1. Compared with HTTP and HTTPS, which one is faster?
HTTP is always faster than HTTPS in most cases. HTTP and HTTPS are built on top of the TCP protocol.
HTTP only needs to complete the three-way handshake (about 22 milliseconds) to establish a TCP connection, and can directly send HTTP requests. Once the request is received, the data will be sent immediately; in addition, there is no need to consume computing resources during the entire access process.
But HTTPS, in addition to completing the TCP three-way handshake (about 22 milliseconds), also requires an SSL handshake (about 64 milliseconds), so it takes a little longer than HTTPS.
2. Which one is more secure, HTTP or HTTPS?
There is no doubt that HTTPS is more secure. HTTPS means that the identity of the server is authenticated and any data that needs to be transmitted is encrypted.
The way HTTP will transmit data is in clear text, which gives criminals the opportunity to spy on or modify it, meaning any sensitive information using the protocol is at risk, so HTTPS is more secure by comparison.
3. Do mainstream browsers tend to use HTTP or HTTPS?
Take 3 mainstream browsers as examples:
- HTTPS is already the default for Google sites, and in 2014, Google announced HTTPS as a ranking factor to measure search engine optimization (SEO).
- Baidu announced on May 25, 2016 that HTTPS websites have ranking priority.
- Firefox 83 released “HTTPS -Only” mode.
4. What is the difference between an SSL certificate and HTTPS?
An SSL certificate is what you actually buy and install on your server.
HTTPS is the result and display effect of having that certificate.
5. Can a website use both HTTP and HTTPS?
In fact, you can use both HTTP and HTTPS. You can load some resources over a secure HTTPS connection and others over an HTTP connection. Using these two protocols to provide content is called “mixed content”. But be warned: most browsers are starting to block sites with mixed content. Since Google supports HTTPS, it’s best to move to HTTPS entirely.
6. If I already use HTTPS, do I still need v**?
It’s not required, but it’s safer to use both. If you want to make sure your internet access is secure and private, use HTTPS and VPN. HTTPS provides encryption between the client and server, and VPN encrypts data from the computer to the VPN server.
The above are the 6 most common questions collected by the editor. If you still have doubts, you can leave a message and we will answer your questions in time.