Subnetting Questions

Subnetting Questions

ITE PC v4.0 Chapter 1

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

1

Identify the Number of Subnets and Hosts
1. You have been assigned the IP network address of 135.65.0.0 and have selected 255.255.240.0 as the subnet mask. How many valid subnet addresses are available? 2. You have a network address of 132.66.0.0 and a subnet mask of 255.255.240.0. Find the number of the valid subnets and how many possible host addresses are on each subnet excluding addresses of all 1s and all 0s. 3. You have a network address of 165.35.0.0 and have selected 255.255.192.0 as the subnet mask value. How many possible subnets are there?
ITE PC v4.0 Chapter 1

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

2

Identify the Number of Subnets and Hosts
1. You have a network address of 220.16.22.0 and have selected 255.255.255.224 as the subnet mask value. How many possible subnets are there?

2. You have a network address of 199.112.199.0 and have selected 255.255.255.240 as the subnet mask value. How many possible subnets are there?
3. You have a network address of 133.233.11.0 and have selected 255.255.255.240 as the subnet mask value. How many possible hosts are on each subnet, excluding subnet address and broadcast address?

ITE PC v4.0 Chapter 1

© 2007 Cisco Systems, Inc. All rights reserved.

Cisco Public

3

Select a Subnet Mask
1. Your client has a class B network address and needs to support 500 hosts on as many subnets as possible. Which subnet mask should you recommend?
2. Your client has a class B IP network address and needs to support 60 hosts on as many subnets as possible. Which subnet mask should you recommend? 3. You are configuring a network and have been assigned the network address of 212.109.55.0. You want to subnet the network to allow for 10 subnets with 7 hosts per subnet. What subnet mask should you use? 4. Your network has been assigned the IP address of 131.66.0.0