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NVIDIA NCP-AII Exam - Topic 5 Question 6 Discussion

After configuring NGC CLI with ngc config set, a user receives ''Authentication failed'' errors when pulling containers. What step was most likely omitted?
B) Entering the API key during ngc config set or storing it in ~/.ngc/config.
A) Installing the CLI with apt-get instead of manual extraction.
C) Setting --format_type=json to enable API interactions.
D) Running sudo systemctl restart docker after configuration.

NVIDIA NCP-AII Exam - Topic 5 Question 6 Discussion

Actual exam question for NVIDIA's NCP-AII exam
Question #: 6
Topic #: 5
[All NCP-AII Questions]

After configuring NGC CLI with ngc config set, a user receives ''Authentication failed'' errors when pulling containers. What step was most likely omitted?

Show Suggested Answer Hide Answer
Suggested Answer: B

The NVIDIA GPU Cloud (NGC) Command Line Interface is a critical tool for managing AI assets, but it requires a valid authentication handshake to access private or restricted registries. When a user runs ngc config set, the utility initiates an interactive setup where the primary requirement is a unique API Key generated from the NGC portal. If the user omits this key or provides an expired one, the local configuration file (~/.ngc/config) will be incomplete or invalid, leading to immediate 'Authentication failed' errors during docker pull or ngc registry image commands. This key acts as the credential that identifies the user's organization and team permissions. Unlike Docker configuration, which might require a service restart (Option D) to recognize a new runtime, NGC CLI authentication is purely application-level; it relies on the presence of a properly formatted configuration file containing the API token. Therefore, re-executing the configuration and ensuring the API key is correctly pasted into the terminal is the standard troubleshooting fix for this error.


by Stefany at Mar 02, 2026, 10:32 AM

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Jettie
17 hours ago
I think it's definitely B. The API key is crucial.
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Alana
6 days ago
Installing with apt-get shouldn't matter, right?
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Tequila
11 days ago
Isn't the CLI supposed to work without that?
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Mattie
2 months ago
Wait, you have to restart Docker after setting it up?
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Alecia
2 months ago
I agree, the API key is crucial!
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Malissa
2 months ago
Probably forgot the API key in the config.
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Lavonna
2 months ago
Are you sure it's not a typo in the API key?
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Mozell
3 months ago
A) is not the issue, I installed it manually and it worked fine.
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Tomas
3 months ago
Wait, you need to restart Docker after config? That's new to me.
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Teddy
3 months ago
Definitely B! That's the usual culprit.
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Bulah
3 months ago
Probably forgot to enter the API key.
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Shalon
3 months ago
Restarting the Docker service seems a bit off to me. I don't remember that being necessary for authentication issues.
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Clemencia
3 months ago
I recall a similar practice question where we had to check the config file for the API key. That seems like a likely omission here.
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Anglea
4 months ago
I'm not entirely sure, but I feel like the installation method could affect authentication. Did we cover that in class?
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Helga
4 months ago
I think the issue might be related to the API key. I remember practicing a question where entering the key was crucial.
upvoted 0 times
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