Address is widely used on a daily basis to mean an address or address. In the IT field, it is used in two senses: “address used on the Internet” and “computer memory address.”
address used on the internet
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Addresses used on the Internet include “IP addresses” that identify devices connected to the Internet, “URLs” that specify the location and attributes of websites and homepages, and “email addresses” that identify users who use e-mail. and so on.
IP address
On the Internet network, computers and communication devices communicate using IP (Internet Protocol: a common protocol). To do this, an identification number is required to identify the computer or communication device. This identification number is called an IP address.
URL
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A URL specifies the location and attributes of a website, homepage, etc. on the Internet, and is referred to as an address within the Internet. Specifically, information such as the type of resource such as a website or homepage,
server
name, port number, folder name, file name, etc. is expressed in a predetermined format.
The URL is expressed as “https://.co.jp/”, and the first “https://” is SSL-enabled, and the https protocol is used for data communication, which is more secure than http. Indicates that
The “.co.jp/” part is called the domain.
A domain
represents the address of a server on the Internet. “co.jp” is a domain that can be used by companies that have completed corporate registration in Japan. The “co” in “co.jp” is an abbreviation for “commercial” and indicates commercial use, and the “jp” stands for Japan.
email address
An e-mail address is a symbol used to identify a user when exchanging e-mails on the Internet. Send and receive emails by entering your email address in the destination field.
Specifically, a symbol specifying the user is placed before the @ mark, and the address of the mail server program is placed after the @ mark.
computer memory address
The number that indicates the location of data or programs in a computer’s memory device (RAM) is called a memory address. The range of memory addresses that are valid through memory management is called the memory address space.
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