17 questions for “Streams & Buffers”

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Information Technology

17 questions in 1 technology

#	Question	Technology	Topic	Level
1	How would you copy a large file efficiently in Node.js, and what's the difference between fs.copyFile() and manually piping streams? Node.js › File System & File Processing	Node.js	File System & File Processing	Intermediate
2	What is backpressure in Node.js streams, and how do you handle it correctly when piping data? Node.js › Advanced Node.js	Node.js	Advanced Node.js	Advanced
3	What is the difference between fs.readFile() and fs.createReadStream() for reading a file in Node.js? Node.js › File System & File Processing	Node.js	File System & File Processing	Beginner
4	What is the difference between multer's diskStorage and memoryStorage engines? Node.js › File Uploads & Media Processing	Node.js	File Uploads & Media Processing	Beginner
5	How do you correctly propagate and handle errors from a Node.js stream, given that stream errors aren't caught by a surrounding try/catch? Node.js › Error Handling	Node.js	Error Handling	Intermediate
6	How would you stream a large file upload directly to processing (like virus scanning or transcoding) without first saving the entire file to disk? Node.js › File Uploads & Media Processing	Node.js	File Uploads & Media Processing	Intermediate
7	What is the purpose of the Content-Length and Transfer-Encoding: chunked headers, and why can't a response use both simultaneously? Node.js › HTTP & Web Servers	Node.js	HTTP & Web Servers	Intermediate
8	How would you pipe the output of one child process directly into the input of another, replicating a shell pipeline in Node.js? Node.js › Child Processes & Process Management	Node.js	Child Processes & Process Management	Intermediate
9	How would you read a large file efficiently using a stream rather than loading it entirely into memory with fs.readFile()? Node.js › File System (fs) Module	Node.js	File System (fs) Module	Intermediate
10	What is the global Buffer class, and how does it relate to the process object's broader role in giving access to system-level capabilities? Node.js › Global Objects & the process Object	Node.js	Global Objects & the process Object	Intermediate

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