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CCNA PAT (Port Address Translation) Practice Question

Drag and drop the following steps into the correct order to configure PAT (overload) on a Cisco router using a single public IP address on the outside interface.

Drag or tap steps into the slots.

Steps
Order
1Step 1
2Step 2
3Step 3
4Step 4

⚠ Common exam trap

Learners often forget to assign the 'ip nat inside' and 'ip nat outside' interface commands, or they configure them in the wrong order relative to the source NAT statement.

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

✓

Enter global configuration mode

The correct order is A, B, C, D, E. First, enter global configuration mode. Second, create an access list to match the traffic to be translated. Third, configure the inside interface with 'ip nat inside'. Fourth, configure the outside interface with 'ip nat outside'. Fifth, apply PAT with 'ip nat inside source list <ACL> interface <outside-if> overload'. This final command enables PAT using the outside interface's public IP.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✓

    Enter global configuration mode

    Why this is correct

    Entering global configuration mode is always the first step in any router configuration.

  • ✓

    Create an access list to match the traffic to be translated

    Why this is correct

    Creating an access list to identify the traffic that will be translated is necessary before applying NAT rules.

  • ✓

    Configure the inside interface with 'ip nat inside'

    Why this is correct

    Configuring the inside interface with `ip nat inside` marks it as the internal side for NAT translation.

  • ✓

    Configure the outside interface with 'ip nat outside'

    Why this is correct

    Configuring the outside interface with `ip nat outside` marks it as the external side for NAT translation.

Visual reference

Inside (Private) PC-A 10.0.0.1 PC-B 10.0.0.2 NAT Router Outside (Public) 203.0.113.1 Inside Global Server PAT: many private IPs share one public IP via unique port numbers

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This 200-301 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 200-301 exam.