Introduction to domain name and ip
- What does domain name mean?
Domain Name (English: Domain Name), also known as domain, is the name of a computer or computer group on the Internet composed of a string of names separated by dots, which is used to locate the computer during data transmission (sometimes also refers to geographic location). Because IP addresses are inconvenient to remember and cannot display the name and nature of the address organization, people have designed domain names, and used the Domain Name System (DNS, Domain Name System) to map domain names and IP addresses to each other, making people more Easily access the Internet without having to remember IP address strings that can be directly read by machines.
Although IP addresses can uniquely mark computers on the network, IP addresses are a long string of numbers, which is not intuitive, and is very inconvenient for users to remember, so people have invented another set of character-based address schemes, the so-called domain name address. .
Second, what does ip mean?
IP is the abbreviation of Internet Protocol (Internet Protocol), which is the Internet layer protocol in the TCP/IP system. The purpose of designing IP is to improve the scalability of the network: one is to solve the Internet problem and realize the interconnection of large-scale and heterogeneous networks; independent development. According to the end-to-end design principle, IP only provides a connectionless, unreliable, best-effort packet transmission service for hosts.
IP is the core of the entire TCP/IP protocol suite and the foundation of the Internet. IP is located in the network layer of the TCP/IP model (equivalent to the network layer of the OSI model), it can provide information of various protocols to the transport layer, such as TCP, UDP, etc.; IP packets can be placed in the link layer, It is transmitted through various technologies such as Ethernet, Token Ring network, etc. In order to adapt to heterogeneous networks, IP emphasizes adaptability, simplicity and operability, and makes certain sacrifices in reliability. IP does not guarantee the delivery time limit and reliability of packets, and the transmitted packets may have problems such as loss, repetition, delay or disorder.
The above is the introduction of domain name and ip, I hope it can help you.