Content Strategy to Avoid Duplicated Pages

1. Which of these is one possible solution for dealing with the duplicate content issue?
2. Which SEO technique include duplicate content?

Which of these is one possible solution for dealing with the duplicate content issue?

The Solution: NoIndex

Rather than use a canonical tag to point back to the master page, the better solution here is to add a noindex meta tag to each page to keep them out of the search engines' index altogether. Generally, these pages tend to be orphans, not having any direct links to them from inside the site.

Which SEO technique include duplicate content?

Black Hat SEO: Techniques that search engines do not approve of and those techniques which are used for optimizing the website are called Black Hat SEO. It mainly contains duplicate contents. Such websites are mainly used to redirect users to other websites and cause traffic.