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Cisco 300-635 : Automating Cisco Data Center Solutions (DCAUTO)

300-635

Exam Code: 300-635

Exam Name: Automating Cisco Data Center Solutions (DCAUTO)

Updated: Oct 18, 2026

Q & A: 136 Questions and Answers

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Reference: https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/dcauto-300-635.html?wcmmode=disabled

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Cisco 300-635 Exam Certification Details:

Exam Price$300 USD
Recommended TrainingImplementing Automation for Cisco Data Center Solutions (DCAUI)
Duration90 minutes
Exam NameAutomating and Programming Cisco Data Center Solutions
Number of Questions55-65
Sample QuestionsCisco 300-635 Sample Questions
Passing ScoreVariable (750-850 / 1000 Approx.)
Exam Code300-635 DCAUTO
Exam RegistrationPEARSON VUE

Cisco 300-635 Exam Syllabus Topics:

SectionObjectives
Troubleshooting and Validation- Automation verification and debugging
  • 1. API response validation
    • 2. Configuration drift detection
      Cisco NX-OS and Data Center Switching Automation- NX-OS programmability
      • 1. NETCONF and RESTCONF concepts
        • 2. Automation of switch configuration tasks
          • 3. NX-API usage
            Cisco ACI Automation- Application Centric Infrastructure (ACI) automation
            • 1. APIC REST API interactions
              • 2. ACI object model
                • 3. Policy-based configuration automation
                  Cisco Data Center Automation Fundamentals- Cisco APIs and automation models
                  • 1. REST API usage in Cisco platforms
                    • 2. Data formats (JSON, XML)
                      • 3. Authentication methods (Token, OAuth concepts)
                        Cisco UCS Automation- Unified Computing System (UCS) automation
                        • 1. Service profile automation concepts
                          • 2. UCS Manager APIs
                            Scripting and Automation Tools- Python and automation frameworks
                            • 1. Automation libraries and SDK usage
                              • 2. Ansible playbooks for Cisco environments
                                • 3. Python scripting for network automation

                                  Cisco Automating Cisco Data Center Solutions (DCAUTO) Sample Questions:

                                  Question #1
                                  A network engineer wants to store sensitive variables (such as device passwords and API tokens) inside an Ansible playbook repository without exposing them in plaintext in Git. Which Ansible feature should be used?

                                  A. Ansible Vault to encrypt the variable file, referenced via `ansible-playbook --ask-vault-pass` or a vault password file
                                  B. Storing credentials in `group_vars/all/unsafe.yml` with restricted file permissions
                                  C. Jinja2 `{{ vault }}` filter applied inline to each variable
                                  D. `ansible.cfg` with `remote_user` defined


                                  Question #2
                                  Refer to the exhibit above and click on the resource tabs in the top left corner to view resources to help with this question. An engineer is creating a Python script to update the firmware on a specific Cisco UCS rack server that is managed by Cisco Intersight. The script uses the Cisco Intersight REST API. The value of the 'resource_path' key in the rackunitJson_body Python dictionary retrieves the server with the AssetTag DMZ-R-L2- ADJM. The AssetTag is assigned to only one server. The value of the 'Server' key must be set in the firm ware Json_body Python dictionary with a value from the query result.
                                  Which two Python statements, a GET request and a dictionary update, are required to complete the code? (Choose two.)

                                  A.

                                  B.

                                  C.

                                  D.

                                  E.


                                  Question #3
                                  A set of automation scripts work with no issue from a local machine, but an experiment needs to take place with a new package found online.
                                  How is this new package isolated from the main code base?

                                  A. Create a new virtual environment and perform a pip install of the new package.
                                  B. Add the new package to your requirements.txt file.
                                  C. Perform a pip install of the new package when logged into your local machine as root.
                                  D. Create a new virtual machine and perform a pip install of the new package.


                                  Question #4
                                  A network automation team wants to validate, before deployment, that a set of Jinja2-rendered NX-OS configuration templates produce syntactically valid CLI for multiple device roles (leaf, spine, border-leaf) using different variable files. Which approach best supports this validation at scale in a CI pipeline?

                                  A. Use a templating/rendering step (e.g., `ansible-playbook --check` with `template` module, or a standalone Jinja2 render script) combined with a syntax-checking tool or virtual/simulated device (e.g., Cisco VIRL/CML, or NX-OS in a container) to validate rendered output before touching production
                                  B. Skip validation since Jinja2 templates cannot produce invalid syntax
                                  C. Only test against production devices during a maintenance window
                                  D. Manually paste each rendered template into a console session on a lab switch


                                  Question #5
                                  Using Python's `requests` library to authenticate against the APIC REST API, which of the following code snippets correctly carries the authentication cookie on subsequent requests without re-logging in each time?
                                  python
                                  # Option A
                                  resp = requests.post(url, json=payload, verify=False)
                                  token = resp.json()['imdata'][0]['aaaLogin']['attributes']['token']
                                  headers = {'Cookie': f'APIC-cookie={token}'}
                                  requests.get(next_url, headers=headers, verify=False)
                                  # Option B
                                  session = requests.Session()
                                  session.post(url, json=payload, verify=False)
                                  session.get(next_url, verify=False)

                                  A. Only Option B is correct
                                  B. Neither works, because APIC requires a Bearer Token, not a Cookie
                                  C. Only Option A is correct
                                  D. Both work correctly, but through different mechanisms


                                  Solutions:

                                  Question #1
                                  Correct Answer: A
                                  Question #2
                                  Correct Answer: B,C
                                  Question #3
                                  Correct Answer: A
                                  Question #4
                                  Correct Answer: A
                                  Question #5
                                  Correct Answer: D

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