Domain1

Question 1

historic 3 tiers of datacenter

Answer 1

core
distribution
access layer switches

Question 2

north-south datacenter traffic

Answer 2

clients outside datacenter
corporate network traffic flows

Question 3

east-west datacenter traffic

Answer 3

between servers in datacenter

Question 4

zero trust architectures

Answer 4

highly segmented network
each link between servers authenticated and authorized

Question 5

overlay network

Answer 5

point to point logical link between 2 nodes or networks
abstracts physical topology
use virtual extensible LAN (VXLAN)

Question 6

access/edge layer

Answer 6

allows outside devices to connect to network
interface with LAN/data switches
star topology

Question 7

distribution layer

Answer 7

interconnections between access blocks
mesh network
layer 3 switches
routing boundaries, filtering, Quality of Service

Question 8

layer 3 switches

Answer 8

40 gbps
route once,switch many
application specific integrated circuit (ASIC)
faster than layer 2, less flexible
no WAN routing
ethernet only

Question 9

core layer

Answer 9

interconnections between blocks
no direct device connections
mesh topology