CiscoProfessional level300-435

300-435 exam dumps: 321 free Cisco ENAUTO practice questions

Free 300-435 practice questions for the Automating Cisco Enterprise Solutions exam, with the correct answer and a full explanation for every option. Read the first 10 below, browse all 321 by number, or take a timed practice exam.

Question bank last updated February 2025

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Free 300-435 practice questions

Questions 1 to 10 of 321

Pick an answer before you open the explanation. Each question also has its own page with a permalink.

300-435 Question 1

Single answer

A network engineer is automating a multi-vendor network environment using RESTful APIs. They need to retrieve information about operational data, such as interface status, from a Cisco device. Which HTTP method should they use to ensure the API request is aligned with RESTful principles?

A
GET
B
POST
C
PUT
D
DELETE

Show answer and explanation

Correct answer: A

Explanation

In RESTful APIs, the GET method is specifically designed for retrieving information from a server without modifying the resource. Operational data, such as interface status, can be fetched using the GET method to ensure compliance with RESTful principles and avoid unintended changes to the data.

A. Correct.
GET is the appropriate HTTP method for retrieving data from a resource without making any changes to it, which aligns with the requirement to retrieve operational data.
B. Incorrect.
POST is used to create new resources or submit data to a resource for processing, but it is not suitable for retrieving data.
C. Incorrect.
PUT is used to update or replace an existing resource, which does not align with the requirement to retrieve operational data.
D. Incorrect.
DELETE is used to remove a resource from the server, which is unrelated to retrieving operational data.

300-435 Question 2

Single answer

A network engineer is tasked with automating the configuration of a Cisco network using Python and NETCONF. The engineer decides to use the ncclient library to establish a connection to a network device and retrieve its running configuration. Which key action must the engineer perform to successfully establish the NETCONF session and retrieve the desired configuration?

A
Ensure that the NETCONF port (830) is open and accessible on the network device
B
Install the Cisco-specific NETCONF schema files on the Python environment
C
Enable SNMP on the network device for communication with ncclient
D
Use an SSH key pair for authentication instead of a username and password

Show answer and explanation

Correct answer: A

Explanation

To successfully establish a NETCONF session with a network device using ncclient, the engineer must ensure that the NETCONF service is enabled and the default port (830) is open and accessible. NETCONF relies on SSH for communication, but this does not mandate the use of SSH keys. SNMP and schema installation are unrelated to the ncclient library's functionality.

A. Correct.
This is correct. NETCONF operates over port 830 by default, and this port must be open and accessible for the ncclient library to establish a session.
B. Incorrect.
This is incorrect. While NETCONF uses XML-based data models, the ncclient library does not require pre-installation of Cisco-specific schema files. The library interacts with the device's built-in NETCONF capabilities.
C. Incorrect.
This is incorrect. NETCONF and SNMP are separate protocols. NETCONF does not rely on SNMP for communication.
D. Incorrect.
This is incorrect. While SSH is used for NETCONF connectivity, username and password authentication is commonly used. SSH key-based authentication is an option but not a requirement.

300-435 Question 3

Select 3

Your team is tasked with automating the configuration of a large-scale Cisco SD-Access deployment. You decide to use Python and Cisco DNA Center APIs to achieve this. Which key concepts of network programmability should you consider to ensure the solution is scalable and maintainable?

A
Use REST-based APIs to interact programmatically with Cisco DNA Center
B
Implement hard-coded IP addresses and credentials within your Python scripts for faster execution
C
Utilize data models such as YANG to ensure consistency in network configuration
D
Incorporate version control for your Python scripts to track changes effectively
E
Rely solely on CLI-based automation for granular control over the network configuration

Show answer and explanation

Correct answers: A, C, D

Explanation

To ensure scalability and maintainability in network automation, leveraging REST APIs, structured data models (e.g., YANG), and software development best practices such as version control are critical. Hard-coding sensitive information like IP addresses or relying solely on CLI-based methods introduces risks and reduces the efficiency of the solution.

A. Correct.
REST-based APIs are a foundational element of network programmability, enabling programmatic interactions with platforms like Cisco DNA Center.
B. Incorrect.
Hard-coding IP addresses and credentials is a poor practice as it reduces maintainability and poses security risks.
C. Correct.
Data models like YANG provide a structured way to define and enforce configuration consistency across network devices.
D. Correct.
Version control systems like Git are essential for tracking changes, enabling collaboration, and ensuring maintainability of code.
E. Incorrect.
CLI-based automation is less scalable and lacks the abstraction and flexibility provided by modern APIs and data models.

300-435 Question 4

Single answer

As a network engineer, you want to automate the configuration of multiple Cisco devices in your enterprise network. You decide to use Python and the Cisco REST API to achieve this. During your implementation, you realize that you need to retrieve operational data such as interface statuses and device health metrics. Which of the following methods would be the most appropriate for this task?

A
Use a GET request to the Cisco RESTCONF API with the appropriate YANG model
B
Use a POST request to the Cisco RESTCONF API to retrieve the required data
C
Leverage SNMP to poll the devices for operational data
D
Use a Python script with direct SSH to the devices to retrieve the data

Show answer and explanation

Correct answer: A

Explanation

The Cisco RESTCONF API, combined with the YANG model, provides a standardized and efficient way to retrieve operational and configuration data from Cisco devices. A GET request is specifically designed to fetch data, making it the most appropriate method for this task in a network programmability context.

A. Correct.
Using a GET request to the Cisco RESTCONF API is the correct approach for retrieving operational data as it aligns with the REST API's design principles for data retrieval. The YANG model provides the schema for accessing operational and configuration data.
B. Incorrect.
POST requests are used to create or modify resources, not to retrieve data. Using POST for retrieving data would be incorrect in this context.
C. Incorrect.
While SNMP can retrieve operational data, it is not aligned with the modern programmability approach emphasized in this exam. Cisco RESTCONF API is the preferred method.
D. Incorrect.
Using a Python script with direct SSH could retrieve the data, but it is not as efficient or scalable as using the REST API. It also lacks the standardization provided by RESTCONF and YANG models.

300-435 Question 5

Select 3

A network automation engineer is working on a Git repository for a Cisco enterprise solution project. They need to add a new feature and collaborate with other team members. The engineer creates a new branch, makes several changes to the code, and commits the changes. When attempting to merge the branch into the main branch, a merge conflict arises. What steps should the engineer take to resolve the conflict and complete the merge?

A
Identify the conflicting files and manually resolve the differences.
B
Use the 'git merge --force' command to override the conflict and complete the merge.
C
Stage the resolved files and create a new commit to finalize the merge.
D
Delete the branch with the conflict and create a new branch to start over.
E
Use the 'git diff' command to inspect the changes causing the conflict.

Show answer and explanation

Correct answers: A, C, E

Explanation

To resolve a merge conflict in Git, the engineer must identify and manually resolve the conflicts in the affected files. This can be done by using tools like 'git diff' to inspect the changes. Once resolved, the engineer must stage the resolved files and commit them to complete the merge process. Overriding or deleting branches is not a recommended practice, as it could result in loss of work or additional complications.

A. Correct.
Correct. When a merge conflict occurs, the engineer must identify the conflicting files and manually resolve the differences in the code.
B. Incorrect.
Incorrect. The 'git merge --force' command does not exist and forcefully overriding conflicts is not a standard or safe practice in Git.
C. Correct.
Correct. After resolving the conflicts, the engineer needs to stage the resolved files and create a new commit to finalize the merge.
D. Incorrect.
Incorrect. Deleting the branch is unnecessary and counterproductive. The engineer can resolve conflicts without discarding the branch.
E. Correct.
Correct. The 'git diff' command helps inspect the changes and identify the root cause of the conflict, which aids in resolving it.

300-435 Question 6

Select 3

You are working on a team project and have cloned the repository to your local machine. After making changes to a file named config.yaml, you attempt to push your changes but encounter a conflict because a teammate has also updated the same file. Which of the following steps must you take to resolve the conflict and successfully push your changes?

A
Pull the latest changes from the remote repository to your local branch.
B
Manually resolve the conflict in the config.yaml file and mark it as resolved.
C
Commit your local changes before pulling the latest changes from the remote branch.
D
Push your unresolved changes directly to the remote repository.
E
Stage the resolved config.yaml file and commit the changes.

Show answer and explanation

Correct answers: A, B, E

Explanation

When a conflict occurs in Git due to changes in the same file by multiple contributors, you must first pull the latest changes to your local branch. Then, manually resolve the conflicts in the affected files. After resolving the conflict, the file must be staged and committed before you can successfully push the changes to the remote repository. This ensures the repository remains consistent and conflict-free.

A. Correct.
Pulling the latest changes ensures your local branch is updated with the remote changes and is necessary for resolving conflicts.
B. Correct.
Conflicts must be manually resolved in the affected file before proceeding, as Git cannot automatically resolve such issues.
C. Incorrect.
You should not commit your changes before pulling the latest updates because doing so can create further conflicts.
D. Incorrect.
Unresolved changes cannot be pushed to the remote repository. Git requires all conflicts to be resolved and committed first.
E. Correct.
Once conflicts are resolved, the resolved file must be staged and committed to finalize the changes before pushing them.

300-435 Question 7

Select 3

You are part of a DevOps team managing a Cisco SD-WAN automation project. Your team is using Git for version control. A colleague has pushed a new feature branch to the remote repository, and you need to integrate it into the main branch. However, when performing the merge, a conflict occurs with a file named 'policy.yaml'. Which of the following steps should you take to resolve the conflict and complete the merge successfully?

A
Open the 'policy.yaml' file, manually resolve the conflict, and then stage the resolved file using 'git add policy.yaml'.
B
Run 'git merge --skip' to bypass the conflicted file and complete the merge.
C
Use 'git diff' to review the changes that caused the conflict in 'policy.yaml'.
D
After resolving the conflict, run 'git commit' to finalize the merge.
E
Run 'git clone' to create a fresh copy of the repository and retry the merge.

Show answer and explanation

Correct answers: A, C, D

Explanation

When a merge conflict occurs in Git, you must manually resolve the conflict by editing the affected files, use 'git add' to stage the resolved files, and then run 'git commit' to complete the merge. 'git diff' helps you review the conflicting changes. Other commands like 'git merge --skip' or cloning the repository are not appropriate for resolving conflicts.

A. Correct.
Correct: Resolving the conflict manually and staging the resolved file with 'git add' is a necessary step to indicate that the conflict has been handled.
B. Incorrect.
Incorrect: 'git merge --skip' is used to skip the conflicted commit entirely, which is not recommended when resolving merge conflicts as it ignores the changes.
C. Correct.
Correct: 'git diff' is useful for reviewing the differences that caused the conflict, helping you understand how to resolve it properly.
D. Correct.
Correct: After resolving the conflict and staging the changes, you must run 'git commit' to finalize the merge process.
E. Incorrect.
Incorrect: Cloning the repository again does not address the conflict and is unnecessary. The conflict must be handled directly within the current repository.

300-435 Question 8

Select 3

A network automation engineer is working on a Git repository for a Cisco Enterprise automation project. The engineer has made changes to multiple files and wants to upload these changes to the remote repository. However, upon attempting to push the changes, a merge conflict occurs. What actions should the engineer take to resolve the merge conflict and successfully push their changes?

A
Use 'git diff' to inspect the conflicting changes and identify the differences.
B
Use 'git clone' to re-download the repository and overwrite the local changes.
C
Manually edit the conflicted files to resolve the conflicts, then mark them as resolved using 'git add'.
D
Use 'git push --force' to overwrite the changes in the remote repository.
E
Commit the resolved changes locally and then push again to the remote repository.

Show answer and explanation

Correct answers: A, C, E

Explanation

When a merge conflict occurs in Git, the engineer must first identify the conflicting changes using tools such as 'git diff'. They must then manually resolve the conflicts in the affected files and mark them as resolved using 'git add'. Once the conflicts are resolved, the resolved changes need to be committed locally. Finally, the engineer can push the changes to the remote repository. This process ensures that the integrity of the repository and collaboration is maintained.

A. Correct.
Correct: 'git diff' helps identify the differences in the conflicting files, making it easier to resolve the conflict.
B. Incorrect.
Incorrect: Re-cloning the repository will overwrite the local changes and does not resolve the conflict. This is not a proper way to handle merge conflicts.
C. Correct.
Correct: Manually resolving the conflicts in the files and marking them as resolved using 'git add' is necessary to proceed.
D. Incorrect.
Incorrect: Using 'git push --force' will overwrite the remote changes, which is not recommended in collaboration scenarios as it may cause data loss.
E. Correct.
Correct: After resolving the conflicts and staging the changes, committing them locally and pushing again is the correct procedure.

300-435 Question 9

Select 2

As part of the automation workflow for a Cisco enterprise solution, you are using Git to manage your configuration files. You cloned a repository and created a new branch to implement changes. After making modifications in multiple files, you realize you need to save your progress and push these changes to the remote repository for collaboration. However, upon pushing, you encounter an error indicating that your branch is behind the remote branch. What should you do to resolve this issue?

A
Use 'git pull' to fetch and merge the changes from the remote branch into your current branch.
B
Use 'git commit' to save your changes locally and then push again.
C
Resolve any merge conflicts if they arise during the pull operation.
D
Force push your changes using 'git push --force'.
E
Create a new branch to avoid the conflict and push that branch instead.

Show answer and explanation

Correct answers: A, C

Explanation

When you encounter an error indicating that your branch is behind the remote branch, the correct approach is to use 'git pull' to fetch and merge changes from the remote branch into your current branch. If any merge conflicts arise during this process, they must be resolved before you can push your changes successfully. Force pushing or creating a new branch are not appropriate solutions in this scenario as they do not address the conflict and can disrupt collaboration.

A. Correct.
This is correct. 'git pull' fetches the latest changes from the remote branch and merges them into your current branch, which resolves the issue of being behind the remote branch.
B. Incorrect.
This is incorrect. 'git commit' only saves changes locally and would not resolve the issue of your branch being behind the remote branch.
C. Correct.
This is correct. If merge conflicts arise during the 'git pull' operation, you must resolve them before proceeding to push your changes.
D. Incorrect.
This is incorrect. Using 'git push --force' overwrites changes on the remote branch, which can cause data loss and is not recommended in collaborative environments.
E. Incorrect.
This is incorrect. Creating a new branch does not address the underlying issue of your branch being behind the remote branch.

300-435 Question 10

Single answer

A network engineer is designing an automation solution to integrate with a Cisco device using APIs. The solution requires lightweight communication with stateless interactions and must leverage widely adopted standards for web-based APIs. Which API style would be most suitable for this use case?

A
REST
B
RPC (Remote Procedure Call)
C
SOAP (Simple Object Access Protocol)
D
GraphQL

Show answer and explanation

Correct answer: A

Explanation

REST is the most suitable API style for this scenario because it is lightweight, stateless, and widely adopted for web-based communications. It offers simplicity and flexibility, making it a popular choice for API integrations with Cisco devices and other systems.

A. Correct.
REST (Representational State Transfer) is a lightweight and widely adopted API style that emphasizes stateless interactions, making it ideal for web-based communication and integration.
B. Incorrect.
RPC (Remote Procedure Call) is more procedural and focuses on executing functions or methods remotely, which may not be the best fit for lightweight, stateless web-based interactions.
C. Incorrect.
SOAP is a protocol-based API style that is heavyweight and relies on XML-based messaging, making it less suitable for lightweight and simple implementations.
D. Incorrect.
GraphQL is a query language for APIs that allows clients to fetch only specific data they need, but it is not as focused on stateless interactions as REST and is less widely supported in Cisco platforms.

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No. These are original practice questions written to the Automating Cisco Enterprise Solutions exam objectives, not questions copied from a live exam. Memorising leaked questions violates Cisco's candidate agreement and stops working the moment the question pool rotates. Use this bank to check your understanding of each domain and to find the topics you still need to study.

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321 questions, each with the correct answer, an explanation of the answer, and a note on why every other option is wrong. The first 10 are on this page and every question has its own page linked below.

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