In addition to http, what other protocols are used to request web pages?

In addition to http, what other protocols are used to request web pages?

Active User: A protocol for discovering the currently logged in user, but don’t expect too much from it.

Character Generator protocol specification: a small protocol that seems to be of little use. Sometimes I don't know why so many protocols were invented.

CIP transmission protocol specification: Through this protocol we can learn how to use existing technology to quickly construct an application layer protocol, which is quite useful.

Daytime Agreement: Some agreements are really small, and there is no harm in taking a look at them. It is also interesting to know that not all agreements are so terrible (and interesting at the same time).

DHCP protocol specification: For configuring diskless stations, it is helpful to have an in-depth understanding of the working process of NT's DHCP Server. It is an extension of the BOOTP protocol. It will be easier to understand if you have the basics of BOOTP.

DNS protocol specification: DNS may be the most commonly used part of the Internet. It will be beneficial to take a look at its mechanism. and

Echo protocol specification: This is the simplest protocol I have ever seen, and it doesn’t take a minute to look at it.

FTP protocol specification: It is an old protocol, but it is still used a lot.

ICMP protocol specification: a protocol used for network management. Compared with it, you can think about the mechanism of PING command implementation.

IP protocol specifications: The top is TCP, the bottom is IP. These two protocols can be said to be the foundation of the Internet.

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