Foundation Summary 167
Foundation Summary
This section is a collection of tables that provide a convenient review of many key concepts in
this chapter. If you are already comfortable with the topics in this chapter, this summary might
help you recall a few details. If you have just read this chapter, this review should help solidify
some key facts. If you are doing your final preparation before the exam, Tables 5-10 through
5-12 are a convenient way to review the day before the exam.
Table 5-10
Subnet Configuration
Subnet Mask
Number of Subnets
Number of Hosts Per Subnet
255.255.192.0
2
16,382
255.255.224.0
6
8190
255.255.240.0
14
4094
255.255.248.0
30
2046
255.255.252.0
62
1022
255.255.254.0
126
510
255.255.255.0
254
254
255.255.255.128
510
126
255.255.255.192
1022
62
255.255.255.224
2046
30
255.255.255.240
4094
14
255.255.255.248
8190
6
255.255.255.252
16,382
2
Table 5-11
RFC 1918 Private Network Addresses
Class
Address
Comments
A
10.0.0.010.255.255.255
Provides unlimited growth and scalability
B
172.16.0.0172.31.0.0
Best fit in medium-size networks
C
192.168.0.0192.168.255.0
Great for small networks
Table 5-12
IP Addresses: Decimal and Binary
Decimal Address
Binary Address
10.1.1.1
00001010 00000001 00000001 00000001
172.16.32.2
10101100 00010000 00100000 00000010
201.245.221.214
11001001 11110101 11011101 11010110
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