SEO - noindex nofollow and canonical tag

Question

I need some explanation about my question.

Example on my header already added

<meta name="robots" content="noindex, nofollow" />

Should I add canonical tag again to my header?

<link rel=”canonical” href=”http://www.example.com/product.php?item=big-fish” />

Let me know :)

canonical tag

Answer 1

<meta name="robots" content="noindex, nofollow" />

use this so that the google bot doesnt index your page but if this is used that pages become Dangling pages or such pages is called as Nodes 

if you want a optimal meta thwn use this 

<meta name="robots" content="noindex,noarchive,nosnippet,follow" />