This 200-301 practice question tests your understanding of 200-301 exam topics. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Drag and drop the following steps into the correct order to configure PAT (Port Address Translation) on a Cisco IOS-XE router and describe the translation process for an outbound packet.
Correct answer & explanation
The correct order begins with defining an ACL to match the private source traffic, then applying the NAT overload command using that ACL and the outside interface. Next, the inside and outside interfaces must be marked with 'ip nat inside' and 'ip nat outside'. When an outbound packet arrives, the router checks the NAT table; if no entry exists, it creates one using a global IP and a unique port, translates the packet, and forwards it. This sequence ensures that traffic is identified, translated, and forwarded correctly.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 200-301 NAT questions on configuration and troubleshooting.
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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Practise trunk verification and VLAN forwarding across switches.
Practise WLAN security, authentication and wireless architecture concepts.
Practise IPv6 addressing, routes, neighbour discovery and common IPv6 exam traps.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Static NAT maps one inside address to one outside address.
Common exam trap: NAT rules depend on direction and matching traffic: NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 200-301 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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