# Lab 10.3.2 – How Many Networks? (Answers)

## Lab 10.3.2 – How Many Networks? (Answers)

### Learning Objectives

Upon completion of this lab, you will be able to:

• Determine the number of subnets.
• Design an appropriate addressing scheme.
• Examine the use of the available network address space.

### Scenario

In this lab, you have been given the network address 192.168.26.0/24 to subnet and provide the IP addressing for the networks shown in the Topology Diagrams. You must determine the number of networks needed then design an appropriate addressing scheme. Place the correct address and mask in the Addressing Table. In this example, the number of hosts is not important. You are only required to determine the number of subnets per topology example.

### Task 1: Determine the Number of Subnets in the Topology Diagram.

Step 1: How many networks are there? 2

Step 2: How many bits should you borrow to create the required number of subnets? 1

Step 3: How many usable host addresses per subnet did this give you? 126

Step 4: What is the new subnet mask in decimal form? 255.255.255.128

Step 5: How many subnets are available for future use? 0

### Task 2: Record Subnet Information.

Step 1: Fill in the following chart with the subnet information.

0 192.168.26.0 192.168.26.1 192.168.26.126 192.168.26.127
1 192.168.26.128 192.168.26.129 192.168.26.254 192.168.26.255
2
3
4
5
6
7

### Task 3: Determine the Number of Subnets in the Topology Diagram.

Step 1: How many networks are there? 4

Step 2: How many bits should you borrow to create the required number of subnets? 2

Step 3: How many usable host addresses per subnet did this give you? 62

Step 4: What is the new subnet mask in decimal form? 255.255.255.192

Step 5: How many subnets are available for future use? 0

### Task 4: Record Subnet Information.

Step 1: Fill in the following chart with the subnet information.

0 192.168.26.0 192.168.26.1 192.168.26.62 192.168.26.63
1 192.168.26.64 192.168.26.65 192.168.26.126 192.168.26.127
2 192.168.26.128 192.168.26.129 192.168.26.190 192.168.26.191
3 192.168.26.192 192.168.26.193 192.168.26.254 192.168.26.255
4
5
6
7

### Task 5: Determine the Number of Subnets in the Topology Diagram.

Step 1: How many networks are there? 6

Step 2: How many bits should you borrow to create the required number of subnets? 3

Step 3: How many usable host addresses per subnet did this give you? 30

Step 4: What is the new subnet mask in decimal form? 255.255.255.224

Step 5: How many subnets are available for future use? 2

### Task 6: Record Subnet Information.

Step 1: Fill in the following chart with the subnet information.

0 192.168.26.0 192.168.26.1 192.168.26.30 192.168.26.31
1 192.168.26.32 192.168.26.33 192.168.26.62 192.168.26.63
2 192.168.26.64 192.168.26.65 192.168.26.94 192.168.26.95
3 192.168.26.96 192.168.26.97 192.168.26.126 192.168.26.127
4 192.168.26.128 192.168.26.129 192.168.26.158 192.168.26.159
5 192.168.26.160 192.168.26.161 192.168.26.190 192.168.26.191
6 192.168.26.192 192.168.26.193 192.168.26.222 192.168.26.223
7 192.168.26.224 192.168.26.225 192.168.26.254 192.168.26.255
8
9
10

### Task 7: Determine the Number of Subnets in the Topology Diagram.

Step 1: How many networks are there? 12

Step 2: How many bits should you borrow to create the required number of subnets? 4

Step 3: How many usable host addresses per subnet did this give you? 14

Step 4: What is the new subnet mask in decimal form? 255.255.255.240

Step 5: How many subnets are available for future use? 4

### Task 8: Record Subnet Information.

Step 1: Fill in the following chart with the subnet information.

0 192.168.26.0 192.168.26.1 192.168.26.14 192.168.26.15
1 192.168.26.16 192.168.26.17 192.168.26.30 192.168.26.31
2 192.168.26.32 192.168.26.33 192.168.26.46 192.168.26.47
3 192.168.26.48 192.168.26.49 192.168.26.62 192.168.26.63
4 192.168.26.64 192.168.26.65 192.168.26.78 192.168.26.79
5 192.168.26.80 192.168.26.81 192.168.26.94 192.168.26.95
6 192.168.26.96 192.168.26.97 192.168.26.110 192.168.26.111
7 192.168.26.112 192.168.26.113 192.168.26.126 192.168.26.127
8 192.168.26.128 192.168.26.129 192.168.26.142 192.168.26.143
9 192.168.26.144 192.168.26.145 192.168.26.158 192.168.26.159
10 192.168.26.160 192.168.26.161 192.168.26.174 192.168.26.175
11 192.168.26.176 192.168.26.177 192.168.26.190 192.168.26.191
12 192.168.26.192 192.168.26.193 192.168.26.206 192.168.26.207
13 192.168.26.208 192.168.26.209 192.168.26.222 192.168.26.223
14 192.168.26.224 192.168.26.225 192.168.26.238 192.168.26.239
15 192.168.26.240 192.168.26.241 192.168.26.254 192.168.26.255
16

What information is needed when determining an appropriate addressing scheme for a network?
Number of networks and hosts are needed when determining an appropriate addressing scheme for a network.

Subscribe
Notify of