Node.js Test 1

Question 1

When there is no more data to read, the stream sends an end event.

Accepted Answer

True

Answer

Explanation:
When there is no more data to read, a stream fires an end event.

Question 2

Which of the following statements concerning the global object __dirname is correct?

Accepted Answer

The _dirname represents the name of the directory that the currently executing script rides in.

Answer

Explanation:
The __dirname specifies the name of the directory in which the currently running script is located.

Question 3

Which of the following lines of code prints the amount of memory used?

Accepted Answer

console.log('Current version: ' + process.memory());

Answer

Explanation:
To find out how much memory is being consumed, use process.memoryUsage().

Question 4

Which of the following statements regarding Node.JS is correct?

Accepted Answer

All of these

Answer

Explanation:
Node.js is a powerful JavaScript-based framework/platform based on the JavaScript V8 Engine in Google Chrome. It is used to develop I/O-intensive online applications such as video streaming sites, single-page applications, and other websites. Thousands of developers use Node.js because it is open source and absolutely free.

Question 5

Which of the following statements concerning the global function setTimeout(cb, ms) is true?

Accepted Answer

Both of the above

Answer

Explanation:
The global function setTimeout(cb, ms) is used to perform callback cb after at least ms milliseconds. The real delay is determined by external factors such as the granularity of the OS timer and the system load. A timer can only run for 24.8 days. The timer is represented by an opaque value returned by this function, which can be used to clear the timer.

Node.js Practice Test

Node.js Practice Test

Node.js Test 1