Network Design

Google

IP Addressing & Subnetting

CCNA Practice Exercise
 
Network Design - IP Addressing:
CCNA Related Links
 
 
 
 

guarantee

Satisfaction Guaranteed

We back-up our product with 100% money back guarantee. If you are not satisfied with our study guide, just return it within 14 days with proof of purchase receipt and we will refund your money, including our shipping charge. You have nothing to lose!!

In the Cisco CCNA exam, IP addressing and subnetting questions can be difficult and confusing. However, don’t let that dicurrege you from studying this part of the CCNA exam, as it an important piece of knowledge you will need at work. In this article we will illustrate in details how to derive the subnet addres, broadcast address and IP host range for a tipical network design question from the CCNA exam.

Want more examples? For compelet detailed illustration of all CCNA exam topics, visit our CCNA Study Guide home page and check out our complete CCNA Quick Reference Chart.
Question:
For a given IP address 172.16.10.22 and mask 255.255.255.240, answer the following:
  1. What is the subnet IP address?
  2. What is the broadcast IP address?
  3. What is a valid range for a hosts IP addresses?

Answer:
Don’t let the given IP addres confuse you, it is simply one of the hosts IP Addresses of this subnet. Later on, we will find the whole range of host IP addresses for this subnet.

Step1: Line up and convert the given IP address and mask to binary, see section A and B,
Note: The first Octet if the given IP address indicate it is a class B address; we know that in class B mask, the first two octets are set to 1. Therefore we conclude that the bits of the third octet and bit number 7, 6, 5 and 4 of the fourth octet are borrowed from the host portion of this class C address to be used for subnetting, see section A.
Step 2: Turn OFF all the host bits (set them to 0) to get the subnet IP address, see section C.

Step 3: Turn ON all the host bits (set them to 1) to get the broadcast IP address, see section D.

Step 4: The valid host IP address range is the list of IP addresses between the subnet address and the broadcast address. See section E.
Note: The given IP address (172.16.10.22) falls within the host range we found in Step 4.
IP Addressing and Subnetting
Order Online:
Use your credit card or e-check to buy online with PayPalsecure payment. Just click on the Buy Now button and follow the instructions. Other Payment Options.
 

 


Questions? Checkout our FAQs page or E-mail us at: info@texbuddy.com
Copyright© 2006 TexBuddy.com. All rights reserved. Do not duplicate or redistribute in any form.
This Website and the products described in it are not sponsored by, endorsed by, or affiliated with Cisco Systems, Inc®. Cisco™, Cisco Systems™ and CCNA™ logos are trademarks or registered trade marks of Cisco Systems, Inc® or its affiliates. All other trademarks are trademarks of their respective owners. CCNA Certification.