Homework #4 - CSIS 625 - Fall 2003 - Section 1
Due Week 13 (December 1, 2003) by classtime

Email this document with your answers filled in to droelke@stthomas.edu
The email should contain your answers as plain text in the body of the document.
It should not be sent as an attachment to your email.
If you quote something for an answer - be sure to give the page number, 
which week of class notes, or the full URL, for each citation.

Name:

Define the following:
1) ADM:
2) ICMP:
3) UDP:
4) TCP:
5) ARP:
6) DNS:
 
Short Answer:

7) Describe the messages for a connection establishment (3 way handshake).

8) Describe the differences between a Gateway, a Router, a Repeater, and an Amplifier.

9) What is the purpose of the TTL field in the IP datagram header?

10) Write the following subnet masks in binary notation.  
a) 255.255.192.0
b) 255.255.224.0
c) 255.240.0.0

11) Find the subnetwork address and host address for the following:
a) IP address 125.34.12.56  Mask: 255.255.0.0
b) IP address 141.181.14.15 Mask: 255.255.128.0
c) IP Address 200.34.22.156 Mask: 255.255.255.240
d) IP Address 141.181.14.16 /19

12) Describe the strengths and weaknesses of public key encryption and symmetric encryption.