Computer Science

Use the following tables as references for the remainder of the document.

IP Address Classes
Class A 1-127 Leading bit pattern 0 Network.Host.Host.Host
Class B 128-191 Leading bit pattern 10 Network.Network.Host.Host
Class C 224-239 Leading bit pattern 110 Network.Network.Network.Host
Class D 224-230 Reserved for multicast
Class E 240-255 Reserved for experimental, used for research.
Private Addresses
Class A 10.0.0.0 – 10.255.255.255
Class B 172.16.0.0 – 172.31.255.255
Class C 192.168.0.0 – 192.168.255.255
APIPA 169.254.0.1 – 169.254.255.254

Binary to Decimal Conversion

128 64 32 16 8 4 2 1 Answers
0 0 0 1 1 0 1 1
0 0 1 1 1 0 1 1
1 1 1 1 0 0 0 0
0 0 1 1 0 0 0 1
1 0 0 0 1 0 0 0
1 0 1 0 1 0 1 0
0 1 1 0 1 1 0 1
1 0 0 1 1 0 0 1
1 1 0 1 0 1 1 0

Decimal to Binary Conversion

128 64 32 16 8 4 2 1 Problem
200
255
107
224
192
98
242
224
172
100

Address Classes

Address Class
148.17.9.1
220.200.23.1
177.100.15.4
249.241.80.78
198.155.72.56
10.0.0.1
192.168.123.42
123.231.132.9
42.42.42.42
242.81.64.3

Network Identification

Highlight the Network Portion:

117. 89. 56. 90
33. 0. 0. 2
10. 252 1. 1
150. 15. 16. 3
192. 168. 123. 1
199. 155. 66. 56
242. 200. 23. 1
158. 200. 45. 62
218. 155. 230. 41
100. 25. 1. 1
Highlight the Host Portion

117. 89. 56. 90
33. 0. 0. 2
10. 252 1. 1
150. 15. 16. 3
192. 168. 123. 1
199. 155. 66. 56
242. 200. 23. 1
158. 200. 45. 62
218. 155. 230. 41
100. 25. 1. 1

Network Addressing

Write the network addresses for the provided IP address/subnet mask.

10.10.48.80 255.255.255.0
10.10.10.10 255.0.0.0
27.125.200.151 255.0.0.0
199.203.32.91 255.255.255.0
186.31.32.110 255.255.0.0
192.168.24.19 255.255.0.0
15.30.20.20 255.255.255.0
27.0.2.1 255.0.0.0
164.42.3.4 255.255.255.0
25.25.142.8 255.0.0.0

Host Addresses

Using the IP address and subnet mask shown, write the host address

10.10.48.80 255.255.255.0
10.10.10.10 255.0.0.0
27.125.200.151 255.0.0.0
199.203.32.91 255.255.255.0
186.31.32.110 255.255.0.0
192.168.24.19 255.255.0.0
15.30.20.20 255.255.255.0
27.0.2.1 255.0.0.0
164.42.3.4 255.255.255.0
25.25.142.8 255.0.0.0

Default Subnet Mask

Write the correct default subnet mask for each

10.10.48.80 255.255.255.0
10.10.10.10 255.0.0.0
27.125.200.151 255.0.0.0
199.203.32.91 255.255.255.0
186.31.32.110 255.255.0.0
192.168.24.19 255.255.0.0
15.30.20.20 255.255.255.0
27.0.2.1 255.0.0.0
164.42.3.4 255.255.255.0
25.25.142.8 255.0.0.0

Custom Subnet Masks

Fill in the blanks

Required Subnets 14
Required Hosts 14
Network Address 192.10.10.0
Address Class
Default Subnet Mask
Custom Subnet Mask
Total Number of Subnets
Total Number of Host Addresses
Number of Usable Addresses
Number of Bits Borrowed
What is the 10th Subnet Range?
What is the subnet number for the 2nd Subnet?
What is the broadcast address for the 12th Subnet?
What are the usable addresses for the 10th Subnet?
Required Subnets 1000
Required Hosts 60
Network Address 156.100.0.0
Address Class
Default Subnet Mask
Custom Subnet Mask
Total Number of Subnets
Total Number of Host Addresses
Number of Usable Addresses
Number of Bits Borrowed
What is the 10th Subnet Range?
What is the subnet number for the 2nd Subnet?
What is the broadcast address for the 12th Subnet?
What are the usable addresses for the 100th Subnet?
Required Subnets 6
Required Hosts 28
Network Address 182.86.7.0
Address Class
Default Subnet Mask
Custom Subnet Mask
Total Number of Subnets
Total Number of Host Addresses
Number of Usable Addresses
Number of Bits Borrowed
What is the 3rd Subnet Range?
What is the subnet number for the 2nd Subnet?
What is the broadcast address for the 1st Subnet?
What are the usable addresses for the 6th Subnet?
Required Subnets 2000
Required Hosts 15
Network Address 187.112.0.0
Address Class
Default Subnet Mask
Custom Subnet Mask
Total Number of Subnets
Total Number of Host Addresses
Number of Usable Addresses
Number of Bits Borrowed
What is the 100th Subnet Range?
What is the subnet number for the 200th Subnet?
What is the broadcast address for the 42nd Subnet?
What are the usable addresses for the 10th Subnet?
Required Subnets 412
Required Hosts 1000
Network Address 128.47.0.0
Address Class
Default Subnet Mask
Custom Subnet Mask
Total Number of Subnets
Total Number of Host Addresses
Number of Usable Addresses
Number of Bits Borrowed
What is the 10th Subnet Range?
What is the subnet number for the 42nd Subnet?
What is the broadcast address for the 300th Subnet?
What are the usable addresses for the 12th Subnet?

Create the subnetting table for each subnet required for your corporate network.

Required Subnets
Required Hosts
Network Address
Address Class
Default Subnet Mask
Custom Subnet Mask
Total Number of Subnets
Total Number of Host Addresses
Number of Usable Addresses
Number of Bits Borrowed
What are the usable addresses for the 1st Subnet?
What are the usable addresses for the 2nd Subnet?
What are the usable addresses for the 3rd Subnet?
What are the usable addresses for the 4th Subnet?
What are the usable addresses for the 5th Subnet?

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