<s>
RPL	B-Protocol
(	O
Routing	O
Protocol	O
for	O
Low-Power	O
and	O
Lossy	O
Networks	O
)	O
is	O
a	O
routing	O
protocol	O
for	O
wireless	O
networks	O
with	O
low	O
power	O
consumption	O
and	O
generally	O
susceptible	O
to	O
packet	O
loss	O
.	O
</s>
<s>
RPL	B-Protocol
can	O
support	O
a	O
wide	O
variety	O
of	O
link	O
layers	O
,	O
including	O
those	O
with	O
limitations	O
,	O
with	O
potential	O
losses	O
or	O
that	O
are	O
used	O
in	O
devices	O
with	O
limited	O
resources	O
.	O
</s>
<s>
RPL	B-Protocol
creates	O
a	O
topology	O
similar	O
to	O
a	O
tree	O
(	O
DAG	O
or	O
directed	O
acyclic	O
graph	O
)	O
.	O
</s>
<s>
Three	O
control	O
messages	O
are	O
defined	O
in	O
ICMPv6	B-Protocol
via	O
:	O
</s>
<s>
The	O
implementation	O
of	O
the	O
RPL	B-Protocol
protocol	O
occurs	O
in	O
wireless	B-Architecture
sensors	I-Architecture
and	O
networks	O
,	O
the	O
most	O
used	O
operating	O
system	O
for	O
its	O
implementation	O
is	O
Contiki	B-Operating_System
which	O
is	O
a	O
small	O
open	O
source	O
operating	O
system	O
developed	O
for	O
use	O
in	O
a	O
number	O
of	O
small	O
systems	O
ranging	O
from	O
8-bit	O
computers	O
to	O
integrated	O
systems	O
on	O
microcontrollers	O
,	O
including	O
sensor	B-Architecture
network	I-Architecture
nodes	O
.	O
</s>
<s>
The	O
RPL	B-Protocol
protocol	O
is	O
implemented	O
in	O
other	O
operating	O
systems	O
,	O
such	O
as	O
:	O
</s>
<s>
LiteOS	B-Operating_System
is	O
an	O
edition	O
of	O
the	O
Zorin	O
OS	O
operating	O
system	O
designed	O
for	O
low-resource	O
computers	O
,	O
developed	O
in	O
principle	O
for	O
calculators	O
,	O
but	O
which	O
has	O
also	O
been	O
used	O
for	O
sensor	B-Architecture
networks	I-Architecture
.	O
</s>
<s>
TinyOs	B-Device
was	O
the	O
first	O
operating	O
system	O
oriented	O
to	O
the	O
wireless	B-Architecture
sensor	I-Architecture
network	I-Architecture
(	O
WSN	B-Architecture
)	O
,	O
works	O
through	O
events	O
and	O
guided	O
tasks	O
,	O
and	O
uses	O
an	O
extension	O
of	O
the	O
C	O
language	O
,	O
called	O
nesC	O
.	O
</s>
<s>
TinyOS	B-Device
is	O
implemented	O
as	O
a	O
set	O
of	O
cooperating	O
tasks	O
and	O
processes	O
and	O
it	O
determines	O
the	O
priorities	O
between	O
tasks	O
and	O
events	O
.	O
</s>
<s>
T-Kernel	B-Operating_System
is	O
an	O
operating	O
system	O
that	O
accepts	O
applications	O
as	O
executable	O
images	O
in	O
basic	O
instructions	O
.	O
</s>
<s>
Therefore	O
,	O
it	O
will	O
not	O
matter	O
if	O
it	O
is	O
written	O
in	O
C++	B-Language
or	O
Assembly	O
language	O
.	O
</s>
<s>
EyeOS	B-Application
is	O
defined	O
as	O
a	O
desktop	O
environment	O
based	O
on	O
Web	O
,	O
which	O
allows	O
monitoring	O
and	O
access	O
to	O
a	O
remote	O
system	O
through	O
a	O
simple	O
search	O
engine	O
.	O
</s>
<s>
RIOT	B-Device
is	O
a	O
small	O
operating	O
system	O
for	O
networked	O
,	O
memory-constrained	O
systems	O
with	O
a	O
focus	O
on	O
low-power	O
wireless	O
Internet	O
of	O
Things	O
(	O
IoT	O
)	O
devices	O
.	O
</s>
