> ## Documentation Index
> Fetch the complete documentation index at: https://launchpad-about-us.nxtwave.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# 💻 Core CS & System Design

> Cover Core CS and System Design on Launchpad, including DBMS, Computer Networks, Operating Systems, OOPS, and both LLD and HLD design rounds.

The Core CS and System Design track on Launchpad covers the theory rounds and design rounds that decide most placement outcomes. You will strengthen the fundamentals interviewers grill you on, and pick up the design vocabulary you need to walk through Low-Level and High-Level Design questions with confidence.

## Explore the track

<Tabs>
  <Tab title="Core CS">
    Core CS builds the theoretical base that shows up in almost every technical interview:

    * **DBMS**: relational modeling, normalization, transactions, and indexing concepts that recruiters test.
    * **Computer Networks**: layered networking models, protocols, and the questions that come up around HTTP, TCP, and DNS.
    * **Operating Systems**: processes, threads, scheduling, memory, and concurrency essentials.
    * **OOPS**: object-oriented principles you will be asked to explain and apply in code.
  </Tab>

  <Tab title="System Design">
    System Design on Launchpad is split into the two rounds companies actually run:

    * **Low-Level Design (LLD)**: class-level modeling, design patterns, and API design questions that appear in mid-round interviews.
    * **High-Level Design (HLD)**: end-to-end architecture, scalability, and trade-off discussions for senior technical rounds.
  </Tab>
</Tabs>

<Note>
  Core CS questions and system design rounds are common in top-tier company interviews. Pair this track with [Mock Interviews](/placement/mock-interviews) to rehearse them live.
</Note>

## Related resources

<CardGroup cols={2}>
  <Card title="Interview Prep" icon="user-tie" href="/placement/interview-prep">
    A dedicated hub for interview-day readiness across DSA, core CS, and system design.
  </Card>

  <Card title="Databases" icon="database" href="/courses/databases">
    Deepen your DBMS knowledge with SQL, PostgreSQL, and MongoDB practice.
  </Card>
</CardGroup>