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Node.js MCQs

You have to read a large text file, replace some words in it, and write it back to a new file. You know that the memory on your target system is limited. What should you do?

Use regular expressions directly on the file.

Use Promises and async/await to offload the task to libuv.

Copy the file into a database and perform the operations there.

Use readline together with streams to read and transform and write the file contents line by line.

Answer

Correct Answer: Use readline together with streams to read and transform and write the file contents line by line.

Explanation:

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