What is Inter-Process Communication and what are its methods?
Explores how distinct processes exchange data, covering pipes, message queues, and shared memory.
Why Interviewers Ask This
IPC is essential for modular system design. Interviewers want to know if you can choose the right mechanism for data exchange based on performance and complexity requirements.
How to Answer This Question
Define IPC as the mechanism allowing processes to communicate. List methods like pipes, sockets, shared memory, and message queues. Compare them based on speed, complexity, and data size limits. Highlight shared memory as the fastest but most complex method.
Key Points to Cover
- Definition of IPC
- Types of mechanisms
- Performance trade-offs
- Synchronization requirements
Sample Answer
Inter-Process Communication enables data exchange between unrelated processes. Common methods include pipes for sequential data, message queues for buffered messages, and shared memory for high-speed bulk transfer. While shared memory offers the best performance, it requires careful synchronization to prevent race conditions among processes.
Common Mistakes to Avoid
- Omitting shared memory as a method
- Confusing local and remote IPC
- Failing to mention synchronization needs
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