In ExpressJS, the method app.all(path, callback [, callback ...]) can accept all HTTP methods

Route paths, in combination with a request method, define the endpoints at which requests can be made.
Which of following are valid form of route path?

Where is captured values are populated regarding route parameters?

How many number of callback functions can be attached to handle a request?

Is the below code valid?

var cb0 = function (req, res, next) {
  console.log('CB0')
  next()
}

var cb1 = function (req, res, next) {
  console.log('CB1')
  next()
}

var cb2 = function (req, res) {
  res.send('Hello from C!')
}

app.get('/example/c', [cb0, cb1, cb2])

Is the code below valid?

var cb0 = function (req, res, next) {
  console.log('CB0')
  next()
}

var cb1 = function (req, res, next) {
  console.log('CB1')
  next()
}

app.get('/example/d', [cb0, cb1], function (req, res, next) {
  console.log('the response will be sent by the next function ...')
  next()
}, function (req, res) {
  res.send('Hello from D!')
})

How can we create chainable route handlers for a route path in ExpressJS app?

Node.js runs on __________

Node.js is ________ by default.

Node.js supports which of the following platform?