NAT PAT Questions CCNA 200-120

QUESTION 65
Which two statements about static NAT translations are true? (choose two)
A. They are always present in the NAT table.
B. They allow connection to be initiated from the outside.
C. They can be configured with access lists, to allow two or more connections to be initiated from the outside.
D. They require no inside or outside interface markings because addresses are statically defined.

Correct Answer: AB

Explanation
With static NAT, translations exist in the NAT translation table as soon as you configure static NAT command
(s), and they remain in the translation table until you delete the static NAT command(s).
With dynamic NAT, translations do not exist in the NAT table until the router receives traffic that requires
translation. Dynamic translations have a timeout period after which they are purged from the translation table.
-> A is correct.

Because static NAT translations are always present in the NAT table so outside hosts can initiate the
connection without being dropped -> B is correct.
Static translations can not be configured with access lists. To configure static NAT, we only need to specify
source IP, NAT IP, inside interface & outside interface.
-> C is not correct.

We have to specify which is the inside and outside interface -> D is not correct.
For your information, below is an example of configuring static NAT:

R0(config)#int f0/0
R0(config-if)#ip nat inside
R0(config-if)#int f0/1
R0(config-if)#ip nat outside
R0(config)#ip nat inside source static 10.0.0.1 200.0.0.2

QUESTION 66
What are two benefits of using NAT? (choose two)
A. NAT protects network security because private networks are not advertised.
B. NAT accelerates the routing process because no modifications are made on the packets.
C. Dynamic NAT facilitates connections from the outside of the network.
D. NAT facilitates end-to-end communication when IPsec is enable.
E. NAT eliminates the need to re-address all host that require external access.
F. NAT conserves addresses through host MAC-level multiplexing.

Correct Answer: AE

QUESTION 67
Refer to the exhibit. What statement is true of the configuration for this network?

NAT-PAT Questions

A. The configuration that is shown provides inadequate outside address space for translation of the number of
inside addresses that are supported.
B. Because of the addressing on interface FastEthernet0/1, the Serial0/0 interface address will not support the
NAT configuration as shown.
C. The number 1 referred to in the ip nat inside source command references access-list number 1.
D. ExternalRouter must be configured with static routers to network 172.16.2.0/24

Correct Answer: C

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