Lesson 5: Interconnecting the LANs Flashcards
Aging Time
The length of time a MAC address remains assigned to a port
ARP
Address Resolution Protocol, used to map an IP address to its MAC address
ARP Cache
Temporary storage of MAC addresses recently contacted
ARP Table
Another name for the ARP cache
Association
Indicates that the destination address is for a networking device connected to one of the ports on the bridge
Auto-negotiation
Protocol used by interconnected electronic devices to negotiate a link speed
Bridge
A networking device that uses the MAC address to forward data and interconnect two LANs
Bridging Table
List of MAC addresses and port locations for hosts connected to the bridge ports
Broadcast
Transmission of the data to all connected devices
Broadcast Domain
Any network broadcast sent over the network will be seen by all networking devices in this domain
Broadcast Storm
Excessive amounts of broadcasts
Cisco Network Assistant (CNA)
A management software tool from Cisco that simplifies switch configuration and troubleshooting
Content Addressable Memory (CAM)
A table of MAC addresses and port mapping used by the switch to identify connected networking devices
Cut-Through
The data packet is forwarded to the destination as soon as the destination MAC address has been read
Dynamic Assignment
MAC addresses are assigned to a port when a host is connected
Enterprise Network
Term used to describe the network used by a large company
Error Threshold
The point where the number of errors in the data packets has reached a threshold and the switch changes from the cut-through to the store-and-forward mode
FastEthernet Port (FA0/0, FA0/1, FA0/2, . . . )
Naming of the FastEthernet ports on the router
Flooding
The term used to describe what happens when a switch doesn’t have the destination MAC address stored in CAM
Half-Duplex
The communications device can transmit or receive but not at the same time
Isolating the Collision Domains
Breaking the network into segments where a segment is a portion of the network where the data traffic from one part of the network is isolated from the other networking devices
Layer 2 Switch
An improved network technology that provides a direct data connection for network devices in a LAN
Logical Address
Describes the IP address location of the network and the address location of the host in the network
Managed Switch
Allows the network administrator to monitor, configure, and manage selected network features
Media Converter
Used to adapt a layer 1 (physical layer) technology to another layer 1 technology
Multicast
Messages are sent to a specific group of hosts on the network
Multilayer Switch (MLS)
Operates at layer 2 but functions at the higher layers
Multiport Bridge
Another name for a layer 2 switch
Network Address
Another name for the layer 3 address
Network Slowdown
Degraded network performance
Router Interface
The physical connection where the router connects to the network
Routing Table
Keeps track of the routes to use for forwarding data to its destination
Secure Address
The switch port will automatically disable itself if a device with a different MAC address connects to the port
Serial Port (S0/0, S0/1, S0/2, . . . )
Naming of the serial ports on the router
Static Addressing
The MAC address has been manually assigned to a switch port
Store-and-Forward
The entire frame of data is received before any decision is made regarding forwarding the data packet to its destination
Switch Latency
The length of time a data packet takes from the time it enters a switch until it exits
Translation Bridge
Used to interconnect two LANs that are operating two different networking protocols
Transparent Bridge
Interconnects two LANs running the same type of protocol
Wire Speed Routing
Data packets are processed as quickly as they arrive
