CIS 331: Network Introduction
Lehman College, City University of New York
Fall 2014
This Homework Is Due By 11:59 PM on Sunday September 14, 2014
Given the following IP addresses (In Hexadecimal), identify (a) the Class, (b) the Network
ID, (c) the Host ID of the following IP Addresses, and (d) write each address in dotted
decimal notation:
D548C7AB
6F7C4B27
954278CE
4F2E2D9D
C7894FFA
A18EF3D1
B8C657BE
D9A57E4B
2F9862CD
Exactly how many class A, B, and C networks can exist? Exactly how many hosts can a
network in each class have? How many possible addresses are possible in each class?
Be careful to allow for broadcast as well as class D and E addresses.
How many IP addresses would be needed to assign a unique IP address to every house in
the USA? The world? Is the IP address space sufficient? (Search the internet for reasonable
numbers of households in the USA and the world).
Describe the message routing activity that we did in class with the index cards.
Please submit the completed assignment on Blackboard as a Microsoft Word file or a PDF file.
No other forms of submission will be accepted.