Which two statements describe the hierarchical LAN design model? (Choose two.)
Answer(s): A,C
The hierarchical LAN design model is a well-established architecture that has been used for many years. It is a layered architecture that divides the network into three layers: the access layer, the distribution layer, and the core layer. This layering provides scalability and flexibility, as changes can be made to the network without affecting the entire network.The hierarchical LAN design model also allows for the controlled and staged introduction of changes, upgrades, and new services. This is because the different layers of the network can be upgraded or changed independently of each other. This helps to minimize disruption to the network and allows for a more controlled and orderly deployment of changes.The other options are not correct. Option B, it is the best design for modern data centers, is not correct because the hierarchical LAN design model is not the best design for all data centers. Option D, it is the most optimal design but is highly complex, is not correct because the hierarchical LAN design model is not the most optimal design for all networks. Option E, it provides a simplified design, is not correct because the hierarchical LAN design model is a complex architecture.
Refer to the exhibit. An engineer has been asked to redesign the traffic flow toward AS 111 coming from AS 500. Traffic destined to AS 111 network 91.7.0.0/16 should come in via AS 100, while traffic destined to all other networks in AS 111 should continue to use the existing path. Which BGP attributes are best suited to control this inbound traffic coming from BGP AS 500 into the 91.7.0.0/16 network?
Answer(s): B
An enterprise that runs numerous proprietary applications has major issues with its on-premises server estate hardware, to the point where business-critical functions are compromised. The enterprise accelerates plans to migrate services to the cloud. Which cloud service should be used if the enterprise wants to avoid hardware issues yet have control of its applications and operating system?
Answer(s): C
IaaS (Infrastructure as a Service) is a cloud computing service that provides the basic building blocks for cloud IT—servers, storage, networking, and operating systems. This means that the enterprise will have control of its applications and operating system, while avoiding hardware issues by using the cloud provider's infrastructure.SaaS (Software as a Service) provides applications that are hosted on the cloud and accessed by users over the internet. This means that the enterprise would not have control of its applications, and would not be able to avoid hardware issues.PaaS (Platform as a Service) provides a platform for developing, deploying, and managing applications. This means that the enterprise would have control of its applications, but would not have control of the underlying operating system.Hybrid cloud is a combination of public cloud and private cloud. This means that the enterprise would have some control over its applications and operating system, but would not be able to avoid hardware issues entirely.Therefore, the best cloud service for the enterprise is IaaS, as it will allow them to avoid hardware issues while still having control of their applications and operating system.Here are some additional reasons why IaaS is a good choice for the enterprise:-IaaS is a scalable and flexible service, which can grow with the enterprise's needs.-IaaS is a cost-effective service, as the enterprise only pays for the resources that they use.-IaaS is a reliable service, as the cloud provider will take care of the underlying infrastructure.-
How must the queue sizes be designed to ensure that an application functions correctly?
Answer(s): D
The queuing delay is the time that a packet spends waiting in a queue before it is transmitted. The serialization delay is the time it takes to serialize a packet onto a link. The application required delay is the maximum amount of time that a packet can spend in the network before it is delivered to its destination.If the sum of the queuing delay of all devices plus serialization delay in the chain is greater than the application required delay, then packets will be dropped. This is because the packets will not be able to get through the network in time to meet the application's requirements.Therefore, the queue sizes must be designed so that the sum of the queuing delay of all devices plus serialization delay in the chain is less than or equal to the application required delay.
An enterprise requires MPLS connected branches to access cloud-based Microsoft 365 services over an SD-WAN solution. Internet access is available only at dual regional hub sites that are connected to the MPLS network. Which connectivity method provides an optimum access method to the cloud-based services if one ISP suffers loss or latency?
Cloud OnRamp gateway site is only one of a few method to optimise SAAS connectivity within a SDWAN implementation. the overarching solution is 'Cloud OnRmap SAAS'. with the options provided D is the most accurate answer
https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/cloudonramp/vedge-20-x/cloud-onramp-book-vedge/cor-saas.html#common-scenarios-cor-saas-b
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