Network Assurance

ENCOR · 30 questions

• The city NOC must troubleshoot courts connectivity without flooding the console with debugs from every subnet. Why choose a conditional debug?
• Transit fare-server traffic stalls somewhere along the path. Which diagnostic best shows where packets stop hop-by-hop toward that server?
• Library patrons can ping a catalog server, but the application still fails. Which next diagnostic direction is most appropriate among common ENCOR assurance tools?
• During an outage review, police engineers find no local record of a critical link-down. Which assurance practice would best have preserved that event for later diagnosis?
• Airport operations notice interface errors only after a complaint, because polling gaps hid the trend. What role does SNMP play in that diagnosis story?
• A water-plant engineer enables a targeted debug to catch a flapping adjacency, then finishes the capture. What safe-practice step is essential in production?
• On game day the stadium NOC needs top talkers and conversation visibility across uplinks. Which technology best supplies that Flexible NetFlow-style traffic visibility?
• Courts networking wants customizable 5-tuple visibility rather than a legacy fixed NetFlow record format. What distinguishes Flexible NetFlow for that goal?
• City hall enabled Flexible NetFlow, but the collector shows no new flows. Which verification focus is most relevant?
• A school district wants proof that guest Wi-Fi conversations are not reaching finance subnets. How does Flexible NetFlow help validate that policy intent?
• A port authority enables Flexible NetFlow on edge routers and wants to confirm the exporter and cache are actually working before trusting the dashboards. Which verification approach best matches that goal?
• Police HQ needs a packet analyzer to see traffic from one switch access port that serves an evidence-intake workstation, and both the source port and the analyzer attach to the same switch. Which capture method fits that requirement?
• A county wants to mirror traffic from closet access switches to a central analyzer in the data center closet, keeping the mirrored frames inside a Layer-2 campus fabric. Which SPAN-family approach is designed for that remote Layer-2 capture?
• An airport places its packet analyzer on a different IP subnet across the routed core and needs mirrored frames delivered to that analyzer. Which technology is intended for that Layer-3 path?
• A library SPAN session mirrors a busy uplink onto a 1-Gbps analyzer port and staff notice drops and incomplete captures during peaks. What operational constraint best explains that behavior?
• A 911 PSAP analyzer sits beyond a Layer-3 core, and operators reject creating an RSPAN VLAN end-to-end across that routed boundary. Which choice correctly justifies ERSPAN instead?
• A city NOC wants ongoing reachability checks from core routers to clinic edge routers over the municipal WAN without relying only on manual pings. Which IP SLA operation best matches that connectivity-monitoring goal?
• Transit voice engineers need an IP SLA test that estimates delay variation along the path used for radio-dispatch VoIP, not only basic ICMP reachability. Which operation type targets that quality metric?
• Courts want a tracked object so that when an IP SLA reachability probe to the primary WAN next hop fails, HSRP or static routing can react and shift traffic. What role does that tracking relationship provide?
• A hospital campus runs UDP jitter IP SLA tests from a core router toward clinic gateways. For accurate two-way measurements that need a far-end participant, which role relationship is required?
• Parks and Recreation runs IP SLA probes over a small LTE backup link and sets an extremely aggressive frequency. Staff then see the backup link congested by the probes themselves. What is the sound operational takeaway?
• A city wants Cisco DNA Center (Catalyst Center family) to push consistent access-switch port templates to closet devices instead of hand-editing each switch. Which workflow family addresses that goal?
• County courts Wi-Fi users report intermittent issues, and operators open Cisco DNA Center assurance views to inspect client health and related network symptoms. Which workflow purpose does that illustrate?
• Airport network staff use Cisco DNA Center to maintain device inventory and manage software images across campus switches. Which workflow category best describes those tasks?
• A library team sees marketing materials that rename Cisco DNA Center to Catalyst Center and worries their ENCOR workflow skills no longer apply. What is the accurate continuity takeaway for assurance workflows?
• A school district uses controller workflows both to apply campus access policy consistently and to investigate client path problems with assurance tools such as path-oriented visibility. What does that combined use demonstrate?
• City automation engineers want a model-driven way to set interface descriptions on IOS XE edge routers using YANG-based RPC operations over a secure management channel. Which protocol is the primary fit?
• Courts developers prefer creating VLANs on campus switches through an HTTP-style API that uses YANG data models rather than NETCONF XML RPCs. Which interface matches that preference?
• Transit architects compare management transports for model-driven automation on IOS XE. Which contrast correctly distinguishes NETCONF from RESTCONF at a conceptual level?
• A water utility validates that RESTCONF is working by retrieving a modeled interface resource and inspecting the returned data encoding. Which outcome best confirms successful RESTCONF resource retrieval?