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a frame is the unit of information transfer in the datalink layer
Frame-Relay
ftp
The File Transfer Protocol defined in :rfc:`959` has been the `de facto` protocol to exchange files over the Internet before the widespread adoption of HTTP :rfc:`2616`.
FTP
The File Transfer Protocol is defined in :rfc:`959`
hosts.txt
The original file containing the list of all Internet hosts. This file has been deprecated, but Unix variants still maintain a local ``/etc/hosts`` containing mappings between names and IP addresses. See http://man7.org/linux/man-pages/man5/hosts.5.html for a description of the format of this file on Linux.
HTML
The HyperText Markup Language specifies the structure and the syntax of the documents that are exchanged on the world wide web. HTML is maintained by the `HTML working group <https://www.w3.org/html/wg/>`_ of the :term:`W3C`
HTTP
The HyperText Transport Protocol is defined in :rfc:`2616`
hub
A relay operating in the physical layer.
IANA
The Internet Assigned Numbers Authority (IANA) is responsible for the coordination of the DNS Root, IP addressing, and other Internet protocol resources
iBGP
An iBGP session is a BGP between two routers belonging to the same Autonomous System. Also called an internal BGP session.
ICANN
The Internet Corporation for Assigned Names and Numbers (ICANN) coordinates the allocation of domain names, IP addresses and AS numbers as well protocol parameters. It also coordinates the operation and the evolution of the DNS root name servers.