Remembering IP classes

Question 1

Class A

Answer 1

1 to 126 (subnet mask 255.0. 0.0)

Question 2

Class B

Answer 2

128 to 191 (subnet mask 255.255. 0.0)

Question 3

Class C

Answer 3

192 to 223 (subnet mask 255.255. 255.0)

Question 4

True or false? An address of 10.20.30.88 is a Class C address.

Answer 4

Answer: False. This address is a Class A address.

Class A - 1 to 126 (subnet mask 255.0. 0.0)

Question 5

IP addresses are grouped into logical divisions called ___.

Answer 5

classes

Question 6

The IPv4 address space has five address classes: __ through __.

Answer 6

A

E

Question 7

IPv4 Class D is reserved for ___ addressing, and Class E is reserved for ___ development.

Answer 7

multicast

future

Question 8

Of the three classes available for IPv4 address assignments, each uses a fixed-length ___ ___ to define the separation between the network and the node address.

Answer 8

subnet mask

Question 9

A Class A IPv4 address uses __ octet to represent the network portion; a Class B address uses __ octets; a Class C address uses __ octets.

Answer 9

1
2
3

Question 10

Class A has a small number of ___ addresses, but each Class A address has a large number of possible ___ addresses.

Answer 10

network

host

Question 11

Compared to Class A addresses, Class B has a larger number of ___, but each Class B address has a smaller number of ___.

Answer 11

networks

hosts

Question 12

Class C has a large number of ___, but each Class C address has a small number of ___.

Answer 12

networks

hosts

Question 13

Class A IPv4 addresses are in the range of __ to __.

Answer 13

1 to 126

Question 14

Class B IPv4 addresses are in the range of __ to __.

Answer 14

128 to 191

Question 15

Class C IPv4 addresses are in the range of __ to __.

Answer 15

192 to 223

Question 16

Class D IPv4 addresses are in the range of __ to __.

Answer 16

224 to 239

Question 17

Class E IPv4 addresses are in the range of __ to __.

Answer 17

240 to 255

Question 18

The 127.0.0.1 network ID is reserved for the IPv4 local ___.

Answer 18

loopback

Question 19

Like an IP address, a subnet mask is most commonly expressed in __-bit dotted-decimal format.

Answer 19

32-bit

Question 20

A subnet mask performs only one function: to define which parts of the IP address refer to the ___ address and which refer to the ___ address.

Answer 20

network

node

Question 21

Class A IPv4 addresses have a subnet mask of ___.

Answer 21

255.0.0.0

Question 22

Class B IPv4 addresses have a subnet mask of ___.

Answer 22

255.255.0.0

Question 23

Class C IPv4 addresses have a subnet mask of ___.

Answer 23

255.255.255.0

Question 24

Class A private addresses are in the range of __ to __, with a subnet mask of ___.

Answer 24

10. 0.0.0 to 10.255.255.255

255. 0.0.0

Question 25

Class B private addresses are in the range of __ to __, with a subnet mask of ___.

Answer 25

172. 16.0.0 to 172.31.255.255

255. 255.0.0

Question 26

Class C private addresses are in the range of __ to __, with a subnet mask of ___.

Answer 26

192. 168.0.0 to 192.168.255.255

255. 255.255.0