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Terminology
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FTP (File Transfer Protocol)
A program used to transfer files between computers connected
to the Internet. Common uses include uploading new or updated
files to a web server, and downloading files from a web server.
GGP (Gateway to Gateway Protocol)
An Internet protocol that specifies how gateway routers
communicate with each other.
Gbps
Abbreviation for Gigabits (GIG-uh-bits) per second, or one billion
bits per second. Internet data rates are often expressed in Gbps.
GRE (Generic Routing Encapsulation)
TCP/IP protocol suite, transport layer encapsulation protocol.
hop
When you send data through the Internet, it is sent first from your
computer to a router, and then from one router to another until it
finally reaches a router that is directly connected to the recipient.
Each individual "leg" of the data's journey is called a hop.
hop count
The number of hops that data has taken on its route to its
destination. Alternatively, the maximum number of hops that a
packet is allowed to take before being discarded. See also TTL.
host
A device (usually a computer) connected to a network.
HTTP (Hyper-Text Transfer Protocol)
HTTP is the main protocol used to transfer data from web sites
so that it can be displayed by web browsers. See also web browser.
ICMP (Internet Control Message Protocol)
An Internet protocol used to report errors and other network-related
information. The ping command makes use of ICMP.