<s>
File	B-Protocol
transfer	I-Protocol
is	O
the	O
transmission	O
of	O
a	O
computer	O
file	O
through	O
a	O
communication	O
channel	O
from	O
one	O
computer	O
system	O
to	O
another	O
.	O
</s>
<s>
Typically	O
,	O
file	B-Protocol
transfer	I-Protocol
is	O
mediated	O
by	O
a	O
communications	O
protocol	O
.	O
</s>
<s>
In	O
the	O
history	O
of	O
computing	O
,	O
numerous	O
file	B-Protocol
transfer	I-Protocol
protocols	I-Protocol
have	O
been	O
designed	O
for	O
different	O
contexts	O
.	O
</s>
<s>
A	O
file	B-Protocol
transfer	I-Protocol
protocol	I-Protocol
is	O
a	O
convention	O
that	O
describes	O
how	O
to	O
transfer	O
files	O
between	O
two	O
computing	O
endpoints	O
.	O
</s>
<s>
As	O
well	O
as	O
the	O
stream	O
of	O
bits	O
from	O
a	O
file	O
stored	O
as	O
a	O
single	O
unit	O
in	O
a	O
file	B-Application
system	I-Application
,	O
some	O
may	O
also	O
send	O
relevant	O
metadata	O
such	O
as	O
the	O
filename	B-Device
,	O
file	O
size	O
and	O
timestamp	O
-	O
and	O
even	O
file-system	B-Application
permissions	O
and	O
file	B-Application
attributes	I-Application
.	O
</s>
