1. What is Stream ? Mid A. the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs B. an abstraction for reading or writing data in chunks rather than all at once C. the promise-based version of the file-system API, for use with async/await D. a fixed-length container for raw binary data allocated outside the V8 heap
2. Which term means: "an abstraction for reading or writing data in chunks rather than all at once"? Mid A. Backpressure B. fs.promises C. Stream D. EventEmitter
3. Which statement is correct? Mid A. Stream — a fixed-length container for raw binary data allocated outside the V8 heap B. Stream — an abstraction for reading or writing data in chunks rather than all at once C. Stream — the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs D. Stream — connects a readable stream to a writable stream, handling backpressure automatically
4. What is Buffer ? Mid A. an abstraction for reading or writing data in chunks rather than all at once B. a fixed-length container for raw binary data allocated outside the V8 heap C. pausing a readable stream when the writable side can't keep up, preventing memory blowup D. the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs
5. Which term means: "a fixed-length container for raw binary data allocated outside the V8 heap"? Mid A. pipe() B. EventEmitter C. Backpressure D. Buffer
6. Which statement is correct? Mid A. Buffer — pausing a readable stream when the writable side can't keep up, preventing memory blowup B. Buffer — the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs C. Buffer — the promise-based version of the file-system API, for use with async/await D. Buffer — a fixed-length container for raw binary data allocated outside the V8 heap
7. What is Backpressure ? Senior A. connects a readable stream to a writable stream, handling backpressure automatically B. pausing a readable stream when the writable side can't keep up, preventing memory blowup C. the promise-based version of the file-system API, for use with async/await D. an abstraction for reading or writing data in chunks rather than all at once
8. Which term means: "pausing a readable stream when the writable side can't keep up, preventing memory blowup"? Senior A. fs.promises B. EventEmitter C. Backpressure D. Buffer
9. Which statement is correct? Senior A. Backpressure — pausing a readable stream when the writable side can't keep up, preventing memory blowup B. Backpressure — the promise-based version of the file-system API, for use with async/await C. Backpressure — connects a readable stream to a writable stream, handling backpressure automatically D. Backpressure — the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs
10. What is fs.promises ? Mid A. pausing a readable stream when the writable side can't keep up, preventing memory blowup B. an abstraction for reading or writing data in chunks rather than all at once C. the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs D. the promise-based version of the file-system API, for use with async/await
11. Which term means: "the promise-based version of the file-system API, for use with async/await"? Mid A. pipe() B. Stream C. fs.promises D. EventEmitter
12. Which statement is correct? Mid A. fs.promises — pausing a readable stream when the writable side can't keep up, preventing memory blowup B. fs.promises — the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs C. fs.promises — connects a readable stream to a writable stream, handling backpressure automatically D. fs.promises — the promise-based version of the file-system API, for use with async/await
13. What is EventEmitter ? Mid A. pausing a readable stream when the writable side can't keep up, preventing memory blowup B. an abstraction for reading or writing data in chunks rather than all at once C. the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs D. connects a readable stream to a writable stream, handling backpressure automatically
14. Which term means: "the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs"? Mid A. pipe() B. fs.promises C. Buffer D. EventEmitter
15. Which statement is correct? Mid A. EventEmitter — connects a readable stream to a writable stream, handling backpressure automatically B. EventEmitter — the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs C. EventEmitter — the promise-based version of the file-system API, for use with async/await D. EventEmitter — an abstraction for reading or writing data in chunks rather than all at once
16. What is pipe() ? Mid A. the promise-based version of the file-system API, for use with async/await B. the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs C. an abstraction for reading or writing data in chunks rather than all at once D. connects a readable stream to a writable stream, handling backpressure automatically
17. Which term means: "connects a readable stream to a writable stream, handling backpressure automatically"? Mid A. Backpressure B. Stream C. fs.promises D. pipe()
18. Which statement is correct? Mid A. pipe() — the base class providing .on()/.emit() publish-subscribe for Node's event-driven APIs B. pipe() — connects a readable stream to a writable stream, handling backpressure automatically C. pipe() — an abstraction for reading or writing data in chunks rather than all at once D. pipe() — the promise-based version of the file-system API, for use with async/await