Answer the following questions: Discuss the role of each layer in the hierarchic

Question

Answer the following questions:

Discuss the role of each layer in the hierarchical network model. (1 point)

What are three roles of the hierarchical model’s core layer? (1 point)

What are the major functional areas in the Cisco Network Architectures for Enterprise? Describe each area. (1 point)

Why does the Cisco hierarchical network design suggest only using a two-tier LAB design for small to medium sized companies? What do the two tiers look like? (1 point)

What is the main function of an access layer switch, and where do you find it? What features are important for an access layer switch? (1 point)

What is the main function of a distribution/core layer switch, and where do you find it? What features are important for a distribution/core layer switch? (1 point)

What other factors besides network requirements and costs should be considered when selecting a switch to add to your company’s network? (1 point)

Choose an access switch appropriate for the following scenario. A company has a project that requires visiting internal employees who will be coming in on an as needed basis and working out of a conference room (since no cubicles are available). The switch will be placed on the conference room table and switch security is a priority. What switch might you select? (1 point)

Choose an access switch appropriate for the following scenario. A company wants to replace a switch currently located in the wiring closet, and wants the new switch to be able to scale for future growth and increased bandwidth usage. Currently there are 32 users that need high-speed uplink. The company is considering new applications, so they have required VoIP and multicast support for the new switch as well. What are some of the models that you could choose for this project? (2 points)

Choose a distribution/core switch appropriate for the following scenario. A company is planning for next year’s budget and wants to consider replacing the backbone switch. They want to minimize downtime in an event that an internal component fails and make sure they have planned for redundancy. What switch features should they consider as they investigate possible replacement switches? (1 point)

11.What switch models could they consider for this scenario? (2 points)

Choose a distribution/core switch appropriate for the following scenario. A company is planning for next year’s budget and wants to consider replacing the backbone switch. They want to plan for high speed (10GB Ethernet), up to 8 uplink ports and a modular switch configuration. What switch model should they consider as they investigate possible replacement switches? (2 points)

13. Look at the Cisco switch selector tool at: http://www.cisco.com/c/dam/assets/prod/switches/cisco_switch_selector_campus/index.html?CAMPAIGN=DG+Test+IMX&COUNTRY_SITE=us&POSITION=sl&REFERRING_SITE=cisco%2Ecom+homepage&CREATIVE=homepage+spotlight

How do you like this tool and what features does it help you with? How easy was it to use? (1 point)

Explanation / Answer

hierarchical model:

Having a structure consisting of multiple levels. A hierarchical structure would mean that the chain of command looks like a pyramid, with a large base of workers.

corelayer:

             A core layer of high-end routers and switches that are optimized for availability and performance.

Distributation layer:

      A distribution layer of routers and switches that implement policies.

Accesslayer:
    An access layer that connects users via lower-end switches and wireless access points.

Cisconetwork desin enterprice:

        The Cisco Enterprise Architecture is a modular approach to network design. This section identifies enterprise architecture modules that are commonly found in medium-to-large organizations.

Cisco two-tire lab:

        Cisco has a broad portfolio of API-driven technologies and products to choose from as a developer, representing some of the most advanced and powerful software and hardware solutions on earth.

   Features in labs:

UC Endpoint Lab -

        This 'aways on' lab is always-on and instantly accessible, providing client/endpoint services for Cisco Unified Communicatins Manager, CUCM IM & Presence, Cisco Jabber Guest and Cisco Remote Expert Mobile.

Collaboration Plus Labs -

These reservable labs can be accessed for dedicated, flexible development.

networkswtich layer model:

A network switch (also called switching hub, bridging hub, officially MAC bridge) is a computer networking device that connects devices together on a computer network, by using packet switching to receive, process and forward data to the destination device.

Distribution layer:

        The distribution layer of the network is the demarcation point between the access and core layers and helps to define and differentiate the core. The purpose of this layer is to provide boundary definition and is the place at which packet manipulation can take place. In the campus environment, the distribution layer can include several functions

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