mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show ip nat translations
Pro Inside global Inside local Outside local Outside global --- 192.0.2.10 10.0.0.10 --- --- --- 192.0.2.11 10.0.0.11 --- ---
R1# show ip nat statistics
Total active translations: 2 (0 static, 2 dynamic; 0 extended) Outside interfaces: GigabitEthernet0/1 Inside interfaces: GigabitEthernet0/0 Hits: 0 Misses: 10 CEF Translated packets: 0, CEF Punted packets: 0 Expired translations: 0 Dynamic mappings: -- Inside Source
[Id] ip nat pool POOL1 192.0.2.10 192.0.2.20 netmask 255.255.255.240
refcount 2 map-id 1
[Id] ip nat inside source list ACL1 pool POOL1
refcount 2
Based on this output, what is the problem?
⚠ Common exam trap
Cisco often tests the distinction between 'Hits' and 'Misses' in NAT statistics — the trap here is that candidates see existing translations and assume NAT is working, but the zero hits indicate no actual traffic has been translated, pointing to an ACL or routing problem rather than pool exhaustion or interface reversal.
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
✓
NAT translations exist but no packets are being translated (0 hits), indicating a possible routing or ACL issue.
The output shows two dynamic NAT translations (192.0.2.10→10.0.0.10 and 192.0.2.11→10.0.0.11) but zero hits, meaning no packets have been translated. The misses counter is 10, indicating that packets arrived but failed to match the translation. This typically occurs when the access control list (ACL1) does not permit the source traffic, or the routing path does not direct traffic through the NAT inside interface, preventing the translation from being used.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
NAT translations exist but no packets are being translated (0 hits), indicating a possible routing or ACL issue.
Why this is correct
The 0 hits with 10 misses suggest that translations are created but no successful data flow; packets are missing or not returning.
- ✗
The NAT pool is exhausted.
Why it's wrong here
Only 2 translations exist out of 16 addresses.
- ✗
PAT is enabled but not working.
Why it's wrong here
The mapping does not include 'overload', so PAT is not configured.
- ✗
The inside and outside interfaces are reversed.
Why it's wrong here
The statistics show correct interface assignment.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 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 300-410 exam.