Question 670 A NetFlow collector sees UDP export packets but cannot decode version 9 flow records after a collector restart. Which technical mechanism best explains the behavior observed in this scenario? The flow record determines which packet fields are keys and which additional fields are collected. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. IPFIX defines template-based information elements beyond fixed older NetFlow layouts. ExplanationCorrect Answer B:NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. This explains why the initial condition produces the observed failure. The direct repair is: Ensure export templates are periodically sent or refreshed as appropriate for the collector. Validate through: Inspect template arrival and successfully decoded sampled flow fields after refresh. Other Answers A:The flow record determines which packet fields are keys and which additional fields are collected. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. C:Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. D:IPFIX defines template-based information elements beyond fixed older NetFlow layouts. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates.
Question 671 A NetFlow collector sees UDP export packets but cannot decode version 9 flow records after a collector restart. After applying the correction, which verification evidence most directly demonstrates that this issue is resolved? Inspect exporter statistics and confirm received records at the collector via the intended VRF. Export a known TCP flow and verify the required IP and port attributes are present. Inspect template arrival and successfully decoded sampled flow fields after refresh. Decode a test export containing the requested information elements in the collector. ExplanationCorrect Answer C:Inspect template arrival and successfully decoded sampled flow fields after refresh. This checks the affected traffic or control-plane behavior, not merely a generic up/down indicator. The underlying mechanism is: NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. Other Answers A:Inspect exporter statistics and confirm received records at the collector via the intended VRF. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. B:Export a known TCP flow and verify the required IP and port attributes are present. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. D:Decode a test export containing the requested information elements in the collector. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates.
Question 672 A NetFlow collector sees UDP export packets but cannot decode version 9 flow records after a collector restart. Which lasting design or operational safeguard best prevents this particular issue from recurring? Test collector reachability from the configured exporter source after VRF changes. Maintain versioned flow record schemas aligned to analytic requirements. Agree exporter protocol and schema version with collector owners before cutover. Monitor template delivery and exporter/collector restart resilience. ExplanationCorrect Answer D:Monitor template delivery and exporter/collector restart resilience. This addresses the recurring cause: NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. A targeted acceptance check is: Inspect template arrival and successfully decoded sampled flow fields after refresh. Other Answers A:Test collector reachability from the configured exporter source after VRF changes. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. B:Maintain versioned flow record schemas aligned to analytic requirements. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates. C:Agree exporter protocol and schema version with collector owners before cutover. NetFlow v9 exports are template-based; a collector cannot interpret data records without matching templates.
Question 673 An engineer configures a Flexible NetFlow record with source and destination IPs but omits transport ports needed for application analysis. Which corrective action most directly resolves the documented failure without suppressing unrelated safeguards? Add supported transport port match fields and rebuild the monitor configuration under change control. Fix exporter destination, source interface and VRF routing for the collector path. Ensure export templates are periodically sent or refreshed as appropriate for the collector. Configure the supported IPFIX export format and record fields for the collector's schema. ExplanationCorrect Answer A:Add supported transport port match fields and rebuild the monitor configuration under change control. The flow record determines which packet fields are keys and which additional fields are collected. Export a known TCP flow and verify the required IP and port attributes are present. Other Answers B:Fix exporter destination, source interface and VRF routing for the collector path. The flow record determines which packet fields are keys and which additional fields are collected. C:Ensure export templates are periodically sent or refreshed as appropriate for the collector. The flow record determines which packet fields are keys and which additional fields are collected. D:Configure the supported IPFIX export format and record fields for the collector's schema. The flow record determines which packet fields are keys and which additional fields are collected.
Question 674 An engineer configures a Flexible NetFlow record with source and destination IPs but omits transport ports needed for application analysis. Which technical mechanism best explains the behavior observed in this scenario? Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. The flow record determines which packet fields are keys and which additional fields are collected. IPFIX defines template-based information elements beyond fixed older NetFlow layouts. Flexible NetFlow captures traffic only where a flow monitor is applied and according to its configured direction. ExplanationCorrect Answer B:The flow record determines which packet fields are keys and which additional fields are collected. This explains why the initial condition produces the observed failure. The direct repair is: Add supported transport port match fields and rebuild the monitor configuration under change control. Validate through: Export a known TCP flow and verify the required IP and port attributes are present. Other Answers A:Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. The flow record determines which packet fields are keys and which additional fields are collected. C:IPFIX defines template-based information elements beyond fixed older NetFlow layouts. The flow record determines which packet fields are keys and which additional fields are collected. D:Flexible NetFlow captures traffic only where a flow monitor is applied and according to its configured direction. The flow record determines which packet fields are keys and which additional fields are collected.
Question 675 An engineer configures a Flexible NetFlow record with source and destination IPs but omits transport ports needed for application analysis. After applying the correction, which verification evidence most directly demonstrates that this issue is resolved? Generate distinct inbound/outbound test flows and compare cache/export records with the monitored direction. Inspect template arrival and successfully decoded sampled flow fields after refresh. Export a known TCP flow and verify the required IP and port attributes are present. Inspect exporter statistics and confirm received records at the collector via the intended VRF. ExplanationCorrect Answer C:Export a known TCP flow and verify the required IP and port attributes are present. This checks the affected traffic or control-plane behavior, not merely a generic up/down indicator. The underlying mechanism is: The flow record determines which packet fields are keys and which additional fields are collected. Other Answers A:Generate distinct inbound/outbound test flows and compare cache/export records with the monitored direction. The flow record determines which packet fields are keys and which additional fields are collected. B:Inspect template arrival and successfully decoded sampled flow fields after refresh. The flow record determines which packet fields are keys and which additional fields are collected. D:Inspect exporter statistics and confirm received records at the collector via the intended VRF. The flow record determines which packet fields are keys and which additional fields are collected.
Question 676 An engineer configures a Flexible NetFlow record with source and destination IPs but omits transport ports needed for application analysis. Which lasting design or operational safeguard best prevents this particular issue from recurring? Monitor template delivery and exporter/collector restart resilience. Test collector reachability from the configured exporter source after VRF changes. Document traffic observation points and directions in flow-monitoring designs. Maintain versioned flow record schemas aligned to analytic requirements. ExplanationCorrect Answer D:Maintain versioned flow record schemas aligned to analytic requirements. This addresses the recurring cause: The flow record determines which packet fields are keys and which additional fields are collected. A targeted acceptance check is: Export a known TCP flow and verify the required IP and port attributes are present. Other Answers A:Monitor template delivery and exporter/collector restart resilience. The flow record determines which packet fields are keys and which additional fields are collected. B:Test collector reachability from the configured exporter source after VRF changes. The flow record determines which packet fields are keys and which additional fields are collected. C:Document traffic observation points and directions in flow-monitoring designs. The flow record determines which packet fields are keys and which additional fields are collected.
Question 677 NetFlow records are generated in the router cache but never reach the collector after a management VRF cutover. Which corrective action most directly resolves the documented failure without suppressing unrelated safeguards? Fix exporter destination, source interface and VRF routing for the collector path. Configure the supported IPFIX export format and record fields for the collector's schema. Add supported transport port match fields and rebuild the monitor configuration under change control. Configure the platform-supported DHCPv6 relay destination and applicable interface behavior. ExplanationCorrect Answer A:Fix exporter destination, source interface and VRF routing for the collector path. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. Inspect exporter statistics and confirm received records at the collector via the intended VRF. Other Answers B:Configure the supported IPFIX export format and record fields for the collector's schema. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. C:Add supported transport port match fields and rebuild the monitor configuration under change control. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. D:Configure the platform-supported DHCPv6 relay destination and applicable interface behavior. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation.
Question 678 NetFlow records are generated in the router cache but never reach the collector after a management VRF cutover. Which technical mechanism best explains the behavior observed in this scenario? The flow record determines which packet fields are keys and which additional fields are collected. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. Flexible NetFlow captures traffic only where a flow monitor is applied and according to its configured direction. IP SLA measures configured end-to-end reachability and tracking can withdraw a route despite a locally up interface. ExplanationCorrect Answer B:Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. This explains why the initial condition produces the observed failure. The direct repair is: Fix exporter destination, source interface and VRF routing for the collector path. Validate through: Inspect exporter statistics and confirm received records at the collector via the intended VRF. Other Answers A:The flow record determines which packet fields are keys and which additional fields are collected. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. C:Flexible NetFlow captures traffic only where a flow monitor is applied and according to its configured direction. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. D:IP SLA measures configured end-to-end reachability and tracking can withdraw a route despite a locally up interface. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation.
Question 679 NetFlow records are generated in the router cache but never reach the collector after a management VRF cutover. After applying the correction, which verification evidence most directly demonstrates that this issue is resolved? Decode a test export containing the requested information elements in the collector. Export a known TCP flow and verify the required IP and port attributes are present. Inspect exporter statistics and confirm received records at the collector via the intended VRF. Generate distinct inbound/outbound test flows and compare cache/export records with the monitored direction. ExplanationCorrect Answer C:Inspect exporter statistics and confirm received records at the collector via the intended VRF. This checks the affected traffic or control-plane behavior, not merely a generic up/down indicator. The underlying mechanism is: Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. Other Answers A:Decode a test export containing the requested information elements in the collector. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. B:Export a known TCP flow and verify the required IP and port attributes are present. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. D:Generate distinct inbound/outbound test flows and compare cache/export records with the monitored direction. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation.
Question 680 NetFlow records are generated in the router cache but never reach the collector after a management VRF cutover. Which lasting design or operational safeguard best prevents this particular issue from recurring? Agree exporter protocol and schema version with collector owners before cutover. Maintain versioned flow record schemas aligned to analytic requirements. Document traffic observation points and directions in flow-monitoring designs. Test collector reachability from the configured exporter source after VRF changes. ExplanationCorrect Answer D:Test collector reachability from the configured exporter source after VRF changes. This addresses the recurring cause: Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. A targeted acceptance check is: Inspect exporter statistics and confirm received records at the collector via the intended VRF. Other Answers A:Agree exporter protocol and schema version with collector owners before cutover. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. B:Maintain versioned flow record schemas aligned to analytic requirements. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation. C:Document traffic observation points and directions in flow-monitoring designs. Flow record capture and export transport are separate; an unreachable collector does not prevent local cache creation.
