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1. A file or document that is sent along with an email message.
2. An organization or company that manages the reservation and registration of domain names for individuals or businesses.
3. A database entry that provides information about a domain, such as its IP address.
4. A file containing CSS code with a .css extension, used to define styles for HTML documents.
5. A numerical label is given to every device connected to a computer network that utilizes the Internet Protocol for communication.
6. A label is designated to a device that is linked to a computer network.
7. A feature that enables multiple users to participate in a single chat conversation within an instant messaging client.
8. A collection of interconnected devices and systems, such as computers and servers, that can communicate with each other.
9. An IP address that is reserved for internal use within a private network.
10. A globally unique IP address that is assigned to a device connected to a public network.
11. The folder or section in an email client where incoming email messages are stored.
12. The process of associating a network layer address, like an IP address, with a data link layer address, such as a MAC address.
13. A message sent by a server in reply to a request.
14. The duration for which a DNS record is cached by a resolver.
15. 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.
16. Global computer network providing information and communication facilities, consisting of interconnected networks using standardized communication protocols.
17. Internet Protocol version 6, the most recent version of the Internet Protocol, designed to succeed IPv4.
18. A domain that is part of a larger domain, also known as a sublevel domain.
19. Unwanted or unsolicited email messages, usually consisting of advertisements or promotional content.