CCNA Guide to Cisco Networking, Fourth Edition Chapter 3 Lab Solutions
Chapter 3 Lab Solutions
Activity Questions Lab 3.1
1. Destination IP: 193.19.20.36 Source IP: 193.19.20.45
3. Destination IP: 193.19.20.45 Source IP: 193.19.20.36
4. Destination MAC: 05:61:8c:01:05:12 Source MAC: 09:01:02:98:91:80
Review Questions Lab 3.1
1. Explain your destination MAC address entry in Figure 3-2.
2. What will all hosts that see an ARP request do with the information?
3. How does a sending computer know a destination computer’s IP address?
4. What type of frame is the ARP reply—unicast or broadcast?
5. Because ARP uses bandwidth by broadcasting, exactly how does ARP save
bandwidth overall?
Activity Questions Lab 3.2
2. Destination MAC: FF:FF:FF:FF:FF:FF Source MAC: 01:09:42:71:93:64
Review Questions Lab 3.2
1. What kind of address is the destination MAC address in a RARP request?
2. How does a computer know its own MAC address?
3. Based on your lab activity, explain your entry for the source IP address in the RARP
request.
4. What kind of address is the destination IP address in an RARP request?
5. How does the RARP server know which IP address to assign to an RARP client?
Activity Questions Lab 3.3
2. Destination MAC: 66:77:88:99:00:11 Source MAC: 00:11:22:33:44:55
4. Destination MAC: 88:99:00:11:22:33 Source MAC: 22:33:44:55:66:77
Review Questions Lab 3.3
1. In Figure 3-7, what is the default gateway for computer A?
2. In Figure 3-7, what is the default gateway for Computer B?
3. What can you say about the source and destination IP addresses in a frame as the
data travels across routers in its journey from original sender to ultimate receiver?
4. What can you say about the source and destination MAC addresses in a frame as
the data travels across routers in its journey from original sender to ultimate
receiver?
5. Where do routers get the information necessary to make forwarding decisions?
6. Why do computers usually need a default gateway, and when is it used?