Hackathon_NodeJs_Exam

When a javaScript function is invoked (called) in Node, where is a new frame placed?

• the call stack

• the event loop

• the poll phase

• the events queue

Which of the following is a core module in Node?

• webpack

• crypto

• request

• chalk

Which of the following Buffer class methods returns an uninitialized buffer?

• allocUnsafe

• • concat

• • from

• • alloc

Which of the following modules is NOT a built-in module in Node?

• • events

• • http2

• • dgram

• • ftp

Which fs module method can be used to read the content of a file without buffering it in memory?

• • read

• • readFile

• • createReadStream

• • readFileSync

Which of the following DNS module methods uses the underlying OS facilities and does not necessarily perform any network communication?

• • lookup

• • resolve

• • resolve4

• • reverse

How do you check that a value is a date object in Node?

• • util.types.isDate(value)

• • assert.isDate(value)

• • console.isDate(value)

• • util.date(value)

Can you create an https web server with Node.js?

• • no, there are no modules supporting it yet

• • yes, with the https or http2 modules

• • yes, through the path module

• • yes, with the http module

What is the Api that is designed to insulate Addons from changes in the underlying JavaScript engine?

• • A-API

• • Z-API

• • N-API

• • X-API

Which line imports a promise-based version of the readFile method?

• • const { readFile } = require(fs).promises

• • const { readFile } = require(fs)

• • const { readFilePromises: readFile } = require(fs)

• • const { readFile } = require(promises)