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Cisco 300-420 certification exam is a comprehensive test that covers a broad range of topics related to designing enterprise networks. 300-420 exam focuses on network design principles and concepts, including advanced addressing and routing solutions, advanced enterprise campus networks, WAN, security, and network services. 300-420 exam also tests the candidate's knowledge of network virtualization technologies, network automation, and network programmability.
Cisco 300-420 Exam is a challenging exam that requires a significant amount of preparation and study. 300-420 exam consists of 60-70 questions and has a duration of 90 minutes. The questions are designed to test the candidate's understanding of the design principles and best practices for enterprise-level networks. 300-420 exam is computer-based and can be taken at any authorized Pearson VUE testing center.
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Cisco 300-420 (Designing Cisco Enterprise Networks) certification exam is a comprehensive exam that tests the knowledge and skills of network design engineers. 300-420 exam covers a wide range of topics related to enterprise network design and is intended for network architects, network designers, and network engineers. 300-420 Exam is challenging and requires extensive preparation, but it is an important certification that can help candidates to advance their careers and increase their earning potential.
NEW QUESTION # 429
A network engineer prepares a script to configure a loopback interface with IP address
172.16.15.12/32. To comply with the company security policies, 'Content-type': 'application/yang- data+json' is added to the script. Connection to the network devices must be secured. Which code snippet must the network engineer use to meet this requirement?
Answer: D
NEW QUESTION # 430
Which component of Cisco SD-Access integrates with Cisco DNA Center to perform policy segmentation and enforcement through the use of security group access control lists and security group tags?
Answer: D
Explanation:
Cisco Identity Services Engine is the SD-Access component that integrates with Cisco DNA Center to provide identity-based policy, Security Group Tags, and Security Group ACL policy enforcement. Cisco SD- Access uses Cisco TrustSec technology concepts for group-based policy, but ISE is the actual policy and identity services platform that integrates with Cisco DNA Center. DNA Center automates fabric deployment and policy orchestration, while ISE provides endpoint identity, group assignment, scalable group information, and policy authorization. SGACLs define permitted or denied communication between security groups, and SGTs classify users or endpoints into those groups. APIC-EM is not the SD-Access policy platform. Cisco Network Data Platform supports analytics and assurance functions, not identity policy enforcement. Cisco TrustSec is the underlying policy technology, but the question asks for the component that integrates with Cisco DNA Center. Therefore, the verified answer is Cisco Identity Services Engine. In design terms, ISE should be planned as a critical policy-plane dependency with redundancy, pxGrid integration, RADIUS services, and consistent scalable group policy design.
NEW QUESTION # 431
A customer requested that a guaranteed service line be enabled for a manufacturing business in different countries. On the customer side, the QoS-aware application is used to process large data chunks. The application cannot tolerate drops and latency should be as low as possible. Which QoS model must an engineer employ to use the minimum required resources on the ISP network nodes?
Answer: A
Explanation:
An end-to-end QoS strategy with an SLA is the best fit for an application that cannot tolerate drops and requires very low latency across countries. The customer is asking for guaranteed service behavior, not just local classification on one router. A service line with an SLA defines the expected treatment across the provider network, including bandwidth, delay, jitter, and loss commitments. This is especially important for industrial or manufacturing applications that process large data chunks and are sensitive to packet loss. A purely domain-based PHB design can mark and forward traffic differently at each hop, but it does not by itself guarantee the business outcome unless backed by an end-to-end service agreement. A flow-based approach with per-flow queuing on every ISP node would consume more provider resources and scale poorly. FEC can help selected traffic but does not replace a QoS service model. Reference topics: QoS design, service-level agreements, end-to-end QoS, low-latency applications, loss-sensitive traffic, provider WAN services.
NEW QUESTION # 432
Refer to the exhibit. The company is in the design phase of the network lifecycle, and this is the proposed design that the lead architect must validate. Which two issues must the architect recommend addressing? (Choose two.)
Answer: A,E
Explanation:
There will be an adjacency issue between R12 and R30 because R12 only supports IPv6 on that link, while R30 is running both IPv4 and IPv6. If IPv6 is not consistently enabled and configured across both devices, adjacency may fail.
There will be an adjacency issue between R13 (IPv6-only) and R20 (IPv4/IPv6 dual-stack). If the protocols do not match, IS-IS adjacency cannot form.
NEW QUESTION # 433
Refer to the exhibit. An engineer working for a telecommunication company with an employee ID:
1234:56:789 is calculating STP scalability for switches to ensure that the numbers are below the maximum supported value for STP logical ports. How many logical interfaces are active for switch A?
Answer: A
Explanation:
When designing a large data center using extended Layer 2 VLAN topologies, it is necessary to calculate the spanning tree logical and virtual ports in advance to ensure that spanning tree operates with optimal convergence and stability characteristics.
trunks on the switch * active VLANs on trunks + number of non-trunking interfaces on the switch
2 Trunks * 100 Vlans + 2 = 202 Active Logical Interfaces
NEW QUESTION # 434
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