Quiz 1

Question 1

According to Mosh Hamedani the best description of Node is…..

Answer 1

a JavaScript runtime environment

Question 2

A synchronous function throws an exception to tell the caller about a critical error that prevented completion of the task. How does an asynchronous function tell the caller about the error?

Answer 2

It passes the error to the callback function that was provided

Question 3

In a Node program, what does “progress.argv” contain?

Answer 3

The command line arguments

Question 4

Suppose you have a program in the file “app.js” and you are expecting the program to be called with a command line parameter – for example, “node app 4”. How can you get the value that is being passed in?

Answer 4

process.argv[2]

Question 5

What is the name of the built in Node module that contains the function readFile?

Answer 5

fs

Question 6

Which of the following statements about callback functions is false?

Answer 6

It is returned by another function

Question 7

Mosh Hamedani compares an asynchronous program to a waiter in a restaurant who…?

Answer 7

Serves new tabes while the meals for other tables are being prepared.

Question 8

What is the name of the object used to make functions in a module accessible to other modules?

Answer 8

Exports

Question 9

Which of the following is not available in a Node program?

Answer 9

DOM