Automation (10%)

ENSLD · 30 questions

• A 500-person manufacturer is moving email to a hosted suite, building custom logistics code on a hosted platform, and keeping legacy ERP on virtual machines it manages in a public cloud. Leadership wants clear ownership for patching, scaling, and WAN capacity planning. Which cloud responsibility mapping guides network design for these three workloads?
• A network designer reviews a YANG module that shows a container interfaces with a list interface, leaf name as key, and leaf enabled as boolean. The team must automate multi-vendor campus switches without vendor extensions. Which interpretation of this YANG-based data model guides the correct tooling choice?
• A logistics company monitors 800 distribution-center switches for interface errors and buffer drops that spike for seconds during sortation peaks. SNMP polling every five minutes misses events and creates CPU spikes on collectors. Which model-driven telemetry publication choice should the designer recommend to reduce load impact while catching events?
• A network team automates Cisco IOS XE switches and must choose a management interface that uses standard HTTP operations on a hierarchical data model with JSON encoding. They need to retrieve and modify specific configuration resources by URL path. Which RESTCONF characteristic justifies selecting RESTCONF for this use case?
• A manufacturer runs data centers with MPLS VPN and needs predictable performance to cloud workloads for ERP, plus rapid turn-up of new regions without new circuits. Architects must compare dedicated and virtual connectivity models. Which cloud connectivity option using direct and on-ramp constructs best addresses both needs?
• A bank automates Cisco campus switches plus third-party routers with NETCONF, needing common interface models where possible but also full access to Cisco-only platform knobs. The team debates which YANG sources to consume for portable versus platform-specific automation. Which differentiation of YANG models should the architect apply to guide model selection?
• A manufacturer uses Cisco SD-WAN to connect factories and now needs predictable performance to workloads in two public cloud regions with rapid VPC expansion and centralized policy. Internet VPN to cloud gateways is operationally heavy and inconsistent. Which cloud connectivity design integrates WAN with public cloud regions for scalable automated attachment?
• A network automation engineer opens a YANG model for interface configuration and sees a container interfaces, a list interface keyed by name, and leaves for description, enabled, and mtu. The team uses Cisco, Juniper, and Arista devices. Which interpretation of the YANG-based data model best guides correct vendor-neutral automation design?
• A service provider automation team must push consistent MPLS configs with error checking, validate changes before committing, and operate over a secure session using structured remote calls instead of web URLs. Which NETCONF characteristic supports this transactional automation requirement?
• A data-center operations team polls 800 switches with SNMP every five minutes but misses microbursts and high CPU during polling gaps. They need continuous streaming of interface counters, sub-minute visibility, and push-based delivery to multiple tools. Which telemetry approach delivers streaming visibility beyond periodic SNMP polling?
• A financial firm must keep trading databases on premises for compliance, use public cloud for elastic web front ends, share identity between sites, and manage both environments under unified policy. Which cloud-based service model description guides the private, public and hybrid deployment choice?
• A tooling team needs both one-time retrieval of switch inventory over HTTPS and long-lived configuration change subscriptions with transactional rollback on failure. Which protocol selection matches programmatic management requirements for these distinct use cases?
• A service provider automation team needs sub-second streaming telemetry plus programmatic configuration on IOS XE with strongly typed data models and efficient binary transport. They are comparing SNMP polling, REST APIs, and model-driven telemetry. Which description correctly captures gRPC and gNMI roles and benefits for this telemetry and configuration need?
• A 400-site retailer uses model-driven telemetry to a central collector over limited WAN links. Engineers need interface counters every five minutes but want immediate notice of link flaps without flooding the WAN. Which periodic versus on-change telemetry publication design best controls network load impact?
• An enterprise automation team must choose YANG models to push BGP config across Cisco IOS XE plus third-party devices, collect interface counters vendor-neutrally, and access Cisco-specific hardware telemetry. Which IETF, OpenConfig, and Cisco native YANG model mix best addresses this multivendor automation need?
• A hospital will keep patient-record VMs on its own hypervisors, build care-coordination apps on a managed database and app platform, and adopt cloud email with no server patching. Which SaaS, PaaS and IaaS responsibility mapping best informs the network design?
• A campus automation team must choose a management protocol to push VLAN changes with transactional safety, validate configs before commit, and distinguish running versus candidate views on switches. The team asks how NETCONF differs operationally from ad-hoc REST calls. Which NETCONF characteristic should the designer cite to justify transactional configuration management?
• A NetOps engineer must automate VLAN changes on IOS XE using a model-driven API over HTTPS, retrieving configs as structured resources and applying partial updates without replacing whole files. The script should use standard verbs against predictable URIs. Which RESTCONF characteristic with HTTP methods and resource model should the engineer apply?
• A campus automation team must pull interface counters and push VLAN changes on IOS-XE switches using programmable interfaces. Scripts already use HTTPS with JSON payloads, and the team wants resource-oriented URIs with standard GET, PUT, PATCH, POST and DELETE operations against a YANG-defined datastore. Which RESTCONF characteristic design best matches the HTTPS and resource-model requirement?
• A manufacturing company runs factories with MPLS VPN and internet, plus growing IaaS workloads that need predictable performance for replication and burst internet offload for dev teams. Security wants private paths for production and flexible paths for dev. Which cloud connectivity option aligns Direct Connect, MPLS direct connect and cloud on-ramp to these needs?
• A bank must keep trading systems in its own data centers for compliance, run its public website on shared provider capacity for elasticity, and burst analytics into both during quarter-end. Leadership asks for the cloud model labels. Which private, public, and hybrid description best fits this deployment requirement?
• A NetOps team reads a YANG module advertising interface config with containers, lists, leafs, and a namespace showing a vendor-specific path for a new Cisco feature. They must automate consistently across Cisco and Juniper. Which YANG-based data model interpretation should guide their design choice?
• A network team automates weekly VLAN audits with ad-hoc queries from scripts, plus a real-time interface monitor that must receive pushed change notifications with transactional rollback on failure. Which NETCONF or RESTCONF selection fits the audit and streaming telemetry use case?
• A cloud provider with 800 routers needs second-level interface counters and BGP state streaming without overloading managers during peak congestion events. Which telemetry design leverages model-driven telemetry subscriptions and collectors versus SNMP polling for this provider?
• A large retailer uses Cisco and non-Cisco switches and routers and wants model-driven automation for VLANs and interfaces plus Cisco-specific telemetry and QoS features. Engineers debate IETF, OpenConfig, and Cisco native YANG models for NETCONF and gNMI playbooks. Which YANG model strategy best supports interoperable automation while preserving Cisco-specific features?
• A large enterprise polls 2,000 interfaces every 30 seconds via SNMP and now sees CPU spikes and delayed alarms for link flaps and BGP changes. The team wants timely event detection with lower steady-state load. Which model-driven telemetry publication choice addresses the network load impact?
• An enterprise automation team must push complex multi-device VLAN and OSPF changes nightly with validation, rollback on error, and locking to prevent concurrent edits across a 500-switch campus. A lightweight dashboard also needs simple read-write calls. Which NETCONF versus RESTCONF selection best fits the nightly transactional use case?
• A NetOps team must automate consistent VLAN and interface changes on IOS XE with transactional rollback, clear separation of candidate and running state, and structured RPC operations over a secure channel. REST calls feel stateless and lack datastore concepts. Which NETCONF characteristic meets these controller requirements?
• A retailer connects data centers and 80 branches to workloads in two public cloud regions with steady ERP traffic plus bursty analytics and strict segmentation. Which WAN integration with public cloud regions meets performance and isolation needs?
• A DevOps team polls 400 routers with CLI scraping and SNMP every five minutes, causing high CPU, delayed alarms, and fragile scripts when output changes. They need real-time streaming and vendor-neutral configuration. Which gRPC and gNMI approach best modernizes telemetry and configuration for this estate?