Classful Addressing

Question 1

what are the 5 classes in classful addressing

Answer 1

A B C D E

Question 2

what is byte 1 of class A address

Answer 2

0

Question 3

what is byte 1 of class B address

Answer 3

10

Question 4

what is byte 1 of class C address

Answer 4

110

Question 5

what is byte 1 of class D address

Answer 5

1110

Question 6

what is byte 1 of class E address

Answer 6

1111

Question 7

what is byte 1 of class A address in dotted decimal notation

Answer 7

0-127

Question 8

what is byte 1 of class B address in dotted decimal notation

Answer 8

128-191

Question 9

what is byte 1 of class C address in dotted decimal notation

Answer 9

192-223

Question 10

what is byte 1 of class D address in dotted decimal notation

Answer 10

224-239

Question 11

what are the classes mainly used for general purpose

Answer 11

A B C

Question 12

what is the use of class D

Answer 12

multicast

Question 13

what is the purpose of class E

Answer 13

experimental

Question 14

How much of class A address is host portion

Answer 14

last 3 bytes

255.0.0.0

Question 15

How much of class B address is host portion

Answer 15

last 2 bytes

255.255.0.0

Question 16

How much of class C address is host portion

Answer 16

last byte`

255.255.255.0

Question 17

How much of class A address is network portion

Answer 17

first byte

255.0.0.0

Question 18

How much of class B address is network portion

Answer 18

first two bytes

255.255.0.0

Question 19

How much of class C address is network portion

Answer 19

first 3 bytes

255.255.255.0

Question 20

to belong in the same network, what portion of a classful address must be the same

Answer 20

the network portion

Question 21

what are switches

Answer 21

make communication possible within a network

Question 22

what are routers

Answer 22

make communication possible between networks

Question 23

what is the purpose of the subnet mask

Answer 23

used to define the network and host portion of an IP address

used in conjunction with IP address

Question 24

what is the first address in a network

Answer 24

the network address

Question 25

what is the last address in a network

Answer 25

broadcast

Question 26

what two addresses in the network cannot be used

Answer 26

first and last

Question 27

what sort of organisations use class A addresses and why

Answer 27

international organisations limited number of very large networks (many hosts)

Question 28

what sort of organisations use class B addresses and why

Answer 28

large companies limited number of relatively large networks

Question 29

what sort of organisations use class C addresses and why

Answer 29

smaller companies large number of networks with few hosts