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Module 1_S4

   Trong: CCNA
 
Apr 20 2008, 11:07 AM     Bởi: Guest_lehuy0305_*
1.


Given the accompanying graphic, which statement would be applied to the S0 interface when configuring NAT on the Tampa router?
ip nat inside
ip nat outside
ip pat inside
ip pat outside
2.


Given the accompanying graphic, which addresses could be assigned to traffic leaving S0 as a result of the statement ip nat pool Tampa 179.9.8.96 179.9.8.111 netmask 255.255.255.240? (Choose two.)
10.0.0.125
179.9.8.95
179.9.8.98
179.9.8.101
179.9.8.112
3.


Refer to the exhibit. Which command would establish a group of 30 IP addresses that could be used to hide inside addresses from the Internet?
ip nat pool Raleigh 10.0.0.32 10.0.0.63 netmask 255.255.255.224
ip nat pool Raleigh 10.0.0.32 10.0.0.63 netmask 255.255.255.240
ip nat pool Raleigh 171.11.10.32 171.11.10.63 netmask 255.255.255.224
ip nat pool Raleigh 171.11.10.32 171.11.10.63 netmask 255.255.255.240
4.


What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco 806 broadband router?
defines which addresses are allowed out of the router
defines which addresses are allowed into the router
defines which addresses can be translated
defines which addresses are assigned to a NAT pool
5.


Given the accompanying debug output from a Cisco router, what kind of address is 10.10.10.3 with the IP identification number of 29855?
inside local
inside global
outside local
outside global
6.


The Raleigh router shown in the diagram is configured with PAT. Which of the following must be changed if the private network is migrated to a 10.0.0.0 network? (Choose two.)
E0 interface address
S0 interface address
the access-list statement
the NAT outside interface
the NAT inside interface
7.


Given the accompanying diagram, which commands are necessary to implement PAT on the Raleigh router? (Choose four.)
access-list 10 permit 192.168.10.0 0.0.0.255
access-list 10 permit 171.11.0.0 0.0.255.255
ip nat inside source static 192.168.10.1 171.11.0.0
ip nat inside source list 10 interface S0 overload
ip nat outside
ip nat inside
8.
Which of the following traffic types are supported by Cisco IOS NAT? (Choose two.)
Routing table updates
ICMP
FTP
BOOTP
SNMP
9.
A company was issued 207.48.12.8/29 as its registered address from its ISP. Which of the following is a solution that will allow Internet access to 300 employees simultaneously?
VLSM to further subnet the registered address and create more IP addresses
normal subnetting on the Class C network and address the host
RFC 1918 and port address translation
this is an impossible scenario because there are not enough addresses
10.
What is true regarding the differences between NAT and PAT?
PAT uses the word "overload" at the end of the access-list statement to share a single registered address.
Static NAT allows an unregistered address to map to multiple registered addresses.
Dynamic NAT allows hosts to receive the same global address each time external access is required.
PAT uses unique source port numbers to distinguish between translations.
11.
What is the purpose of the DHCPDECLINE message?
If the DHCP client received multiple DHCPOFFERs, it uses the DHCPDECLINE to refuse the offers it does not use.
If the DHCP server sends an IP configuration update that the DHCP client does not need, it uses the DHCPDECLINE to refuse the information.
The DHCP server uses the DHCPDECLINE message to refuse a DHCP client's request for IP configuration information.
If the DHCP client detects that the address supplied by the DHCP server is in use on the network, it uses the DHCPDECLINE to refuse the offer.
12.
A network administrator needs to configure a router to offer DHCP services. Assuming the router is operating with factory defaults and the IOS supports DHCP, what must be done to start the DHCP service?
Use the global configuration command service dhcp.
Use the privileged command service dhcp start.
Use the start service dhcp command during the setup processes.
Do nothing. The DHCP service is enabled by default during start up.
13.
Users are complaining that they cannot attach to network resources. A technician has confirmed that clients are not properly receiving IP configuration information through the DHCP process. The network administrator wants to watch the DHCP process while the technician tries to release and renew addresses on the clients. Which command would the network administrator use to monitor the process of address allocation?
show ip dhcp server statistics
show ip dhcp binding
debug ip dhcp server events
debug ip dhcp binding
14.


Refer to the graphic. Which command would allow the router to forward DHCP broadcasts from Host A to the DHCP server?
ip helper-address
dhcp helper-address
dhcp relay-agent
dhcp-relay
15.
What is the default lease time for addresses assigned to clients through Easy IP?
twenty-four hours
forty-eight hours
one week
two weeks
16.
In addition to assigning addresses from predefined pools, which other services can a DHCP server offer? (Choose three.)
DNS server addresses
domain names
global IP assignments
NAT translations
WINS server addresses
17.
Which configuration parameters are provided by the dynamic allocation process of DHCP? (Choose three.)
Gateway address
DNS server
DHCP Server
Subnet mask
Key server
ARP server
18.
Which of the following are broadcasts sent by a client to a DHCP server? (Choose two.)
DHCPDISCOVER
DHCPRELEASE
DHCPACK
DHCPREQUEST
DHCPOFFER
19.
Which configuration information might a DHCPOFFER include? (Choose three.)
IP address
DNS server address
DHCP binding
Lease time
DHCP database
20.
What is the default number of pings issued by a DHCP server to a pool address before sending the DHCPOFFER to a client?
one
two
three
four
five

 

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