Job prep

Placement and interview preparation

Core CS for technical interviews, C# and .NET skills, a code playground and roadmaps for your first developer job.

Start with DSA Open the compiler

Subjects: 7
Articles: 14
Practice quizzes: 6
Video lessons: 119

How to prepare

Step 1
Strengthen core CS
DSA, DBMS, operating systems and networks come up in almost every technical round.
Step 2
Go deep in one stack
Learn one language and framework properly. Our C# and .NET track takes you from basics to APIs.
Step 3
Write and run code
Practice in the online compiler in Python, C#, Java, C++ or JavaScript, with no setup.
Step 4
Rehearse interview questions
Use the quizzes to check your answers, and follow a roadmap so you know what to learn next.

Subjects

Each subject page collects its articles, video lectures and practice quizzes.

GATE CSEJob prep

Data Structures & Algorithms

Arrays, stacks, queues, trees, graphs, complexity analysis, searching, sorting and graph algorithms.

1 article · 35 videos · 2 quizzes

GATE CSEJob prep

Database Management Systems

SQL, joins, normalization, transactions, concurrency control and indexing.

1 article · 34 videos · 1 quiz

GATE CSEJob prep

Operating Systems

Processes, threads, CPU scheduling, synchronization, deadlocks, memory management and file systems.

4 videos · 1 quiz

GATE CSEJob prep

Computer Networks

OSI and TCP/IP layers, IP addressing and subnetting, routing, TCP, UDP, DNS and HTTP.

2 articles · 44 videos · 1 quiz

Job prep

C# & .NET

C# fundamentals, ASP.NET Core APIs, debugging deployments and localization for real .NET jobs.

9 articles · 1 quiz

Job prep

System Design

Scalable architecture, caching, load balancing and design trade-offs for interviews.

1 video

Job prep

Career & Roadmaps

Learning roadmaps, programming practice and advice for landing your first developer role.

1 article · 1 video

Read before your interview

Explanations written around the questions interviewers actually ask.

All articles

Data Structures

13 min read

Time and space complexity explained with one practical example

Understand Big O, time complexity, and space complexity by comparing three duplicate-checking solutions.

Read article

DBMS

10 min read

Why one SQL join returns 5 rows and another returns 12

Learn inner, left, right, and full joins through one clear, practical dataset.

Read article

Computer Networks

12 min read

What really happens when you enter a URL?

Follow a request through DNS, CDN, load balancers, app servers, and downstream services.

Read article

Computer Networks

11 min read

IP addressing explained: classful, subnetting, and CIDR

Understand how IPv4 addressing evolved from fixed classes to subnetting and CIDR with masks, host counts, and examples.

Read article

.NET

6 min read

Compile-Time Error vs Runtime Error in C#: Explained with Examples

Learn the difference between compile-time and runtime errors in C# with clear examples, including type errors, divide-by-zero exceptions, null references, and var vs dynamic.

Read article

.NET

4 min read