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ccna 640-801 Layer2 switching tech
ccna 640-801 Layer2 switching tech
20
Computer Science
Professional
05/07/2009

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Cards

Term
what are the 3 basic operations of a switch
Definition
Discovering MAC addresses
filtering or forward
Preventing loops
Term
what layer do Switches opeate at in the osi model?
Definition
Layer 2
Term
What is the name of the database a Switch builds?
Definition
Filter Table - maps MAC adddresses to Ports
Term
Sends incoming frames to one port only, what is that called?
Definition
Frame Filtering
Term
Sends incoming frames to all ports in a switch, what is it called?
Definition
Flooding the frame
Term
What is the name of the bridge with the lowest aggregate root path cost?
Definition
Designated bridge
Term
What does a Designated Bridge do?
Definition
It is he only bridge on a LAN allowed to forward frames.
Term
What are the 3 switching methods used by Cisco?
Definition
Store and Forward, Cut through, Fragment Free
Term
What technology allows a single Ethernet interface to handle multiple VlAN's?
Definition
ISL = interswitch link
Term
what is VTP
Definition
VALN Trunking Protocol
Term
What does VTP do?
Definition
It is a protocol used between switches to simplify the management of VLANS's
Term
What arethe 3 VTP modes?
Definition
Server, client, transparent
Term
What can a switch do in VTP server mode?
Definition
Create, modify or delete VLAN configuration parameters for the whole domain
Term
What can a switch do in VTP client mode?
Definition
Receive VTP msgs, apply configuration changes
Term
What does a switch do in VTP transparent mode?
Definition
Forwards VTP msgs. Can create, modify or delete VLAN's but the changes are local only.
Term
What is VTP pruning?
Definition
VLAN traffic that does not route through a switch is stopped.
Term
What are the 3 methods for assigning a switch port to a VLAN?
Definition
Port-centic, static, dynamic
Term
describe Port-centric assignment?
Definition
all nodes that are connected to ports within the same VLAN are given the VLAN ID
Term
Describe static VLAN configuration
Definition
The ports on the switch are hard coded and remain in effect until the admin changes them.
Term
Describe dynamic VLAN configuration
Definition
Ports are automatically determine assigned VLAN. Determined by the type of protocol, within a frame, MAC address and logical addressing
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