๐ ISRO – Technical Assistant (Computer Science)
Post: Technical Assistant (Computer Science)
Eligibility: Diploma in CS/IT
Selection Process:
- ✅ Written Exam (100 Marks)
- ✅ Skill Test (Qualifying, if applicable)
๐ Syllabus for ISRO Technical Assistant (CS)
๐ Section A: Core Computer Science (100%)
Note: Sometimes ISRO puts 100% weight on technical syllabus
✅ Programming Concepts
- C, C++, Python (basics + syntax + output prediction)
- OOPS Concepts
- Pointers, Arrays, Structures
✅ Data Structures & Algorithms
- Stack, Queue, Linked List, Tree, Graph
- Searching, Sorting Algorithms
- Time Complexity
✅ Computer Networks
- OSI Model, TCP/IP
- IP Addressing, DNS, HTTP, FTP
- Network Devices (Router, Switch)
✅ Operating Systems
- Process, Thread, Scheduling
- Deadlocks, Memory Management
- File Systems, Virtual Memory
✅ DBMS (Database Management)
- SQL Queries (SELECT, JOIN, GROUP BY)
- Normalization
- Transactions, ACID Properties
✅ Computer Organization & Architecture
- Number System, Logic Gates
- Memory Types (RAM, ROM, Cache)
- CPU Organization, Pipelining
✅ Software Engineering
- SDLC, Agile, Waterfall Models
- Testing Methods (Unit, Integration)
- UML Diagrams
✅ Web Basics
- HTML, CSS, JavaScript (basics)
- HTTP/HTTPS
- Client-Server Architecture
๐️ Previous Paper Pattern (Weightage Idea)
| Topic | Questions (approx) |
|---|---|
| Programming (C/C++) | 15–20 |
| Data Structures/Algorithms | 10–15 |
| OS & COA | 15–20 |
| DBMS | 10–12 |
| Networks | 8–10 |
| Software Engg | 5–10 |
| Web + General IT | 5–8 |
๐ 3-Month Preparation Roadmap
✅ Month 1: Basics + Programming
- Week 1: C & C++ basics + OOPS
- Week 2: DS – Array, Stack, Queue
- Week 3: DBMS + SQL Practice
- Week 4: Operating System Basics
✅ Month 2: Deep Concepts
- Week 1: COA + Number Systems
- Week 2: Computer Networks (OSI, TCP/IP)
- Week 3: Trees, Graphs + Sorting Algorithms
- Week 4: Software Engineering + SDLC
✅ Month 3: Practice & Revision
- Week 1: Solve Previous Year Papers
- Week 2: Take Mock Tests (Time-based)
- Week 3: Revise Short Notes + Diagrams
- Week 4: Final Full-Length Practice
๐ Best Books for ISRO Technical Assistant (CS)
| Subject | Recommended Book |
|---|---|
| Programming in C | “Let Us C” – Yashwant Kanetkar |
| DS & Algo | “Data Structures Through C” – Y. Kanetkar |
| OS | Galvin or Operating Systems – Dhamdhere |
| COA | Computer Organization – Morris Mano |
| DBMS | Navathe or Korth |
| CN | Computer Networks – Tanenbaum or Forouzan |
| All-in-One | GKP / Made Easy / ACE Diploma CS Books |
๐ Practice Resources
- GeeksforGeeks.org
- IndiaBIX
- ISRO previous papers (PDFs) – Available on Telegram/Prep sites
- Mock Tests – Oliveboard / Testbook / Gradeup (Free & Paid)
๐ ️ Skill Test (if applicable)
- May include: Basic typing, small coding task, troubleshooting task
- Usually qualifying in nature (not counted in merit)
๐ข Extra Tips:
- Focus only on Diploma level syllabus, not full B.Tech
- Revise ISRO-specific past papers
- Don’t ignore COA, it comes heavy in weightage
- Make short notes and revise weekly