Ch1 Switch Networking Intro

Question 1

converged network

Answer 1

Network combining various services such as telephone, VOIP, voice messaging, mobile devices, and other automated systems into one network

Question 2

Cisco Borderless Network

Answer 2

network architecture that allows users to access network from any location without sacrificing security or speed.

Question 3

Borderless Design Principles (w/def)

Answer 3

1. Hierarchical - defining the role of each device at every tier clearly.
2. Modularity - allows for seamless expansion and integrated services on-demand
3. Resiliency - making sure the network is always up and accessible - fault tolerance
4. Flexibility -allows spreading the traffic load over all network resources.

Question 4

Three Layers of Tiered Borderless Network (w/def)

Answer 4

1. Access - “edge” of network ; responsible for controlling access to and from network
2. Distribution - interfaces between access and core layers; allows use of intelligent switching and interaction with larger scale network segments.
3. Core - network backbone

Question 5

PSTN

Answer 5

Public Switched Telephone Network

Question 6

Three Types of Switch Configurations (w/def)

Answer 6

1. Fixed Configuration Switches - switches whose capabilities are all built-in and non-changeable
2. Modular Configuration Switches - switches whose capabilities are expandable by use of extra modules.
3. Stackable Configuration Switches - switches that can be interconnected with each other and effectively operate as one large switch.

Question 7

Switch Selection Considerations

Answer 7

1. Cost
2. Port Density
3. Power
4. Port Speed
5. Frame Buffers
6. Scalability

Question 8

frame forwarding

Answer 8

The process of how a device passes frames through the network; LAN switches maintain table that determines where frames are sent;

Question 9

What data allows LAN switches to forward frames within a network?

Answer 9

MAC Address of Source and Destination

Question 10

ingress

Answer 10

Port where frame enters..

Question 11

egress

Answer 11

Port where frame leaves the switch.

Question 12

content addressable memory (CAM) table

Answer 12

1. Also known as MAC address table.
2. Table where the MAC address of all members of the network are stored to allow for reliable and timely frame forwarding

Question 13

Store and Forward Switching

Answer 13

Receives entire frame and checks for errors before forwarding it to its destination.

Question 14

Two Features of Store and Forward Switching

Answer 14

1. Error Checking - drops error frames.
2. Automatic Buffering - Good for different speed ports.

Question 15

Cut Through Switching

Answer 15

Starts forwarding a frame as soon as its destination MAC is determined.

Question 16

Two Methods Used in Cut-Throw Switching

Answer 16

1. Rapid Frame Forwarding - will forward error frames to other network segments.
2. Fragment Free - waits for collision window (64 bytes) to pass before forwarding frame; provides more error checking than standard cut-through

Question 17

collision domains

Answer 17

Network segments that share the same bandwidth between devices.

Question 18

Broadcast Domain

Answer 18

Collection of interconnected switches.