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| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Designing Cisco Enterprise Networks |
| Exam Number: | 300-420 ENSLD |
| Real Exam Qty: | 55โ65 |
| Certificate Validity Period: | 3 years |
| Passing Score: | Pass/Fail |
| Exam Duration: | 90 minutes |
| Available Languages: | English, Japanese |
| Exam Price: | USD 400 |
| Exam Format: | Scenario-based, Multiple choice, Simulations, Drag-and-drop |
| Related Certifications: | Cisco Certified Network Professional (CCNP) Enterprise Cisco Certified Specialist โ Enterprise Design |
| 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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This part makes up 25% of the whole content and measures the professionalsโ knowledge of specific technical areas. These include the following:
NEW QUESTION # 153
Exhibit:
Answer: C
Explanation:
R3 must be made an L1/L2 router so that it can connect the Level 1 area to the Level 2 backbone. IS-IS uses a two-level hierarchy. Level 1 routers know the topology inside their local area, Level 2 routers form the backbone between areas, and Level 1/Level 2 routers provide the boundary between the two. A proper IS-IS backbone cannot have isolated Level 1-only routers positioned between L1/L2 routers that need to exchange interarea reachability. If the link failure exposed an area-continuity problem, converting R3 to L1/L2 gives the area an appropriate attachment point to the backbone and restores interarea forwarding behavior. Making an unrelated router Level 1 or Level 2 only would not necessarily create the required boundary function. Simply making Area 0 L2-only is also not the focused fix if the topology still lacks a correct L1/L2 transition point.
The design principle is straightforward: every Level 1 area must have a dependable L1/L2 router through which traffic can reach destinations outside the area. Reference topics: IS-IS Level 1, Level 2 backbone, L1
/L2 routers, interarea reachability, hierarchical IGP design.
NEW QUESTION # 154
Refer to the exhibit.
An architect is designing an EIGRP solution based on these requirements:
* Traffic forwarding should use the best two paths while all links are available
* Single path failure must not impact traffic between branch and HQ
Which solution must the architect select?
Answer: B
Explanation:
ENSLD cert guide page 113. shortest path = 900, next 1700 and finally 3300 for the worst path. Witch variance 2, all routes under 1800 (900x2) become active.
NEW QUESTION # 155 
Refer to the exhibit. An architect must create a stable and scalable EIGRP solution for a customer. The design must:
*conserve bandwidth, memory, and CPU processing
*prevent suboptimal routing
*avoid any unnecessary queries
Which two solutions must the architect select? (Choose two.)
Answer: A,E
NEW QUESTION # 156
Refer to the exhibit.
An architect is designing a routing solution for a company. The new design will add a circuit routers C and D to protect against loss of connectivity to 10.0.4.0/24 during a link failure between routers B and D. Which solution must the architect choose?
Answer: B
NEW QUESTION # 157
Refer to the exhibit. A mid-size company that produces media content has four offices across the country connected via MPLS Layer 3 service, which is provided by a local ISP. The network uses static routing. In anticipation of future growth, the engineering team must review and recommend design improvements in accordance with RFC 5340 requirements. The solution must optimize the routing table and reduce the number of routing updates exchanged between routers. The updated routing design must also be reliable and avoid routing loops. Which implementation meets the requirements?
Answer: B
Explanation:
OSPF with stub areas optimizes routing tables, minimizes routing updates, and enhances reliability by reducing unnecessary route advertisements. This approach also prevents routing loops and aligns with RFC 5340 requirements for OSPFv3.
NEW QUESTION # 158
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