This 200-301 practice question tests your understanding of network services and security. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. A key principle to apply: network Address Translation (NAT) translates private inside local IP addresses to public inside global IP addresses for internet communication.. 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.
Exhibit: After PAT is configured, inside users can browse the internet, but the engineer wants to verify that translations are actually being created. Which command is the best choice?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
show access-lists
Why wrong: That may show ACL hits but not the active NAT translation table itself.
show ip nat translations
This directly displays the current NAT entries.
show ip route
Why wrong: The routing table does not show per-flow NAT translations.
debug ip packet detail
Why wrong: That is far more intrusive than needed for a basic verification.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
show ip nat translations
The NAT translation table shows the inside local and inside global addresses and confirms whether active translations are being built.
Key principle: Network Address Translation (NAT) translates private inside local IP addresses to public inside global IP addresses for internet communication.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
show access-lists
When this WOULD be correct
In a question asking for verification of traffic filtering or access control effectiveness, 'show access-lists' would be the correct choice to confirm which traffic is allowed or denied based on the configured access lists.
show ip nat translations
Why this is correct
This directly displays the current NAT entries.
Clue confirmation
The clue words "best", "which command" in the question point toward this answer.
Related concept
Network Address Translation (NAT) translates private inside local IP addresses to public inside global IP addresses for internet communication.
show ip route
Why it's wrong here
The routing table does not show per-flow NAT translations.
When this WOULD be correct
In a question focused on troubleshooting routing issues, where the engineer needs to verify the routing paths to ensure proper packet forwarding, 'show ip route' would be the correct command to identify the routes and their statuses.
debug ip packet detail
Why it's wrong here
That is far more intrusive than needed for a basic verification.
When this WOULD be correct
If the exam question asked for a method to troubleshoot or analyze packet flow in detail, particularly in a scenario where NAT issues are suspected, 'debug ip packet detail' would be the correct answer. This could involve monitoring packets to identify misconfigurations or unexpected behavior in NAT.
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
This directly displays the current NAT entries.
Why this is wrong here
The command 'show access-lists' displays the configured access control lists but does not provide information about NAT translations, which is the focus of the question.
★ When this WOULD be the correct answer
In a question asking for verification of traffic filtering or access control effectiveness, 'show access-lists' would be the correct choice to confirm which traffic is allowed or denied based on the configured access lists.
Why candidates choose this
Candidates may choose this option because they associate access lists with traffic management and might mistakenly believe that reviewing them could provide insights into NAT operations.
Why this is wrong here
The command 'show ip route' displays the routing table, which does not provide information about NAT translations. In this context, the engineer needs to verify NAT translations specifically, making this option irrelevant.
★ When this WOULD be the correct answer
In a question focused on troubleshooting routing issues, where the engineer needs to verify the routing paths to ensure proper packet forwarding, 'show ip route' would be the correct command to identify the routes and their statuses.
Why candidates choose this
Candidates might choose this option because they associate routing with NAT functionality and may mistakenly believe that understanding the routing table is necessary to verify NAT operations.
Why this is wrong here
The command 'debug ip packet detail' is primarily used for real-time packet analysis and troubleshooting, not for verifying NAT translations. It does not provide a summary of NAT translations like 'show ip nat translations' does.
★ When this WOULD be the correct answer
If the exam question asked for a method to troubleshoot or analyze packet flow in detail, particularly in a scenario where NAT issues are suspected, 'debug ip packet detail' would be the correct answer. This could involve monitoring packets to identify misconfigurations or unexpected behavior in NAT.
Why candidates choose this
Candidates may choose this option because they associate debugging commands with troubleshooting and verification tasks. The idea of monitoring packet details can seem relevant when trying to confirm NAT functionality, despite it not being the most efficient method.
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?”
Common exam traps
A common exam trap is choosing 'show access-lists' or 'show ip route' to verify NAT translations. While ACLs and routing tables are important for network security and path selection, they do not display active NAT translation entries. Another tempting but incorrect choice is 'debug ip packet detail', which provides excessive information and can overwhelm the candidate, making it unsuitable for simple verification. The correct command, 'show ip nat translations', directly reveals the current NAT table, confirming whether PAT translations are being created and maintained.
Trap categories for this question
Command / output trap
That may show ACL hits but not the active NAT translation table itself.
Detailed technical explanation
Network Address Translation (NAT) is a fundamental technology in Cisco networking that allows private IP addresses used inside a network to be translated into public IP addresses for communication over the internet. Port Address Translation (PAT), a type of NAT, enables multiple devices on a local network to share a single public IP address by differentiating sessions using unique source port numbers. This translation process creates entries in a NAT translation table that maps inside local addresses and ports to inside global addresses and ports, enabling return traffic to be correctly routed back to the originating device. The command 'show ip nat translations' is the primary method to verify active NAT or PAT translations on Cisco routers. This command displays the current translation table entries, showing inside local addresses (private IPs), inside global addresses (public IPs), and the associated port numbers. By examining this output, network engineers can confirm that PAT is functioning correctly and that inside users have active translations allowing them to browse the internet. Other commands like 'show access-lists' or 'show ip route' do not provide this translation information, and debug commands, while detailed, are too intrusive for routine verification. A common confusion arises when candidates mistake ACLs or routing tables as sources for NAT translation verification. ACLs control which traffic is permitted or denied but do not show translation states. Routing tables determine packet forwarding paths but do not track NAT sessions. Debug commands can overwhelm with packet-level details and are not recommended for simple checks. Understanding the role of 'show ip nat translations' helps avoid these traps and supports efficient troubleshooting and validation of PAT configurations in Cisco environments.
Key takeaway
Network Address Translation (NAT) translates private inside local IP addresses to public inside global IP addresses for internet communication.
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 network Address Translation (NAT) translates private inside local IP addresses to public inside global IP addresses for internet communication., then practise related 200-301 questions on the same topic to reinforce the concept.
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FAQ
Network Services and Security — This question tests Network Services and Security — Network Address Translation (NAT) translates private inside local IP addresses to public inside global IP addresses for internet communication..
The correct answer is: show ip nat translations — The NAT translation table shows the inside local and inside global addresses and confirms whether active translations are being built.
Review network Address Translation (NAT) translates private inside local IP addresses to public inside global IP addresses for internet communication., then practise related 200-301 questions on the same topic to reinforce the concept.
Yes — watch for: "best", "which command". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Network Address Translation (NAT) translates private inside local IP addresses to public inside global IP addresses for internet communication.
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Last reviewed: May 17, 2026
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