Match each NAT term to its most accurate description.
Drag a concept onto its matching description — or click a concept then click the description.
Private address used by the host on the internal network
Address that represents the internal host to outside networks
Fixed one-to-one translation
Many-to-one translation using ports
⚠ Common exam trap
The exam trap is confusing the perspective (inside vs. outside) and the location (local vs. global). Remember: 'Local' is the address as seen from the inside network, 'Global' is the address as seen from the outside network.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Inside Local: The IP address of an internal host as seen from inside the network.
NAT terms describe address perspectives: Inside Local is the internal host's IP, Inside Global is its external IP, Outside Local is the external host's IP seen internally, Outside Global is its actual external IP, Static NAT provides permanent mapping, and Dynamic NAT uses a pool.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Inside Local: The IP address of an internal host as seen from inside the network.
Why this is correct
Inside Local identifies the private IP address assigned to a host within the internal network, exactly as that host appears from the inside perspective before any NAT translation is applied. This address is typically an RFC 1918 private address, such as 10.0.0.1, which is not routable on the public internet. It is the source address that the NAT router will translate to an Inside Global address when traffic leaves the network.
Inside Local: The IP address of an external host as seen from inside the network.
Why it's wrong here
The description of an external host's IP address as seen from inside the network corresponds to the Outside Local address, not Inside Local. Inside Local is strictly assigned to internal hosts, whereas Outside Local is the term used for a remote host's address that is typically translated or represented from the internal network's viewpoint. Thus, this option incorrectly swaps the host identity, since Inside Local cannot refer to any external device.
When this WOULD be correct
If the question asked for the definition of 'Outside Local' (the IP address of an external host as seen from inside the network), then this option would be correct.
Inside Local: The IP address of an internal host as seen from outside the network.
Why it's wrong here
Seeing an internal host's address from the outside network describes the Inside Global address, because that is the translated public IP address that external devices observe. Inside Local, in contrast, is the original private address that only exists and is visible within the internal network. The question's wording places the observation point outside, which aligns with the Inside Global definition rather than Inside Local.
When this WOULD be correct
If the question asked for the definition of 'Inside Global' (the IP address of an internal host as seen from outside the network), then option C would be correct.
Inside Local: The IP address of an external host as seen from outside the network.
Why it's wrong here
This statement misidentifies the Inside Local address by describing an external host's address as seen from the outside, which actually defines the Outside Global term. Inside Local always refers to an internal host's address from the inside perspective, never to an external device. Additionally, an external host's public IP address observed from outside the network is the Outside Global address, so the description conflates the host location and the NAT perspective.
When this WOULD be correct
If the question asked for the definition of 'Outside Local' (the IP address of an external host as seen from outside the network), then option D would be correct.
Option-by-option analysis
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
Why this is correct
Inside Local identifies the private IP address assigned to a host within the internal network, exactly as that host appears from the inside perspective before any NAT translation is applied. This address is typically an RFC 1918 private address, such as 10.0.0.1, which is not routable on the public internet. It is the source address that the NAT router will translate to an Inside Global address when traffic leaves the network.
Why this is wrong here
Inside Local refers to the IP address of an internal host as seen from inside the network, not an external host. Option B incorrectly describes an external host's IP.
★ When this WOULD be the correct answer
If the question asked for the definition of 'Outside Local' (the IP address of an external host as seen from inside the network), then this option would be correct.
Why candidates choose this
Candidates may confuse 'Inside Local' with 'Outside Local' due to similar phrasing, or mistakenly think 'Inside' refers to the location of the host rather than the perspective of the address.
Why this is wrong here
Inside Local refers to the IP address of an internal host as seen from inside the network, not from outside. Option C describes the Inside Global address.
★ When this WOULD be the correct answer
If the question asked for the definition of 'Inside Global' (the IP address of an internal host as seen from outside the network), then option C would be correct.
Why candidates choose this
Candidates may confuse 'Inside Local' with 'Inside Global' because both involve internal hosts, but they differ in perspective (inside vs. outside the network).
Why this is wrong here
Inside Local refers to the IP address of an internal host as seen from inside the network, not an external host from outside.
★ When this WOULD be the correct answer
If the question asked for the definition of 'Outside Local' (the IP address of an external host as seen from outside the network), then option D would be correct.
Why candidates choose this
Candidates may confuse 'Inside Local' with 'Outside Local' due to similar phrasing, or mistakenly think 'Local' implies the perspective of the local network (outside) rather than the inside host.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Visual reference
Go deeper
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Configuring AAA with TACACS+ and RADIUS on IOS XE
Key term
NAT
NAT (Network Address Translation) is a method that allows multiple devices on a private network to share a single public IP address when accessing the internet.
Key term
Inside local
Inside local is the IP address assigned to a device on an internal private network before any Network Address Translation (NAT) is applied.
About these practice questions
This 200-301 question is part of Courseiva's 1,389-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.