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The Average Salary of an Cisco 300-420 Exam
Cisco 300-420 certification exam covers a wide range of topics, including network design principles, network infrastructure design, routing protocols, switching technologies, wireless LANs, and network services. Candidates are required to have a thorough understanding of these topics and be able to apply them in real-world situations.
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Cisco 300-420 Exam consists of 60-70 multiple-choice questions that must be completed within 90 minutes. To pass the exam, candidates must score at least 750 out of 1000. 300-420 exam covers a wide range of topics, including network design methodologies, network models and architectures, advanced routing and switching protocols, network security, wireless, and virtualization.
NEW QUESTION # 74
An engineer must propose a QoS architecture model that allows an application to inform the network of its traffic profile and to request a particular type of service to support its bandwidth and delay requirements.
The application requires consistent and dedicated bandwidth end to end. Which QoS architecture model meets these requirements?
Answer: B
NEW QUESTION # 75
Drag and drop the model driven telemetry characteristics from the left onto the mode they belong to on the right.
Answer:
Explanation:
Explanation
Graphical user interface, diagram Description automatically generated with medium confidence
NEW QUESTION # 76
What is a primary capability of the cloud-based services model in an IaaS deployment?
Answer: B
Explanation:
The primary capability of IaaS in this question is elastic scaling: the ability to increase or decrease infrastructure resources based on demand. In Infrastructure as a Service, the provider offers compute, storage, and network resources as an on-demand service, while the customer deploys operating systems and applications on top of that infrastructure. Cisco cloud material describes this model as providing scalable IT capacity without requiring the organization to own all physical assets. Option C is the best answer because dynamic capacity adjustment is a fundamental cloud capability and a major reason enterprises choose IaaS for variable workloads. Option B is a valid business benefit because consumption-based billing can reduce cost, but the question asks for a primary capability, not the pricing model. Option D describes automation and orchestration, which support cloud operations but are not the specific capability being tested. Option A is closer to hybrid-cloud workload mobility and is not guaranteed by IaaS alone. Reference topics: cloud service models, IaaS, elasticity, scalable compute, on-demand resource provisioning.
NEW QUESTION # 77 
Refer to the exhibit. A network engineer with an employee ID: 4384:99:754 must design a BGP solution based on these conditions:
* Traffic sessions occur between the branches and the data center.
* Branch B has limited resources to process routing updates.
* HQ must filter out all prefixes from branch A to R4.
Which outbound route filtering (ORF) solution must the engineer choose?
Answer: C
Explanation:
The ORF filter should be applied so the route reflector or upstream peer suppresses the unwanted Branch A prefix before sending updates toward the resource-constrained branch. Cisco BGP outbound route filtering lets a receiving router advertise a prefix-list filter to its peer, causing that peer to apply the filter outbound.
This is useful when a router has limited CPU or memory because unwanted prefixes are never sent across the session. In the described design, HQ must prevent Branch A prefixes from reaching R4, while Branch B has limited resources. The answer using the 10.10.10.0/24 prefix list on R2 aligns with filtering the Branch A prefix at the point where HQ can control route reflection or advertisement toward the constrained branch path.
Applying the filter on the wrong router or using the wrong prefix would still allow unnecessary updates. ORF is preferred over simple inbound filtering when the goal is to reduce received route volume. Reference topics:
BGP ORF, prefix-list signaling, route-reflector filtering, branch route scale, outbound update suppression.
NEW QUESTION # 78
An engineer must design a QoS solution for a customer. The network currently supports data only, but the customer will roll out VoIP and IP video in conjunction with the new QoS solution. The engineer plans to use DiffServ. To ensure priority for voice services, which model must the design include?
Answer: B
NEW QUESTION # 79
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