Software Developer

• What is threading? (Learn)
• What is the difference between a process and a thread?
• Why do we need multithreading? (Learn)
• What are the advantages and disadvantages of multithreading?

You are given a 2D integer matrix (an array of arrays). Your task is to efficiently calculate the sum of elements within a specific rectangular block of this matrix.

The rectangular block is defined by its top-left corner at (r1, c1) and its bottom-right corner at (r2, c2). You need to find the sum of all elements matrix[i][j] such that r1 <= i <= r2 and c1 <= j <= c2.

Build a web server that reads data from a file containing multiple entries.

Whenever a new entry is added to the file, the update should be reflected on the UI in real time, without requiring the user to refresh the page.

When a new client connects to the server, the UI should initially display the last 10 entries from the file. After the connection is established, any new entries added to the file must be pushed to all connected clients, ensuring that every client sees the updates instantly and simultaneously, without manual refresh.

• What major projects did I work on during my previous internship?
• How did they impact the product?
• What problems can occur in multithreaded programs?
• What is context switching?
• What is thread safety?