design, media queries
3. JavaScript Basics — variables, operators, conditions, loops, functions, DOM manipulation
4. Web Hosting — domain names, hosting types, FTP upload, cPanel basics
5. XML — syntax, DTD, schema, XSLT basics
6. Content Management — WordPress basics, themes, plugins, posts, pages
7. Web Security — HTTPS, SSL, XSS prevention, input validation
8. Responsive Design — mobile-first approach, viewport, breakpoints

1. Python Basics — installation, IDE, variables, data types, operators, input/output (start our free Python tutorial)
2. Control Structures — if/elif/else, for loop, while loop, break, continue, pass
3. Functions — def, parameters, return, default args, *args, **kwargs, lambda
4. Strings — methods, slicing, formatting, regex basics
5. Lists, Tuples, Sets, Dictionaries — CRUD operations, methods, comprehensions
6. File Handling — open, read, write, append, with statement, CSV handling
7. Object-Oriented Programming — classes, objects, inheritance, polymorphism, encapsulation
8. Exception Handling — try, except, finally, raise, custom exceptions
9. Modules & Packages — import, math, random, os, datetime, pip install
10. Database Connectivity — SQLite, MySQL with Python, CRUD operations

1. IoT Introduction — definition, architecture, protocols, applications
2. Sensors & Actuators — types, interfacing, data collection
3. Arduino/Raspberry Pi — basics, GPIO, programming, simple projects
4. IoT Communication — MQTT, HTTP, Bluetooth, WiFi, Zigbee
5. Cloud Platforms — AWS IoT, Google Cloud IoT, ThingSpeak
6. IoT Security — challenges, encryption, authentication
7. Smart Applications — home automation, agriculture, healthcare, smart city
8. IoT Project — design, implement, and document a working IoT project

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