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URL: https://www.geeksforgeeks.org/courses/cs-core-subjects-skill-up

⇱ CS Core Subjects - Skill Up

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CS Core Subjects - Skill Up

Self-Paced Course
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This program is a comprehensive guide through all core Computer Science subjects, including DBMS, OS, CN, and OOP. It covers foundational and advanced topics, helping learners build solid theoretical understanding and practical problem-solving skills. Perfect for students preparing for technical interviews, university exams, or enhancing core subject knowledge.

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Serious & committed learners can still earn up to 90% of their course fee back by taking the Three 90 Challenge.

Course Overview

Each subject is taught week-wise with focused content, relevant links, quizzes, and real-world insights.

Course Highlights

  • Learn core Computer Science subjects including DBMS, Operating Systems, Networking, and OOP in C++
  • Understand the fundamentals of databases, ER modeling, normalization, SQL, transactions, indexing, and NoSQL
  • Master operating system concepts like process scheduling, memory management, deadlocks, file systems, and OS security
  • Dive deep into networking layers, protocols, IP addressing, routing, and explore modern topics like VPNs, 5G, Cloud, and IoT
  • Get hands-on with object-oriented programming in C++ including inheritance, polymorphism, templates, and exception handling
  • Explore advanced topics like distributed databases, data warehousing, real-time OS, and SDN
  • Apply learning through structured progression and integrated theoretical + practical concepts

Course Content

01Week 1–5: Database Management Systems (DBMS)
  • Introduction to DBMS, its characteristics and advantages
  • DBMS architecture, schemas, and data independence
  • Database languages, interfaces, user roles
  • ER Modeling and Enhanced ER Concepts (attributes, relationships, specialization, aggregation)
  • Relational Model: keys, constraints, functional dependencies, normalization
  • Lossless joins, dependency preservation, anomalies, denormalization
  • Relational Algebra and Relational Calculus
  • SQL basics: commands, clauses, joins, nested queries
  • Views, indexing, transactions, triggers, cursors
  • Transactions, ACID, states, scheduling, serializability
  • Locking mechanisms, concurrency control, deadlocks
  • File organization, indexing (B-Trees, Hashing)
  • Distributed Databases and NoSQL
  • Data Warehousing, Mining, Big Data, Hive, HBase, Multimedia, GIS
02Week 6–10: Operating Systems (OS)
  • OS Introduction, types, and functionalities
  • Booting, kernel types, system calls
  • Process and thread management, scheduling techniques
  • Multithreading, synchronization, inter-process communication
  • Deadlocks: detection, prevention, recovery
  • Memory Management: allocation, fragmentation, paging, segmentation
  • Virtual memory, demand paging, page replacement, thrashing
  • Disk scheduling and file system management
  • File attributes, directories, access methods
  • I/O management, buffering, spooling, caching
  • OS security: threats, protection, authentication
  • Real-Time and Distributed OS concepts
03Week 11–14: Computer Networks (CN)
  • Introduction to networking, types, topologies, and goals
  • OSI and TCP/IP models
  • Transmission media and communication techniques
  • Data Link Layer: framing, switching, flow & error control
  • MAC techniques and channel access protocols
  • Advanced link protocols (PPP, HDLC, etc.)
  • Network Layer: IP addressing, subnetting, VLSM, routing algorithms
  • Transport Layer: TCP, UDP, SCTP, DCCP, RUDP
  • Application Layer: DNS, HTTP, FTP, SMTP, IMAP
  • Security, VPN, firewalls, QoS, 4G vs 5G
  • Future technologies: Cloud, IoT, NFV, SDN
04Week 15–16: Object-Oriented Programming in C++ (OOP)
  • Introduction to OOP concepts and benefits
  • C++ syntax, data types, control structures
  • Classes and Objects, constructors, destructors
  • Encapsulation, data hiding, inheritance
  • Polymorphism, abstraction, virtual functions
  • Dynamic memory management, smart pointers
  • Operator overloading, templates
  • Exception handling and file handling in OOP
  • Advanced C++: namespaces, const, RTTI, lambdas

Frequently Asked Questions

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