The answer
Yes. Product companies often ask about Streams and Buffers because they demonstrate a deeper understanding of Node.js internals and performance optimization.
What Level of Node.js Is Required for Backend Jobs?
Are Streams and Buffers important for backend interviews?
More FAQs in What Level of Node.js Is Required for Backend Jobs?
Most junior roles require Node.js fundamentals, Express.js, REST APIs, databases, authentication, and basic deployment knowledge.
Express.js is important, but many companies also expect knowledge of async programming, databases, authentication, security, and Node.js internals.
Yes. Many companies ask about the Event Loop, Call Stack, concurrency, Streams, Buffers, and asynchronous execution.
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