1 - examen-subnet - unach

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

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ACADEMIA CISCO


UNACH

EXAMEN ESCRITO SUBNETTING


ALUMNO :

__
Pilco Rubén
_______________________________


1. Your network is divided into 8 subnets and uses a class B network ID. Each subnet should
allow for at least 2500 hosts. Which subnet mask should yo
u assign?

a.255.248.0.0

b.255.255.240.0

c.255.255.248.0

d.255.255.255.255

e.255.255.224.0

f.255.255.252.0

g.172.16.252.0


2. Which of the following are important factors when designing an IP addressing scheme?
(select 2)

a.

The number of hosts

b.

The numb
er of name servers

c.

The number of subnets

d.

The location of internet access points

e.

The location of name servers


3. Which one of the following does not belong to the same subnet as the other three when using
255.255.224.0 as the subnet mask?

a.172.1
6.66.24

b.172.16.65.33

c.172.16.64.42

d.172.16.63.51


4. Which of the following are valid class B addresses?
(select 3)

a.10011001.01111000.01101101.11111000

b.01011001.11001010.11100001.01100111

c.10111001.11001000.00110111.01001100

d.11011001.01001010.01
101001.00110011

e.10011111.01001011.00111111.00101011


5. What is 191.168.10.11 converted to binary?

a.10111001.10101000.00001010.00001011

b.11000001.10101100.00001110.00001011

c.10111111.10101000.00001010.00001011

d.10111111.10101001.00001010.00001011

e.
01111111.10101000.00001011.00001011

f.10111111.10101000.00001011.00001011


6. Given a class B Network ID 172.17.111.0 and subnet mask 255.255.254.0, how many
subnets and how many hosts per subnet will this allow for?

a.126 subnets with each 512 hosts

b.12
8 subnets with each 510 hosts

c.126 subnets with each 510 hosts

d.126 subnets with each 1022 hosts


7. What is 00001010.10101001.00001011.10001011 converted to decimal?

a.192.169.13.159

b.10.169.11.139

c.10.169.11.141

d.10.137.11.130

e.192.137.9.149


8. Y
ou are designing an IP addressing scheme for a large network with 4 subnets. You expect
to add a subnet each year for the next 4 years? The network ID is 10.1.1.0. What subnet mask
should you assign to allow for the maximum amount of hosts per subnet?

a.2
55.0.0.0

b.255.254.0.0

c.255.240.0.0

d.255.255.255.0


9. Which of the following is a valid private class A address?

a.00001010.01111000.01101101.11111000

b.00001011.11111010.11100001.01100111

c.00101010.11001000.11110111.01001100

d.00000010.01001010.01101
001.11110011


10. Given the IP address 172.18.71.2 and the subnet mask 255.255.248.0, what is the network
ID and the broadcast address for the subnet where this host is located?

a.network ID = 172.18.64.0, broadcast address is 172.18.80.255

b.network ID =

172.18.32.0, broadcast address is 172.18.71.255

c.network ID = 172.18.32.0, broadcast address is 172.18.80.255

d.network ID = 172.18.64.0, broadcast address is 172.18.71.255


11. Your class B network is divided into 20 subnets and you will add 30 next mon
th. Which
subnet mask should you use to allow for at least 800 hosts per subnet?

a.255.248.0.0

b.255.255.252.0

c.255.255.224.0

d.255.255.248.0


12. Your class B network is divided into 20 subnets and you will add 4 next week. Which subnet
mask should you
use to allow for at least 2000 hosts per subnet?

a./19

b./21

c./22

d./24


13. What is the following subnet mask in dotted notation: /24

a.255.0.0.0

b.224.0.0.0

c.255.255.0.0

d.255.255.255.0


14. Given the IP address 192.168.85.129 and the subnet mask 255
.255.255.192, what is the
network ID and the broadcast address for the subnet where this host is located?

a.

network ID = 192.168.85.128, broadcast address is 192.168.85.255

b.

network ID = 192.168.84.0, broadcast address is 192.168.92.255

c.

network ID =

192.168.85.129, broadcast address is 192.168.85.224

d.

network ID = 192.168.85.128, broadcast address is 192.168.85.191


15. Given a Class C Network ID 192.168.1.0 and subnet mask 255.255.255.252, how many
subnets and how many hosts per subnet will this a
llow for?

a.62 subnets with each 2 hosts

b.126 subnets with each 4 hosts

c.126 subnets with each 6 hosts

d.30 subnets with each 6 hosts

e.2 subnets with each 62 hosts


16.
What statement about the IP address 0.10.10.10 is most correct? (Choose one.)

a) T
his a Class A address.

b) This a reserved private address
.

c) For a Class A address, indicates "this route."

d) This is not a legal address.

e) This address can only be used for a network that is not exposed to the Internet.


17.

What is the network that
host 135.10.17.67 255.255.240.0 resides on?

a) 135.10.0.0

b) 135.10.240.0

c) 135.10.16.0

d) 135.10.240.0

e) None of the above


18. What does the address 212.10.14.63 /27 represent?

a) host

b) wire

c) network

d) broadcast

e) None of the above


19.

Consider
ing the address of 10.6.165.0 and the mask of 255.255.224.0, what is the range of
valid host addresses that sit on this wire?

a) 10.6.165.1 to 10.6.165.254

b) 10.6.165.0 to 10.6.165.255

c) 10.6.160.1 to 10.6.191.255

d) 10.6.160.1 to 10.6.191.254

e) None of

the above


20.

Given the following address and mask, what would be the broadcast address of the subnet?
172.16.0.125/20

a) 172.16.15.255

b) 172.16.0.255

c) 172.16.255.255

d) 255.255.255.255

e) None of the above