12
Refer to the exhibit. R1 is configured for NAT as displayed. What is wrong with the configuration?
Access-list 1 is misconfigured.
NAT-POOL2 is not bound to ACL 1.*
Interface Fa0/0 should be identified as an outside NAT interface.
The NAT pool is incorrect.
13
A network engineer has configured a router with the command ip nat inside source list 4 pool corp overload. Why did the engineer use the overload option?
The company needs to have more public IP addresses available to be used on the Internet.
The company has a small number of servers that should be accessible by clients from the Internet.
The company has more private IP addresses than available public IP addresses.*
The company router must throttle or buffer traffic because the processing power of the router is not enough to handle the normal load of external-bound Internet traffic.
14
Refer to the exhibit. What will be the effect of entering the command that is shown in the exhibit on R2 as part of the dynamic NAT configuration?
It will bind NAT-POOL1 with ACL 1.*
It will identify an inside NAT interface.
It will define a pool of addresses for translation.
It will define the source ACL for the external interface.
15
Which configuration would be appropriate for a small business that has the public IP address of 209.165.200.225/30 assigned to the external interface on the router that connects to the Internet?
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp overload
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp overload
ip nat inside source static 10.0.0.5 209.165.200.225
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat inside source list 1 interface serial 0/0/0 overload ********
16
Which type of NAT maps a single inside local address to a single inside global address?
dynamic
port address translation
static*
overloading
17
Typically, which network device would be used to perform NAT for a corporate environment?
host device
router*
DHCP server
server
switch
18
Several key servers in an organization must be directly accessible from the Internet. What addressing policy should be implemented for these servers?
Use dynamic NAT to provide addresses for the servers.
Place all of the servers in their own Class C private subnet.
Use DHCP to assign addresses from the pool of Class B addresses.
Assign static internal addresses and public external addresses to each of the servers.*
19
What is a characteristic of unique local addresses?
They are designed to improve the security of IPv6 networks.
Their implementation depends on ISPs providing the service.
They allow sites to be combined without creating any address conflicts.*
They are defined in RFC 3927.
20
Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?
static NAT with a NAT pool
PAT using an external interface*
static NAT with one entry
dynamic NAT with a pool of two public IP addresses
21
Refer to the exhibit. The NAT configuration applied to the router is as follows:
ERtr(config)# access-list 1 permit 10.0.0.0 0.255.255.255
ERtr(config)# ip nat pool corp 209.165.201.6 209.165.201.30 netmask 255.255.255.224
ERtr(config)# ip nat inside source list 1 pool corp overload
ERtr(config)# ip nat inside source static 10.10.10.55 209.165.201.4
ERtr(config)# interface gigabitethernet 0/0
ERtr(config-if)# ip nat inside
ERtr(config-if)# interface serial 0/0/0
ERtr(config-if)# ip nat outside
Based on the configuration and the output shown, what can be determined about the NAT status within the organization?
Static NAT is working, but dynamic NAT is not.
NAT is working.
Not enough information is given to determine if both static and dynamic NAT are working.*
Dynamic NAT is working, but static NAT is not.
22
Place the options in the following order:
– not scored –
step 5
step 2
step 4
step 1
step 3
23
What are two required steps to configure PAT? (Choose two.)
Define the range of ports to be used.
Define a pool of global addresses to be used for overload translation.*
Identify the inside interface.*
Define a standard access list that allow the outside global addresses to be used.
Define a standard access list denying the addresses that should be translated.
24. Using NAT terminology, what is the address of the source host on a private network as seen from inside the network?
inside local*
outside local
outside global
inside global
25. What is an advantage of deploying IPv4 NAT technology for internal hosts in an organization?
provides flexibility in designing the IPv4 addressing scheme*
increases the performance of packet transmission to the Internet
enables the easy deployment of applications that require end-to-end traceability
makes internal network access easy for outside hosts using UDP
26. A network administrator is configuring a static NAT on the border router for a web server located in the DMZ network. The web server is configured to listen on TCP port 8080. The web server is paired with the internal IP address of 192.168.5.25 and the external IP address of 209.165.200.230. For easy access by hosts on the internet, external users do not need to specify the port when visiting the web server. Which command will configure the static NAT?
R1(config)# ip nat inside source static tcp 192.168.5.25 8080 209.165.200.230 80*
R1(config)# ip nat inside source static tcp 192.168.5.25 80 209.165.200.230 8080
R1(config)# ip nat inside source static tcp 209.165.200.230 8080 192.168.5.25 80
R1(config)# ip nat inside source static tcp 209.165.200.230 80 192.168.5.25 8080
27. Fill in the blank. Do not use abbrevations.
NAT overload is also know as __Port Address Translation__