Chapter 3 - Subnetting and Class C Addresses
Cisco & IP Addressing
Louis D. Rossi, Louis R. Rossi and Thomas Rossi
Copyright © 1999 The McGraw-Hill Companies, Inc.
Answers
3.1:
2
5
–2 = 30
3.2:
2
6
–2= 62
3.3:
There would be no addressing space left for hosts.
3.4:
Given a Class C address, the mask value for:
a)
2-bit mask: 255.255.255.192
b)
3-bit mask: 255.255.255.224
c)
4-bit mask: 255.255.255.240
d)
5-bit mask: 255.255.255.248
e)
6-bit mask: 255.255.255.252
3.5:
Host Address
Class
Mask
Wire Address
Broadcast Address
194.24.64.78
C
255.255.255.248
194.24.64.72
194.24.64.79
201.10.56.34
C
255.255.255.224
201.10.56.32
201.10.56.63
192.34.23.5
C
255.255.255.252
192.34.23.4
192.34.23.7
210.10.10.134
C
255.255.255.240
210.10.10.128
210.10.10.143
223.12.4.34
C
255.255.255.248
223.12.4.32
223.12.4.39
3.6:
Books24x7.com, Inc © 2000 –
Feedback