Why does the url of some websites start with 'https' and not 'http'?

Answer 1

All websites start with http:// "HyperText Transfer Protocol" www. is there sometimes, it depends on how the domain is set up. http://envq.co.uk wouldn't take me to my NVQ site, but http://www.envq.co.uk would, because the domain doesn't allow it. Secure sites start with https:// It means the data you're about to transfer is encrypted so that if it gets intercepted, it can't be read. Ok your point noted, but why it is not so that all sites should have uniform style of opening ie http://www. and then the site name.

Answer 2

A web URL such as www.Google.com consists of (right-to-left)

• A top-level-domain name (.org, .com, .info, .gov) on the end, to identify the type of site

• A domain name (google in this case) in the middle, to name the site

• A sub-domain (www) on the left, to specify a content folder on the site

The name gets more specific as it moves to the left, from a broad domain name to a folder on the server. The "www" sub-domain was created to standardize where web content goes on servers. It is a folder on the server's drive. Nowadays, most servers redirect requests without the sub-domain specified to "www" automatically. This is the most commonly used sub-domain. Another common one is "ftp" for file transfers.

Answer 3

HTTPS is a relatively secure communications protocol over internet over HTTP (you see HTTPS means HTTP Secure). Many popular user-based services like Google, Facebook, Twitter have switched to HTTPS protocol as default over security issues. According to Wikipedia, as of September '13, 24.6% of Internet's 168088 most popular web sites have a secure implementation of HTTPS.