2.4 Automation/orchestration Design, Integration, and On-Going Support for Networks (such as Interfacing with APIs, Model-Driven Management, Controller-Based Technologies, and Evolution to CI/CD Framework) 400-007 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A network team is implementing model-driven management to standardize configuration across a fleet of routers. They want to ensure that all devices have the same baseline configuration and that any drift is automatically detected and corrected. Which approach should they use?

   • ADeploy a script that backs up the configuration of each router to a central server, but does not make any changes.
   • BUse SNMP to poll the running configuration of each router and compare it to a baseline in a spreadsheet.
   • CManually review the configuration of each router on a quarterly basis and make changes as needed.
   • DUse a configuration management tool (e.g., Ansible) with YAML templates that define the desired state, and run it periodically to enforce compliance.
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2. 12foundation · easy

   Which protocol is designed to use YANG data models and provides a RESTful API over HTTP/HTTPS for network management?

   • ARESTCONF
   • BgRPC
   • CSNMP
   • DNETCONF
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4. 13foundation · easy

   What is the main goal of continuous integration (CI) in a network automation context?

   • ATo replace manual configuration with CLI commands
   • BTo monitor network traffic in real time
   • CTo deploy changes to production automatically
   • DTo automatically test network changes before deployment
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5. 14application · medium

   A service provider is building an automation platform to manage a multi-vendor network (Cisco, Juniper, Arista). The design team must choose a single programmatic interface that provides consistent, structured data models across all vendors, supports transactional configuration changes, and can stream telemetry. Which approach best meets these requirements?

   • ADeploy NETCONF with YANG models across all devices, using a controller to orchestrate transactions and subscribe to telemetry streams.
   • BImplement SNMPv3 for configuration and rely on syslog for telemetry, as it is universally supported by all network vendors.
   • CUse vendor-specific RESTful APIs and build a middleware abstraction layer to normalize data and configuration calls.
   • DUse CLI scripting with expect-style automation to handle each vendor's command syntax directly.
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6. 15expert · hard

   A network engineering team is transitioning to a CI/CD pipeline for configuration management. They have a large number of legacy devices that do not support NETCONF or YANG. The team wants to include these devices in the pipeline without rewriting all automation from scratch. Which strategy is most appropriate?

   • AReplace all legacy devices with modern ones that support NETCONF/YANG before implementing the CI/CD pipeline.
   • BExclude legacy devices from the CI/CD pipeline and manage them manually, as they cannot be automated.
   • CUse a separate, non-CI/CD script for legacy devices and only use the pipeline for modern devices.
   • DUse a translation layer or adapter that converts the CI/CD pipeline's desired state into CLI commands for legacy devices, while using NETCONF/YANG for modern devices.
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