Chapter 1_part-1

Question 1

Hierarchy?

Answer 1

hierarchical network model

Question 2

Modularity?

Answer 2

functions of network broken down into modules like: enterprise campus, service block, data center, internet edge.

Question 3

resiliency?

Answer 3

network is available under both normal and abnormal conditions.

Question 4

Flexibility:

Answer 4

portions of the network can be modified easily.

Question 5

flat switched network is what?

Answer 5

when a network only uses layer 2 devices. (switches… cause bottleneck when many devices are connected due to broadcasts.)

Question 6

Distribution layer?

Answer 6

policy based connectivity. boundary between access core layers.

Question 7

collapsed core design?

Answer 7

the distribution and core are one layer while the access is another.

Question 8

access layer functions?

Answer 8

poe, qos, address resolution protocol, vlan and spanning tree.

Question 9

types of devices used in core layer and why?

Answer 9

fast switching technology like: cisco 6500 or 6800 switches. avoids using cpu intensive packet manipulation such as qos, that should be provided at the distributional layer.

Question 10

access distribution module is what?

Answer 10

the fundamental component of a campus design. (Distribution block)

Question 11

module: services- is what?

Answer 11

block used to identify services like: wireless controllers, policy gateways and more.

Question 12

module: data center - is what?

Answer 12

contains all the business operations data. server farm

Question 13

module: enterprise edge?

Answer 13

internet/ connectivity outside the enterprise for internet, voice, etc.

Question 14

Cisco Enterprise Architecture model purpose?

Answer 14

provides modular network design while also using the cisco hierarchical model.

Question 15

Cisco Enterprise Architecture module types?

Answer 15

enterprise: campus, edge and service provider edge.

Question 16

Cisco enterprise edge consists of what and what function does it provide?

Answer 16

The enterprise edge module provides connectivity for voice, video, and data services outside the enterprise. these services come from sub modes into the campus core in the enterprise campus.

Question 17

Enterprise edge sub models include?

Answer 17

e-commerce networks and servers, internet connectivity and demilitarized zone (DMZ), Remote access/ VPN and WAN.

Question 18

Service provider edge provides what?

Answer 18

service provider connections sometimes with redundancy or fail over connections like: dual-homed or single-homed.or multiple ISP’s.

Question 19

dual-homes means what?

Answer 19

service provider edge: 2 or more connections to a single isp.

Question 20

single homed means what?

Answer 20

one connection to a isp.

Question 21

what is multi-homed and where is it used in the cisco enterprise architecture?

Answer 21

service edge provider portion of the enterprise architecture: multi-homes is when more than one ISP (internet service provider) is connected to an enterprise via one connection each.

Question 22

what is Dual-Multihomed and where is it used in the enterprise architecture?

Answer 22

multiple connections to 2 or more ISP(internet service providers) in the service provider module of the enterprise architecture.

Question 23

Remote functional area- of the enterprise architecture?

Answer 23

remote connectivity options for employees in the Enterprise Architecture. allows access to business resources and data

Question 24

what are the sub-models of the Remote functional area in the enterprise architecture?

Answer 24

Enterprise branch
Enterprise Teleworker (work from home)
Enterprise Data Center