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Cisco 300-420 exam is designed to assess the knowledge and skills required to design enterprise networks. 300-420 exam is aimed at network professionals who are responsible for designing, implementing, and managing networks in an enterprise environment. 300-420 exam tests the candidates' ability to design scalable and reliable networks that meet the business requirements of an organization.
Passing the Cisco 300-420 exam requires a strong understanding of network design principles and hands-on experience with Cisco technologies. Candidates are recommended to have at least three to five years of experience working with enterprise networks and should have a good understanding of Cisco technologies such as Cisco DNA Center, Cisco SD-WAN, and Cisco ISE. With the Cisco 300-420 Certification, network professionals can demonstrate their expertise in designing enterprise networks using Cisco technologies and enhance their career prospects in the field of network engineering.
NEW QUESTION # 311
A customer reports that each time a networking component fails, OSPF recalculates the backup path, with causes a short outage. Which solution must the customer implement to improve this situation?
Answer: B
Explanation:
OSPF Loop-Free Alternate (LFA) Fast Reroute (FRR) allows OSPF to quickly switch (within 50 ms) to a backup path when a primary path fails. Without LFA FRR, OSPF has to re-run SPF to find a new path when the primary path fails. With LFA FRR, OSPF pre-computes a backup path and installs the backup next hop in the forwarding table.
https://networklessons.com/cisco/ccie-routing-switching-written/ospf-loop-free-alternate-lfa-fast- reroute-frr
NEW QUESTION # 312
Refer to the exhibit.
An architect is designing a network for a customer supporting a Wake-on-LAN application. Which solution must the architect choose?
Answer: B
Explanation:
"IP directed broadcast" must be supported on the last router to the destination subnet. Since the sleeping PC's dont have IP adresses, the machines must be calles awake by broadcast that behaves like an unicast untill they reach the destination network. There the directed broadcast is handled like a proper broadcast to wake all WOL machines.
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/91672-catl3-wol-vlans.html
NEW QUESTION # 313 
Refer to the exhibit. An architect must design a solution to connect the network behind R3 with the EIGRP network. Which mechanism should be included to avoid routing loops?
Answer: C
NEW QUESTION # 314
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:
EIGRP variance is the correct design because the requirement is to use the best two paths while all links are available and maintain forwarding if one path fails. EIGRP supports unequal-cost load balancing when feasible successors exist and the variance multiplier allows additional loop-free paths to be installed in the routing table. Cisco EIGRP design uses the feasible distance and reported distance conditions to ensure that unequal-cost alternatives are loop free before they are used. The maximum-paths command controls how many equal or eligible paths can be installed, but it does not make an unequal path eligible. Add-paths is a BGP feature, not an EIGRP mechanism. Changing metric weights is rarely recommended because it affects metric calculation globally and can create inconsistent routing if not deployed everywhere. Variance 2 allows EIGRP to include backup paths whose metric is within two times the successor metric, assuming they satisfy the feasibility condition. Reference topics: EIGRP variance, unequal-cost load balancing, feasible successor, DUAL, path resiliency.
NEW QUESTION # 315
A customer's environment includes hosts that support IPv6-only. Several of these hosts must communicate with a public web server that has only IPv4 domain name resolution. Which solution should the customer use in this environment?
Answer: C
NEW QUESTION # 316
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