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1. A server or software that retrieves IP address information by querying DNS servers.
2. To copy or transfer data from a remote computer or server to a local device.
3. The folder or section in an email client where incoming email messages are stored.
4. A top-level domain is the last part of a domain name that follows the final dot, such as .com, .org, or .net.
5. The part of a domain name that comes after the final dot, such as .com.
6. The process of converting characters into a format that is suitable for use in a URL.
7. A server that translates domain names into IP addresses.
8. An IP address that is reserved for internal use within a private network.
9. A separate CSS file that is linked to an HTML document using the 'link' element.
10. A small piece of data stored on the user's computer by the web browser while browsing a website.
11. In an HTTP request or response, additional information is included alongside the main content, which supplies specific details pertaining to the request or response, such as the type of content or cookies.
12. Glyphs or characters used to represent emotions or convey feelings in an instant messaging client.
13. A file containing CSS code with a .css extension, used to define styles for HTML documents.
14. Media Access Control Address, a unique identifier assigned to network interfaces for communications at the data link layer of a network segment.
15. A collection of interconnected devices and systems, such as computers and servers, that can communicate with each other.
16. A type of HTTP cookie that is only stored temporarily and is deleted when the user closes the web browser.
17. Software application used to access and view information on the World Wide Web.
18. A feature that enables multiple users to participate in a single chat conversation within an instant messaging client.
19. A software application that allows users to send and receive instant messages over a network.