1.8 Apply troubleshooting methodologies to resolve problems

1.8.a Perform and document fault isolation Refers to the first part of the troubleshooting problem. In this first step the problem is isolated and verified. It is important that the problem is documented and entered into a job tracking system. The problems needs to be isolated down to a root cause, and this root cause …

1.7 Select the appropriate cabling type based on implementation requirements

Cost, transmission speed and data link distance between points will dictate which types of cabling that are required. For example in a small office Ethernet cabling would be the best choice, as fiber optic cabling would be too expensive and most end devices would not have the required interface. Transmission speeds would dictate the minimum …

1.6 Compare and contrast network topologies

1.6.a Star A star topology refers to a central device that each device centrally connects to. It resembles a star because the central device resembles a star with the connected devices radiating from the center. 1.6.b Mesh A mesh topology is where each device connects to every other device. This results in a large fault …

1.5 Compare and contrast collapsed core and three-tier architectures

Collapsed core architectures differ from 3 tier design by combining the function of the Core and Distribution layers. The wording on this subject is very precise and I failed several times to put it as well as it is described below, so I have just copy and pasted it from Cisco’s website. From Cisco’s website: …

1.4 Describe the effects of cloud resources on enterprise network architecture

1.4.a Traffic path to internal and external cloud services From the NIST website: “The NIST definition lists five essential characteristics of cloud computing: on-demand self-service, broad network access, resource pooling, rapid elasticity or expansion, and measured service. It also lists three “service models” (software, platform and infrastructure), and four “deployment models” (private, community, public and …