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The Designing Cisco Enterprise Networks (ENSLD) (300-420)

Passing Cisco CCNP Enterprise exam ensures for the successful candidate a powerful array of professional and personal benefits. The first and the foremost benefit comes with a global recognition that validates your knowledge and skills, making possible your entry into any organization of your choice.

300-420 pdf (PDF) Q & A

Updated: Mar 25, 2026

339 Q&As

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300-420 PDF + Test Engine (PDF+ Test Engine)

Updated: Mar 25, 2026

339 Q&As

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300-420 Test Engine (Test Engine)

Updated: Mar 25, 2026

339 Q&As

Answers with Explanation

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300-420 Exam Dumps
  • Exam Code: 300-420
  • Vendor: Cisco
  • Certifications: CCNP Enterprise
  • Exam Name: Designing Cisco Enterprise Networks (ENSLD)
  • Updated: Mar 25, 2026 Free Updates: 90 days Total Questions: 339 Try Free Demo

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Cisco 300-420 Exam Domains Q&A

Certified instructors verify every question for 100% accuracy, providing detailed, step-by-step explanations for each.

Question 1 Cisco 300-420
QUESTION DESCRIPTION:

300-420 Q1

Refer to the exhibit. An architect is designing an ISIS solution with these requirements:

    The backbone area will grow to 50 routers in the next 12 months.

    Routers A1 and A2 must avoid suboptimal routing.

    Summarization and route-leaking should be allowed in areas 49.002 and 49.003.

Which solution must the architect select?

  • A.

    area 49.000 L1, area 49.001 L2, area 49.002 L2, and area 49.003 L2

  • B.

    area 49.000 L1, area 49.001 L1, area 49.002 L2, and area 49.003 L2

  • C.

    area 49.000 L2. area 49.001 L1, area 49.002 L1, and area 49.003 L1

  • D.

    area 49.000 L2. area 49.001 L2, area 49.002 L1, and area 49.003 L1

Correct Answer & Rationale:

Answer: C

Question 2 Cisco 300-420
QUESTION DESCRIPTION:

An engineer is working for a large cable TV provider that requires multiple sources streaming video on different channels using multicast with no rendezvous point. Which multicast protocol meets these requirements?

  • A.

    PIM-SM

  • B.

    PIM-SSM

  • C.

    any-source multicast

  • D.

    BIDIR-PIM

Correct Answer & Rationale:

Answer: B

Explanation:

PIM-SSM is suitable for when well-known sources exist within the local PIM domain and for broadcast applications. Also, PIM-SSM eliminates the RPs and shared trees

Question 3 Cisco 300-420
QUESTION DESCRIPTION:

300-420 Q3

Refer to the exhibit. An engineer must ensure that the QoS design guarantees bandwidth for the applications, and an application can request a particular type of service to support its delay requirements. Which solution must the engineer select?

  • A.

    Diffserv with RSVP

  • B.

    IntServ with RSVP

  • C.

    Diffserv with DSCP

  • D.

    IntServ with DSCP

Correct Answer & Rationale:

Answer: B

Question 4 Cisco 300-420
QUESTION DESCRIPTION:

Refer to the exhibit.

300-420 Q4

The failover time of ISP-2 is significantly shorter than ISP-1 when an interface on the ISP router toward the campus network fails. Which solution minimizes the downtime to the sub-second?

  • A.

    Aggressive timers

  • B.

    Next-hop address tracking

  • C.

    Graceful-restart

  • D.

    BFD

Correct Answer & Rationale:

Answer: D

Explanation:

https://www.cisco.com/c/en/us/td/docs/ios/12_2sb/feature/guide/sbbnhop.html

Question 5 Cisco 300-420
QUESTION DESCRIPTION:

300-420 Q5

Refer to the exhibit. An engineer Is designing a multicampus Layer 3 Infrastructure using EIGRP as the routing protocol. The design must provide quick replies to queries In the event of a downlink, prevent unnecessary queries, and ensure that traffic does not unnecessarily transit the access layer. Which two actions must the engineer take for the network design? (Choose two.)

  • A.

    Configure core layer switches as stub routers.

  • B.

    Configure distribution layer switches to summarize routes to the core layer.

  • C.

    Configure access layer switches as stub routers.

  • D.

    Configure access layer and core layer switches as stub routers.

  • E.

    Configure access layer switches to summarize routes to the distribution layer.

Correct Answer & Rationale:

Answer: B, C

Question 6 Cisco 300-420
QUESTION DESCRIPTION:

Which information update is carried by OMP and enables the Cisco SD-WAN to build a secure overlay fabric on top of any public or private transport without regard for the actual link IP?

  • A.

    TLOC

  • B.

    RLOC

  • C.

    LISP PITR

  • D.

    DTLS

Correct Answer & Rationale:

Answer: D

Question 7 Cisco 300-420
QUESTION DESCRIPTION:

What are two advantages of the Cisco SD-WAN technology 9 (Choose two)

  • A.

    Improved application experience

  • B.

    Easier deployment

  • C.

    Optimized cloud connectivity

  • D.

    Proactive network management

  • E.

    Consistent connectivity

Correct Answer & Rationale:

Answer: A, C

Question 8 Cisco 300-420
QUESTION DESCRIPTION:

300-420 Q8

Refer to the exhibit. An architect is designing a Layer 3 campus network The design must hide network instability, reduce network overhead, and conserve critical device memory Which route summarization solution must the architect select?

  • A.

    • The core layer must advertise a default route toward the aggregation layer

    • The VLAN subnets must be summarized into 10 0 0 0. ' 16 at the aggregation layer and advertised to the core layer

  • B.

    • The core layer must advertise a default route toward the aggregation layer

    • The VLAN subnets must be summarized into 10 0 0 0/16 at the access layer and advertised to the aggregation layer

  • C.

    • The aggregation layer must advertise a default route toward the access layer.

    • The VLAN subnets must be summarized into 10 0.0 0/16 at the aggregation layer and advertised to the core layer

  • D.

    • The aggregation layer must advertise a default route toward the core layer

    • The VLAN subnets must be summarized into 10 0 0 0.116 at the aggregation layer and advertised to the access layer

Correct Answer & Rationale:

Answer: C

Question 9 Cisco 300-420
QUESTION DESCRIPTION:

What is the purpose of a control plane node in a Cisco SD-Access network fabric?

  • A.

    to maintain the endpoint database and mapping between endpoints and edge nodes

  • B.

    to detect endpoints in the fabric and inform the host tracking database of EID-to-fabric-edge node bindings

  • C.

    to identify and authenticate endpoints within the network fabric

  • D.

    to act as the network gateway between the network fabric and outside networks

Correct Answer & Rationale:

Answer: B

Explanation:

https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html

Question 10 Cisco 300-420
QUESTION DESCRIPTION:

In Cisco SD-Access. virtual networks create segmentation that allows for separation of users and resources. How is this type of segmentation described?

  • A.

    macro

  • B.

    inter-VN

  • C.

    micro

  • D.

    stretctied

Correct Answer & Rationale:

Answer: A

A Stepping Stone for Enhanced Career Opportunities

Your profile having CCNP Enterprise certification significantly enhances your credibility and marketability in all corners of the world. The best part is that your formal recognition pays you in terms of tangible career advancement. It helps you perform your desired job roles accompanied by a substantial increase in your regular income. Beyond the resume, your expertise imparts you confidence to act as a dependable professional to solve real-world business challenges.

Your success in Cisco 300-420 certification exam makes your visible and relevant in the fast-evolving tech landscape. It proves a lifelong investment in your career that give you not only a competitive advantage over your non-certified peers but also makes you eligible for a further relevant exams in your domain.

What You Need to Ace Cisco Exam 300-420

Achieving success in the 300-420 Cisco exam requires a blending of clear understanding of all the exam topics, practical skills, and practice of the actual format. There's no room for cramming information, memorizing facts or dependence on a few significant exam topics. It means your readiness for exam needs you develop a comprehensive grasp on the syllabus that includes theoretical as well as practical command.

Here is a comprehensive strategy layout to secure peak performance in 300-420 certification exam:

  • Develop a rock-solid theoretical clarity of the exam topics
  • Begin with easier and more familiar topics of the exam syllabus
  • Make sure your command on the fundamental concepts
  • Focus your attention to understand why that matters
  • Ensure hands-on practice as the exam tests your ability to apply knowledge
  • Develop a study routine managing time because it can be a major time-sink if you are slow
  • Find out a comprehensive and streamlined study resource for your help

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Cisco 300-420 PDF Study Guide

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Cisco 300-420 CCNP Enterprise FAQ

What are the prerequisites for taking CCNP Enterprise Exam 300-420?

There are only a formal set of prerequisites to take the 300-420 Cisco exam. It depends of the Cisco organization to introduce changes in the basic eligibility criteria to take the exam. Generally, your thorough theoretical knowledge and hands-on practice of the syllabus topics make you eligible to opt for the exam.

How to study for the CCNP Enterprise 300-420 Exam?

It requires a comprehensive study plan that includes exam preparation from an authentic, reliable and exam-oriented study resource. It should provide you Cisco 300-420 exam questions focusing on mastering core topics. This resource should also have extensive hands on practice using Cisco 300-420 Testing Engine.

Finally, it should also introduce you to the expected questions with the help of Cisco 300-420 exam dumps to enhance your readiness for the exam.

How hard is CCNP Enterprise Certification exam?

Like any other Cisco Certification exam, the CCNP Enterprise is a tough and challenging. Particularly, it's extensive syllabus makes it hard to do 300-420 exam prep. The actual exam requires the candidates to develop in-depth knowledge of all syllabus content along with practical knowledge. The only solution to pass the exam on first try is to make sure diligent study and lab practice prior to take the exam.

How many questions are on the CCNP Enterprise 300-420 exam?

The 300-420 Cisco exam usually comprises 100 to 120 questions. However, the number of questions may vary. The reason is the format of the exam that may include unscored and experimental questions sometimes. Mostly, the actual exam consists of various question formats, including multiple-choice, simulations, and drag-and-drop.

How long does it take to study for the CCNP Enterprise Certification exam?

It actually depends on one's personal keenness and absorption level. However, usually people take three to six weeks to thoroughly complete the Cisco 300-420 exam prep subject to their prior experience and the engagement with study. The prime factor is the observation of consistency in studies and this factor may reduce the total time duration.

Is the 300-420 CCNP Enterprise exam changing in 2026?

Yes. Cisco has transitioned to v1.1, which places more weight on Network Automation, Security Fundamentals, and AI integration. Our 2026 bank reflects these specific updates.

How do technical rationales help me pass?

Standard dumps rely on pattern recognition. If Cisco changes a single IP address in a topology, memorized answers fail. Our rationales teach you the logic so you can solve the problem regardless of the phrasing.