One-sentence explanation of various network protocols

Source: Internet
Author: User
Tags imap lightweight directory access protocol ldap file transfer protocol

1. Protocol family TCP/IP is a large collection of different communication protocols based on the first two Protocols, TCP and IP. 2. TCP-Transmission Control Protocol (TCP) is used to control data transmission from applications to networks. TCP is responsible for dividing data into IP packets before data transmission, and then reorganizing them when they arrive. 3. IP-Internet Protocol IP addresses are responsible for communication between computers. The IP address is responsible for sending and receiving packets over the Internet. 4. HTTP-Hypertext Transfer Protocol (HTTP) is responsible for communication between web servers and web browsers. HTTP is used to send requests from the web Client (browser) to the web server and return content (webpage) from the web server to the web Client ). 5. HTTPS-secure HTTPHTTPS is responsible for secure communication between web servers and web browsers. As a representative application, HTTPS is used to process credit card transactions and other sensitive data. 6. SSL-Secure Socket Layer SSL protocol is used to encrypt data transmission for secure data. 7. SMTP-Simple Mail transmission protocol SMTP is used for email transmission. The SMTP protocol is used to transmit emails. SMTP is responsible for sending emails to another computer. Normally, an email is sent to an SMTP server and then to another (or several) server. Then, it is finally sent to its destination. SMTP can also transmit plain text, but it cannot transmit binary data such as slices, sounds, or movies. SMTP uses the MIME protocol to send binary data over the TCP/IP network. The MIME protocol converts binary data to plain text. 8. MIME-multi-purpose Internet Mail Extensions MIME protocol enables SMTP to transmit multimedia files, including sound, video, and binary data, over TCP/IP networks. 9. IMAP-Internet Message Access Protocol IMAP is used to store and retrieve emails. Similar to POP, the IMAP protocol is also used by mail programs. The main difference between the IMAP protocol and the POP protocol is that if IMAP is connected to the email server, it will not automatically download the email to the email program. IMAP enables you to view emails on the mail server before downloading them. With IMAP, you can download these emails or simply delete them. For example, you need to access the email server from different locations, but you only want to download the email when you return to the office. IMAP is useful in this case. 10. POP-Post Office Protocol POP is used to download emails from the email server to your PC. If your email program uses POP, once it connects to the email server, all your emails will be downloaded to the email program (or called the mail client ). 11. FTP-File Transfer Protocol FTP is responsible for file transfer between computers. 12. NTP-The Network Time Protocol NTP is used to synchronize time (minutes) between computers ). 13. DHCP-Dynamic Host Configuration Protocol DHCP is used to allocate Dynamic IP addresses to computers on the network. 14. SNMP-Simple Network Management Protocol (SNMP) is used to manage computer networks. 15. LDAP-Lightweight Directory Access Protocol LDAP is used to collect information about users and email addresses from the Internet. 16. ICMP is responsible for handling errors in the network. 17. ARP-Address Resolution ProtocolARP-used to find the hardware Address of the computer NIC based on IP addresses. 18. RARP-Reverse Address Resolution ProtocolRARP is used to find the IP Address of the computer NIC based on the hardware Address through the IP Address. 19. BOOTP-Boot ProtocolBOOTP is used to start the computer from the network. 20. PPTP-Point-to-Point Tunneling Protocol PPTP is used for connection (Tunnel) between private networks ).

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