Explanation:

• Dark Net (or Darknet) is an umbrella term describing the portions of the Internet not open to public view or hidden networks whose architecture is superimposed on that of the Internet.
• Deep Web is the area of the Internet which is not accessible through search engines. What can be accessed through search engines is called Surface Web. To get into the Deep Web one should know the right address.
• Dark Web is part of the Deep Web. While the Deep Web is accessible, the Dark Web is deliberately hidden. While incognito mode disables browsing history and web cache, the Dark Web is shielded by specialised software. Hence all statements are correct.