Lesson 5: Interconnecting the LANs

Question 1

Aging Time

Answer 1

The length of time a MAC address remains assigned to a port

Question 2

ARP

Answer 2

Address Resolution Protocol, used to map an IP address to its MAC address

Question 3

ARP Cache

Answer 3

Temporary storage of MAC addresses recently contacted

Question 4

ARP Table

Answer 4

Another name for the ARP cache

Question 5

Association

Answer 5

Indicates that the destination address is for a networking device connected to one of the ports on the bridge

Question 6

Auto-negotiation

Answer 6

Protocol used by interconnected electronic devices to negotiate a link speed

Question 7

Bridge

Answer 7

A networking device that uses the MAC address to forward data and interconnect two LANs

Question 8

Bridging Table

Answer 8

List of MAC addresses and port locations for hosts connected to the bridge ports

Question 9

Broadcast

Answer 9

Transmission of the data to all connected devices

Question 10

Broadcast Domain

Answer 10

Any network broadcast sent over the network will be seen by all networking devices in this domain

Question 11

Broadcast Storm

Answer 11

Excessive amounts of broadcasts

Question 12

Cisco Network Assistant (CNA)

Answer 12

A management software tool from Cisco that simplifies switch configuration and troubleshooting

Question 13

Content Addressable Memory (CAM)

Answer 13

A table of MAC addresses and port mapping used by the switch to identify connected networking devices

Question 14

Cut-Through

Answer 14

The data packet is forwarded to the destination as soon as the destination MAC address has been read

Question 15

Dynamic Assignment

Answer 15

MAC addresses are assigned to a port when a host is connected

Question 16

Enterprise Network

Answer 16

Term used to describe the network used by a large company

Question 17

Error Threshold

Answer 17

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

Question 18

FastEthernet Port (FA0/0, FA0/1, FA0/2, . . . )

Answer 18

Naming of the FastEthernet ports on the router

Question 19

Flooding

Answer 19

The term used to describe what happens when a switch doesn’t have the destination MAC address stored in CAM

Question 20

Half-Duplex

Answer 20

The communications device can transmit or receive but not at the same time

Question 21

Isolating the Collision Domains

Answer 21

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

Question 22

Layer 2 Switch

Answer 22

An improved network technology that provides a direct data connection for network devices in a LAN

Question 23

Logical Address

Answer 23

Describes the IP address location of the network and the address location of the host in the network

Question 24

Managed Switch

Answer 24

Allows the network administrator to monitor, configure, and manage selected network features

Question 25

Media Converter

Answer 25

Used to adapt a layer 1 (physical layer) technology to another layer 1 technology

Question 26

Multicast

Answer 26

Messages are sent to a specific group of hosts on the network

Question 27

Multilayer Switch (MLS)

Answer 27

Operates at layer 2 but functions at the higher layers

Question 28

Multiport Bridge

Answer 28

Another name for a layer 2 switch

Question 29

Network Address

Answer 29

Another name for the layer 3 address

Question 30

Network Slowdown

Answer 30

Degraded network performance

Question 31

Router Interface

Answer 31

The physical connection where the router connects to the network

Question 32

Routing Table

Answer 32

Keeps track of the routes to use for forwarding data to its destination

Question 33

Secure Address

Answer 33

The switch port will automatically disable itself if a device with a different MAC address connects to the port

Question 34

Serial Port (S0/0, S0/1, S0/2, . . . )

Answer 34

Naming of the serial ports on the router

Question 35

Static Addressing

Answer 35

The MAC address has been manually assigned to a switch port

Question 36

Store-and-Forward

Answer 36

The entire frame of data is received before any decision is made regarding forwarding the data packet to its destination

Question 37

Switch Latency

Answer 37

The length of time a data packet takes from the time it enters a switch until it exits

Question 38

Translation Bridge

Answer 38

Used to interconnect two LANs that are operating two different networking protocols

Question 39

Transparent Bridge

Answer 39

Interconnects two LANs running the same type of protocol

Question 40

Wire Speed Routing

Answer 40

Data packets are processed as quickly as they arrive