Review Questions
Answer the following questions, and then refer to Appendix G, "Answers to Review Questions," for the answers.
When networks are connected based on their location, is this a functional or geographic network design?
Describe the role of each layer in the hierarchical network model.
Name an advantage and a disadvantage of a fully meshed core layer.
At what layer are DHCP and DNS servers typically found?
What are three benefits of a good IP address design?
What are private IP addresses, and what are they used for?
How does route summarization benefit a network?
Given a host address 10.1.17.61/28, what is the range of addresses on the subnet that this host is on?
How does VLSM allow a more efficient use of IP addresses?
What range of addresses is represented by the summary route 172.16.16.0/21?
You are in charge of the network shown in Figure 1-36. It consists of five LANs with 25 users on each LAN and five serial links. You have been assigned the IP address 192.168.49.0/24 to allocate addressing for all links.
Write down the addresses you would assign to each of the LANs and serial links
Figure 1-37 shows a network with subnets of the 172.16.0.0 network configured. Indicate in the following table where route summarization can occur in this network and what the summarized addresses would be.
Figure 1-38 shows a network with subnets of the 172.16.0.0 network configured. Indicate in the following table where route summarization can occur in this network and what the summarized address would be.
When selecting a route, which prefix match is used?
What is the difference between route summarization and CIDR?
The following networks are in Router A's routing table:
What is the difference between a NAT inside local IP address and an inside global IP address?
Which command indicates that NAT translation is to be done for packets arriving on an interface?
In the following configuration example, what does the first line do? What does the fourth line do?
Describe how a route map works.
What are some differences between IPv4 and IPv6?
What is the difference between the IPv4 header and the IPv6 header?
What features does the larger address space of IPv6 provide?
Write the shortest legal format for the following IPv6 address:
Write out the following IPv6 address completely:
Describe how IPv6 stateless autoconfiguration works.
Name two IPv4 packet header fields that are no longer defined in the IPv6 packet header.
Describe how 6to4 transition works.
What does dual stack mean?
What is the difference between an IPv6 anycast address and an IPv6 multicast address?
What is the IPv6 broadcast address?
What does the 2001::/16 summary route mean?
The IPv6 header is aligned on what bit boundary?
)
Figure
1-36 Network for Address Assignment
|
LAN 1 |
|
|
LAN 2 |
|
|
LAN 3 |
|
|
LAN 4 |
|
|
LAN 5 |
|
|
WAN A |
|
|
WAN B |
|
|
WAN C |
|
|
WAN D |
|
|
WAN E |
|
)
Figure
1-37 Network for Route Summarization
|
Router C Routing Table Entries |
Summarized Routes That Can Be Advertised to Router D from Router C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
)
Figure
1-38 Network for Route Summarization
|
Router H Routing Table Entries |
Summarized Routes That Can Be Advertised to Router D from Router H |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Using CIDR, what route could Router A advertise to its neighbor?