CIS 331: Network Introduction
Lehman College, City University of New York
Spring 2015
This Homework Is Due By 11:59 PM on Sunday February 8, 2015
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:
C779B47F
5EBDC9F1
83721E2F
3CBDEF37
DB1E2CB5
B7427C3E
A9C567EB
DA975EB4
5968C21D
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 Typed Microsoft Word file or a PDF file.
No other forms of submission will be accepted.