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Cisco 350-401 Premium Bundle
Cisco 350-401 Premium Bundle

350-401 Premium File: 763 Questions & Answers

Last Update: Oct 20, 2026

350-401 Training Course: 196 Video Lectures

350-401 PDF Study Guide: 636 Pages

$79.99

350-401 Bundle gives you unlimited access to "350-401" files. However, this does not replace the need for a .vce exam simulator. To download your .vce exam simulator click here

Cisco 350-401 Practice Test 6

Question 50

A large Catalyst SD-WAN deployment requires one interface for templates, device lifecycle and operational dashboards, while traffic still forwards at branch routers. The proposed remedy is: Use Cisco Catalyst SD-WAN Manager as the centralized management-plane system, not as the per-packet data forwarder. Which observation would most directly confirm that remedy works as intended?

  1. Verify a device template push and health telemetry in Manager while branch edges continue forwarding locally.
  2. Inspect controller OMP peer status and accepted route advertisements from representative edge devices.
  3. Verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions.
  4. Capture TLOC/BFD and data-plane tunnel counters between edges while observing no user-data transit at Controller.

Explanation

Correct Answer

A:

The decisive acceptance observation is: Verify a device template push and health telemetry in Manager while branch edges continue forwarding locally. This tests the working mechanism, while the original incident was: a change engineer expects Manager to carry application packets and concludes the WAN is down when its UI is unavailable.

Incorrect Answers

B:

This test measures a different behavior: Inspect controller OMP peer status and accepted route advertisements from representative edge devices. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify a device template push and health telemetry in Manager while branch edges continue forwarding locally.

C:

This test measures a different behavior: Verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify a device template push and health telemetry in Manager while branch edges continue forwarding locally.

D:

This test measures a different behavior: Capture TLOC/BFD and data-plane tunnel counters between edges while observing no user-data transit at Controller. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify a device template push and health telemetry in Manager while branch edges continue forwarding locally.

Question 51

A large Catalyst SD-WAN deployment requires one interface for templates, device lifecycle and operational dashboards, while traffic still forwards at branch routers. During troubleshooting: A change engineer expects Manager to carry application packets and concludes the WAN is down when its UI is unavailable. Which underlying cause best explains the recorded behavior?

  1. A control-plane route existed but no eligible secure edge data-plane transport path was operational.
  2. The edge lacks the expected OMP control-plane routes or policy, not a management dashboard login.
  3. Management-plane availability was confused with distributed edge data-plane forwarding.
  4. Orchestration/validator reachability or device authorization is missing during initial discovery.

Explanation

Correct Answer

C:

The actual technical cause is: Management-plane availability was confused with distributed edge data-plane forwarding. It specifically explains the observation: a change engineer expects Manager to carry application packets and concludes the WAN is down when its UI is unavailable. The correcting configuration is: use Cisco Catalyst SD-WAN Manager as the centralized management-plane system, not as the per-packet data forwarder.

Incorrect Answers

A:

That diagnosis is supported by a different symptom: Application flows stop when an edge has no valid remote TLOC despite an OMP route being present. Here the recorded observation is: a change engineer expects Manager to carry application packets and concludes the WAN is down when its UI is unavailable. The applicable cause is: management-plane availability was confused with distributed edge data-plane forwarding.

B:

That diagnosis is supported by a different symptom: Tunnels may be up but remote VPN prefixes are not distributed to edge routes. Here the recorded observation is: a change engineer expects Manager to carry application packets and concludes the WAN is down when its UI is unavailable. The applicable cause is: management-plane availability was confused with distributed edge data-plane forwarding.

D:

That diagnosis is supported by a different symptom: The edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works. Here the recorded observation is: a change engineer expects Manager to carry application packets and concludes the WAN is down when its UI is unavailable. The applicable cause is: management-plane availability was confused with distributed edge data-plane forwarding.

Question 52

A large Catalyst SD-WAN deployment requires one interface for templates, device lifecycle and operational dashboards, while traffic still forwards at branch routers. Select THREE complementary actions: the technical remedy, a direct verification, and the ongoing safeguard. Evidence from an unrelated mechanism is not a substitute for these three responsibilities.

  1. Test NAT, certificate, and control-connection bootstrap for each new transport/provider.
  2. Separate Manager resiliency testing from edge tunnel and forwarding validation.
  3. Use Cisco Catalyst SD-WAN Manager as the centralized management-plane system, not as the per-packet data forwarder.
  4. Forward encrypted user traffic between authorized SD-WAN edge routers across data-plane tunnels.
  5. Inspect controller OMP peer status and accepted route advertisements from representative edge devices.
  6. Verify a device template push and health telemetry in Manager while branch edges continue forwarding locally.

Explanation

Correct Answers

B:

The continuing protective control is: Separate Manager resiliency testing from edge tunnel and forwarding validation. This addresses the underlying failure mechanism: management-plane availability was confused with distributed edge data-plane forwarding. The corresponding operational check is: verify a device template push and health telemetry in Manager while branch edges continue forwarding locally.

C:

The required correction is: Use Cisco Catalyst SD-WAN Manager as the centralized management-plane system, not as the per-packet data forwarder. The underlying failure mechanism is: Management-plane availability was confused with distributed edge data-plane forwarding. Verify success by carrying out this direct test: verify a device template push and health telemetry in Manager while branch edges continue forwarding locally.

F:

The decisive acceptance observation is: Verify a device template push and health telemetry in Manager while branch edges continue forwarding locally. This tests the working mechanism, while the original incident was: a change engineer expects Manager to carry application packets and concludes the WAN is down when its UI is unavailable.

Incorrect Answers

A:

That control reduces a separate risk: Orchestration/validator reachability or device authorization is missing during initial discovery. For the described design, the recurring risk arises from: management-plane availability was confused with distributed edge data-plane forwarding. The specific required safeguard is: separate Manager resiliency testing from edge tunnel and forwarding validation.

D:

The needed correction is to use Cisco Catalyst SD-WAN Manager as the centralized management-plane system, not as the per-packet data forwarder.

E:

This test measures a different behavior: Inspect controller OMP peer status and accepted route advertisements from representative edge devices. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify a device template push and health telemetry in Manager while branch edges continue forwarding locally.

Question 53

Branch edge devices need centrally distributed OMP routes and overlay policy decisions, not administrator-driven forwarding in the management portal. The incident evidence is: Tunnels may be up but remote VPN prefixes are not distributed to edge routes. Which targeted configuration or design change best addresses the failure?

  1. Provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service.
  2. Forward encrypted user traffic between authorized SD-WAN edge routers across data-plane tunnels.
  3. Use the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers.
  4. Check local VPN route redistribution and OMP advertisement toward the SD-WAN Controller.

Explanation

Correct Answer

C:

The required correction is: Use the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers. The underlying failure mechanism is: The edge lacks the expected OMP control-plane routes or policy, not a management dashboard login. Verify success by carrying out this direct test: inspect controller OMP peer status and accepted route advertisements from representative edge devices.

Incorrect Answers

A:

Providing reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service would not meet the need for the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers.

B:

Forward encrypted user traffic between authorized SD-WAN edge routers across data-plane tunnels would not meet the need for the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers.

D:

Checking local VPN route redistribution and OMP advertisement toward the SD-WAN Controller would not meet the need for the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers.

Question 54

Branch edge devices need centrally distributed OMP routes and overlay policy decisions, not administrator-driven forwarding in the management portal. The proposed remedy is: Use the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers. Which observation would most directly confirm that remedy works as intended?

  1. Verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions.
  2. Inspect controller OMP peer status and accepted route advertisements from representative edge devices.
  3. Verify the prefix in local VPN routing, OMP advertised routes and remote edge accepted routes in that sequence.
  4. Capture TLOC/BFD and data-plane tunnel counters between edges while observing no user-data transit at Controller.

Explanation

Correct Answer

B:

The decisive acceptance observation is: Inspect controller OMP peer status and accepted route advertisements from representative edge devices. This tests the working mechanism, while the original incident was: tunnels may be up but remote VPN prefixes are not distributed to edge routes.

Incorrect Answers

A:

This test measures a different behavior: Verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions. It does not establish the target outcome. For the documented fault, the direct acceptance test is: inspect controller OMP peer status and accepted route advertisements from representative edge devices.

C:

This test measures a different behavior: Verify the prefix in local VPN routing, OMP advertised routes and remote edge accepted routes in that sequence. It does not establish the target outcome. For the documented fault, the direct acceptance test is: inspect controller OMP peer status and accepted route advertisements from representative edge devices.

D:

This test measures a different behavior: Capture TLOC/BFD and data-plane tunnel counters between edges while observing no user-data transit at Controller. It does not establish the target outcome. For the documented fault, the direct acceptance test is: inspect controller OMP peer status and accepted route advertisements from representative edge devices.

Question 55

Branch edge devices need centrally distributed OMP routes and overlay policy decisions, not administrator-driven forwarding in the management portal. During troubleshooting: Tunnels may be up but remote VPN prefixes are not distributed to edge routes. Which underlying cause best explains the recorded behavior?

  1. Orchestration/validator reachability or device authorization is missing during initial discovery.
  2. A control-plane route existed but no eligible secure edge data-plane transport path was operational.
  3. The edge lacks the expected OMP control-plane routes or policy, not a management dashboard login.
  4. The prefix was not injected into OMP or was rejected by control policy.

Explanation

Correct Answer

C:

The actual technical cause is: The edge lacks the expected OMP control-plane routes or policy, not a management dashboard login. It specifically explains the observation: tunnels may be up but remote VPN prefixes are not distributed to edge routes. The correcting configuration is: use the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers.

Incorrect Answers

A:

That diagnosis is supported by a different symptom: The edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works. Here the recorded observation is: tunnels may be up but remote VPN prefixes are not distributed to edge routes. The applicable cause is: the edge lacks the expected OMP control-plane routes or policy, not a management dashboard login.

B:

That diagnosis is supported by a different symptom: Application flows stop when an edge has no valid remote TLOC despite an OMP route being present. Here the recorded observation is: tunnels may be up but remote VPN prefixes are not distributed to edge routes. The applicable cause is: the edge lacks the expected OMP control-plane routes or policy, not a management dashboard login.

D:

That diagnosis is supported by a different symptom: The branch VPN prefix exists in its local RIB yet is absent from remote OMP routes. Here the recorded observation is: tunnels may be up but remote VPN prefixes are not distributed to edge routes. The applicable cause is: the edge lacks the expected OMP control-plane routes or policy, not a management dashboard login.

Question 56

Branch edge devices need centrally distributed OMP routes and overlay policy decisions, not administrator-driven forwarding in the management portal. The initial change is: Use the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers. Which continuing control most directly prevents a recurrence of the documented problem: Tunnels may be up but remote VPN prefixes are not distributed to edge routes.

  1. Monitor OMP adjacency, route filters and controller certificate validity separately.
  2. Verify edge TLOC reachability independently of OMP route presence.
  3. Reconcile OMP advertisements and centralized route policy during new VPN onboarding.
  4. Test NAT, certificate, and control-connection bootstrap for each new transport/provider.

Explanation

Correct Answer

A:

The continuing protective control is: Monitor OMP adjacency, route filters and controller certificate validity separately. This addresses the underlying failure mechanism: the edge lacks the expected OMP control-plane routes or policy, not a management dashboard login. The corresponding operational check is: inspect controller OMP peer status and accepted route advertisements from representative edge devices.

Incorrect Answers

B:

That control reduces a separate risk: A control-plane route existed but no eligible secure edge data-plane transport path was operational. For the described design, the recurring risk arises from: the edge lacks the expected OMP control-plane routes or policy, not a management dashboard login. The specific required safeguard is: monitor OMP adjacency, route filters and controller certificate validity separately.

C:

That control reduces a separate risk: The prefix was not injected into OMP or was rejected by control policy. For the described design, the recurring risk arises from: the edge lacks the expected OMP control-plane routes or policy, not a management dashboard login. The specific required safeguard is: monitor OMP adjacency, route filters and controller certificate validity separately.

D:

That control reduces a separate risk: Orchestration/validator reachability or device authorization is missing during initial discovery. For the described design, the recurring risk arises from: the edge lacks the expected OMP control-plane routes or policy, not a management dashboard login. The specific required safeguard is: monitor OMP adjacency, route filters and controller certificate validity separately.

Question 57

A newly staged SD-WAN edge behind NAT needs authenticated discovery of controllers before it can form full overlay control connections. The incident evidence is: The edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works. Which targeted configuration or design change best addresses the failure?

  1. Map transport interfaces to intended supported SD-WAN colors and select TLOCs in policy.
  2. Forward encrypted user traffic between authorized SD-WAN edge routers across data-plane tunnels.
  3. Provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service.
  4. Use the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers.

Explanation

Correct Answer

C:

The required correction is: Provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service. The underlying failure mechanism is: Orchestration/validator reachability or device authorization is missing during initial discovery. Verify success by carrying out this direct test: verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions.

Incorrect Answers

A:

Mapping transport interfaces to intended supported SD-WAN colors and selecting TLOCs in policy would not provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service.

B:

Forward encrypted user traffic between authorized SD-WAN edge routers across data-plane tunnels would not provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service.

D:

Using the Catalyst SD-WAN Controller as the control-plane peer that distributes routing and policy state to edge routers would not provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service.

Question 58

A newly staged SD-WAN edge behind NAT needs authenticated discovery of controllers before it can form full overlay control connections. The proposed remedy is: Provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service. Which observation would most directly confirm that remedy works as intended?

  1. Inspect controller OMP peer status and accepted route advertisements from representative edge devices.
  2. Capture TLOC/BFD and data-plane tunnel counters between edges while observing no user-data transit at Controller.
  3. Inspect live local/remote TLOC color attributes and confirm the intended transport is selected.
  4. Verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions.

Explanation

Correct Answer

D:

The decisive acceptance observation is: Verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions. This tests the working mechanism, while the original incident was: the edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works.

Incorrect Answers

A:

This test measures a different behavior: Inspect controller OMP peer status and accepted route advertisements from representative edge devices. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions.

B:

This test measures a different behavior: Capture TLOC/BFD and data-plane tunnel counters between edges while observing no user-data transit at Controller. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions.

C:

This test measures a different behavior: Inspect live local/remote TLOC color attributes and confirm the intended transport is selected. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions.

Question 59

A newly staged SD-WAN edge behind NAT needs authenticated discovery of controllers before it can form full overlay control connections. During troubleshooting: The edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works. Which underlying cause best explains the recorded behavior?

  1. A control-plane route existed but no eligible secure edge data-plane transport path was operational.
  2. Orchestration/validator reachability or device authorization is missing during initial discovery.
  3. The edge lacks the expected OMP control-plane routes or policy, not a management dashboard login.
  4. Transport color classification or policy match does not reflect the physical circuit role.

Explanation

Correct Answer

B:

The actual technical cause is: Orchestration/validator reachability or device authorization is missing during initial discovery. It specifically explains the observation: the edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works. The correcting configuration is: provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service.

Incorrect Answers

A:

That diagnosis is supported by a different symptom: Application flows stop when an edge has no valid remote TLOC despite an OMP route being present. Here the recorded observation is: the edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works. The applicable cause is: orchestration/validator reachability or device authorization is missing during initial discovery.

C:

That diagnosis is supported by a different symptom: Tunnels may be up but remote VPN prefixes are not distributed to edge routes. Here the recorded observation is: the edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works. The applicable cause is: orchestration/validator reachability or device authorization is missing during initial discovery.

D:

That diagnosis is supported by a different symptom: An Internet-only traffic policy chooses an MPLS TLOC after a template update. Here the recorded observation is: the edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works. The applicable cause is: orchestration/validator reachability or device authorization is missing during initial discovery.

Question 60

A newly staged SD-WAN edge behind NAT needs authenticated discovery of controllers before it can form full overlay control connections. The initial change is: Provide reachability and valid onboarding information to the Catalyst SD-WAN Validator orchestration service. Which continuing control most directly prevents a recurrence of the documented problem: The edge remains in onboarding and cannot discover controller endpoints even though WAN internet access works.

  1. Verify edge TLOC reachability independently of OMP route presence.
  2. Test NAT, certificate, and control-connection bootstrap for each new transport/provider.
  3. Separate Manager resiliency testing from edge tunnel and forwarding validation.
  4. Monitor OMP adjacency, route filters and controller certificate validity separately.

Explanation

Correct Answer

B:

The continuing protective control is: Test NAT, certificate, and control-connection bootstrap for each new transport/provider. This addresses the underlying failure mechanism: orchestration/validator reachability or device authorization is missing during initial discovery. The corresponding operational check is: verify the edge reaches Validator and discovers permitted Controller and Manager addresses with authenticated sessions.

Incorrect Answers

A:

That control reduces a separate risk: A control-plane route existed but no eligible secure edge data-plane transport path was operational. For the described design, the recurring risk arises from: orchestration/validator reachability or device authorization is missing during initial discovery. The specific required safeguard is: test NAT, certificate, and control-connection bootstrap for each new transport/provider.

C:

That control reduces a separate risk: Management-plane availability was confused with distributed edge data-plane forwarding. For the described design, the recurring risk arises from: orchestration/validator reachability or device authorization is missing during initial discovery. The specific required safeguard is: test NAT, certificate, and control-connection bootstrap for each new transport/provider.

D:

That control reduces a separate risk: The edge lacks the expected OMP control-plane routes or policy, not a management dashboard login. For the described design, the recurring risk arises from: orchestration/validator reachability or device authorization is missing during initial discovery. The specific required safeguard is: test NAT, certificate, and control-connection bootstrap for each new transport/provider.


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