Quick Answer
The answer is that the network is not fully provisioned yet; a delay is needed. This is correct because the Meraki API handles network creation as an asynchronous operation, meaning the API call returns a success status before the underlying infrastructure—such as virtual LANs, DHCP scopes, and firewall rules—is fully built. Attempting to configure an SSID immediately triggers a 400 error with 'network is not ready' because the network remains in a pending or provisioning state. On the Cisco DevNet Associate 200-901 exam, this scenario tests your understanding of asynchronous provisioning delays and the need for polling or retry logic when chaining API calls. A common trap is assuming synchronous behavior, where you expect the network to be ready instantly after the creation response. Remember the memory tip: "Create then wait—don't configure too late, but don't configure too early."
This 200-901 practice question tests your understanding of understanding and using apis. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A Python script uses the Cisco Meraki API to create a new network and then immediately attempts to configure an SSID on that network. The SSID creation fails with a 400 error indicating 'network is not ready'. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
The network is not fully provisioned yet; a delay is needed.
Asynchronous provisioning requires waiting.
The API rate limit has been exceeded.
Why wrong: Rate limiting returns 429, not 400.
The API key does not have write access to networks.
Why wrong: Insufficient permissions return 403.
The SSID name contains invalid characters.
Why wrong: Invalid format returns a different 400 error.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The network is not fully provisioned yet; a delay is needed.
The Meraki API returns a 400 error with 'network is not ready' because creating a network is an asynchronous operation. The network's underlying infrastructure (e.g., virtual LANs, DHCP scopes, firewall rules) must be fully provisioned before it can accept SSID configurations. Attempting to configure an SSID immediately after creation fails because the network is still in a 'pending' or 'provisioning' state, requiring a polling delay or retry logic.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The network is not fully provisioned yet; a delay is needed.
Why this is correct
Asynchronous provisioning requires waiting.
Clue confirmation
The clue words "most likely", "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
The API rate limit has been exceeded.
Why it's wrong here
Rate limiting returns 429, not 400.
The API key does not have write access to networks.
Why it's wrong here
Insufficient permissions return 403.
The SSID name contains invalid characters.
Why it's wrong here
Invalid format returns a different 400 error.
Common exam traps
Cisco often tests the misconception that API calls are synchronous and that a successful creation response means the resource is immediately usable, ignoring the asynchronous provisioning that occurs in cloud-managed platforms like Meraki.
Detailed technical explanation
Under the hood, Meraki network creation triggers a series of backend provisioning tasks (e.g., configuring VLANs, DHCP pools, and security policies) that are queued and executed asynchronously. The API's POST /networks endpoint returns a 201 Created immediately, but the network's 'ready' status is only set after the provisioning pipeline completes. In real-world scenarios, this delay can vary from a few seconds to over a minute depending on the organization's size and network complexity, making exponential backoff or polling the network's 'status' field essential for robust automation.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 200-901 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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Understanding and Using APIs — This question tests Understanding and Using APIs — Read the scenario before looking for a memorised answer..
The correct answer is: The network is not fully provisioned yet; a delay is needed. — The Meraki API returns a 400 error with 'network is not ready' because creating a network is an asynchronous operation. The network's underlying infrastructure (e.g., virtual LANs, DHCP scopes, firewall rules) must be fully provisioned before it can accept SSID configurations. Attempting to configure an SSID immediately after creation fails because the network is still in a 'pending' or 'provisioning' state, requiring a polling delay or retry logic.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "most likely", "immediately / without restart". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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