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| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Designing Cisco Enterprise Networks |
| Exam Number: | 300-420 ENSLD |
| Certificate Validity Period: | 3 years |
| Passing Score: | Pass/Fail |
| Exam Price: | USD 400 |
| Real Exam Qty: | 55โ65 |
| Related Certifications: | Cisco Certified Network Professional (CCNP) Enterprise Cisco Certified Specialist โ Enterprise Design |
| Available Languages: | English, Japanese |
| Exam Format: | Simulations, Scenario-based, Drag-and-drop, Multiple choice |
| Exam Duration: | 90 minutes |
| Recommended Training: | Designing Cisco Enterprise Networks (ENSLD) Official Training |
| Exam Registration: | Cisco Official Registration Pearson VUE |
| Sample Questions: | Cisco 300-420 Sample Questions |
| Exam Way: | Online proctored or in-person at authorized test centers |
| Pre Condition: | Recommended: Implementing and Operating Cisco Enterprise Network Core Technologies (350-401 ENCOR) or equivalent knowledge |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/ensld-300-420.html |
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Cisco 300-420 is an exam that is designed to test your knowledge and skills in designing Cisco Enterprise Networks. Designing Cisco Enterprise Networks certification exam is aimed at network designers who are responsible for designing and implementing advanced Cisco Enterprise network solutions. 300-420 Exam is intended to validate your knowledge of how to design and deploy a secure, scalable, and reliable network infrastructure that meets the needs of modern businesses.
NEW QUESTION # 317
When a first hop redundancy solution is designed, which protocol ensures that load balancing occurs over multiple routers using a single virtual IP address and multiple virtual MAC addresses?
Answer: C
Explanation:
Gateway Load Balancing Protocol is the first-hop redundancy protocol that provides load balancing while presenting a single default gateway IP address to hosts. Cisco's GLBP documentation states that GLBP
"provides load balancing over multiple routers using a single virtual IP address and multiple virtual MAC addresses." That wording directly matches the requirement in the question. In a GLBP group, the active virtual gateway answers ARP requests for the virtual IP address and can return different virtual MAC addresses associated with active virtual forwarders. As a result, multiple routers forward traffic for the same subnet rather than leaving one router idle during normal operation. HSRP and VRRP provide first-hop redundancy, but their basic operation uses one active or master forwarding device for a virtual IP at a time unless multiple groups are manually engineered per VLAN. IRDP is not the Cisco campus FHRP used for this design. Therefore, when the requirement is automatic load balancing across multiple routers using one virtual IP and multiple virtual MAC addresses, GLBP is the correct protocol.
NEW QUESTION # 318
Refer to the exhibit. A network engineer must design a BGP solution based on:
- The route reflector must have one or more direct physical connections to the core routers (R3 and R4).
- The route reflector must have full redundancy and avoid a single
point of failure.
- R2 to R1 link utilization is 90%, and the remaining links are less
than 50% utilized.
Which two solutions must the design include? (Choose two.)
Answer: A,E
Explanation:
We want to try and centralize our Route Reflector, in this example all routers qualify to be Route Reflectors because they have at least 1 link connected to R3/R4 the core Routers.
- We want to try avoid link between R1 and R2 because it's caping at 90%.
- Answer A uses the link that's 90%
- Answer B is not a centralize location, R5 is way down there.
- Answer C utilize the link that's at 90%
- D & E both have redundancy and do not use the link that has 90% and it's centralized.
NEW QUESTION # 319 
Refer to the exhibit. Customers report low video quality and delays when having point-to-point telepresence video calls between the two locations. An architect must optimize a design so that traffic follows the same path for egress and ingress traffic flows. Which technique optimizes the design?
Answer: A
NEW QUESTION # 320
Drag and drop the properties from the left onto the protocols they describe on the right.
Answer:
Explanation:
NEW QUESTION # 321
What is the purpose of a Cisco SD-Access underlay network?
Answer: A
Explanation:
The Cisco SD-Access underlay provides the physical and IP transport foundation that allows fabric nodes to reach each other. In plain terms, it is the routed connectivity built from the switches, routers, links, and loopback reachability that the overlay depends on. Cisco SD-Access then uses the overlay to provide virtualization, segmentation, policy, and endpoint mobility on top of that transport. This is why the underlay is best described as establishing the connectivity between the switches and routers that form the fabric. Option A describes the abstraction performed by the overlay, not the underlay. Option B is closer to a Layer 2 tunneling description and is not the main purpose of the SD-Access underlay. Option D describes encapsulated overlay behavior, especially VXLAN-based data-plane transport, not the physical/routed foundation itself. A good SD- Access design validates underlay reachability, routing adjacencies, MTU, loopback advertisement, and redundancy before onboarding the overlay services. Without a stable underlay, LISP control-plane mappings and VXLAN data-plane forwarding cannot operate predictably. Reference topics: SD-Access underlay, routed campus foundation, fabric node reachability, overlay dependency.
NEW QUESTION # 322
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