Developing with Cisco Network Programmability Free Practice Test — 30 Questions

Question 1

Consider a network engineering team tasked with integrating a new fleet of specialized environmental sensors across a large campus using Cisco DNA Center. During the initial automated provisioning phase, a significant portion of these sensors fail to acquire their intended network configurations, exhibiting intermittent connectivity and unexpected behavior. The team\'s automated workflows, designed for seamless device onboarding, are now proving ineffective against this emergent challenge. Which of the following behavioral competencies is MOST critical for the team to effectively navigate this situation and ensure the successful integration of the IoT devices?

Accepted Answer

Adaptability and Flexibility

Question 2

A network automation team is experiencing intermittent failures when deploying BGP and QoS configurations to Cisco core routers following an upgrade to a new Cisco IOS XE version. The Ansible playbooks, previously functional, now report errors related to invalid command syntax and authentication issues. Considering the dynamic nature of network operating system updates and their impact on programmability, what is the most critical immediate action the team must undertake to restore reliable automation?

Accepted Answer

Update the Ansible playbooks to reflect any syntax changes, deprecated commands, or new configuration requirements introduced in the updated Cisco IOS XE version.

Question 3

A network automation team, responsible for managing a large Cisco infrastructure, is tasked with integrating a novel streaming telemetry solution that leverages modern data modeling techniques. However, the team exhibits a degree of inertia, preferring established, albeit less flexible, configuration methods over the proposed YANG-based models. This reluctance is primarily attributed to a perceived complexity and unfamiliarity with the new data modeling paradigm, impacting their ability to adapt to evolving industry standards. The team lead, observing this, decides to proactively address the situation by instituting a series of targeted learning initiatives. What core behavioral competency, when effectively fostered, would most directly enable the team to overcome this resistance and successfully adopt the new telemetry framework?

Accepted Answer

Learning Agility

Question 4

A network automation team is developing a Python-based solution to provision a fleet of Cisco devices. During the initial rollout, they discover that a significant portion of the deployed infrastructure runs an older, undocumented version of the network operating system that is not fully compatible with the current automation framework\'s assumptions about device behavior and configuration syntax. The project timeline is tight, and the team needs to maintain momentum while ensuring successful device configuration. Which behavioral competency is most critical for the team to exhibit in this situation to effectively navigate the unforeseen technical challenge?

Accepted Answer

Adapting the automation framework to incorporate specific handling for the legacy operating system.

Question 5

A network automation team, deeply immersed in developing a Python-based solution for dynamic traffic engineering using NETCONF and YANG models, is abruptly informed of a new government regulation mandating strict anonymization of all user data traversing the network within 90 days. This regulation significantly alters the project\'s immediate scope and requires the team to shift focus from optimization to compliance. Considering the team\'s expertise in network programmability, which of the following strategic adjustments best reflects a balanced approach to both immediate regulatory adherence and the preservation of long-term network programmability goals?

Accepted Answer

Immediately halt all ongoing traffic engineering development, reassign all engineers to solely focus on building a comprehensive data anonymization layer using custom Python scripts and network configuration templates, and postpone all optimization efforts indefinitely until full compliance is verified.

Question 6

A team of network engineers is tasked with building a sophisticated, multi-vendor network orchestration platform using Python and Ansible. Midway through a sprint focused on implementing advanced BGP policy automation, a critical, widely-used open-source library that underpins their entire data model parsing mechanism is abruptly deprecated by its maintainers, with no immediate alternative provided. The project deadline remains firm, and client expectations for the BGP features are high. Which behavioral competency is most crucial for the team to effectively navigate this sudden and significant disruption to their development workflow?

Accepted Answer

Adaptability and Flexibility

Question 7

A network automation initiative aims to transition a large enterprise\'s infrastructure management from traditional command-line interfaces (CLIs) to a model-driven approach leveraging YANG data models and NETCONF. The implementation team, comprised of engineers with extensive experience in vendor-specific CLIs, is exhibiting significant reluctance. They express concerns about the learning curve, the perceived loss of granular control, and the potential for abstracting away critical operational details. This resistance is manifesting as delays in adopting the new automation tools and a preference for reverting to familiar CLI-based troubleshooting. Which of the following behavioral competencies is most directly challenged by this team\'s reaction, requiring strategic intervention?

Accepted Answer

Adaptability and Flexibility

Question 8

A global financial services firm is tasked with implementing a new regulatory mandate that requires all inter-branch communication involving Personally Identifiable Information (PII) to be encrypted using a specific cipher suite and routed through a dedicated, audited network segment. The network infrastructure comprises a mix of Cisco routers and switches, and a Cisco Application Centric Infrastructure (ACI) fabric. The compliance team has provided the new requirements in a detailed JSON document. Which of the following development approaches would best demonstrate the firm\'s commitment to adapting its network programmability strategy to meet these evolving compliance demands while maintaining operational efficiency and technical rigor?

Accepted Answer

Develop a Python script that parses the JSON compliance document, extracts the necessary encryption and routing parameters, and then uses the `ncclient` library to push NETCONF-based configuration changes to the ACI fabric's EPGs and VRFs, while simultaneously using `netmiko` to apply corresponding security policies on the edge routers.

Question 9

A network engineering team is developing an automated network configuration solution using Python and a YANG-based data model to manage a fleet of network devices for a new microservices deployment. During initial testing, they observe that applying the automation script a second time results in unexpected configuration changes, causing a state drift on several devices, despite the script being designed for idempotent operations. Which of the following best describes the most crucial behavioral and technical competencies the team must exhibit to effectively diagnose and resolve this issue, ensuring reliable and predictable network state management?

Accepted Answer

Demonstrating strong problem-solving abilities by systematically analyzing the script's state comparison logic, verifying YANG model fidelity, and adapting their approach based on empirical testing to ensure true idempotency.

Question 10

A network automation team, leveraging Python and network device APIs, is suddenly faced with widespread script failures. These failures stem from the integration of a new network hardware vendor whose proprietary command-line interface (CLI) syntax and output formatting significantly deviate from the established automation framework, which was previously optimized for a single vendor. The team must quickly restore automated provisioning and troubleshooting capabilities while minimizing service disruption. Which behavioral competency should be the team\'s primary focus to navigate this immediate challenge and ensure long-term success in a multi-vendor environment?

Accepted Answer

Adaptability and Flexibility

Question 11

A network automation initiative aims to modernize infrastructure management by leveraging a new Python-based framework for interacting with network devices via a RESTful API. During the pilot phase, the development team observes that certain older network appliances, while capable of basic API calls, respond inconsistently to error conditions, sometimes returning generic 200 OK status codes for operations that clearly failed or omitting expected error details. This ambiguity significantly hinders the reliability of automated tasks. Which behavioral competency is most critical for the team to effectively navigate this situation and ensure successful project completion?

Accepted Answer

Adaptability and Flexibility

Question 12

A network engineering team is implementing a new Cisco SD-WAN solution using an intent-based networking (IBN) approach. During the initial rollout, a critical routing policy change, intended to optimize traffic flow for a new cloud-based application, causes intermittent connectivity issues for a significant user segment. The team\'s initial troubleshooting, based on direct configuration translation from the previous platform, proves ineffective. What core behavioral competency is most critical for the team to demonstrate to successfully navigate this situation and restore service?

Accepted Answer

Adaptability and Flexibility

Question 13

A network automation initiative leverages a Python script utilizing NETCONF to dynamically update Quality of Service (QoS) policies across a fleet of Cisco Catalyst 9300 switches. While the script successfully connects and retrieves data, it encounters intermittent failures when applying configuration changes to specific switches, reporting generic NETCONF errors. The team has confirmed the script\'s syntax is correct and the YANG models are appropriately referenced. The failures occur when attempting to modify active QoS policy maps. Which of the following strategies best addresses this situation by demonstrating adaptability and deep technical understanding of network state management in programmability?

Accepted Answer

Implementing pre-validation checks to ensure QoS policies are not actively referenced by interfaces before attempting modifications, and potentially including operational state retrieval to confirm policy detachments if necessary.

Question 14

Consider a network automation team tasked with migrating a critical segment of the enterprise network to a new, API-driven infrastructure-as-code (IaC) platform. During the initial pilot phase, the team discovers significant undocumented dependencies between legacy network services and the new IaC modules, leading to unexpected service disruptions. Furthermore, several senior network engineers express skepticism about the new methodology, citing concerns about its reliability and the learning curve involved. The project timeline is now at risk, and team morale is declining due to the unforeseen complexities and resistance. Which strategic adjustment best demonstrates the team\'s adaptability and problem-solving abilities in this context?

Accepted Answer

Implement a phased migration strategy, prioritizing education and support for network engineers, establishing clear communication channels for feedback, and iteratively refining IaC modules based on real-world integration testing and user input.

Question 15

A distributed network automation platform, responsible for configuring and managing a global enterprise network, has deployed a new version of its core orchestration engine. Shortly after the deployment, network devices begin exhibiting intermittent connectivity issues, and automation tasks are failing with cryptic error messages. The operations team is under pressure to restore full network functionality rapidly, while also needing to understand the root cause to prevent recurrence. Which of the following approaches best reflects a balanced strategy that addresses both immediate service restoration and long-term resilience, while showcasing critical behavioral competencies like adaptability, problem-solving, and teamwork?

Accepted Answer

Initiate an immediate rollback of the new orchestration engine version, concurrently engage cross-functional teams (network engineering, software development) to analyze logs and telemetry from affected devices and the automation platform, hypothesize potential causes related to the new version's interaction with specific network hardware or protocols, and conduct targeted testing to validate hypotheses, followed by a thorough post-mortem analysis to identify systemic weaknesses and refine deployment processes.

Question 16

Anya, a network engineer, is tasked with implementing a new zero-trust security segmentation policy within a large enterprise network managed by Cisco DNA Center. This policy aims to isolate Internet of Things (IoT) devices from sensitive corporate resources, ensuring that only authorized communication flows are permitted. Anya defines the segmentation policy in Cisco DNA Center, specifying the source and destination groups, and the allowed communication protocols between them. Considering the integrated nature of Cisco DNA Center with Cisco Identity Services Engine (ISE) for identity-based access control, what is the fundamental process by which this new segmentation policy is translated and enforced across the network infrastructure?

Accepted Answer

Cisco DNA Center translates the abstract segmentation policy into specific network configurations, such as Access Control Lists (ACLs) and Quality of Service (QoS) policies, which are then provisioned onto the relevant network access devices and core network infrastructure, dynamically leveraging identity information from ISE for granular enforcement.

Question 17

A network engineering team is implementing an automated deployment for a new enterprise branch office, utilizing a Python framework with NETCONF for configuration and YANG models for data representation. However, policy directives are currently communicated through unstructured emails and verbal discussions, leading to inconsistencies and potential errors in automated provisioning. Which strategy best addresses the team\'s need to improve the reliability and clarity of policy application within their automation workflow, aligning with principles of adaptability and systematic problem-solving?

Accepted Answer

Develop a custom YANG model to define and enforce network policy parameters, enabling machine-readable policy consumption by the automation framework.

Question 18

A network engineering team is developing a Python-based automation solution leveraging Cisco NSO to deploy complex multi-service network configurations. During testing, they observe that certain granular security policies, intended to be applied concurrently with other service parameters, are intermittently not being enforced. The automation script utilizes NETCONF calls to NSO, but the failure pattern suggests a temporal dependency issue rather than a syntax error. Which of the following strategies best addresses the underlying challenge of ensuring reliable and sequential application of interdependent network configurations within an automated workflow, considering the potential for race conditions in transaction management?

Accepted Answer

Implement a robust transaction commit strategy within the Python script that explicitly waits for confirmation of successful configuration application before initiating subsequent NETCONF operations, potentially using NSO's transaction status callbacks or polling for configuration state changes.

Question 19

A network automation team is experiencing intermittent failures in their Python scripts that interact with Cisco routers via NETCONF using the `ncclient` library. These scripts, designed for configuring interface descriptions and verifying BGP neighbor states, were functioning correctly until a recent Cisco IOS XE upgrade on the managed devices. The team suspects a problem with their script\'s interaction with the network devices. Considering the potential for network operating system upgrades to alter NETCONF capabilities, which of the following actions would be the most effective initial step to diagnose and resolve the issue, demonstrating adaptability in network programmability practices?

Accepted Answer

Query the device's NETCONF capabilities using the `ietf-netconf-monitoring` YANG module to identify supported RPC operations and adapt the script accordingly.

Question 20

Anya, a lead network automation engineer, is overseeing the development of a Python application designed to automate the deployment of Cisco Catalyst switches. The project timeline is tight, but a significant roadblock has emerged: the required integration with an existing, but poorly documented, legacy monitoring system that utilizes a custom binary protocol. This integration is proving more complex than anticipated, requiring substantial reverse-engineering efforts. Concurrently, a critical security vulnerability has been discovered in a widely deployed network segment, forcing a reallocation of engineering resources and a re-prioritization of project goals from rapid feature deployment to robust security patching and system hardening. Anya must now guide her team through this shift, address the technical integration challenges with the legacy system, and manage the team\'s morale, which has been impacted by the unexpected difficulties and the change in project direction. Which behavioral competency is most critically being tested in Anya\'s leadership of this evolving situation?

Accepted Answer

Adaptability and Flexibility

Question 21

A network engineering team is implementing a new automated configuration management system using Python and Ansible for a diverse set of Cisco routers and switches. During the initial deployment, they observe inconsistent application of configuration templates, leading to intermittent network disruptions. The team suspects that subtle differences in device software versions and the dynamic nature of the network environment are contributing factors. Which behavioral competency combination is most critical for the team to effectively address this situation, ensuring minimal impact on ongoing operations while achieving the automation goals?

Accepted Answer

Adaptability and Flexibility, coupled with Problem-Solving Abilities and Teamwork and Collaboration

Question 22

A network automation team is undertaking a phased migration of a global enterprise\'s infrastructure to a new Software-Defined Networking (SDN) controller. Midway through the project, the team discovers undocumented limitations in the controller\'s API that significantly impede the automation of critical routing policy configurations on a substantial portion of the existing Cisco hardware. Concurrently, the Chief Information Security Officer (CISO) mandates an immediate, accelerated rollout of a new network segmentation policy across all data centers to address a newly identified zero-day vulnerability, a task that was originally scheduled for the final phase of the SDN migration. Given these developments, which behavioral competency best describes the network automation engineer\'s required response to effectively manage this complex and dynamic situation?

Accepted Answer

Adaptability and Flexibility

Question 23

A network operations team is tasked with managing a large, multi-vendor network infrastructure that is increasingly adopting a dynamic, cloud-native approach. Devices are frequently added, removed, and re-purposed, with their roles and IP addresses changing unpredictably. The team currently uses Ansible playbooks, leveraging NETCONF for configuration changes, but they are experiencing a high rate of configuration failures due to outdated device information in their inventory. Which strategic adjustment to their network programmability workflow would best address the challenges posed by this volatile operational environment and foster greater adaptability?

Accepted Answer

Implement an event-driven system for real-time network telemetry analysis that automatically updates the Ansible inventory based on discovered device roles and IP address changes.

Question 24

A network automation team, leveraging Python and `netmiko` for Cisco device configuration, initially deployed a solution for a single branch office that hardcoded device IP addresses and SSH credentials directly within their scripts. As the organization expanded to multiple new locations, requiring more rigorous security protocols and a streamlined operational workflow, the team encountered significant challenges. The hardcoded approach became unmanageable, posing a security risk and hindering rapid deployment. To address this, the team needed to rapidly adopt a new methodology for securely storing and accessing network device credentials without compromising the existing automation framework. Which behavioral competency is most prominently demonstrated by the team\'s proactive shift in strategy to incorporate a secure secrets management solution for their network automation scripts?

Accepted Answer

Adaptability and Flexibility

Question 25

Anya, leading a network programmability team, faces a sudden mandate to integrate a novel network telemetry platform. This platform employs a proprietary authentication handshake and returns data exclusively in a Protobuf format, a significant departure from the team\'s established JSON-centric, OAuth2-authenticated Python framework. The integration is critical for enhanced real-time network state awareness, a key business objective for the upcoming quarter. Anya must guide her team through this transition, ensuring minimal disruption to ongoing operations while meeting the tight deadline. Which behavioral competency, when effectively applied by Anya, would most directly facilitate a successful and efficient integration under these circumstances?

Accepted Answer

Adaptability and Flexibility

Question 26

Consider a network automation scenario where Anya, a network administrator, has developed an Ansible playbook to deploy Quality of Service (QoS) policies across a large enterprise. This playbook is designed to interact with network devices using a specific version of a YANG data model for configuration. A critical security vulnerability is identified, necessitating an immediate network-wide update to firewall rules and a subsequent minor adjustment to the QoS policy to ensure proper traffic prioritization for security patches. This adjustment results in a change to the underlying YANG data model, specifically altering the naming convention and data type of a parameter crucial for traffic classification. Anya\'s existing playbook, hardcoded for the previous YANG model version, is now at risk of failure. Which of the following actions best demonstrates Anya\'s adaptability and flexibility in this situation, aligning with the principles of network programmability in response to evolving requirements and potential ambiguity?

Accepted Answer

Update the Ansible playbook to correctly reference the modified YANG data model parameters for traffic classification.

Question 27

A network automation team is troubleshooting intermittent HTTP 500 errors when using a custom RESTCONF client to update device configurations. The errors occur without detailed error messages in the response body, leading the team to suspect potential race conditions or issues with concurrent configuration commits. Which of the following strategies would most effectively address these intermittent failures by ensuring the atomicity and integrity of configuration changes?

Accepted Answer

Implement client-side transaction management, such as a commit-and-validate pattern, to ensure operations are atomic and can be rolled back if validation fails.

Question 28

A network automation script, developed using Python and `netmiko` to enforce Quality of Service (QoS) policies on Cisco IOS devices, is suddenly failing to correctly identify the applied QoS configurations. This failure stems from an undocumented modification to the output format of the `show policy-map interface ` command on a critical network device, which the script was precisely parsing. The script\'s primary function is to ensure that a specific QoS policy, named \'PRIORITY_TRAFFIC\', is correctly applied to all customer-facing interfaces. How should the automation engineer best adapt the script to maintain its operational integrity and resilience against such unforeseen changes in device command outputs, reflecting a strong capacity for adaptability and problem-solving?

Accepted Answer

Refactor the script to validate the presence of the QoS policy identifier within the command output using pattern matching that tolerates variations in whitespace and line ordering, rather than relying on exact string equality.

Question 29

An advanced networking team is tasked with building a dynamic service provisioning platform leveraging modern API-driven architectures. They are encountering significant operational friction due to the heterogeneous nature of data payloads returned by diverse network hardware vendors. This inconsistency in data structures and formats is causing frequent script failures, unreliable automation outcomes, and a growing distrust in the platform\'s ability to accurately reflect the network state. Consequently, client-facing service level agreements (SLAs) are at risk. Which of the following strategic interventions would most effectively address the root technical cause of this operational friction and bolster the reliability of the automation platform?

Accepted Answer

Implement a comprehensive data validation and transformation layer that enforces standardized schemas and data types before data is consumed by the orchestration engine.

Question 30

A network automation team is deploying a new security policy across numerous Cisco-managed branch offices using a Python-based automation framework orchestrated by Ansible. While the automation successfully configures firewalls in most locations, a specific branch office, identified as \'Branch-Delta-7\', consistently fails to apply the policy, exhibiting intermittent connectivity issues post-deployment attempt. Analysis of the logs reveals no common syntax errors in the automation scripts themselves, but rather a pattern of unexpected state changes on the network devices within Branch-Delta-7 that deviate from the assumed baseline configuration of other branches. What core behavioral competency is most critical for the team to effectively address this situation and ensure successful policy deployment across all branches?

Accepted Answer

Adaptability and Flexibility

Developing with Cisco Network Programmability Free Practice Test — 30 Questions

A lot more is already mapped out

About the Developing with Cisco Network Programmability Certification