Lab Questions Power up your CentoS and Solaris Linux machines and login as root. You will not be able to perform all of the lab commands from a regular user account. 1. Ethernet is the link layer protocol most widely used for LANs (local area networks). Can Ethernet be used as a link layer for network protocols other than TCP/IP? How does this protocol (ethernet) handle routing? 2. What is the difference between static and dynamic 3. Why is the use of ICMP (Internet Control Message 4. What is a command you might use to determine if IP routes for TCP/IP? Protocol) redirects for routing not a good idea? packets can be routed successfully from one machine to another? 5. What is the IP address of CSUB's router/gateway? (traceroute) 6. What is the kernel routing table on your Linux machines? (netstat -rn or route -n) 7. Explain the difference between a switch and a hub 8. How many hubs at most can separate host A and host B on a Ethernet LAN? 9. How does a switch improve traffic in an Ethernet? What about broadcast traffic? 10. What is a VLAN? 11. Explain the term UTP-based technologies 12. Give the layer in the OSI model that a hub, a switch, and a router operate at (each may operate at a different layer). 13. Every machine in the lab is behind a firewall. Below is the routing table for the firewall. The firewall (hecate.cs.csuak.edu) also serves as a router for all machines behind it to get to the outside world Destination Gateway Genmask Flags Metric Ref Iface 172.17.200.0 136.168.0.0 default 255.255.254.0U 00 eth0 255.255.0.0 U 00 eth1 UG 0 0 eth1 136.168.1.1000.0.0.0 a. How many network interface cards are on this b. From behind the firewall, where will a packet c. Where will a packet addressed to 172.17.201.200 machine? addressed to 136.168.201.10 go? (give interface) go? (give interface)