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networking G
Chapters 5 & 6
| Question | Answer |
|---|---|
| operate in the physical layer | repeater |
| cant interpret the data they retransmit | repeater |
| cant direct data to their destination | repeater |
| only one input and output port | repeater |
| allows you to extend a network cheaply | repeater |
| repeater with more then one outpout port | hub |
| operate at the physical layer | hub |
| accepts signals from a transmitting node and sends them out to all connected nodes in a broadcast manner | hub |
| allows the hub to connect to another hub | uplink port |
| all devices connected share the same amount of bandwith and collision domain | hub |
| do nothing but repeat signals | passive hubs |
| have many functions and can be managed anywhere on the network | intelligent or managed hubs |
| regenerate a signal over an entire network | repeaters |
| devices that connect two networks | bridges |
| analyze incoming frames and make decisions about where to send them based on the frames MAC address | bridges |
| operate at the data link layer | bridge |
| move data more rapidly than traditional routers because they are protocol independent | bridge |
| to translate between two segments it reads the frames destination MAC address and decides to filter it or send it forward | bridge |
| it reads the MAC address and searches its database and decides if the address is is on its segement or a different segment | bridge |
| connectivity devices that subdivides a network into smaller logical pieces or segments | switches |
| interpret MAC address information | switches |
| can turn a shared channel into several channels | switch |
| each on the switch acts like a bridge | port |
| each device connected to a can turn a shared channel into sevreal channels | switch |
| reads a frames header/MAC address and decides where to forward the data before it receives the entire packet | cut thru mode |
| best suited to small workgroupd where speed is important | cut thru mode |
| reads the entire data frame into memory and checks it for accuracy before sending the data | store and forward mode |
| bettter suited for larger LAN environments because there are less data errors | store and forward mode |
| logical seperate networks within networks by grouping a number of ports into a broadcast domain | VLAN |
| combination of ports that make up a Layer 2 segment | broadcast domain or subnet |
| seperating groups of users who need special security or network functions | reason for using a VLAN |
| isolating connections with heay or unpredictable traffic patterns | reason for using a VLAN |
| identifying groups of devices whose data should be given priority handling | reason for using a VLAN |
| functions in the data link layer | spanning tree protocol |
| calculates paths to avoid traffic loops and blocks links that would create loops | stp |
| a glorified bridge | switch |
| only one port and one bridge can can forward frames from the root bridge to the destination bridge | stp |
| provides the basis for all subsequent calculations | root bridge |
| switches operate in Layer of the OSI model | 2 |
| routers operate in Layer | 3 |
| hubs operate in Layer | 1 |
| a switch capable of interpreting layer 3 data | layer 3 or routing switch |
| switches that operate anywhere between layers 4 and layer 7 | content or application switches |
| multiport connectivity device that directs data between nodes on a network | router |
| receives an incoming packet ,reads the logical addresing information and determines which network to deliver it to | routers |
| operates at the network layer | router |
| must be configured to recognize a certain network layer protocol before they can transmit data using that protocol | router |
| can determine the shortest fastest path between two nodes | router |
| connect dissimiliar networks determine the best path for data from point A to B | router |
| reroute traffic if one path is not working provide high network fault tolerance | router |
| directs data between nodes on a Lan that is operated by a single organization | interior router |
| direct data between an employees workstation and his supervisors workstation down the hall | exterior router |
| connect a business using a LAN operated by a single organization to a WAN | border or gateway router |
| automatically calcualtes the best path between two nodes and stores the info in a table | dynamic routing |
| programmed to use specific paths between two nodes | static routing |
| used only to connect data about current network status and help decide the best path | routing protocols |
| time it takes for a router to recognize the best path in the event of a change | convergence time |
| distaance vector link state hybrid of the two | three types of routing protocols |
Created by:
cgeaski
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