Jayhawk

University of Kansas

Electrical Engineering & Computer Science


EECS 563 - Homework Assignment


Homework 5

1. A host IP address is 129.5.32.54 with a subnet mask of 255.255.255.252.

a) How many hosts can be supported on the same network as this host?

b) What is the network id?

c) What is the host id?

d) Write the subnet mask of 255.255.255.252 in /n format.

e) What is the broadcast address on this network?

2. An company is assigned an address space with a network prefix of 129.10.2.0/24. The company has 4 departments, each with the following number of hosts:

Departments
# Hosts
A
66
B
30
C
21
D
7

Design a subnetting address scheme for this company. That is, specify a subnet address for each department.

3. ARP

a) Why do entries in the ARP table time out?

b) What happens if the the time out interval is too small?

4. Describe how a VPN uses tunneling.

5. How many bit are in an IPv6 address?

6. The IP checksum detect errors in the IP header. True or False

7. What function does DNS provide?

8. How does a host associate a IP address with an MAC address?

 


Author

Victor S. Frost, frost@eecs.ku.edu and some problems from Communication Networks: Fundamentals Concepts and
Key Architectures, A. Leon-Garcia and I. Widjaja (Second edition)