Skills Exam Subnetting Practice Key

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24 Οκτ 2013 (πριν από 3 χρόνια και 10 μήνες)

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Skills Exam Subnetting Practice

Key



A)

Given a network
Address

of
192.168.100.0
,
you need to create at least 4
usable
subnet
s which will support up to 30 host addresses each.


Class of Address:





C


Default subnet mask:




255.255.255.0

How many bits
need to be left in host field:

5

(2
5

=
32 hosts, 30 usable
)

How many bits need to be borrowed:


3

(2
3

=
8 subnets,
6 usable)

Custom
Subnet Mask
:




255.255.255.224

(255.255.255.11100000)


List the
following information for the 1
st

8
subnets

(including the Zero subnet)



Subnet
Address

Range of Host addresses

Broadcast Address

0

192.168.100.0

192.168.100.1
-

192.168.100.30

192.168.100.31

1

192.168.100.32

192.168.100.33
-
192.168.100.62

192.168.100.63

2

192.168.100.64

192.168.100.65
-
192.168.100.94

192.168.100.95

3

192.168.100.96

192.168.100.97
-
192.168.100.126

192.168.100.127

4

192.168.100.128

192.168.100.129
-
192.168.100.158

192.168.100.159

5

192.168.100.160

192.168.100.161
-
192.168.100.190

192.168.100.191

6

192.168.100.192

192.168.100.193
-
192.168.100.222

192.168.100.223

7

192.168.100.224

192.168.100.225
-
192.168.100.254

192.168.100.255


B)
Apply the subnetting scheme to the following network diagram:



Assign

the
1
st

usable subnet

to

the
WAN link

between GAD and Anniston

o

Assign GAD’s serial interface the
1
st

usable

host address on this subnet

o

Assign Anniston’s serial interface the
2
nd

usable

host address on this
subnet



Assign

the
2
nd

usable subnet

to the
WAN
link

between GAD and Boaz

o

Assign GAD’s serial interface the
1
st

usable

host address on this subnet

o

Assign Boaz’s serial interface the
2
nd

usable

host address on this subnet



Assign

the
3
rd

usable subnet

to
Anniston’s LAN


o

Assign the
first

usable

host addre
ss on this subnet to the router’s Ethernet
interface

o

Assign the management station a host address in the
lower

½

of the
address range

o

Assign the production station a host address in the
upper

½

of the address
range



Assign

the
4th usable subnet

to
Boaz’s LA
N


o

Assign the
first

usable

host address on this subnet to the router’s Ethernet
interface

o

Assign the management station a host address in the
lower

½

of the
address range

o

Assign the production station a host address in the
upper

½

of the address
range



GAD
S 0/0 (DCE)

IP

Address:

192.168.100.33

Subnet Mask:

255.255.255.224

S 0/1 (DCE)

IP

Address:

192.168.100.65

Subnet Mask:

255.255.255.224


Anniston
S 0/0 (D
T
E)

IP

Address:

192.168.100.34

Subnet Mask:

255.255.255.224


Boaz
S 0/0 (D
T
E)

IP

Address:

192.168.100.66

Subnet Mask:

255.255.255.224




Fa 0/0


IP

Address:

192.168.100.97

Subnet Mask:

255.255.255.224


Fa 0/0


IP

Address:

192.168.100.129

Subnet Mask:

255.255.255.224


Management 1

IP

Address:

192.168.100.100

Subnet Mask:

255.255.255.224

Default Gateway:
192.168.100.97


Production 1

IP

Address:

192.168.100.120

Subnet Mask:

255.255.255.224

Default Gateway:
192.168.100.97


Production 2

IP

Address:

192.168.100.155

Subnet Mask:

255.255.255.224

Default Gateway:
192.168.100.129


Management 2

IP

Address:

192.168.100.135

Subnet Mask:

255.255.255.224

Default Gateway:
192.168.100.129