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200-901 Practice Question: Based on the NAT translation table, what type of…
Exhibit
R1# show ip nat translations Pro Inside global Inside local Outside local Outside global icmp 203.0.113.10:1 10.0.0.1:1 192.0.2.5:1 192.0.2.5:1 tcp 203.0.113.10:80 10.0.0.1:80 192.0.2.5:80 192.0.2.5:80
Based on the NAT translation table, what type of NAT is being used?
⚠ Common exam trap
Cisco often tests the distinction between Dynamic NAT (which uses a pool of public IPs) and PAT (which overloads a single public IP with port numbers), and the trap here is that candidates see multiple translations and assume Dynamic NAT, missing the key clue that the public IP is identical across entries.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
PAT (overload)
The NAT translation table shows multiple internal IP addresses (e.g., 10.1.1.1, 10.1.1.2) being translated to the same public IP address (e.g., 203.0.113.1) but with different source ports. This is the defining characteristic of Port Address Translation (PAT), also known as NAT overload, where a single public IP is shared among many internal hosts by multiplexing on layer-4 port numbers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Dynamic NAT
Why it's wrong here
Dynamic NAT assigns a different global address for each session, but here only one global address is used.
- ✗
Static PAT
Why it's wrong here
Static PAT is a one-to-one mapping of a specific port, but the translations show multiple ports for the same global IP.
- ✗
Static NAT
Why it's wrong here
Static NAT maps one inside local to one inside global, but here multiple local addresses use the same global address.
- ✓
PAT (overload)
Why this is correct
PAT uses port numbers to distinguish between multiple internal hosts sharing a single public IP.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-901 exam.