<s>
Flat	B-Device
Neighborhood	I-Device
Network	I-Device
(	O
FNN	O
)	O
is	O
a	O
topology	B-Architecture
for	O
distributed	B-Architecture
computing	I-Architecture
and	O
other	O
computer	O
networks	O
.	O
</s>
<s>
Each	O
node	B-Protocol
connects	O
to	O
two	O
or	O
more	O
switches	B-Protocol
which	O
,	O
ideally	O
,	O
entirely	O
cover	O
the	O
node	B-Protocol
collection	O
,	O
so	O
that	O
each	O
node	B-Protocol
can	O
connect	O
to	O
any	O
other	O
node	B-Protocol
in	O
two	O
"	O
hops	O
"	O
(	O
jump	O
up	O
to	O
one	O
switch	O
and	O
down	O
to	O
the	O
other	O
node	B-Protocol
)	O
.	O
</s>
<s>
This	O
contrasts	O
to	O
topologies	B-Architecture
with	O
fewer	O
cables	O
per	O
node	B-Protocol
which	O
communicate	O
with	O
remote	O
nodes	O
via	O
intermediate	B-Protocol
nodes	I-Protocol
,	O
as	O
in	O
Hypercube	O
(	O
see	O
The	B-Device
Connection	I-Device
Machine	I-Device
)	O
.	O
</s>
