1. Answer 5
a.
i.
Giventhe network address17.0.0.0, findthe class,the block,and the range of the
addresses.
Solution
The classis A becausethe firstbyte isbetween 0 and127. The block hasa netid of 17. The
addressesrange from 17.0.0.0 to 17.255.255.255.
ii.
Giventhe network address132.21.0.0, findthe class, the block,and the range of the
addresses.
Solution
The classis B because the first byte is between 128 and191. The block has a netidof 132.21. The
addressesrange from 132.21.0.0 to 132.21.255.255.
b.
An organizationisgranteda block ofaddresses with the beginningaddress14.24.74.0/24. There
are 232−24
= 256 addressesin thisblock. The organizationneedsto have 11 subnets as shown below:
a. two subnets,each with 64 addresses.
b. two subnets,each with 32 addresses.
c. three subnets,each with 16 addresses.
d. four subnets,each with4 addresses.
Design the subnets.

2. c.
An ISP is granteda block of addressesstartingwith 190.100.0.0/16 (65,536 addresses).The ISP
needs to distributethese addressesto three groupsof customersas follows:a
a. The firstgroup has64 customers; each needs 256 addresses.
b. The secondgroup has128 customers;each needs 128 addresses
c. The thirdgroup has128 customers; each needs 64 addresses.