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Cisco 300-635 Exam Overview:

Certification Vendor:	Cisco
Exam Name:	Automating Cisco Data Center Solutions
Exam Number:	300-635 DCAUTO
Exam Price:	$300 USD
Exam Format:	Multiple Choice, Computer-Based Testing, Multiple Response, Scenario Based
Exam Duration:	90 minutes
Passing Score:	Pass/Fail
Related Certifications:	Cisco Certified DevNet Professional Cisco Certified Automation Specialist - Data Center Automation and Programmability CCNP Data Center
Available Languages:	English, Japanese
Sample Questions:	Cisco 300-635 Sample Questions
Exam Way:	Delivered via Pearson VUE testing centers and online proctored exam.
Pre Condition:	Recommended experience with Cisco data center technologies (CCNP Data Center level) and basic programming/automation knowledge.
Official Syllabus URL:	https://www.cisco.com/site/us/en/learn/training-certifications/exams/dcauto.html

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Cisco 300-635 exam tests the candidate's proficiency in using Cisco's programmable network architecture to automate data center tasks and operations. 300-635 exam also evaluates the candidate's ability to use programming languages such as Python and JSON to automate network tasks and configurations. Passing 300-635 exam demonstrates that the candidate has the skills and knowledge required to design, deploy, and manage Cisco data center automation solutions. Automating Cisco Data Center Solutions (DCAUTO) certification obtained after passing 300-635 Exam is valid for three years and provides the candidate with a competitive edge in the job market by showcasing their expertise in automating Cisco data center solutions.

Cisco Automating Cisco Data Center Solutions (DCAUTO) Sample Questions (Q16-Q21):

NEW QUESTION # 16
An engineer uses Python's `ncclient` library to push configuration to a Nexus 9000 over NETCONF. The script raises an `RPCError`, but device logs show the configuration was actually applied. Which of the following is the most likely root cause?

A. The configuration payload used an undefined namespace prefix
B. The ncclient version is incompatible with the NX-OS YANG models
C. The NETCONF session did not advertise the `:candidate` capability, so the target datastore has no candidate/commit model; the device applied the change directly to running, but returned an incompatible response to the subsequent `commit` RPC, which the client interpreted as an error
D. `edit-config` targeted `running` instead of `candidate`, and `commit` was never issued

Answer: C

Explanation:
This is the classic "config applied, client still errors" trap. If the device doesn't support the candidate datastore, an `edit-config` against `running` takes effect immediately (NX-OS has no two-phase candidate/commit model by default). If the script logic still calls `commit()` assuming candidate support, the device returns an error for an RPC it doesn't recognize in that context, and ncclient surfaces this as `RPCError` - even though the change already took effect. This tests understanding of the `<hello>` capability exchange in NETCONF.

NEW QUESTION # 17
Refer to the exhibit:

Refer to the exhibit. Which configuration change command must be run on the Cisco NX-OS device to make this command work?

A. bash-shell enable
B. feature bash-shell
C. service bash-shell
D. enable bash-shell

Answer: B

NEW QUESTION # 18
An engineer is asked to justify, in a design review, why their team chose to implement network automation using a combination of Ansible for configuration push and pyATS/Genie for state validation, rather than relying solely on Ansible's `changed`/`failed` status as the definition of
"success." Which statement best articulates the technical justification expected at this exam's difficulty level?

A. `changed`/`failed` status and true operational correctness are always equivalent, so pyATS/Genie is redundant
B. pyATS/Genie is required because Ansible cannot connect to Cisco devices at all
C. Ansible's `changed`/`failed` status only reflects whether the automation tool successfully executed its intended module logic (e.g., pushed configuration or detected no diff); it does not independently verify that the resulting live operational state of the network matches the intended design, which requires a separate state-validation layer like pyATS/Genie querying and asserting against actual device operational data
D. Using two separate tools is purely a matter of preference with no technical justification

Answer: C

Explanation:
This capstone-style question ties together the recurring theme across this set: automation
"success" as reported by a configuration-management tool (task completed, no errors, config pushed or already matching) is a different guarantee than "the network is actually operating as intended" (protocols converged, neighbors up, traffic forwarding correctly). Robust designs separate these concerns - declarative configuration tools (Ansible) for desired-state enforcement, and operational-state validation tools (pyATS/Genie) for independently confirming the live network matches intent - rather than conflating the two, which is exactly the trap in options C and D: Ansible fully supports Cisco device connectivity via its network collections, so B is false.

NEW QUESTION # 19
How should the Kubernetes manifests be modified to allow Kubernetes environment integration with Cisco ACI?

A. The manifests must include ACI EPG reference
B. No change is needed to perform this action.
C. The metadata section must contain the Cisco APIC management IP
D. The manifest does not have to be changed, but the Kubemetes object is not discovered by Cisco ACI if this is not defined in the manifest

Answer: A

Explanation:
In order to integrate a Kubernetes environment with Cisco ACI, the Kubernetes manifests typically need to include references to ACI End Point Groups (EPGs). This allows for the application components within Kubernetes to be associated with the networking policies defined in ACI, ensuring consistent network policy application across both environments. References: Since I can't provide direct links to external sources, I recommend checking Cisco's official documentation and training materials for the most accurate and up-to-date information.

NEW QUESTION # 20
A co-worker is using Cisco Intersight to determine the maximum available memory per server for their company's data center. Drag and drop the code to complete the Cisco Intersight API call that provides the desired results. Not all options are used.

Answer:

Explanation:

NEW QUESTION # 21
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