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Bridge
Network segements that typically use the same communication potocol use bridges to pass info from 1 network segment to the other.
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Gateway
When diff communications protocols are by networks, gateways are used to convert the data from the sender's
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Hub
AKA concentrator. Hubs reside in the core of the LAN cabling system. The hub connects workstations & send every transmission to all the connected workstations.
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MDA ~
Media Dependant Adapter
Is a plug- in module allowing selection amoung fiber-optic, tp, & coaxial cable.
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Media filter
When the electrical characteristic various networks are different, media filter adapter connectors make thenconnection
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attenuation is
The weaking of the signal
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MAUs (Mutltstation Access Unit)
R special concentrators or hubs fornToken Ring networks instead of Ethernet networks
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NICs (Network Interface Cards)
R printed circuirt boards that r installed in pc workstations. They privide the physical connection & circuitry required to access the network
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Repeaters
Connectivity devices used to regenerate & amplify weak signals, thus extending the lenght of the network. Repeaters preform no other action on the data
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Routers
- Link 2 od more networks together, i. E IP network. A router recieves packets & selects the optimum path to forward the packet to other networks.
- WAN, Internetwork
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Switch
A connection device in a network that functions much like a bridge, but directs transmissions to a specific workstation rather than forwarding to all workstations on the network
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Transceiver
Is a combo of the words transmitter & receiver. It is a device that both transmits & recieves signals & connects a pc to the network. A transceiver may be external or located internally on the NIC.
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Connectivity devices work on layer of the OSI model
Physical
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NICs work on layer of the OSI model
Physical
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Transceivers work on layer of the OSI model
Physical
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Repeaters work on layer of the OSI model
Physical
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Hubs work on layer of the OSI model
Physical
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MDA (Media Dependent Adapter) work on layer of the OSI model
Physical
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Media Filters work on layer of the OSI model
Physical
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Bridges work on layer of the OSI model
Data Link
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Switches work on layer of the OSI model
Data Link
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Layer 3 switch work on layer of the OSI model
Network
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Layer 2 switch work on layer of the OSI model
Data Link
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Routers work on layer of the OSI model
Network
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Connectivity devices r those devices used to make _________ _________ connections.
Physical network
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Connectivity devices work on layer of the OSI model
Physical
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The lower 3 layers deal mostly w/ _______-_______ functions
Network-dependant (hardware) functions
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The lower layers of the OSI model r?
- 1. Physical
- 2. Data Link
- 3. Network
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The 4 upper layers deal w/ _________-_______ functions.
Application-oriented (user or software) functions.
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The upper layers ofnthe OSI model r?
- 7. Application
- 6. Presentation
- 5. Session
- 4. Transport
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Transceivers are now
Built into the NICs
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Repeaters just what?
Repeat the signal
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The receptacles on the front of the hub are called?
Ports 4 - 32 ports
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Some hubs have an additional ____ port that connects to another hub, thus increasing the size of the network.
Interface ~ uplink port
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If no uplink port use a what?
Crossover cable
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Bridges look at the what?
MAC address
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Routers build a table of all the device addresses (____ _____) across the network
Routing table
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Router uses the table to ____ a transmission from sending station to the receiving station across the best _____.
Forward ; path
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Logical addresses
IP address
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