CS4451 Homework 1 for Chapter 1 and Chapter 2

(Total points 100)

1. (30 points) Network administrator should be familiar with basic system utilities. 'route', ‘arp’ and “ping” are those kind of utilities on Linux. Log in as yourself to wopr.csl.mtu.edu and answer the following questions:

a) What is in the route table?

b) What network does wopr belong to?

c) What is the default gateway?

d) What is the MAC address for wopr.csl.mtu.edu’s default gateway?

e) What is 169.254.0.0 in the routing table?

f) What is the MAC address for guardian.csl.mtu.edu? What is the vendor for the NIC?

2. (20 points) The network 134.122.0.0/16 has been subdivided into /19 networks.

a) How many networks are there? List them. What is their netmask?

b) How many hosts could there be on each network?

c) Determine which network the address 134.122.67.124 belongs to.

d) What is the broadcast address for each network?

3. (30 points) Sysadmin Lab network address allocation plan

In this question, you are asked to work out the network address allocation plan for the sysadmin lab that you are using. Here are the requirements:

• The address space for the classroom is 192.168/16
• The router in the closet has two network cards. The external card connects to the internet and its IP address is 141.219.152.136. The internal card connects to the classroom switch and its IP address is 192.168.100.1.
• The 192.168.100.2-192.168.100.50 shall be reserved for installation servers, printers, switches.
• There will be another class CS4481 using the lab. CS4481 needs 10 PCs.
• There will be 10 student groups in CS4451. Each group will need their own subnet. Each group will need to have 10 IP addresses.

1) List the network address (using prefix length notation), host address range, for CS4481 PCs and all 10 student groups clearly.

2) Draw a topology to show how all the components (routers, installation servers, printers, switches, PCs for cs4481, subnets of the student groups for CS4451) will be connected. Denote the topology with IP addresses for each component. For subnet, using the network number.

4. (20 points) protocol and port

a) What protocol (tcp, udp, ip, icmp) does the following use directly?

1. Arp

2. Ping

3. Traceroute

4. Firefox

5. Thunderbird

b) What port number does the following use?

1. ssh

2. telnet

3. http

4. talk

5. DNS