McAfee Secure

Cisco 300-420 Bundle

Exam Code: 300-420

Exam Name Designing Cisco Enterprise Networks (ENSLD)

Certification Provider: Cisco

Corresponding Certification: CCNP Enterprise

Cisco 300-420 Bundle $25.00
300-420 Sample 1 300-420 Sample 2 300-420 Sample 3 300-420 Sample 4 300-420 Sample 5 300-420 Sample 6 300-420 Sample 7 300-420 Sample 8 300-420 Sample 9 300-420 Sample 10

100% Cisco 300-420 Guaranteed Success With Testking Training Materials

Get Real 300-420 Exam Questions & Expert Verified Answers as Experienced on the Real Exam!

  • Questions & Answers

    300-420 Questions & Answers

    416 Questions & Answers

    The ultimate exam preparation tool, Questions & Answers mirrors the actual 300-420 exam while allowing you to hone and measure every aspect of your test-taking ability.

  • 300-420 Video Course

    300-420 Training Course

    75 Video Lectures

    300-420 Video Course is developed by Cisco Professionals to help you pass the 300-420 exam.

    Description

    This course will improve your knowledge and skills required to pass Designing Cisco Enterprise Networks (ENSLD) exam.

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

Satisfaction Guaranteed

Money Back Guarantee

Testking provides hassle-free money back guarantee with our products. That is because we have 100% trust in the abilities of our professional and experience product team, and our record is a proof of that.

99.6% PASS RATE
Total Cost: $164.98
Bundle Price: $139.98

Purchase Individually

  • Questions & Answers

    Questions & Answers

    416 Questions

    $124.99
  • 300-420 Video Course

    Training Course

    75 Video Lectures

    $39.99

Cisco 300-420 Practice Test 43

Question 420

A post-incident design review discusses the following: A new SDA deployment confuses endpoint location exchange with data-plane encapsulation. Which preventive design control MOST DIRECTLY addresses this specific risk?

  1. Include underlay reachability, MTU and failure testing in fabric acceptance criteria.
  2. Maintain VN and scalable-group access policy matrices with change review.
  3. Pair spanning-tree protections with fiber health monitoring and UDLD where supported.
  4. Document control-plane nodes and data-plane validation separately.

Explanation

Correct Answer

D:

Document control-plane nodes and data-plane validation separately. This control targets the underlying design risk. Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The follow-up acceptance check remains: Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path.

Incorrect Answers

A:

An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. The repeat risk here is different: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. A directly relevant preventive control is: Document control-plane nodes and data-plane validation separately.

B:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The repeat risk here is different: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. A directly relevant preventive control is: Document control-plane nodes and data-plane validation separately.

C:

Loop Guard helps protect against unidirectional BPDU loss causing unexpected spanning-tree forwarding. The repeat risk here is different: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. A directly relevant preventive control is: Document control-plane nodes and data-plane validation separately.

Question 421

During a network design workshop, the team finds this issue: During a predeployment review for a regional distribution facility, the team discovers this design gap: a new SDA deployment confuses endpoint location exchange with data-plane encapsulation. An approval gate requires both a measurable acceptance check and a durable prevention control. Which action MOST DIRECTLY meets the stated design requirement?

  1. Design a routed IP underlay with full fabric-node reachability and predictable MTU for encapsulated traffic.
  2. Assign LISP control-plane responsibilities separately from VXLAN data-plane forwarding in the architecture.
  3. Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.
  4. Use Root Guard on the port where superior BPDUs must not be accepted.

Explanation

Correct Answer

B:

Assign LISP control-plane responsibilities separately from VXLAN data-plane forwarding in the architecture. This action addresses the stated design problem. Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. A practical confirmation is: Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path. The regional distribution facility acceptance record also captures this result.

Incorrect Answers

A:

An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. The actual fault is governed by a different mechanism: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The needed response is: Assign LISP control-plane responsibilities separately from VXLAN data-plane forwarding in the architecture.

C:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The actual fault is governed by a different mechanism: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The needed response is: Assign LISP control-plane responsibilities separately from VXLAN data-plane forwarding in the architecture.

D:

Root Guard prevents a designated switch port from accepting a downstream superior-root claim. The actual fault is governed by a different mechanism: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The needed response is: Assign LISP control-plane responsibilities separately from VXLAN data-plane forwarding in the architecture.

Question 422

In a technical design review: During a predeployment review for a regional distribution facility, the team discovers this design gap: a new SDA deployment confuses endpoint location exchange with data-plane encapsulation. An approval gate requires both a measurable acceptance check and a durable prevention control. Which technical principle BEST explains the design decision?

  1. An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes.
  2. SDA virtualization separates routing domains, while identity-based segmentation can further control communication.
  3. Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic.
  4. UDLD can detect certain unidirectional Layer 2 link conditions that simple physical carrier status misses.

Explanation

Correct Answer

C:

Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The correct engineering response is: Assign LISP control-plane responsibilities separately from VXLAN data-plane forwarding in the architecture. The observable check is: Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path. The regional distribution facility acceptance record also captures this result.

Incorrect Answers

A:

Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The offered choice instead concerns a different principle: an SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. Those technical conditions are not interchangeable.

B:

Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The offered choice instead concerns a different principle: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. Those technical conditions are not interchangeable.

D:

Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The offered choice instead concerns a different principle: UDLD can detect certain unidirectional Layer 2 link conditions that simple physical carrier status misses. Those technical conditions are not interchangeable.

Question 423

An engineering reviewer needs objective proof for the following: During a predeployment review for a regional distribution facility, the team discovers this design gap: a new SDA deployment confuses endpoint location exchange with data-plane encapsulation. An approval gate requires both a measurable acceptance check and a durable prevention control. Which acceptance observation BEST establishes the intended result?

  1. Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows.
  2. Fabric edge and border nodes resolve underlay paths and VXLAN test frames traverse without fragmentation faults.
  3. All expected physical members join one logical bundle and traffic persists if a member fails.
  4. Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path. The regional distribution facility acceptance record also captures this result.

Explanation

Correct Answer

D:

Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path. The regional distribution facility acceptance record also captures this result. Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic.

Incorrect Answers

A:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. In the case being tested, Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The necessary acceptance evidence is: Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path. The regional distribution facility acceptance record also captures this result.

B:

An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. In the case being tested, Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The necessary acceptance evidence is: Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path. The regional distribution facility acceptance record also captures this result.

C:

LACP requires peer participation and compatible member parameters before an aggregated bundle can form reliably. In the case being tested, Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The necessary acceptance evidence is: Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path. The regional distribution facility acceptance record also captures this result.

Question 424

The change advisory board sees a repeat risk in this case: During a predeployment review for a regional distribution facility, the team discovers this design gap: a new SDA deployment confuses endpoint location exchange with data-plane encapsulation. An approval gate requires both a measurable acceptance check and a durable prevention control. Which preventive design control MOST DIRECTLY addresses this specific risk?

  1. Document control-plane nodes and data-plane validation separately. Apply the same control to the regional distribution facility rollout checklist.
  2. Maintain VN and scalable-group access policy matrices with change review.
  3. Include underlay reachability, MTU and failure testing in fabric acceptance criteria.
  4. Document secure WoL relay permissions and disable unrestricted directed broadcasts.

Explanation

Correct Answer

A:

Document control-plane nodes and data-plane validation separately. Apply the same control to the regional distribution facility rollout checklist. This control targets the underlying design risk. Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The follow-up acceptance check remains: Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path. The regional distribution facility acceptance record also captures this result.

Incorrect Answers

B:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The repeat risk here is different: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. A directly relevant preventive control is: Document control-plane nodes and data-plane validation separately. Apply the same control to the regional distribution facility rollout checklist.

C:

An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. The repeat risk here is different: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. A directly relevant preventive control is: Document control-plane nodes and data-plane validation separately. Apply the same control to the regional distribution facility rollout checklist.

D:

Ordinary local broadcast frames do not propagate across a Layer 3 boundary without an explicit WoL relay design. The repeat risk here is different: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. A directly relevant preventive control is: Document control-plane nodes and data-plane validation separately. Apply the same control to the regional distribution facility rollout checklist.

Question 425

A design team must resolve this enterprise network problem: An organization wants several isolated business units on the same SD-Access physical fabric. Which action MOST DIRECTLY meets the stated design requirement?

  1. Design a routed IP underlay with full fabric-node reachability and predictable MTU for encapsulated traffic.
  2. Assign LISP control-plane responsibilities separately from VXLAN data-plane forwarding in the architecture.
  3. Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.
  4. Enable DHCP snooping and trust only the approved server-facing paths.

Explanation

Correct Answer

C:

Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs. This action addresses the stated design problem. SDA virtualization separates routing domains, while identity-based segmentation can further control communication. A practical confirmation is: Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows.

Incorrect Answers

A:

An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. The actual fault is governed by a different mechanism: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The needed response is: Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.

B:

Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The actual fault is governed by a different mechanism: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The needed response is: Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.

D:

DHCP snooping separates trusted DHCP sources from untrusted access ports and can block rogue server messages. The actual fault is governed by a different mechanism: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The needed response is: Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.

Question 426

The design record describes this issue: An organization wants several isolated business units on the same SD-Access physical fabric. Which technical principle BEST explains the design decision?

  1. An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes.
  2. Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic.
  3. Fabric-enabled wireless introduces control and forwarding integration choices different from a fully traditional overlay-free WLAN.
  4. SDA virtualization separates routing domains, while identity-based segmentation can further control communication.

Explanation

Correct Answer

D:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The correct engineering response is: Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs. The observable check is: Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows.

Incorrect Answers

A:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The offered choice instead concerns a different principle: an SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. Those technical conditions are not interchangeable.

B:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The offered choice instead concerns a different principle: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. Those technical conditions are not interchangeable.

C:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The offered choice instead concerns a different principle: Fabric-enabled wireless introduces control and forwarding integration choices different from a fully traditional overlay-free WLAN. Those technical conditions are not interchangeable.

Question 427

After designing a change for the following scenario: An organization wants several isolated business units on the same SD-Access physical fabric. Which acceptance observation BEST establishes the intended result?

  1. Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows.
  2. Endpoint registration and resolution succeed through the control plane while data packets use the expected VXLAN path.
  3. Fabric edge and border nodes resolve underlay paths and VXLAN test frames traverse without fragmentation faults.
  4. Registered endpoints remain discoverable after an edge-node change and paths reconverge as designed.

Explanation

Correct Answer

A:

Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows. SDA virtualization separates routing domains, while identity-based segmentation can further control communication.

Incorrect Answers

B:

Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. In the case being tested, SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The necessary acceptance evidence is: Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows.

C:

An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. In the case being tested, SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The necessary acceptance evidence is: Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows.

D:

The fabric control plane tracks endpoint identity or location to guide overlay forwarding. In the case being tested, SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The necessary acceptance evidence is: Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows.

Question 428

A preventive architecture review covers this situation: An organization wants several isolated business units on the same SD-Access physical fabric. Which preventive design control MOST DIRECTLY addresses this specific risk?

  1. Include underlay reachability, MTU and failure testing in fabric acceptance criteria.
  2. Maintain VN and scalable-group access policy matrices with change review.
  3. Document control-plane nodes and data-plane validation separately.
  4. Validate timer, tracking, and gateway ownership changes in scheduled failover drills.

Explanation

Correct Answer

B:

Maintain VN and scalable-group access policy matrices with change review. This control targets the underlying design risk. SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The follow-up acceptance check remains: Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows.

Incorrect Answers

A:

An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. The repeat risk here is different: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. A directly relevant preventive control is: Maintain VN and scalable-group access policy matrices with change review.

C:

Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The repeat risk here is different: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. A directly relevant preventive control is: Maintain VN and scalable-group access policy matrices with change review.

D:

An FHRP keeps a stable virtual next-hop address while redundant gateways assume active forwarding roles. The repeat risk here is different: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. A directly relevant preventive control is: Maintain VN and scalable-group access policy matrices with change review.

Question 429

A new campus or WAN review presents this constraint: During a predeployment review for a medical center network, the team discovers this design gap: an organization wants several isolated business units on the same SD-Access physical fabric. An approval gate requires both a measurable acceptance check and a durable prevention control. Which action MOST DIRECTLY meets the stated design requirement?

  1. Design a routed IP underlay with full fabric-node reachability and predictable MTU for encapsulated traffic.
  2. Assign LISP control-plane responsibilities separately from VXLAN data-plane forwarding in the architecture.
  3. Use an appropriate rapid spanning-tree design with correct edge-port roles and designated forwarding paths.
  4. Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.

Explanation

Correct Answer

D:

Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs. This action addresses the stated design problem. SDA virtualization separates routing domains, while identity-based segmentation can further control communication. A practical confirmation is: Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows. The medical center network acceptance record also captures this result.

Incorrect Answers

A:

An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. The actual fault is governed by a different mechanism: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The needed response is: Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.

B:

Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. The actual fault is governed by a different mechanism: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The needed response is: Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.

C:

RSTP enables faster convergence than legacy 802.1D in supported topologies when port roles are correctly configured. The actual fault is governed by a different mechanism: SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The needed response is: Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs.

Question 430

For this Cisco ENSLD design case: During a predeployment review for a medical center network, the team discovers this design gap: an organization wants several isolated business units on the same SD-Access physical fabric. An approval gate requires both a measurable acceptance check and a durable prevention control. Which technical principle BEST explains the design decision?

  1. SDA virtualization separates routing domains, while identity-based segmentation can further control communication.
  2. An SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes.
  3. Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic.
  4. VRRP provides an interoperable virtual-router gateway mechanism where compatible vendor implementations exist.

Explanation

Correct Answer

A:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The correct engineering response is: Use separate virtual networks and appropriate group-based policy instead of merely renaming VLANs. The observable check is: Traffic tests confirm VN isolation and permit only explicitly authorized intergroup flows. The medical center network acceptance record also captures this result.

Incorrect Answers

B:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The offered choice instead concerns a different principle: an SD-Access overlay depends on a stable IP underlay transporting encapsulated packets between fabric nodes. Those technical conditions are not interchangeable.

C:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The offered choice instead concerns a different principle: Cisco SD-Access commonly uses LISP mapping/control functions and VXLAN encapsulation to transport overlay traffic. Those technical conditions are not interchangeable.

D:

SDA virtualization separates routing domains, while identity-based segmentation can further control communication. The offered choice instead concerns a different principle: VRRP provides an interoperable virtual-router gateway mechanism where compatible vendor implementations exist. Those technical conditions are not interchangeable.