Q
ue
s
t
i
on:
 
VTP实验题
T
h
i
s
 
task 
r
e
qu
i
r
e
s
you to
use
the
CLI of 
Sw-AC3 to
answer
i
v
e
 
m
u
l
t
i
p
l
e
-
c
ho
i
c
e
 
qu
e
s
t
i
on
s
.
 
T
h
i
s
 
does
not
r
e
qu
i
r
e
 
a
n
y
 
c
on
i
gu
r
a
t
i
on.
 To
answer
the
m
u
l
t
i
p
l
e
-
c
ho
i
c
e
 
qu
e
s
t
i
on
s
,
 
c
li
c
on the
numbered boxes
i
n
the
r
i
gh
t
p
a
n
e
l
.
 There are
i
v
e
 
m
u
l
t
i
p
l
e
-
c
ho
i
c
e
 
qu
e
s
t
i
on
s
 
w
i
t
h
t
h
i
s
 
task.
Be
sure
to
answer
a
ll
 
i
v
e
 
qu
e
s
t
i
on
s
 
b
e
o
r
e
l
ea
v
i
ng
t
h
i
s
 
i
t
e
m
.
 
Question
1
:
 What
i
n
t
e
r
a
c
e
 
d
i
d
Sw-AC3
a
ss
o
c
i
a
t
e
 
w
i
t
h
 
source
MAC
address
0010.5
a
0
c
.
ff 
b
a
 
?
 a)Fa0/1b) Fa0/3
c
)
Fa0/6d) Fa0/8
e
)
Fa0/9
)
 
Fa
0
 / 
12
 
Answer:
Fa
0
 / 
8
 
Explanation:
to
find
out
w
h
i
c
h
 
i
n
t
e
r
a
c
e
 
a
ss
o
c
i
a
t
e
d
 
w
i
t
h
a
g
i
v
e
n
MAC
address, use
the
show
mac-
a
ddr
e
ss
-
t
a
bl
e
 
command.
It
shows
the
l
ea
r
n
e
d
MAC
addresses
and t
h
e
i
r
 
a
ss
o
c
i
a
t
e
d
 
i
n
t
e
r
a
c
e
s
.
 
A
t
e
r
e
n
t
e
r
i
ng
t
h
i
s
 
command,
you
will
s
ee
a MAC
address t
a
b
l
e
 
li
e
t
h
i
s
: 
 
 
From t
h
i
s
t
a
b
l
e
we can
i
gu
r
e
out that the MAC
address
0010.5
a
0
c
.
ff 
b
a
 
i
s
 
a
ss
o
c
i
a
t
e
d
 
w
i
t
h
 
i
n
t
e
r
a
c
e
 
Fa
0
 / 
8
 
Question
2
:
 What
ports
on Sw-AC3 are
op
e
r
a
t
i
ng
 
has trunks (choose th
r
ee
)
?
 a)Fa0/1b) Fa0/3
c
)
Fa0/4d)Fa0/6
e
)
Fa0/9
)
 
Fa
0
 / 
12
 
Answer:
Fa0/3, Fa0/9 and
F
a
0
 / 
12
 
Explanation:Use
the
show interface trunk 
command
to
d
e
t
e
r
m
i
n
e
the t
r
un
i
ng
 
status
of 
a
li
n
and
VLAN
status.
Th
i
s
 
command
li
s
t
s
port,
i
t
s
mode,
e
n
c
a
p
s
u
l
a
t
i
on
and
whether
it
i
s
t
r
un
i
ng.
The
i
m
a
g
e
b
e
l
o
w
 
shows
how
it
w
o
rk 
s
: 
Question
3
:
 What
i
nd
 
of 
router
i
s
 
VLA
N-
R
1
?
 a)
1720b
)
1841
c
)
2611d)
2620
 
Answer:
2620
 
Explanation:
VLAN-R1
i
s
the router
d
i
r
e
c
t
l
y
 
connected
to Sw-Ac3
s
w
i
t
c
h,
 
so
we can
use
the
show cdpneighbors
c
o
mm
a
nd
to
s
ee
: 1.
N
e
i
ghbo
r
 
D
e
v
i
c
e
 
ID
: The
name
of 
the
n
e
i
ghbo
r
 
d
e
v
i
c
e
; 2.
L
o
c
a
l
 
I
n
t
e
r
a
c
e
: The
i
n
t
e
r
a
c
e
to
w
h
i
c
h
t
h
i
s
 
n
e
i
ghbo
r
 
i
s
 
h
ea
r
d
 3.
C
a
p
a
b
ili
t
y
:
C
a
p
a
b
ili
t
y
 
of t
h
i
s
 
n
e
i
ghbo
r
i
ng
 
d
e
v
i
c
e
- R
for
router, S
for
s
w
i
t
c
h,
H
for
Host
e
t
c
.
 4.
Platform:
Which
type
of device the
neighbor i
s
 5. Port
ID:
The
i
n
t
e
r
a
c
e
 
of 
the
remote n
e
i
ghbo
r
you
r
e
c
e
i
v
e
CDP
i
n
o
r
m
a
t
i
on
 6.
H
o
l
d
t
i
m
e
:
D
e
c
r
e
m
e
n
t
a
l
 
ho
l
d
t
i
m
e
 
i
n
 
s
e
c
ond
s
 
S
a
m
p
l
e
output
of 
show
cdp
n
e
i
ghbo
r
s
 
c
o
mm
a
nd
: One t
h
i
ng
 
I
want to
no
t
i
c
e
you
i
s
 
"
L
o
c
a
l
 
I
n
t
r
c
e
"
 
i
n
the
i
m
a
g
e
above
r
e
e
r
s
to the
l
o
c
a
l
 
i
n
t
e
r
a
c
e
on the
d
e
v
i
c
e
you
a
r
e
 
r
unn
i
ng
the
"show
cdp
n
e
i
ghbo
r
s
"
 
c
o
mm
a
nd
 
Question
4:
W
h
i
c
h
 
s
w
i
t
c
h
 
i
s
the root
b
r
i
dg
e
 
for VLAN
1
?
 
 
 
Answer:
S
w-D
S
1
 
Explanation:First
we
use
the
show spanning-tree
vlan 1to
v
i
e
w
the
s
p
a
nn
i
ng
-
t
r
ee
 
i
n
o
r
m
a
t
i
on
 
o
 
VLAN
1
 From the
"
C
o
s
t 19", we
l
ea
r
n
that the root
s
w
i
t
c
h
 
i
s
 
d
i
r
e
c
t
l
y
 
connected
to the Sw-Ac3
s
w
i
t
c
h
over
a
 
100Mbps Ethernet
li
n
 
N
o
t
i
c
e
that
if 
you
see
a
ll
 
of 
the
i
n
t
e
r
a
c
e
 
r
o
l
e
s
are
Desg
(
d
e
s
i
gn
a
t
e
d
)
then you can
c
on
i
r
m
 
S
w
-A
c
3
 
s
w
i
t
c
h
 
i
s
the root
b
r
i
dg
e
 
for t
h
i
s
 
VLAN (VLAN
1
)
.
 
If 
you
see
there
i
s
at
l
ea
s
t one Root port
i
n
the
i
n
t
e
r
a
c
e
 
r
o
l
e
s
then you can
c
on
i
r
m
Sw-Ac3
i
s
not the root
b
r
i
dg
e
 
because
r
oo
t
b
r
i
dg
e
 
does
not have root port.
In t
h
i
s
 
case,
we
no
t
i
c
e
that the root port on Sw- Ac3
s
w
i
t
c
h
 
i
s
 
FastEthernet0/12, so
we have t
o
 
i
gu
r
e
out
w
h
i
c
h
 
s
w
i
t
c
h
 
i
s
 
a
ss
o
c
i
a
t
e
d
 
w
i
t
h
t
h
i
s
port ->
it
i
s
theroot
b
r
i
dg
e
.
You can
v
e
r
i
y
 
it
w
i
t
h
the
show cdp
ne
i
ghbor
s
 
c
o
mm
a
nd
: The
"
L
o
c
a
l
 
I
n
t
r
c
e
"
 
c
o
l
u
m
n
 
r
e
e
r
s
to the
i
n
t
e
r
a
c
e
on the
s
w
i
t
c
h
 
r
unn
i
ng
 
"show
cdp
n
e
i
ghbo
r
s
"
 
command.
In t
h
i
s
 
case, S
w-D
S
1
 
i
s
 
a
ss
o
c
i
a
t
e
d
 
w
i
t
h
 
i
n
t
e
r
a
c
e
 
FastEthernet0/12
->
Sw-DS1
i
s
the root
b
r
i
dg
e
Question
5: What
address
s
hou
l
d
be
c
on
i
gu
r
e
d
 
a
s
the
d
e
a
u
l
t
-
g
a
t
e
w
a
y
 
for
the
host connected
to
i
n
t
e
r
a
c
e
 
a
0/4
of 
S
W-
A
c
3
?
 
Answer:
192.168.44.254
 
Ex
pl
a
na
t
i
on:
 
First
we have to
i
d
e
n
t
i
y
 
w
h
i
c
h
 
VLAN
i
n
t
e
r
a
c
e
Fa0/4
b
e
l
ong
s
to by the
show
vlan
c
o
mm
a
nd
 From the
e
x
h
i
b
i
t we know that
VLAN
44
i
s
 
c
on
i
gu
r
e
d
on router
u
s
i
ng
 
s
ub
-
i
n
t
e
r
a
c
e
Fa0/0.44
w
i
t
h
 
I
P
 
address
192.168.44.254
 / 
24
 
 
 
T
h
e
r
e
o
r
e
the
d
e
a
u
l
t
gateway
of 
the
host
s
hou
l
d
be
192.168.44.254
 
Question
6:From
w
h
i
c
h
 
s
w
i
t
c
h
 
d
i
d
Sw-Ac3
r
e
c
e
i
v
e
 
VLAN
i
n
o
r
m
a
t
i
on
 
?
 
Answer:
S
w-
A
C
2
 
Explanation:
to
v
i
e
w
the VTP
c
on
i
gu
r
a
t
i
on
 
i
n
o
r
m
a
t
i
on,
 
use
the
show
vtp
status
c
o
mm
a
nd
 So we knew Sw-Ac3
r
e
c
e
i
v
e
d
 
VLAN
i
n
o
r
m
a
t
i
on
 
r
o
m
163.5.8.3
(
no
t
i
c
e
:t
h
e
 
I
P
 
address
may be
d
i
ff 
e
r
e
n
t
)
.
Fi
n
a
ll
y
we
use t
h
e
 
show cdp neighbors
detailto
find
out who 163.5.8.3
i
s
: 
Question
7:
R
e
e
r
to the
e
x
i
b
i
t
,
SwX
was
taken out
of 
the
p
r
odu
c
t
i
on
network 
for
m
a
i
n
t
e
n
a
n
c
e
.
 
It will
be
reconnected
to t
h
e
 
Fa
0/16 port
of 
Sw-Ac3. What
happens
to the network when
it
i
s
 
reconnected
and atrunk 
e
x
i
s
t
s
 
between
the two
s
w
i
t
c
h
e
s
?
 
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