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Cisco 300-420 Bundle

Exam Code: 300-420

Exam Name Designing Cisco Enterprise Networks (ENSLD)

Certification Provider: Cisco

Corresponding Certification: CCNP Enterprise

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Designing Cisco Enterprise Networks (ENSLD) (300-420) Practice Tests

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Cisco 300-420 Practice Test 89

Question 880

Operations wants to avoid recurrence of this design flaw: Several SaaS applications suffer high latency when all remote-site traffic hairpins through headquarters. Which preventive design control MOST DIRECTLY addresses this specific risk?

  1. Audit route leaks and cloud egress paths before onboarding new sites.
  2. Plan redundant circuits and validate provider handoff and BGP failover behavior.
  3. Monitor service destinations, split-tunnel permissions and cloud on-ramp SLAs.
  4. Validate endpoint protocol and supported capabilities in integration tests.

Explanation

Correct Answer

C:

Monitor service destinations, split-tunnel permissions and cloud on-ramp SLAs. This control targets the underlying design risk. Cloud on-ramp designs can reduce unnecessary backhaul but must preserve security inspection and policy controls. The follow-up acceptance check remains: Selected SaaS traffic uses the intended nearer cloud entry point with measured improved latency.

Incorrect Answers

A:

MPLS or provider WAN integration can extend private routed connectivity toward cloud attachments where the carrier supports it. The repeat risk here is different: Cloud on-ramp designs can reduce unnecessary backhaul but must preserve security inspection and policy controls. A directly relevant preventive control is: Monitor service destinations, split-tunnel permissions and cloud on-ramp SLAs.

B:

Dedicated cloud connectivity can provide a managed private network path, but still requires peering and physical redundancy design. The repeat risk here is different: Cloud on-ramp designs can reduce unnecessary backhaul but must preserve security inspection and policy controls. A directly relevant preventive control is: Monitor service destinations, split-tunnel permissions and cloud on-ramp SLAs.

D:

NETCONF and RESTCONF may access YANG-modeled data but use different transport and operation encodings. The repeat risk here is different: Cloud on-ramp designs can reduce unnecessary backhaul but must preserve security inspection and policy controls. A directly relevant preventive control is: Monitor service destinations, split-tunnel permissions and cloud on-ramp SLAs.

Question 881

A Cisco enterprise designer reviews the following scenario: A cloud direct connection is installed, but a design team assumes that the private circuit alone encrypts all workload payloads. Which action MOST DIRECTLY meets the stated design requirement?

  1. Add application or tunnel encryption whenever policy requires confidentiality across the private connection.
  2. Evaluate provider WAN-to-cloud integration with deliberate routing, segmentation and capacity controls.
  3. Evaluate a controlled cloud on-ramp or local Internet breakout for supported SaaS flows.
  4. Use an Infrastructure-as-a-Service model with documented customer OS responsibilities.

Explanation

Correct Answer

A:

Add application or tunnel encryption whenever policy requires confidentiality across the private connection. This action addresses the stated design problem. A private connectivity circuit provides path separation but is not automatically end-to-end encryption. A practical confirmation is: Sensitive cloud flows are encrypted end-to-end and routing still uses the intended private circuit.

Incorrect Answers

B:

MPLS or provider WAN integration can extend private routed connectivity toward cloud attachments where the carrier supports it. The actual fault is governed by a different mechanism: a private connectivity circuit provides path separation but is not automatically end-to-end encryption. The needed response is: Add application or tunnel encryption whenever policy requires confidentiality across the private connection.

C:

Cloud on-ramp designs can reduce unnecessary backhaul but must preserve security inspection and policy controls. The actual fault is governed by a different mechanism: a private connectivity circuit provides path separation but is not automatically end-to-end encryption. The needed response is: Add application or tunnel encryption whenever policy requires confidentiality across the private connection.

D:

IaaS provides compute, storage and network building blocks while the customer typically manages the guest OS and workloads. The actual fault is governed by a different mechanism: a private connectivity circuit provides path separation but is not automatically end-to-end encryption. The needed response is: Add application or tunnel encryption whenever policy requires confidentiality across the private connection.

Question 882

The network architecture board discusses the following: A cloud direct connection is installed, but a design team assumes that the private circuit alone encrypts all workload payloads. Which technical principle BEST explains the design decision?

  1. Cloud on-ramp designs can reduce unnecessary backhaul but must preserve security inspection and policy controls.
  2. A private connectivity circuit provides path separation but is not automatically end-to-end encryption.
  3. MPLS or provider WAN integration can extend private routed connectivity toward cloud attachments where the carrier supports it.
  4. gNMI Subscribe supports modeled telemetry streaming rather than repeated manual Get operations.

Explanation

Correct Answer

B:

A private connectivity circuit provides path separation but is not automatically end-to-end encryption. The correct engineering response is: Add application or tunnel encryption whenever policy requires confidentiality across the private connection. The observable check is: Sensitive cloud flows are encrypted end-to-end and routing still uses the intended private circuit.

Incorrect Answers

A:

A private connectivity circuit provides path separation but is not automatically end-to-end encryption. The offered choice instead concerns a different principle: Cloud on-ramp designs can reduce unnecessary backhaul but must preserve security inspection and policy controls. Those technical conditions are not interchangeable.

C:

A private connectivity circuit provides path separation but is not automatically end-to-end encryption. The offered choice instead concerns a different principle: MPLS or provider WAN integration can extend private routed connectivity toward cloud attachments where the carrier supports it. Those technical conditions are not interchangeable.

D:

A private connectivity circuit provides path separation but is not automatically end-to-end encryption. The offered choice instead concerns a different principle: gNMI Subscribe supports modeled telemetry streaming rather than repeated manual Get operations. Those technical conditions are not interchangeable.

Question 883

The infrastructure team must validate this situation: A cloud direct connection is installed, but a design team assumes that the private circuit alone encrypts all workload payloads. Which acceptance observation BEST establishes the intended result?

  1. Cloud service prefixes route through the contracted private connection and remain reachable after one access failure.
  2. Authorized branch prefixes reach cloud workloads through the approved hub or provider attachment.
  3. Sensitive cloud flows are encrypted end-to-end and routing still uses the intended private circuit.
  4. Only authorized data crosses the hybrid boundary and monitoring shows expected routes and policy enforcement.

Explanation

Correct Answer

C:

Sensitive cloud flows are encrypted end-to-end and routing still uses the intended private circuit. A private connectivity circuit provides path separation but is not automatically end-to-end encryption.

Incorrect Answers

A:

Dedicated cloud connectivity can provide a managed private network path, but still requires peering and physical redundancy design. In the case being tested, a private connectivity circuit provides path separation but is not automatically end-to-end encryption. The necessary acceptance evidence is: Sensitive cloud flows are encrypted end-to-end and routing still uses the intended private circuit.

B:

MPLS or provider WAN integration can extend private routed connectivity toward cloud attachments where the carrier supports it. In the case being tested, a private connectivity circuit provides path separation but is not automatically end-to-end encryption. The necessary acceptance evidence is: Sensitive cloud flows are encrypted end-to-end and routing still uses the intended private circuit.

D:

Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities. In the case being tested, a private connectivity circuit provides path separation but is not automatically end-to-end encryption. The necessary acceptance evidence is: Sensitive cloud flows are encrypted end-to-end and routing still uses the intended private circuit.

Question 884

A post-incident design review discusses the following: A cloud direct connection is installed, but a design team assumes that the private circuit alone encrypts all workload payloads. Which preventive design control MOST DIRECTLY addresses this specific risk?

  1. Audit route leaks and cloud egress paths before onboarding new sites.
  2. Monitor service destinations, split-tunnel permissions and cloud on-ramp SLAs.
  3. Review portability, runtime version support and application security ownership.
  4. Separate confidentiality requirements from private-connectivity procurement checklists.

Explanation

Correct Answer

D:

Separate confidentiality requirements from private-connectivity procurement checklists. This control targets the underlying design risk. A private connectivity circuit provides path separation but is not automatically end-to-end encryption. The follow-up acceptance check remains: Sensitive cloud flows are encrypted end-to-end and routing still uses the intended private circuit.

Incorrect Answers

A:

MPLS or provider WAN integration can extend private routed connectivity toward cloud attachments where the carrier supports it. The repeat risk here is different: a private connectivity circuit provides path separation but is not automatically end-to-end encryption. A directly relevant preventive control is: Separate confidentiality requirements from private-connectivity procurement checklists.

B:

Cloud on-ramp designs can reduce unnecessary backhaul but must preserve security inspection and policy controls. The repeat risk here is different: a private connectivity circuit provides path separation but is not automatically end-to-end encryption. A directly relevant preventive control is: Separate confidentiality requirements from private-connectivity procurement checklists.

C:

PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The repeat risk here is different: a private connectivity circuit provides path separation but is not automatically end-to-end encryption. A directly relevant preventive control is: Separate confidentiality requirements from private-connectivity procurement checklists.

Question 885

During a network design workshop, the team finds this issue: A business wants hosted email and collaboration without managing application servers or their operating systems. Which action MOST DIRECTLY meets the stated design requirement?

  1. Design explicit hybrid-cloud connectivity and data-governance boundaries between private and public environments.
  2. Choose an appropriate Software-as-a-Service offering.
  3. Use a suitable Platform-as-a-Service environment aligned with the application stack.
  4. Use an Infrastructure-as-a-Service model with documented customer OS responsibilities.

Explanation

Correct Answer

B:

Choose an appropriate Software-as-a-Service offering. This action addresses the stated design problem. SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. A practical confirmation is: Users access the supported application without the enterprise managing its underlying server OS.

Incorrect Answers

A:

Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities. The actual fault is governed by a different mechanism: SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The needed response is: Choose an appropriate Software-as-a-Service offering.

C:

PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The actual fault is governed by a different mechanism: SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The needed response is: Choose an appropriate Software-as-a-Service offering.

D:

IaaS provides compute, storage and network building blocks while the customer typically manages the guest OS and workloads. The actual fault is governed by a different mechanism: SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The needed response is: Choose an appropriate Software-as-a-Service offering.

Question 886

In a technical design review: A business wants hosted email and collaboration without managing application servers or their operating systems. Which technical principle BEST explains the design decision?

  1. PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data.
  2. IaaS provides compute, storage and network building blocks while the customer typically manages the guest OS and workloads.
  3. SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks.
  4. Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities.

Explanation

Correct Answer

C:

SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The correct engineering response is: Choose an appropriate Software-as-a-Service offering. The observable check is: Users access the supported application without the enterprise managing its underlying server OS.

Incorrect Answers

A:

SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The offered choice instead concerns a different principle: PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. Those technical conditions are not interchangeable.

B:

SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The offered choice instead concerns a different principle: IaaS provides compute, storage and network building blocks while the customer typically manages the guest OS and workloads. Those technical conditions are not interchangeable.

D:

SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The offered choice instead concerns a different principle: Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities. Those technical conditions are not interchangeable.

Question 887

An engineering reviewer needs objective proof for the following: A business wants hosted email and collaboration without managing application servers or their operating systems. Which acceptance observation BEST establishes the intended result?

  1. Only authorized data crosses the hybrid boundary and monitoring shows expected routes and policy enforcement.
  2. The application deploys through the platform and the provider manages underlying runtime host infrastructure.
  3. Researchers provision VMs and control the guest image and installed software as required.
  4. Users access the supported application without the enterprise managing its underlying server OS.

Explanation

Correct Answer

D:

Users access the supported application without the enterprise managing its underlying server OS. SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks.

Incorrect Answers

A:

Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities. In the case being tested, SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The necessary acceptance evidence is: Users access the supported application without the enterprise managing its underlying server OS.

B:

PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. In the case being tested, SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The necessary acceptance evidence is: Users access the supported application without the enterprise managing its underlying server OS.

C:

IaaS provides compute, storage and network building blocks while the customer typically manages the guest OS and workloads. In the case being tested, SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The necessary acceptance evidence is: Users access the supported application without the enterprise managing its underlying server OS.

Question 888

The change advisory board sees a repeat risk in this case: A business wants hosted email and collaboration without managing application servers or their operating systems. Which preventive design control MOST DIRECTLY addresses this specific risk?

  1. Document SaaS identity, data handling and provider recovery responsibilities.
  2. Maintain data-classification, routing and identity controls for hybrid interconnection.
  3. Review portability, runtime version support and application security ownership.
  4. Track guest patching, access controls and backup ownership for each IaaS workload.

Explanation

Correct Answer

A:

Document SaaS identity, data handling and provider recovery responsibilities. This control targets the underlying design risk. SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. The follow-up acceptance check remains: Users access the supported application without the enterprise managing its underlying server OS.

Incorrect Answers

B:

Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities. The repeat risk here is different: SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. A directly relevant preventive control is: Document SaaS identity, data handling and provider recovery responsibilities.

C:

PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The repeat risk here is different: SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. A directly relevant preventive control is: Document SaaS identity, data handling and provider recovery responsibilities.

D:

IaaS provides compute, storage and network building blocks while the customer typically manages the guest OS and workloads. The repeat risk here is different: SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. A directly relevant preventive control is: Document SaaS identity, data handling and provider recovery responsibilities.

Question 889

A design team must resolve this enterprise network problem: Application developers need managed runtimes and deployment tooling while avoiding VM operating-system administration. Which action MOST DIRECTLY meets the stated design requirement?

  1. Use an Infrastructure-as-a-Service model with documented customer OS responsibilities.
  2. Design explicit hybrid-cloud connectivity and data-governance boundaries between private and public environments.
  3. Use a suitable Platform-as-a-Service environment aligned with the application stack.
  4. Use the appropriate Cisco-native YANG model where supported and isolate the vendor-specific mapping.

Explanation

Correct Answer

C:

Use a suitable Platform-as-a-Service environment aligned with the application stack. This action addresses the stated design problem. PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. A practical confirmation is: The application deploys through the platform and the provider manages underlying runtime host infrastructure.

Incorrect Answers

A:

IaaS provides compute, storage and network building blocks while the customer typically manages the guest OS and workloads. The actual fault is governed by a different mechanism: PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The needed response is: Use a suitable Platform-as-a-Service environment aligned with the application stack.

B:

Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities. The actual fault is governed by a different mechanism: PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The needed response is: Use a suitable Platform-as-a-Service environment aligned with the application stack.

D:

Native models expose device-specific data that may not map exactly to a standards-based OpenConfig schema. The actual fault is governed by a different mechanism: PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The needed response is: Use a suitable Platform-as-a-Service environment aligned with the application stack.

Question 890

The design record describes this issue: Application developers need managed runtimes and deployment tooling while avoiding VM operating-system administration. Which technical principle BEST explains the design decision?

  1. Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities.
  2. SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks.
  3. NETCONF and RESTCONF may access YANG-modeled data but use different transport and operation encodings.
  4. PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data.

Explanation

Correct Answer

D:

PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The correct engineering response is: Use a suitable Platform-as-a-Service environment aligned with the application stack. The observable check is: The application deploys through the platform and the provider manages underlying runtime host infrastructure.

Incorrect Answers

A:

PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The offered choice instead concerns a different principle: Hybrid cloud connects distinct private and public operating environments while retaining different control and residency responsibilities. Those technical conditions are not interchangeable.

B:

PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The offered choice instead concerns a different principle: SaaS normally delivers provider-managed finished applications to consumers instead of raw infrastructure building blocks. Those technical conditions are not interchangeable.

C:

PaaS supplies managed application runtime and platform capabilities while customers typically manage their code and data. The offered choice instead concerns a different principle: NETCONF and RESTCONF may access YANG-modeled data but use different transport and operation encodings. Those technical conditions are not interchangeable.