CCNA EXPLORATION
ACCESSING THE WAN
Study Guide
Chapter 7: IP Addressing Services
7.1.1
7.1.2
7.1.3
7.1.4
What is DHCP?
Typically a network server is used to offer DHCP
services. What can be used in a SOHO location?
What are the three different address allocation
mechanisms DHCP uses when assigning IP
addresses?
Describe basic dynamic DHCP operation.
Describe the four steps in obtaining a lease
When the client boots or otherwise wants to
join a network.
Describe BOOTP.
How are BOOTP & DHCP alike?
What are the three primary differences
between DHCP and BOOTP?
How are the message formats different
between BOOTP & DHCP?
Describe the DHCP message format.
How is the DHCPDISCOVER sent?
At this point what is the source address of the
client?
What other services can DHCP provide?
What are the steps to configure a router as a
DHCP server? Include router commands’ syntax.
What command disables DHCP?
What command displays a list of all IP address
to MAC address bindings that have been
provided by the DHCP service?
What command displays count information
CCNA EXP 4
CH.7 IP Addressing Services
APRIL 2009
7.1.5
7.1.6
7.1.7
7.1.8
7.2.1
7.2.2
regarding the number of DHCP messages that
have been sent and received?
What command is used to view multiple pools?
What command is used to configure an
Ethernet interface as a DHCP client?
To renew its IP address what command(s)
would be issued on a pc?
What is the Cisco IOS helper address?
How does the helper address apply in DHCP?
What command is needed to configure a router
as a DHCP relay agent?
By default what other UDP services does the
command in the answer above relay?
To specify additional ports, what other
command is used?
What are the steps in configuring a DHCP server
using SDM?
What command displays all address conflicts
recorded by the DHCP server?
What command does the server use to detect
conflicts?
What does the client use to detect clients?
What command is used to confirm that the
router interface acting as the default gateway
for the client is operational?
If there is a switch between the client and the
DHCP server, what configuration changes
resolve the most common DHCP client issues
that occur with an initial installation of a
Catalyst switch.
How do you verify that the client is configured
to relay DHCP requests?
How do you verify that the router Is receiving
DHCP Requests?
All public Internet addresses must be registered
with what?
What is a private address?
What are the private internet addresses as
defined in RFC1918? Include their CIDR prefix.
Without a translation system, private hosts
behind a router in the network of one
organization cannot connect with private hosts
behind a router in other organizations over the
Internet. How is this overcome?
Describe the NATs basic operation.
Where does NAT typically operate?
What is the inside network? Outside network?
Describe the four types of NAT addresses.
Describe Dynamic NAT.
Describe Static NAT.
Describe NAT overloading.
CCNA EXP 4
CH.7 IP Addressing Services
APRIL 2009
7.2.3
7.2.4
What is another name for NAT overloading?
How does PAT track the mappings?
Describe this use of port numbers.
What happens if a source port is already used?
Compare & contrast NAT & PAT.
What are the advantages of NAT?
What are the disadvantages of NAT?
What are the steps to configuring Static NAT?
7.2.5
What are the steps to configuring Dynamic
NAT?
7.2.6
What are the steps to configuring NAT Overload
for a Single Public IP Address?
CCNA EXP 4
CH.7 IP Addressing Services
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What are the steps to configuring NAT Overload
for a Pool of Public IP Addresses?
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CH.7 IP Addressing Services
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7.2.7
7.2.8
7.3.1
7.3.2
What is port forwarding?
Describe the operation of port forwarding.
What must you do Before using the show
commands to verify NAT?
What command displays the details of the NAT
assignments? How can you see additional
information about each translation?
What command displays information about the
total number of active translations, NAT
configuration parameters, how many addresses
are in the pool, and how many have been
allocated?
By default, when do translation entries timeout?
How can you change the time-out?
What command clears all translations from the
NAT table?
What are the steps to verify that NAT is
operating as expected?
What command is used to verify the operation
of the NAT feature by displaying information
about every packet that is translated by the
router?
What command generates a description of each
packet considered for translation and outputs
information about certain errors or exception
conditions, such as the failure to allocate a
global address?
Describe the IPv6 address.
What are some of the enhancements that IPv6
offers?
What is meant by multihomed hosts?
Describe the IPv6 Address Representation.
The text gives the example of
2031:0000:130F:0000:0000:09C0:876A:130B.
Describe how this address can be shortened.
What is a global unicast address?
Describe private IPv6 addresses.
Describe the two types of private IPv6
addresses.
What is the IPv6 loopback address?
Describe the IPv6 Unspecified Address.
Describe how additional hierarchy is added to
the 48-bit global routing prefix with the registry
prefix, ISP Prefix, and site prefix.
CCNA EXP 4
CH.7 IP Addressing Services
APRIL 2009
7.3.3
7.3.4
7.3.5
7.3.6
7.3.7
7.3.8
7.3.9
Describe the interface id.
Describe the four ways you can assign an IPv6
address ID statically or dynamically. Give
commands as needed.
Describe the EUI-64 interface.
Describe Dual Stacking.
Describe Tunneling.
Describe NAT-Protocol Translation (NAT-PT).
Describe the basic operation of dual stacking.
Describe API.
What command(s) enable the use of IPv6 on a
router?
Describe IPv6 Tunneling.
What two issues arise from tunneling?
What considerations are a must for a manually
configured tunnel?
If IPv4 uses CIDR, what does IPv6 use?
What are the IPv6 routing control plane
considerations?
What are the IPv6 routing forwarding/data
plane considerations?
How does the RIPNg Routing Protocol differ
using IPv6?
What is RIPng?
What are some of the features of RIPng?
In dual stack deployments which protocol is
used?
What are the two steps to activate IPv6 on a
router? List the appropriate commands.
What are two ways to perform name resolution
from the Cisco IOS software process?
How do you configure RIPng with IPv6?
What is used instead of the network command
in RIPng?
What are some of the commands used to
troubleshoot RIPng problems?
CCNA EXP 4
CH.7 IP Addressing Services
APRIL 2009