chapter9

Question 1

sections of cisco hierarchial network model

Answer 1

• core layer
• distribution layer
• access layer

Question 2

cisco hierarchial network model

Answer 2

• solve problems of designing networks
  1) specialization
  2) scalibility
  3) limitation of problem domain

Question 3

core layer

Answer 3

sits at center of network (backbone). this is where networks meet. paramount to have redundency

Question 4

redundency

Answer 4

have a backup if core component fails. have one service class device or multiple enterprise class devices hooked together

Question 5

best core router today

Answer 5

CRS-1. uses blade architecture for easy expansion.

Question 6

distribution layer

Answer 6

link core layer to access layer. also called workgroup layer. inter connect LANs and lessen the load on the core router

Question 7

NAT

Answer 7

network address translation. modifies packet IP address when going through router.

Question 8

access layer

Answer 8

layer than interconnects host devices to LANs. pretty much consists of your computers going through one router.