The primary purpose of NX-API on Cisco Nexus switches for data center automation is to provide a RESTful API that allows programmatic access to CLI commands and structured data output. This is correct because NX-API exposes the switch’s native CLI over HTTP/HTTPS, returning results in machine-readable formats like JSON or XML, which eliminates the need for interactive terminal sessions. In the context of the Cisco DCCOR / CCNP Data Center Core 350-601 exam, this topic tests your understanding of how NX-API enables infrastructure-as-code workflows by integrating with automation tools such as Ansible or Python scripts. A common trap is confusing NX-API with traditional SSH-based scripting; remember that NX-API is RESTful and returns structured data, not raw CLI text. For a quick memory tip, think “NX-API = REST for CLI” — it turns every show or config command into a programmable endpoint.
350-601 Automation Practice Question
This 350-601 practice question tests your understanding of automation. 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. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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.
What is the primary purpose of NX-API on Cisco Nexus switches in a data center automation context?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
To provide a RESTful API that allows programmatic access to CLI commands and structured data output.
NX-API provides a RESTful API interface on Cisco Nexus switches, enabling programmatic access to CLI commands and returning structured data in formats like JSON or XML. This is essential for data center automation because it allows external tools (e.g., Ansible, Python scripts) to configure and retrieve state from the switch without requiring interactive CLI sessions, directly supporting infrastructure-as-code workflows.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
To replace SNMP for monitoring and alerting.
Why it's wrong here
While NX-API can be used for monitoring, its primary purpose is not to replace SNMP but to offer alternative programmatic access.
✗
To enable direct configuration from a web browser without CLI.
Why it's wrong here
Direct browser configuration is not the purpose; programmatic access is.
✗
To create a web-based GUI for manual switch configuration.
Why it's wrong here
NX-API does not provide a GUI; it is an API for automation scripts.
✓
To provide a RESTful API that allows programmatic access to CLI commands and structured data output.
Why this is correct
NX-API translates CLI commands into JSON/REST calls, returning structured data for automation.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between a programmatic API (NX-API) and a web-based GUI, leading candidates to confuse NX-API with the Device Manager web interface, which is a separate feature for manual browser-based management.
Detailed technical explanation
How to think about this question
NX-API listens on TCP port 443 (HTTPS) by default and translates RESTful requests into Nexus CLI commands, executing them in a sandboxed environment. It supports both 'show' commands (returning structured JSON/XML) and 'config' commands (applying configuration changes), making it a bridge between traditional CLI and modern automation frameworks like Ansible or Python's requests library. A subtle behavior is that NX-API sessions are stateless, so each request must include authentication credentials, and it does not maintain a persistent CLI context like an SSH session.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-601 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Automation — This question tests Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: To provide a RESTful API that allows programmatic access to CLI commands and structured data output. — NX-API provides a RESTful API interface on Cisco Nexus switches, enabling programmatic access to CLI commands and returning structured data in formats like JSON or XML. This is essential for data center automation because it allows external tools (e.g., Ansible, Python scripts) to configure and retrieve state from the switch without requiring interactive CLI sessions, directly supporting infrastructure-as-code workflows.
What should I do if I get this 350-601 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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