1. What are the three layers of the hierarchical network design model?
- access
- distribution
- core
Access, distribution and core.
2. What are the advantages of designing LANs using the hierarchical model?
- scalability
- redundancy
- performance
- security
- manageability
- maintenanceand the network (scalability), and it should be easier to maximise performance.
3. What is the purpose of the access layer?
- to provide a means of connecting devices to the network and controlling which ones are allowed.
It allows end devices toconnect to the network and controls which devices may connect
4. What sort of devices are found at the access layer?
- PC’s, faxes, printers, WAP’s, routers, switches, hubs
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Should the same type of switch be used at each layer of the hierarchical design?
- no at the access layer less expensive switches can be used and at the core and distribution layers speed is the necessity.
17. What is “network diameter” in hierarchical network design?
- the number of devices that a packet has to cross before it reaches its destination
18. What is network device latency?
- the time spent by a device as it processes a packet or frame
19. What sort of processing does a switch have to do on each packet?
- each switch has to determine the destination MAC address of the frame, check it MAC address table, and forward the frame out the appropriate port
20. How can bandwidth aggregation be implemented?
- two or more connections are combined to create a logically singular higher bandwidth connection (pg8)
21. Why is redundancy not normally provided at the access layer?
- it’s not worth the cost to add the redundancy directly to each access device
21. When designing a new network, at which layer would you start?
- access layer. It ensures that when you have all network devices have access to the network then you can work up.
22. What is a converged