Cisco 200-105 Exam

Refer to the graphic. A company wants to use NAT in the network shown. Which commands will apply the NAT configuration to the proper interfaces? (Choose two.)

  • A. R1(config)# interface serial0/1
    R1(config-if)# ip nat inside
  • B. R1(config)# interface serial0/1
    R1(config-if)# ip nat outside
  • C. R1(config)# interface fastethernet0/0
    R1(config-if)# ip nat inside
  • D. R1(config)# interface fastethernet0/0
    R1(config-if)# ip nat outside
  • E. R1(config)# interface serial0/1
    R1(config-if)# ip nat outside source pool 200.2.2.18 255.255.255.252
  • F. R1(config)# interface fastethernet0/0
    R1(config-if)# ip nat inside source 10.10.0.0 255.255.255.0
Answer: Option B. C.
Explanation: 

For NAT, you need to define which interfaces are inside and which are outside. The outside interface is the one that connects to the external network, and the one that will be used for translating addresses. The inside interface is for the internal network, and defines the network IP addresses that will get translated to the one specified in the outside network.

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