All language subtitles for [SubtitleTools.com] 4_TC-PIP

There are lots and lots of
network protocols used,

and they're all
necessary to help us

get our packets in
the right place.

Think of network
protocols like a set of

rules for how we transfer
data in a network.

Imagine if you sent a letter
to your friend Sasha,

who lives in California,

but your post office
sends it out to

another Sasha who
lives out in New York.

That would hopefully
never happen

since the post office has rules

that they follow to make sure

your letter is sent to
the correct address.

Our networking protocols
do the same thing.

There are rules that make sure

our packets are
routed efficiently,

aren't corrupted, are secure,

go to the right machine,

and are named appropriately.

You get the idea. We'll cover

specific network
protocols later on.

But there are two protocols
that you need to know.

The Transmission
Control Protocol

and the Internet Protocol,

or TCPIP for short,

which had become the predominant

protocols of the Internet.

The Internet Protocol, or IP,

is responsible for delivering

our packets to the
right computers.

Remember those addresses that

computers use to find
something on a network?

They're called IP addresses

or Internet Protocol Addresses.

The Internet Protocol helps
us route information.

The Transmission Control
Protocol, or TCP,

is a protocol that handles

reliable delivery of information

from one network to another.

This protocol was an important
part of the creation of

the internet since
it led us share

information with
other computers.

For now, you've got

a high level
understanding of how

the Internet works with TCP, IP.